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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 19.

Threshold value for the perception of color changes of human gingiva.
Authors: Sailer I, Fehmer V, Ioannidis A, Hämmerle CH, Thoma DS Abstract The aim of this study was to assess the threshold value for the perception of color changes of human gingiva. Standardized presentations of five cases in the esthetic zone were made with the gingiva and teeth separated. The color parameters L, a, and b (CIELab) of the gingival layers were adjusted to induce darker and lighter colors. In the presentations, the right side (maxillary right anterior) was unchanged, while the left side (maxillary left anterior) of the pictures was modified. Ten dentists, 10 dental technicians, and 10 lay people ev...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Resorbable dome device and guided bone regeneration: an alternative bony defect treatment around implants. A case series.
Authors: Parma-Benfenati S, Roncati M, Galletti P, Tinti C Abstract This case series presents the use of a resorbable "dome device" made of a slow, long-lasting resorbable suturing material to support the barrier creating and maintaining a secluded space to promote bone regeneration. Acellular dermal matrix or cross-linked resorbable collagen membrane, as barriers, combined with mineralized freeze-dried bone allograft, with simultaneous implant placement, were utilized in reconstructing non-space-making defects. Eight implants in six healthy patients were treated with a combination of these resorbable regenerative ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Stress distribution in reduced periodontal supporting tissues surrounding splinted teeth.
Authors: Kurgan S, Terzioglu H, Yılmaz B Abstract The aim of this study was to analyze the distribution of occlusal stresses for splinted and nonsplinted mandibular anterior incisors and to compare different splinting materials. A mandibular model was generated from a patient's computed tomography scan using three-dimensional (3D) software. The mandibular model presented with four periodontally compromised incisors and two canines with optimal bone support (two-thirds crown-root ratio). Three different splint materials (composite resin, metal-reinforced, and fiber-reinforced) were selected. Vertical and transverse...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

A follow-up study of up to 5 years of metal-ceramic crowns in maxillary central incisors for different gingival biotypes.
The objective of this prospective clinical study was to evaluate the outcomes of metal-ceramic crown restorations in maxillary central incisors for different gingival biotypes in a Chinese population. One hundred single metal-ceramic crowns were fabricated for 100 patients (50 for thin gingival type and 50 for thick gingival type) from April 2007 to October 2007 and evaluated according to the World Dental Federation criteria at baseline and annually at all follow-up examinations for 5 years. Gingival recession was recorded at the same time, as well. The failure-free rate over the 5-year clinical trial for thin gingival typ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Rehabilitation of the atrophic posterior mandible with short (4-mm) implants: a case report.
Authors: Pistilli R, Barausse C, Checchi L, Felice P Abstract This case report describes a successful implant-prosthetic rehabilitation of an atrophic posterior mandible with 4-mm-long implants. The patient refused to undergo any reconstructive surgery, and because the available bone up to the inferior alveolar nerve was only 5 mm or less, the patient received four implants of 4-mm length. Four months after implant placement, a provisional prosthesis was put in place; after another 4 months, this was then in turn replaced with a definitive prosthesis. The use of such short implants allows a fixed prosthetic solutio...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Platelet-rich plasma combined with decalcified freeze-dried bone allograft for the treatment of noncontained human intrabony periodontal defects: a randomized controlled split-mouth study.
Authors: Agarwal A, Gupta ND Abstract The aim of the present randomized split-mouth clinical trial was to compare plateletrich plasma (PRP) combined with a demineralized freeze-dried bone allograft (DFDBA) to DFDBA with a saline solution in the treatment of noncontained human periodontal intrabony defects. Forty-eight noncontained interproximal intrabony defects in 24 healthy nonsmoking patients diagnosed with chronic periodontitis were randomly assigned to the test group (PRP/DFDBA) or the control group (DFDBA/saline). Clinical (probing pocket depth, clinical attachment level [CAL], and gingival recession [REC]) a...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Prospective observational study of the early loading of nanostructured calcium phosphate-coated tapered implants in the mandible and maxilla.
Authors: Kim YK, Yun PY, Kim SB, Ahn KJ, Lee HJ, Yi YJ, Kim SG Abstract The purpose of this study was to evaluate the prospective clinical results of early loading. Implants were inserted in 11 maxillae (group I, 23 implants) and 12 mandibles (group II, 19 implants). Six months after prosthetic loading, several factors were investigated. Significant differences between the primary and secondary stability were not observed in groups I and II. The primary stability in the mandible was 81.1 implant stability quotient (ISQ), which was significantly higher than the 73.3 ISQ value observed in the maxilla (P = .003). The ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Color stability of shade guides after autoclave sterilization.
This study evaluated the influence of 120 autoclave sterilization cycles on the color stability of two commercial shade guides (Vita Classical and Vita System 3D-Master). The specimens were evaluated by spectrophotometer before and after the sterilization cycles. The color was described using the three-dimensional CIELab system. The statistical analysis was performed in three chromaticity coordinates, before and after sterilization cycles, using the paired samples t test. All specimens became darker after autoclave sterilization cycles. However, specimens of Vita Classical became redder, while those of the Vita System 3D-M...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Impacted canine extraction by ridge expansion using air scaler surgical instruments: a case report.
Authors: Agabiti I, Bernardello F, Nevins M, Wang HL Abstract The presence of an impacted tooth interferes with ideal implant placement. In such cases, atraumatic extraction is recommended in order to avoid difficult and complex bone regeneration procedures. In the present case report, a novel surgical approach to extract a horizontally impacted canine using an edentulous ridge expansion (ERE) technique and air scaler surgical devices is described. A 74-year-old female patient had a maxillary left horizontally impacted canine. The tooth was extracted after elevating a partial-thickness flap and performing an ERE te...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Quantitative three-dimensional methodology to assess volumetric and profilometric outcome of subepithelial connective tissue grafting at pontic sites: a prospective pilot study.
Authors: González-Martín O, Veltri M, Moráguez O, Belser UC Abstract The aim of this study was to describe a technique for the assessment of soft tissue volumetric and profilometric changes. The technique has been applied at the alveolar contour of mild to moderate horizontal ridge defects after soft tissue augmentation at pontic sites. A quantitative three-dimensional (3D) analysis based on laser scanning was used for the measurement of volume gain and horizontal changes of alveolar profile 5 months after a subepithelial connective tissue graft using a pouch approach in five patients. All the surgical sites hea...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Vertical bone growth following autotransplantation of the developing maxillary third molar to replace a retained mandibular permanent molar: a case report.
Authors: Plakwicz P, Czochrowska EM, Milczarek A, Zadurska M Abstract A retained permanent mandibular first molar caused arrested development and a defect of the alveolar bone in a 16-year-old girl. Extraction of the ankylosed tooth was immediately followed by autotransplantation of the developing maxillary third molar. At the 3-year follow-up examination the interproximal bone level at the autotransplanted molar was equal to that of the neighboring teeth. Cone beam computed tomography showed bone at the labial aspect of the transplant. The eruption of the autotransplanted tooth stimulated vertical alveolar bone de...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Factors affecting the outcome in the immediate loading rehabilitation of the maxilla: a 6-year prospective study.
In this study, 164 implants were inserted in 37 patients and loaded within 24 to 36 hours. Four implants failed during the first 6 months. At the 6-year follow-up, a mean bone loss of 1.52 mm was found. Significantly (P < .0083) less bone loss was found next to tapered implants compared with cylindric implants and next to machined collar implants compared with full acid-etched implants (P < .0083). No significant differences in bone loss were found in tilted versus upright implants or in mesial versus distal implant sites. In addition, there were no significant differences relating to either the degree of abutment an...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Treatment of noncarious cervical lesions by a subepithelial connective tissue graft versus a composite resin restoration.
In conclusion, the CTG treatment is superior to the CRR treatment for NCCLs based on periodontal health parameters. From a patient point of view, the CTG is the more esthetic treatment. PMID: 25171035 [PubMed - in process] (Source: International Journal of Periodontics and Restorative Dentistry)
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Bone dimensions in the posterior mandible: a retrospective radiographic study using cone beam computed tomography. Part 2--analysis of edentulous sites.
Authors: Braut V, Bornstein MM, Kuchler U, Buser D Abstract A precise radiographic evaluation of the local bone dimensions and morphology is important for preoperative planning of implant placement. The purpose of this retrospective study was to analyze dimensions and morphology of edentulous sites in the posterior mandible using cone beam computed tomography (CBCT) images. This retrospective radiographic study measured the bone width (BW) of the mandible at three locations on CBCT scans for premolars (PM1, PM2) and molars (M1, M2): at 1 mm and 4 mm below the most cranial point of the alveolar crest (BW1, BW2) and ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Soft tissue contour changes at immediate implants: a randomized controlled clinical study.
Authors: Cardaropoli D, Gaveglio L, Gherlone E, Cardaropoli G Abstract In 52 patients, single anterior teeth were extracted and replaced by immediate implants. The peri-implant gap was left either untreated (control) or was grafted and covered with a membrane (test group). After 12 months the horizontal bone resorption was significantly lower in the test group (test sites: 0.69 ± 0.68 mm, 8.13%; control sites: 1.92 ± 1.02 mm, 21.62%; P = .001), and there was less reduction in ridge height (test sites: 0.58 ± 0.77 mm; control sites: 1.69 ± 1.74 mm;P = .004). Ridge preservation considerably limited the amount of ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Analysis of select facial and dental esthetic parameters.
Authors: Nold SL, Horvath SD, Stampf S, Blatz MB Abstract This clinical study examined objective smile parameters in the natural anterior dentition. Standardized intraoral and extraoral photographs were taken of 106 Caucasian adults (54 women, 52 men) with a healthy dentition. The following parameters were analyzed: correlation of dental and facial midline, upper lip position and curvature, relationship of the maxillary anterior incisal curve with lower lip, number of teeth displayed in a smile, distance between maxillary anterior teeth and lower lip, slope of tooth, and lip arc. The simple frequency distribution o...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Radiographic comparison of different concentrations of recombinant human bone morphogenetic protein with allogenic bone compared with the use of 100% mineralized cancellous bone allograft in maxillary sinus grafting.
Authors: Froum SJ, Wallace S, Cho SC, Khouly I, Rosenberg E, Corby P, Froum S, Mascarenhas P, Tarnow DP Abstract The purpose of this study was to radiographically evaluate, then analyze, bone height, volume, and density with reference to percentage of vital bone after maxillary sinuses were grafted using two different doses of recombinant human bone morphogenetic protein 2/acellular collagen sponge (rhBMP-2/ACS) combined with mineralized cancellous bone allograft (MCBA) and a control sinus grafted with MCBA only. A total of 18 patients (36 sinuses) were used for analysis of height and volume measurements, having tw...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

The connective tissue graft wall technique and enamel matrix derivative to improve root coverage and clinical attachment levels in Miller Class IV gingival recession.
This report encourages a novel application of CTG plus EMD to improve both root coverage and regenerative parameters in Miller Class IV gingival recessions. PMID: 25171030 [PubMed - in process] (Source: International Journal of Periodontics and Restorative Dentistry)
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Immunohistochemical expression of matrix metalloproteinase 13 in chronic periodontitis.
Authors: Nagasupriya A, Rao DB, Ravikanth M, Kumar NG, Ramachandran CR, Saraswathi TR Abstract The extracellular matrix is a complex integrated system responsible for the physiologic properties of connective tissue. Collagen is the major extracellular component that is altered in pathologic conditions, mainly periodontitis. The destruction involves proteolytic enzymes, primarily matrix metalloproteinases (MMPs), which play a key role in mediating and regulating the connective tissue destruction in periodontitis. The study group included 40 patients with clinically diagnosed chronic periodontitis. The control group ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

A comparison between the occlusal morphology of virtually reconstructed posterior crowns and natural molars.
This study was performed to evaluate the occlusal morphologic similarities between virtually reconstructed full crowns and original natural teeth. A total of 40 stone cast sets with untreated first molars (22 maxillary and 18 mandibular) were scanned and saved as three-dimensional virtual models. The 40 first molars on the stone casts were prepared for all-ceramic restorations, scanned again, and virtually restored with a full veneer crown using a biogeneric tooth algorithm. For comparison of original and virtually restored teeth, orthographic measurements were performed on the cusp tip configurations from the central pits...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Buccal plate regeneration with immediate postextraction implant placement and restoration: case reports.
Authors: Albiero AM, Benato R, Degidi M Abstract The loss of the buccal alveolar plate following tooth extraction in the maxillary anterior region is an especially challenging condition for the clinician. Immediate implant placement with a flapless approach has been suggested in order to reduce postextraction bone loss. In the presence of a significant vertical gap in the buccal plate after tooth extraction, most authors still recommend a bone augmentation procedure before implant placement. In these reports, buccal bone plate regeneration was obtained through a flapless approach and immediate postextraction implan...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Analysis of soft tissue display during enjoyment smile. Part II: elder Caucasians.
Authors: Nelson K, Hu X, Nack C, Nahles G, Mehrhof J, Nahles S Abstract Esthetic parameters in elder patients are essential in esthetic oral rehabilitation. To date, no study has quantified the amount and frequency of soft tissue display in the papilla area in patients over 50 years of age. Photographic examination of 42 fully dentate patients with a mean age of 59 years was performed during enjoyment smile. Digital processing and measurement of the tooth, gingiva, and papilla display revealed that over 90% of subjects displayed soft tissue in the papilla area of the anterior teeth and first premolar during enjoyme...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Retrospective study of sintered porous-surfaced dental implants placed in the augmented sinus.
Authors: Sohn DS, Lee JM, Park IS, Jung HS, Park DY, Shin IH Abstract The purpose of this study was to analyze clinical and radiographic outcomes of sintered porous-surfaced dental implants placed in partially edentulous posterior maxillae. The study group consisted of 42 partially edentulous patients who received sinus augmentation using the lateral window technique or crestal approach at Catholic University Hospital of Daegu and one private clinic. The 42 patients received a total of 92 sintered porous-surfaced dental implants in the edentulous posterior maxillae. All implants were restored with fixed prostheses....
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Emergence profile design based on implant position in the esthetic zone.
Authors: Steigmann M, Monje A, Chan HL, Wang HL Abstract One of the most challenging tasks in implant dentistry is to fulfill the esthetic expectations of patients. While implant positioning and adequate amounts of soft and hard tissues are essential for achieving an esthetic outcome, the emergence profile of an abutment/restoration also plays an important role in the definitive appearance of implant prostheses. Therefore, the purpose of this paper is to propose a clinical guideline for designing an abutment/prosthesis based on implant position. By customizing the emergence profile, the overlying soft tissues could...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research

Maxillary anterior ridge augmentation with recombinant human bone morphogenetic protein 2.
Authors: Edmunds RK, Mealey BL, Mills MP, Thoma DS, Schoolfield J, Cochran DL, Mellonig J Abstract No human studies exist on the use of recombinant human bone morphogenetic protein 2 (rhBMP-2) on an absorbable collagen sponge (ACS) as a sole graft material for lateral ridge augmentation in large ridge defect sites. This series evaluates the treatment outcome of maxillary anterior lateral ridge augmentation with rhBMP-2/ACS. Twenty patients were treated with rhBMP-2/ACS and fixation screws for space maintenance. Cone beam volumetric tomography measurements were used to determine gain in ridge width, and a bone core ...
Source: International Journal of Periodontics and Restorative Dentistry - June 4, 2015 Category: Dentistry Tags: Int J Periodontics Restorative Dent Source Type: research