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Removal of intracanal smear layer by doxycycline: SEM analysisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to verify the efficacy of doxycycline used alone or in association with sodium hypochlorite on smear layer removal. The canals of extracted human teeth were instrumented using a stepback technique. At the end of preparation, they were irrigated with doxycycline (Group 1), ethylenediaminetetraacetic acid + sodium hypochlorite (Group 2), doxycycline + sodium hypochlorite (Group 3) and water (Group 4). The dentinal wall of the cervical, middle and apical thirds was graded according to the amount of remaining debris and smear layer. The results were analysed using the Kruskal[ndash]Wallis test (P < 0....
Source: Australian Endodontic Journal - November 17, 2009 Category: Dentistry Authors: Mara Cristina Santos, Camila Vitor, Sheila Cristina, Wilson Tadeu Source Type: journals

Dentin strain induced by laser irradiationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of this study was to investigate the strain and temperature change in dentin induced by laser irradiation of human root canals with or without water cooling. Twenty-eight palatal roots of extracted human maxillary first molars were used. The strain in dentin was measured using strain gauges fixed on the apical third of the buccal root surface. The temperature change of the root dentin was monitored using thermocouples embedded into dentin near the apex. The root canal was irradiated with Er:YAG or Nd:YAG laser at an output of 1 W (100 mJ, 10 pps) for 5 s. The tip of the irradiation fibre was located 2.0 mm from...
Source: Australian Endodontic Journal - November 5, 2009 Category: Dentistry Authors: Satoshi Watanabe, Hidetoshi Saegusa, Tomoo Anjo, Arata Ebihara, Chihiro Kobayashi, Hideaki Suda Source Type: journals

Substance P and CGRP expression in dental pulps with irreversible pulpitisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study demonstrated that the expression of CGRP and SP is significantly higher in pulps with irreversible pulpitis compared with healthy pulps. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - November 4, 2009 Category: Dentistry Authors: Mandana Sattari, Mohammad Ali Mozayeni, Arash Matloob, Maryam Mozayeni, Homan H. Javaheri Source Type: journals

Bacterial colonisation of root canal dentine previously treated with endodontic irrigantsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study assessed if residues from MTAD, Endo-CHX, Peridex Oral Rinse or 6% NaOCl were inactivated by exposure to simulated leakage. Extracted teeth (15/group) were cut and drilled to produce a cylindrical canal space. They were irrigated, dried with paper points and transferred into 1 mL of simulated leakage (Enterococcus faecalis in tryptic soy broth) every 24 h. After one, two or three transfers, the number of colony forming units was measured by drilling the canal space and recovering the dentine shavings in antimicrobial-inactivating broth. Two-way anova of the log-transformed data showed irrigation method, leakage ...
Source: Australian Endodontic Journal - November 4, 2009 Category: Dentistry Authors: Brian J. Rasimick, Rinal P. Shah, Barry L. Musikant, Allan S. Deutsch Source Type: journals

Comparison of the canal centring ability of K3, Liberator and EZ Fill Safesiders by using spiral computed tomographyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of the study was to compare the canal centring ability of K3, Liberator and EZ Fill Safesiders by using spiral computed tomography (SCT). Forty curved mandibular premolars were selected. Before and after instrumentation teeth were scanned by spiral computed tomography and nine cross-sectional views of each tooth were obtained at 1.5 mm intervals from the apex. Canal centring ratio was calculated. Mean values were compared between different study groups by using one-way anova followed by Tukey [ndash] HSD procedure. At 1st, 2nd and 3rd levels, there was no statistical difference between groups. From 4th to 9th l...
Source: Australian Endodontic Journal - October 22, 2009 Category: Dentistry Authors: Nagendrababu Venkateshbabu, Satish Emmanuel, Goud K. Santosh, Deivanayagam Kandaswamy Source Type: journals

In vitro evaluation of effect of various endodontic solutions on selected physical properties of white mineral trioxide aggregateEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
During endodontic therapy various irrigating solutions at different concentrations and duration are used. These chemical solutions may affect the setting reaction of mineral trioxide aggregate (MTA). The aim of this study was to evaluate the effect of sodium hypochlorite (NaOCl) (5.25%), chlorhexidine gluconate (CHX) (2%), ethylenediaminetetraacetic acid (EDTA) solution (17%) and BioPure MTAD on surface micro-hardness and flexural strength of white MTA. Twenty-five disk-shaped and 25 bar-shaped specimens were divided into five groups and were stored under distilled water, NaOCl (5.25%), chlorhexidine CHX (2%), EDTA solutio...
Source: Australian Endodontic Journal - October 22, 2009 Category: Dentistry Authors: Vivek Aggarwal, Anurag Jain, Debipada Kabi Source Type: journals

Apical resorption in teeth with periapical lesions: Correlation between radiographic diagnosis and SEM examinationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study correlated the radiographic findings and scanning electron microscopy (SEM) images of external apical resorption (EAR) in teeth with periapical lesions. Standard radiographs were taken from 45 teeth with periapical lesions before their extraction. Using a radiographic examination, the root apex of each tooth was classified according to the EAR into the following categories: radiographic external apical resorption (REAR) absent, superficial and deep. The apical root surface was also examined with SEM. Photomicrographs of EARs were classified as periforaminal (PEAR) and foraminal (FEAR) in three degrees: 0, 1 and ...
Source: Australian Endodontic Journal - October 6, 2009 Category: Dentistry Authors: Fabiana Vieira Vier-Pelisser, José Antonio Poli de Figueiredo, Marcus Vinícius Reis Só, Lisiane Estivallet, Sílvia Juliana Eickhoff Source Type: journals

Endodontic management of a fused mandibular third molar and distomolar: A case reportEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Careful management of fused teeth is essential as abnormal morphology can predispose a tooth to caries and periodontal disease. In this paper, a rare case of successful endodontic management of unilateral mandibular third molar fused to a distomolar is reported. Caries was removed from the tooth complex under local anaesthesia. The pulp chambers of the third molar and supernumerary tooth were accessed and the root canals were prepared using rotary instrumentation and copious irrigation with 2.5% sodium hypochlorite. Obturation using the lateral condensation technique with gutta-percha and AH26 sealer was subsequently perfo...
Source: Australian Endodontic Journal - October 5, 2009 Category: Dentistry Authors: Ali Zeylabi, Farzaneh Shirani, Fatemeh Heidari, Ali Reza Farhad Source Type: journals

Histological evaluation of rat tissue response to GMTA, Retroplast, and Geristore retrograde filling materialsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of the study was to compare the short-term biocompatibility of grey mineral trioxide aggregate (GMTA), Retroplast and Geristore. Silicon tubes filled with the materials and empty control tubes were implanted in the dorsal connective tissue of 30 Wistar albino rats. The tubes and surrounding tissues were excised and prepared for histological examination at 1 week, 1 month and 2 months after implantation. Inflammatory cell counts and the presence or absence of necrosis adjacent to the materials and control tubes were recorded. Data were statistically analysed using one-way anova and Tukey's multiple comparisons tests...
Source: Australian Endodontic Journal - October 5, 2009 Category: Dentistry Authors: Huda M. Hammad, Mohammed A. Hamadah, Wael M. Al-Omari Source Type: journals

Teeth with double internal inflammatory resorption: Report of two casesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Internal inflammatory resorption is an uncommon condition, which requires the presence of necrotic and infected pulp tissue within the coronal portion of the root canal system as well as inflamed pulp tissue apical to the resorptive defect. The defect usually appears as a bowl-shaped radiolucency within the tooth root. Most cases are asymptomatic and many cases are only seen once the entire pulp has necrosed and all of the root canal system is infected resulting in apical periodontitis. The two cases presented are unusual in that they both had two distinct areas of internal inflammatory resorption. It is hypothesised that ...
Source: Australian Endodontic Journal - September 29, 2009 Category: Dentistry Authors: Giampiero Rossi-Fedele, Jose A.P. Figueiredo, Paul V. Abbott Source Type: journals

Apical microleakage evaluation of system B compared with cold lateral technique: In vitro studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to evaluate in vitro the apical sealing ability of cold lateral and system B root filling techniques using dye penetration. Eighty-six extracted single-rooted human teeth were prepared and randomly divided into two experimental groups to be obturated by cold lateral condensation (n = 33) and system B (n = 33). The remaining 20 teeth served as positive and negative controls. The roots were embedded for 72 h in methylene blue dye solution and sectioned transversely for dye penetration evaluation using stereomicroscope. The results of this study showed that cold lateral condensation leaked significan...
Source: Australian Endodontic Journal - September 28, 2009 Category: Dentistry Authors: Manal Farea, Sam'an Masudi, Wan Zaripah Wan Bakar Source Type: journals

Effects of new adhesive resin root canal filling materials on vertical root fracturesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to compare the fracture resistance of roots following root canal therapy using the RC Sealer system, the Epiphany system and the conventional system of gutta-percha and Sealapex. Fifty-six maxillary central incisors were divided into eight groups of seven teeth each, according to master apical file size and obturation systems. Obturation materials in the root canal were vertically loaded using a universal testing machine. Fracture loads were analysed by anova and Tukey comparison, and fracture patterns were analysed with ordinal logistic regression. Master apical file size 80 had a significantly l...
Source: Australian Endodontic Journal - September 28, 2009 Category: Dentistry Authors: Takahiro Hanada, Carlos Gabriel Adorno Quevedo, Motoko Okitsu, Takatomo Yoshioka, Naohiko Iwasaki, Hidekazu Takahashi, Hideaki Suda Source Type: journals

SEM evaluation of the apical external root surface of teeth with chronic periapical lesionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim is to verify, under scanning electron microscopy, the occurrence of apical root resorption in anterior and posterior teeth with chronic and radiographically visible periapical lesions. Thirty-two teeth were extracted, the apical thirds (n = 39) were removed, and prepared to analyse the external apical root surface. All specimens presented irregular areas of root resorption with different depths, located mainly around the apical foramen. Teeth with chronic periapical lesions present areas of external apical root resorption with irregular surface and different depths located mainly around the apical foramen. Root res...
Source: Australian Endodontic Journal - May 30, 2009 Category: Dentistry Authors: Wilson Tadeu Felippe, Maica Fritzen Ruschel, Gabriela Santos Felippe, Maria Helena Pozzobon, Mara Cristina Santos Felippe Source Type: journals

Fluid-transport evaluation of lateral condensation, ProTaper gutta-percha and warm vertical condensation obturation techniquesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of this study was to compare the microleakage of four obturation techniques (lateral condensation, lateral condensation of ProTaper Gutta-percha, single ProTaper Gutta-percha and warm vertical condensation) over a 3-month period. A fluid-transport model was used to measure microleakage. Sixty human-extracted teeth, divided into four groups, were prepared with ProTaper rotary instruments before the root canals were filled by one of the four examined techniques. All groups were obturated using Sultan as a root canal sealer. Microleakage was measured 7 days, 1 month and 3 months after the procedures. There were no...
Source: Australian Endodontic Journal - May 28, 2009 Category: Dentistry Authors: Fani Mahera, Nikolaos Economides, Christos Gogos, Panagiotis Beltes Source Type: journals

The relationship of pulp polyp with the presence and concentration of immunoglobulin E, histamine, interleukin-4 and interleukin-12Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to evaluate the relationship between pulp polyp formation and immunoglobulin E (IgE), histamine and interleukin-4 (IL-4) as the most important mediators which are involved in allergy. Thirty-two samples including 16 pulp polyps and 16 normal pulps were gathered. After homogenising the pulpal tissue samples, enzyme-linked immunosorbent assay (ELISA) techniques were used to assess the concentration of IgE, histamine, IL-4 and IL-12. The two groups showed statistically significant differences in terms of both the concentration and presence of IgE, histamine and IL-4 (P < 0.001); both presence and con...
Source: Australian Endodontic Journal - May 28, 2009 Category: Dentistry Authors: Mandana Sattari, Ali K. Haghighi, Hasan D. Tamijani Source Type: journals

Reliability of assessing dye penetration along root canal fillings using methylene blueEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study checked whether dye penetration displayed by MB is comparable to Rhodamine B (RB). One hundred and seventy-two root canals were filled with gutta-percha and six sealers. Samples were covered with nail varnish except for the apical area, and immersed in MB or RB solutions under negative pressure. After 24 h, roots were bisected, photographed and the maximal dye penetration recorded. Dye penetrations displayed by MB and RB were compared (Newman[ndash]Keuls test). MB and RB displayed comparable results for groups filled with AH Plus, EndoREZ and Polifil (P > 0.05). For Endofill, Sealer 26 and Sealapex, a significan...
Source: Australian Endodontic Journal - May 28, 2009 Category: Dentistry Authors: Erick Miranda Souza, Fernanda Geraldes Pappen, Hagay Shemesh, Cristiane Bonanato-Estrela, Idomeo Bonetti-Filho Source Type: journals

Endodontic treatment of a mandibular first molar with three mesial canals and broken instrument removalEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
To succeed in any dental procedure, the clinician's awareness of the patient's dental anatomy and its variations is crucial. In endodontic therapy, obtaining full information about the root canals' variations can affect the outcome substantially. This case report presents the endodontic treatment of a mandibular first molar exhibiting three mesial root canals with 4 mm of a separated K-file in the coronal third of the mesiolingual canal on an 18-year-old female patient. This case demonstrates the importance of locating additional canals in any roots undergoing endodontic treatment and how the clinician's awareness of aberr...
Source: Australian Endodontic Journal - May 28, 2009 Category: Dentistry Authors: Farhad Faramarzi, Hamidreza Fakri, Homan H Javaheri Source Type: journals

Non-surgical management of paraesthesia and pain associated with endodontic sealer extrusion into the mandibular canalEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, iatrogenic extrusion of endodontic materials should be included in differential diagnosis of endodontic pain and can sometimes be managed through non-surgical interventions in some cases. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 28, 2009 Category: Dentistry Authors: Fabiana Gama Benevides Froes, Águida Maria Menezes Aguiar Miranda, Ernani da Costa Abad, Fernanda Nehme Riche, Fábio Ramôa Pires Source Type: journals

Antimicrobial substantivity of root canal irrigants and medicaments: A reviewEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Disinfection of the root canal system is one of the primary aims of root canal treatment. This can be achieved through the use of various antimicrobial agents in the form of irrigants and medicaments. These agents are only used for relatively short periods of time ranging from minutes (for irrigants) up to days or several weeks (for medicaments) and therefore their long-term antimicrobial effects rely on whether or not the particular agent has any properties of substantivity. If irrigants and medicaments had effective long-term residual antimicrobial activity that could prevent re-infection of the root canal system, then t...
Source: Australian Endodontic Journal - May 28, 2009 Category: Dentistry Authors: Zahed Mohammadi, Paul V. Abbott Source Type: journals

Effect of sodium ascorbate on bond strength of different adhesive systems to NaOCl-treated dentinEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to evaluate the effects of sodium ascorbate on bond strength of different adhesive systems to NaOCl-treated dentin. Eighty extracted molar teeth were used in the study. The buccal enamel surfaces were removed to obtain a flat dentin surface. The teeth were mounted in self-curing resin and dentin surfaces were irrigated with NaOCl for 10 min. Half of the specimens were treated with sodium ascorbate for 10 min. The teeth were randomly assigned to four subgroups according to the adhesive systems used (Clearfil SE Bond, Clearfil Tri-S Bond, Adper Prompt-L-Pop, Adper Single Bond 2). Bond strengths were...
Source: Australian Endodontic Journal - May 22, 2009 Category: Dentistry Authors: Cigdem Celik, Selim Erkut, Kamran Gulsahi, Kivanc Yamanel, Cigdem Kucukesmen Source Type: journals

Evaluation of the centreing ability of the ProTaper Universal™ rotary system in curved roots in comparison to Nitiflex™ filesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of the present study was to assess the centreing ability of the ProTaper Universal[trade] rotary system in curved roots in comparison to Nitiflex[trade] files, by means of preoperative and postoperative imaging of a cross-section of the apical third. Twenty mesiobuccal canals of human first mandibular molars with a degree of curvature ranging from 35° to 60° were divided into two groups of 10 specimens each: group 1, ProTaper Universal[trade] rotary system; group 2 (control), Nitiflex[trade] files. All instruments produced morphological alterations. The Student's t-test and Kruskal[ndash]Wallis test showed that t...
Source: Australian Endodontic Journal - May 21, 2009 Category: Dentistry Authors: Carlos Menezes Aguiar, Daniela de Andrade Mendes, Andréa Cruz Câmara, Jose Antonio Poli de Figueiredo Source Type: journals

Mandibular first premolar with two roots and three canalsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This case report presents a relatively uncommon clinical case of a mandibular premolar with two roots and three canals. The possibility of additional root canals should be considered even in teeth with a low frequency of abnormal root canal anatomy. Sound knowledge of root canal anatomy, appropriate assessment of the pulp chamber floor, critical interpretation of radiographs and high-magnification examinations are highly desirable to achieve the best possible outcome in complicated root canal therapy. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 21, 2009 Category: Dentistry Authors: Saravanan Poorni, Chellasamy Savarimala Karumaran, Rajamani Indira Source Type: journals

Safety of laser use under the dental microscopeEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to investigate the safety of laser use under the dental microscope. Nd:YAG, Er:YAG and diode lasers were used. The end of the tips was positioned at a distance of 5 cm from the objective lens of a dental microscope. Each eye protector was made into a flat disc, which was fixed on the lens of the microscope. The filters were placed in front of the objective lens or behind the eye lens. Transmitted energy through the microscope with or without the filters was measured. No transmitted laser energy was detected when using matched eye protectors. Mismatched eye protectors were not effective for shuttin...
Source: Australian Endodontic Journal - May 21, 2009 Category: Dentistry Authors: Hidetoshi Saegusa, Satoshi Watanabe, Tomoo Anjo, Arata Ebihara, Hideaki Suda Source Type: journals

Root canal re-treatment of a mandibular second premolar with three root canals: a case reportEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Accurate diagnosis of root canal morphology and anatomy is essential for thorough shaping and cleaning of the entire root canal system and consequent successful root canal treatment. Mandibular premolars show a wide variety of root canal anatomy. This paper describes a case of mandibular second premolar with three root canals that has previously received an incomplete root canal treatment. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 21, 2009 Category: Dentistry Authors: Noushin Shokouhinejad Source Type: journals

Evaluation of cytotoxicity of two root canal filling materials by MTT assayEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this study there were four groups: GP and GF were considered as study groups and the other two were negative control groups. GP and GF were prepared according to manufacturer's instruction. L-929 fibroblast cells of mouse were passaged with trypsin (Merck, Germany) after elimination of freeze phase. Adequate trypsin was added to cells and they were prepared with 95% of cell vitality. After 24 h, 150 000 cells were put in each well. The cell and dimethyl methacrylate were used as negative and positive controls. Ten specimens from each group were brought into contact with the culture medium and were incubated under steril...
Source: Australian Endodontic Journal - May 21, 2009 Category: Dentistry Authors: Hengameh Ashraf, Ali Taherian, Alireza N. Kerdar Source Type: journals

Use of a natural tooth crown as a pontic following cervical root fracture: a case reportEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The loss of anterior teeth can be psychologically and socially damaging to the patient. Despite a wide range of treatment options available, traumatised teeth may be inevitably lost on certain occasions. This paper describes the immediate replacement of a right central incisor using a fibre-composite resin with the natural tooth crown as a pontic. The abutment teeth can be conserved with minimal or no preparation, thus keeping the technique reversible, and can be completed at chair side thereby avoiding laboratory costs. It can be used as an interim measure or a definitive prosthesis. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 21, 2009 Category: Dentistry Authors: Abhishek Parolia, Kundabala M. Shenoy, Manuel S. Thomas, Mandakini Mohan Source Type: journals

A comparative study of four rotary NiTi instruments in preserving canal curvature, preparation time and change of working lengthEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of this ex vivo study was to compare working time, working length changes and shaping effects using ProTaper, ProFile, FlexMaster and Mtwo rotary instruments. A total of 96 mesiobuccal roots of the first maxillary molars were prepared using these instruments. Using pre and post-radiographs, canal curvature and working length were measured. In addition, the time required for canal preparation was recorded. Data was statistically analysed using one-way anova and Duncan's post-hoc tests. ProTaper significantly lessened the canal curvature (P < 0.001), and Mtwo rotary instruments took significantly less instrumenta...
Source: Australian Endodontic Journal - April 7, 2009 Category: Dentistry Authors: Alavieh Vahid, Neda Roohi, Farid Zayeri Source Type: journals

Effect of two storage solutions on surface topography of two root-end fillingsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The effect of different storage solutions on surface topography of mineral trioxide aggregate (MTA) and new experimental cement (NEC) as root-end fillings was investigated. Twenty-four single-rooted teeth were cleaned, shaped and obturated in a same manner. After root-end resection, 3-mm deep root-end cavities were ultrasonically prepared. Samples were randomly divided into four test groups (A1-A2-B1-B2, n = 6). Root-end cavities in groups A and B were filled with MTA and NEC, respectively, and were then stored in 100% humidity for 24 h. The samples of groups 1 and 2 were, respectively, immersed in normal saline (NS) and p...
Source: Australian Endodontic Journal - November 26, 2008 Category: Dentistry Authors: Saeed Asgary, Mohammad Jafar Eghbal, Masoud Parirokh, Jamileh Ghoddusi Source Type: journals

Root canal treatment of three-rooted maxillary second premolars: Report of four casesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this report is to contribute to a better understanding of the radiographic, clinical and anatomic findings in maxillary second premolars. This paper reports the endodontic treatment of two cases of three-rooted three-canal maxillary second premolars in different patients, and two sound maxillary second premolars also with three canals and three independent roots in a sibling of one of the patients. Although the presence of maxillary second premolars with one or two canals and one root is much more common, other anatomic conditions can be found. A correct clinical and radiographic diagnosis based on knowledge of ...
Source: Australian Endodontic Journal - November 25, 2008 Category: Dentistry Authors: Danilo Barbosa Barros, Juliane Maria Guerreiro Tanomaru, Mário Tanomaru-Filho Source Type: journals

An initial investigation on torsional properties of nickel-titanium instruments produced with a new manufacturing methodEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A new manufacturing process involving twisting of a ground blank combined with heat treatment has been recently developed to produce nickel-titanium rotary files for root canal preparation. The aim of this study was to compare torsional resistance of prototype instruments produced using the new manufacturing method versus traditional nickel-titanium instruments produced by the customary grinding process. Twenty prototypes instruments of the same design and dimensions were divided in two groups of 10 each, according to the different manufacturing method. A file-testing apparatus specifically designed to perform torsional te...
Source: Australian Endodontic Journal - November 25, 2008 Category: Dentistry Authors: Gianluca Gambarini, Giorgio Pompa, Stefano Di Carlo, Massimo De Luca, Luca Testarelli Source Type: journals

Scanning electron microscopy evaluation of the hard tissue barrier after pulp capping with calcium hydroxide, mineral trioxide aggregate (MTA) or ProRoot MTAEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to investigate the morphology and localisation of calcium hydroxide- and mineral trioxide aggregate (MTA)-induced hard tissue barriers after pulpotomy in dogs' teeth. Pulpotomies were performed on maxillary and mandibular premolars of five dogs. The teeth were assigned into three groups according to the pulp-capping agent used. The pulpal wounds were capped with calcium hydroxide (Ca(OH)2[ndash] control), MTA or ProRoot MTA, and the cavities were restored with amalgam. After a 90-day follow-up period, the dogs were euthanised and the teeth were examined under scanning electron microscopy (SEM). An...
Source: Australian Endodontic Journal - November 25, 2008 Category: Dentistry Authors: Eduardo Galia Reston, Carlos Alberto de Souza Costa Source Type: journals

Apical transportation: Two assessment methodsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study compared two methods for apical transportation measurement: digitised images of longitudinal root sections and radiographs. Sixty upper molar mesiobuccal root canals prepared for endodontic treatment were assessed. The results did not demonstrate statistically significant differences between the two imaging methods used to evaluate root canal transportation. The two methods were proven to be equally reliable. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - November 25, 2008 Category: Dentistry Authors: Fernanda Ullmann López, Juliana Andréa Corrêa Travessas, Elaine Fachin, Vania Fontanella, Fabiana Grecca Source Type: journals

Postoperative pain and associated factors in adolescent patients undergoing two-visit root canal therapyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This prospective study investigated the frequency and intensity of postoperative pain and identified associated factors in adolescents undergoing two-visit root canal therapy. Sixty-four patients aged 11 to 18 years old presenting with molars with pulp necrosis were assigned consecutively to two visits (plus an interappointment dressing using calcium-hydroxide paste). Pain intensity was recorded on a visual analogue scale (VAS) of 0[ndash]5. Data were analysed using multivariate logistic regression. The frequency of postoperative pain was 32.8% (21/64), with intensities of VAS 1 and VAS 2 in 81%, VAS 3 in 14.3% and VAS 4 i...
Source: Australian Endodontic Journal - November 25, 2008 Category: Dentistry Authors: Patrícia de Andrade Risso, Antonio José Ledo Alves da Cunha, Marcos César Pimenta de Araujo, Ronir Raggio Luiz Source Type: journals

Effect of 17% EDTA and MTAD on intracanal smear layer removal: A scanning electron microscopic studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of this study was to determine the effectiveness of MTAD as the final irrigant to remove the smear layer, compared with that of 17% EDTA, both following root canal irrigation with 5.25% sodium hypochlorite (NaOCl). Fifty-five extracted maxillary and mandibular single-rooted human teeth were prepared by a crown-down technique using rotary 0.04 and 0.06 taper nickel-titanium files. 5.25% sodium hypochlorite was used as the intracanal irrigant. The canals were then treated with 5 mL of one of the following solutions as final rinse: 5.25% sodium hypochlorite, 17% EDTA or MTAD. The presence or absence of smear layer...
Source: Australian Endodontic Journal - November 20, 2008 Category: Dentistry Authors: Mohammad Ali Mozayeni, Ghasem Hossein Javaheri, Pardis Poorroosta, Mohammad Asna Ashari, Homan Hossein Javaheri Source Type: journals

Effectiveness of a 2% chlorhexidine solution mixed with calcium hydroxide against Candida albicansEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of this investigation was to examine the in vitro susceptibility of Candida albicans to a mixture of chlorhexidine and calcium hydroxide using a tube dilution test. A suspension containing C. albicans was exposed to 2% chlorhexidine solution, calcium hydroxide paste and 2% chlorhexidine mixed with calcium hydroxide in plastic tissue culture wells. The tested agents were incubated with C. albicans for 1, 24, or 72 h. All agents were effective anti-fungals at all experimental time periods tested, with the exception of exposure to calcium hydroxide for 1 h. A mixture of 2% chlorhexidine and calcium hydroxide there...
Source: Australian Endodontic Journal - July 13, 2008 Category: Dentistry Authors: Saad Al-Nazhan, Mohammed Al-Obaida Source Type: journals

Effect of 17% EDTA and MTAD on intracanal smear layer removal: A scanning electron microscopic studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The purpose of this study was to determine the effectiveness of MTAD as the final irrigant to remove the smear layer, compared with that of 17% EDTA, both following root canal irrigation with 5.25% sodium hypochlorite (NaOCl). Fifty-five ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Radiological evaluation of the morphological changes of root canals shaped with ProTaper™ for hand use and the ProTaper™ and RaCe™ rotary instrumentsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study evaluated, by means of the radiography examination, the occurrence of deviations in the apical third of root canals shaped with hand and rotary instruments. Sixty mandibular human molars were divided into three groups. The root canals ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Endodontic re-treatment associated with the elimination of amalgam root-end filling through sinus tracts: A report of two casesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract Two patients presented with complaints of recurrent drainage of purulent exudate from sinus tracts, inflammation and pain after endodontic re-treatment of the maxillary left (Case 1) and right (Case 2) lateral incisors. The periapical lesions ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Histological evaluation of the effect of three medicaments; trichloracetic acid, formocresol and mineral trioxide aggregate on pulpotomised teeth of dogsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The aim of this study was to use clinical, radiographic and histological examinations to compare the dental pulp response in 162 premolar roots of eight dogs when trichloracetic acid (TCA), formocresol, mineral trioxide aggregate (MTA) and zinc ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

In vitro analysis of the penetration of methylene blue dye in human radicular dentin using different methods of impregnationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The purpose of the present study was to verity whether different conditions of contact with a dye solution would result in different levels of the impregnation by the marker agent in human radicular dentin. The root canals of 60 upper human ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Extrusion of debris after use of rotary nickel-titanium files with different pitch: A pilot studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The aim of this investigation was to quantitatively compare the amount of debris extruded apically from curved canals when using rotary nickel-titanium files with different pitches and sequences of use under the same preparation technique. ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Detection of presence or absence of herpes simplex virus, Epstein Barr virus and human cytomegalovirus in infected pulp using a polymerase chain reactionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The development of methods to amplify nucleic acids has provided a way of identifying and quantifying infectious pathogens in infected pulp and periapical region. Recent studies have detected human herpes virus in periapical pathosis and ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Susceptibility of Candida albicans and Enterococcus faecalis to Chitosan, Chlorhexidine gluconate and their combination in vitroEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The aim of the present study was to analyse the sustain release of Chlorhexidine with Chitosan and to investigate the antimicrobial activity of 2% Chlorhexidine gel, 2% Chitosan gel and their combination against Candida albicans and Enterococcus ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Effectiveness of propolis and calcium hydroxide as a short-term intracanal medicament against Enterococcus faecalis: A laboratory studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 0, Issue 0, Page ???, OnlineEarly Articles. Abstract The aim of this study was to investigate the antimicrobial activity of propolis-based intracanal medicament against Enterococcus faecalis using infected dentine models, and to compare its antimicrobial efficacy with that of the non-setting ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 9, 2008 Category: Dentistry Tags: article Source Type: journals

Extrusion of debris after use of rotary nickel-titanium files with different pitch: A pilot studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, short pitch design resulted in significantly less amount of debris extrusion compared with the other pitch lengths. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - May 7, 2008 Category: Dentistry Authors: Elham A. Elmsallati, Reiko Wadachi, Hideaka Suda Source Type: journals

Endodontic re-treatment associated with the elimination of amalgam root-end filling through sinus tracts: A report of two casesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Two patients presented with complaints of recurrent drainage of purulent exudate from sinus tracts, inflammation and pain after endodontic re-treatment of the maxillary left (Case 1) and right (Case 2) lateral incisors. The periapical lesions persisted after apical curettage, apicectomy and root-end filling with silver amalgam. Radiographic examination exposed the poor quality of the endodontic treatments and the silver amalgam root-end fillings, which were associated with periapical radiolucent areas in both teeth. The sinus tract persisted after root canal cleaning and shaping, followed by a calcium hydroxide root canal ...
Source: Australian Endodontic Journal - May 7, 2008 Category: Dentistry Authors: Janir Alves Soares, Eduardo Nunes, Frank Ferreira Silveira, Suelleng Maria Cunha Santos, Maiolino Thomaz Fonseca Oliveira Source Type: journals

Effectiveness of propolis and calcium hydroxide as a short-term intracanal medicament against Enterococcus faecalis: A laboratory studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to investigate the antimicrobial activity of propolis-based intracanal medicament against Enterococcus faecalis using infected dentine models, and to compare its antimicrobial efficacy with that of the non-setting calcium hydroxide paste when used as a short-term medication for 1 and 2 days. A total of 50 dentine discs of 7-mm length was obtained from extracted human teeth. Five dentine discs were kept sterile to serve as a negative control. The remaining 45 were contaminated with E. faecalis and divided into two groups (n = 20) in addition to five discs that served as a positive control. The disc...
Source: Australian Endodontic Journal - May 7, 2008 Category: Dentistry Authors: Lama Awawdeh, Maha AL-Beitawi, Mohammad Hammad Source Type: journals

Use of a bottle warmer to increase 4% sodium hypochlorite tissue dissolution ability on bovine pulpEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 34, Issue 1, Page 39-42, April 2008. Abstract The aim of this study was to evaluate the tissue dissolution ability of 4% sodium hypochlorite at increasing temperatures with the use of a baby bottle warmer. Twenty pieces of bovine pulp tissue from freshly extracted incisors and canines were ... (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - March 19, 2008 Category: Dentistry Tags: article Source Type: journals

New South Wales ASE IncEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 34, Issue 1, Page 47-48, April 2008. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - March 19, 2008 Category: Dentistry Tags: article Source Type: journals

West AustraliaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Australian Endodontic Journal, Volume 34, Issue 1, Page 46-47, April 2008. (Source: Australian Endodontic Journal)
Source: Australian Endodontic Journal - March 19, 2008 Category: Dentistry Tags: article Source Type: journals