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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 13.

Curve progression after decompression surgery in patients with mild degenerative scoliosis.
Conclusions Surgical outcomes did not deteriorate in the P group. While curve progression after decompression surgery could not be predicted from the preoperative factors considered, spur formation at the concave side of the curve may be a candidate factor. The results of this study indicate that spinal fixation to halt deformity progression is not always necessary if the patient's pathological condition derives mainly from canal stenosis. PMID: 23373563 [PubMed - as supplied by publisher]
Source: Journal of Neurosurgery.Spine - February 1, 2013 Category: Neurosurgery Authors: Hosogane N, Watanabe K, Kono H, Saito M, Toyama Y, Matsumoto M Tags: J Neurosurg Spine Source Type: research

Transverse clival fracture associated with bilateral petrous fractures extending through the occipital bone.
PMID: 23373798 [PubMed - as supplied by publisher]
Source: Journal of Neurosurgery - February 1, 2013 Category: Neurosurgery Authors: Grossbach AJ, Abel TJ, Menezes AH, Howard MA Tags: J Neurosurg Source Type: research

Severe hypothyroidism presenting as myxedema coma in the postoperative period in a patient taking sunitinib: case report and review of literature
Abstract: The case of a 62-year-old Caucasian woman who underwent urgent hip hemiarthroplasty for repair of a pathological fracture is reported. The patient's medical history was significant for renal cell carcinoma, cerebellar metastases, and sunitinib-induced hypothyroidism. Her intraoperative course was complicated by profound hypothermia, bradycardia, augmentation of neuromuscular blockade, delayed emergence, failure of postoperative extubation, and need for mechanical ventilation. The intensive care course was significant for hypothermia requiring forced-air warming, treatment with intravenous thyroxine (T4), and hemo...
Source: Journal of Clinical Anesthesia - February 1, 2013 Category: Anesthesiology Authors: Abhijit V. Lele, Sarah Clutter, Eleana Price, Martin L. De Ruyter Tags: Case reports Source Type: research

Gastrointestinal and Non-gastrointestinal Presentation in Patients with Celiac Disease.
CONCLUSION: This study indicated that upper abdominal disorders such as abdominal pain and dyspepsia were the most common primary complaints among European patients, whereas Iranian patients had complaints of diarrhea and bloating as the classic presentations of CD. For non-GI symptoms, anemia was the most frequent complaint for both Iranian and Italian patients; however it was significantly higher in Iranians. PMID: 23360628 [PubMed - in process]
Source: Archives of Iranian Medicine - February 1, 2013 Category: Middle East Health Authors: Ehsani-Ardakani MJ, Rostami Nejad M, Villanacci V, Volta U, Manenti S, Caio G, Giovenali P, Becheanu G, Diculescu M, Pellegrino S, Magazzù G, Casella G, Di Bella C, Decarli N, Biancalani M, Bassotti G, Hogg-Kollars S, Zali MR, Rostami K Tags: Arch Iran Med Source Type: research

Impact of oral contraceptive on bone metabolism
Oral contraceptives are used by numerous women very often throughout a prolonged period of time and more and more and more frequently early in life, within the first reproductive years. According to the close relationship between estrogen and bone metabolism, the question of the impact of combined oral contraceptive (COC) on bone needs to be addressed. During adulthood, most studies have reported that COC, even those containing a low dose of ethinyl-estradiol had neutral or possibly beneficial effect on bone health. Use of COC within the perimenopausal years prevents the activation of bone metabolism and the decrease in bo...
Source: Best Practice and Research. Clinical Endocrinology and Metabolism - February 1, 2013 Category: Endocrinology Authors: Florence Trémollieres Source Type: research

Transforaminal epidural steroid injections prevent the need for surgery in patients with sciatica secondary to lumbar disc herniation: a retrospective case series.
Conclusion: Transforaminal epidural steroid injections are an important treatment tool, preventing the need for surgery in 56% of patients with LDH. PMID: 23351495 [PubMed - as supplied by publisher]
Source: Canadian Journal of Surgery - February 1, 2013 Category: Surgery Authors: Manson NA, McKeon MD, Abraham EP Tags: Can J Surg Source Type: research

Survey of terminology used for the intraoperative direction of C-arm fluoroscopy.
Conclusion: Adoption of a common language has been demonstrated to increase efficiency in performing defined tasks with the fluoroscope. We offer a potential system to facilitate communication based on current terminology used among Canadian orthopedic surgeons and radiation technologists. PMID: 23351496 [PubMed - as supplied by publisher]
Source: Canadian Journal of Surgery - February 1, 2013 Category: Surgery Authors: Pally E, Kreder HJ Tags: Can J Surg Source Type: research

Surgical waste audit of 5 total knee arthroplasties.
Conclusion: Total knee arthroplasties produce substantial amounts of surgical waste. En vironmentally friendly surgical products and waste management strategies may allow ORs to reduce the negative impacts of waste production without compromising patient care. Level of evidence: Level IV, case series. PMID: 23351497 [PubMed - as supplied by publisher]
Source: Canadian Journal of Surgery - February 1, 2013 Category: Surgery Authors: Stall NM, Kagoma YM, Bondy JN, Naudie D Tags: Can J Surg Source Type: research

Systematic review of complications after intramedullary fixation for displaced midshaft clavicle fractures.
Conclusion: The noted rates for major complications requiring additional surgery were low, but implant-related problems that require additional surgery might present with high prevalence. Owing to routine implant removal, treatment with intramedullary fixation often requires an additional surgical procedure. PMID: 23351556 [PubMed - in process]
Source: Canadian Journal of Surgery - February 1, 2013 Category: Surgery Authors: Wijdicks FJ, Houwert RM, Millett PJ, Verleisdonk EJ, Van der Meijden OA Tags: Can J Surg Source Type: research

Quality: A Process or an Outcome? It's not what you may think…
PMID: 23371761 [PubMed - as supplied by publisher]
Source: Clinical Orthopaedics and Related Research - February 1, 2013 Category: Orthopaedics Authors: Lee MJ Tags: Clin Orthop Relat Res Source Type: research

[Arthroscopically assisted therapy of avascular necrosis of the femoral head.]
Abstract OBJECTIVE: Preservation of the hip joint function by treatment of the avascular necrosis of the femoral head in adults or at least avoiding progression. INDICATIONS: Avascular necrosis of the femoral head in adults in Steinberg stages I-III. In patients with Steinberg stage IVa (subchondral collapse ≤ 15% of the articular surface, depression < 2 mm) hip joint salvage therapy in early stages of femoral head collapse. CONTRAINDICATIONS: Manifest osteoarthritis of the hip joint. Joint infection. Relative contraindications: subchondral collapse > 1...
Source: Operative Orthopadie und Traumatologie - February 1, 2013 Category: Orthopaedics Authors: Ellenrieder M, Tischer T, Kreuz PC, Fröhlich S, Fritsche A, Mittelmeier W Tags: Oper Orthop Traumatol Source Type: research

Treatment of osteoarthritis of the first carpometacarpal joint by resection-suspension-interposition arthoplasty using the split abductor pollicis longus tendon.
Abstract OBJECTIVE: Reduction of pain and gain of functionality in symptomatic osteoarthritis of the first carpometacarpal joint. INDICATIONS: Idiopathic, rheumatic, or posttraumatic osteoarthritis of the first carpometacarpal joint. RELATIVE CONTRAINDICATIONS: Poor general condition, poor condition of the hand's soft tissue/skin, chronic regional pain syndrome, current or recent infections of the hand, heavy manual labor (decision on a by-case basis). SURGICAL TECHNIQUE: Supine position, hand pronated or slightly tilted. Upper arm tourniquet (Esmar...
Source: Operative Orthopadie und Traumatologie - February 1, 2013 Category: Orthopaedics Authors: Harenberg PS, Jakubietz MG, Jakubietz RG, Schmidt K, Meffert RH Tags: Oper Orthop Traumatol Source Type: research

[Arthoscopic arthrolysis of the elbow joint.]
Abstract OBJECTIVE: Arthroscopic assisted improvement of range of motion in elbow stiffness. Detailed diagnostic evaluation including medical history and preoperative radiographs, CT and MRI scans are necessary for planning the operative treatment. INDICATIONS: Restricted range of motion < 30° in extension and/or more than 100° in flexion related to intraarticular causes (loose bodies, osteophytes or contracture of the capsule). CONTRAINDICATIONS: Extension deficit > 30°, extraarticular causes (e.g., heterotopic ossifications), nerve irritation, incongruit...
Source: Operative Orthopadie und Traumatologie - February 1, 2013 Category: Orthopaedics Authors: Achtnich A, Forkel P, Metzlaff S, Petersen W Tags: Oper Orthop Traumatol Source Type: research

[Treatment of fingertip defect injuries with a semiocclusive dressing according to Mennen and Wiese.]
Abstract OBJECTIVE: The goal of conservative treatment of fingertip defects is to restore a stable and bulky pulp with recovery of sensitivity and a good skin quality. INDICATIONS: Traumatic defects of the fingertip with or without involvement of the fingernail and/or exposed distal phalanx. CONTRAINDICATIONS: Fractures of the distal phalanx with dislocation or joint involvement, necessitating an osteosynthesis. Allergy to any component of the dressing material. DRESSING TECHNIQUE: Application of a semiocclusive film dressing (polyurethane, bacteria...
Source: Operative Orthopadie und Traumatologie - February 1, 2013 Category: Orthopaedics Authors: Mühldorfer-Fodor M, Hohendorff B, Vorderwinkler KP, van Schoonhoven J, Prommersberger KJ Tags: Oper Orthop Traumatol Source Type: research

[Decompression of lumbar lateral spinal stenosis : Full-endoscopic, interlaminar technique.]
[Decompression of lumbar lateral spinal stenosis : Full-endoscopic, interlaminar technique.] Oper Orthop Traumatol. 2013 Feb 1; Authors: Ruetten S, Komp M, Hahn P, Oezdemir S Abstract OBJECTIVE: Decompression in lumbar recess stenosis in a full-endoscopic technique using an interlaminar approach. INDICATIONS: Lumbar recess stenosis due to ligamentous, osseous, discogenic compression, and/or juxta-facet cysts. CONTRAINDICATIONS: Pure back pain, instability/deformity requiring correction, pure foraminal stenosis. SURGICAL TECHNIQUE: Introducti...
Source: Operative Orthopadie und Traumatologie - February 1, 2013 Category: Orthopaedics Authors: Ruetten S, Komp M, Hahn P, Oezdemir S Tags: Oper Orthop Traumatol Source Type: research

[Conservative therapy of osteoarthritis.]
Abstract Osteoarthritis of the knee is a degenerative joint disease with progressive degradation of articular cartilage and subchondral bone. Symptoms may include joint pain, tenderness, stiffness, locking and joint effusion depending on the stage of the disease. In an effort to delay major surgery, patients with knee osteoarthritis are offered a variety of nonsurgical modalities, such as weight loss, exercise, physiotherapy, bracing, orthoses, nonsteroidal anti-inflammatory drugs (NSAIDs) and intra-articular viscosupplementation or corticosteroid injection. In general, the goals of these therapeutic options are to...
Source: Der Orthopade - February 1, 2013 Category: Orthopaedics Authors: Diehl P, Gerdesmeyer L, Schauwecker J, Kreuz PC, Gollwitzer H, Tischer T Tags: Orthopade Source Type: research

[Subgroup-specific therapy of low back pain : Description and validity of two classification systems.]
CONCLUSION: The reliability of the described classification systems is moderate to good, aspects of validity have been shown. Their implementation in clinical practice seems recommendable. PMID: 23370728 [PubMed - as supplied by publisher]
Source: Der Orthopade - February 1, 2013 Category: Orthopaedics Authors: Schäfer A, Gärtner-Tschacher N, Schöttker-Königer T Tags: Orthopade Source Type: research

Large increases in adipose triacylglycerol flux in Cushingoid CRH-Tg mice are explained by futile cycling
Glucocorticoids are extremely effective anti-inflammatory therapies, but their clinical use is limited due to severe side effects, including osteoporosis, muscle wasting, fat redistribution, and skin thinning. Here we use heavy water labeling and mass spectrometry to measure fluxes through metabolic pathways impacted by glucocorticoids. We combine these methods with measurements of body composition in corticotropin-releasing hormone (CRH)-transgenic (Tg)+ mice that have chronically elevated, endogenously produced corticosterone and a phenotype that closely mimics Cushing's disease in humans. CRH-Tg+ mice had increased adip...
Source: AJP: Endocrinology and Metabolism - February 1, 2013 Category: Endocrinology Authors: Harris, C., Roohk, D. J., Fitch, M., Boudignon, B. M., Halloran, B. P., Hellerstein, M. K. Tags: Articles Source Type: research

Animal-related injuries in a resource-limited setting: experiences from a Tertiary health institution in northwestern Tanzania
Conclusion: Animal related injuries constitute a major public health problem in our setting and commonly affect the young adult male in their economically productive age-group. Measures towards prevention and proper treatment and follow up are important in order to reduce morbidity and mortality resulting from this form of trauma
Source: World Journal of Emergency Surgery - February 1, 2013 Category: Emergency Medicine Authors: Japhet GilyomaJoseph MabulaPhillipo Chalya Source Type: research

NICE consultation opens on 2014/15 Clinical Commissioning Group Outcomes Indicator Set
Source: NICE Area: News NICE has opened its consultation on potential additional indicators for the proposed 2014/2015 Clinical Commissioning Group Outcomes Indicator Set (CCGOIS, formerly known as the 'Commissioning Outcomes Framework'). Anyone with an interest in health is invited to comment on the 32 indicators which cover a broad range of topics, including chronic heart failure, cancer, and hip fracture. The consultation will take place between Friday 1 February and Friday 1 March.
Source: NeLM - News - February 1, 2013 Category: Drugs & Pharmacology Source Type: news

Evaluating the need for routine supplemental oxygen in postoperative total joint replacement patients.
PMID: 23351245 [PubMed - in process]
Source: Journal of Perianesthesia Nursing - February 1, 2013 Category: Nursing Authors: Welle T, Basol R, Schneider N Tags: J Perianesth Nurs Source Type: research

Measurement of acute nonspecific low back pain perception in primary care physical therapy: reliability and validity of the brief illness perception questionnaire
Conclusion: The Dutch version of the Brief Illness Perception Questionnaire is an appropriate instrument for measuring patients' perceptions in acute low back pain patients, showing acceptable internal consistency and reliability. Concurrent validity is adequate, however, the instrument may be unsuitable for detecting changes in low back pain perception over time.
Source: BMC Musculoskeletal Disorders - February 1, 2013 Category: Orthopaedics Authors: Joannes HallegraeffCees van der SchansWim KrijnenMathieu de Greef Source Type: research

Synoviocytes protect cartilage from the effects of injury in vitro
Conclusions: These results support the importance of evaluating more than one synovial joint tissue when investigating injury induced OA.
Source: BMC Musculoskeletal Disorders - February 1, 2013 Category: Orthopaedics Authors: Christina LeeJohn KisidayC McIlwraithAlan GrodzinskyDavid Frisbie Source Type: research

Recent recommendations on steroid-induced osteoporosis: More targeted, but more complicated
The latest recommendations for preventing and treating glucocorticoid-induced osteoporosis, published by the American College of Rheumatology (ACR) in 2010, incorporate developments that occurred since the release of its 2001 guidelines, such as new drugs and the World Health Organization’s Fracture Risk Assessment Tool, or FRAX. They outline a more targeted approach but have the possible disadvantage of being more complicated and therefore harder to use.
Source: Cleveland Clinic Journal of Medicine - February 1, 2013 Category: Journals (General) Authors: DEAL, C. L. Tags: Review Source Type: research

Clinical and Radiologic Predictive Factors of Septic Hip Arthritis: Kung J, Yablon C, Huang E, Hennessey H, Wu J. AJR Am J Roentgenol 2012;199:868–72.
The authors sought to identify the clinical and radiologic factors associated with positive culture during image-guided hip joint aspiration. Early diagnosis of septic hip arthritis has been considered critical because cartilage destruction can occur as early as 1–2 days after symptom onset. Nevertheless, distinguishing between septic hip arthritis, osteoarthritis, fracture, and inflammatory arthropathy can be challenging. The authors hypothesized that the presence of a sinus tract, the presence of fluid turbidity, and the amount of fluid aspirated could serve as predictors for septic hip arthritis.
Source: The Journal of Emergency Medicine - February 1, 2013 Category: Emergency Medicine Authors: Dowin H. Boatright Tags: Abstracts Source Type: research

Bone disorders: A new promoter of bone regeneration
Nature Reviews Drug Discovery 12, 102 (2013). doi:10.1038/nrd3949 Author: Charlotte Harrison Cell-to-cell communication facilitates the healing of bone fractures. By screening molecules secreted from human mesenchymal stem cells during osteogenesis, this study identified DJ1 as a novel angiogenic factor that mediated crosstalk between osteoblasts and endothelial cells, and promoted osteogenesis through the activation of fibroblast growth
Source: Nature Reviews Drug Discovery - February 1, 2013 Category: Drugs & Pharmacology Authors: Charlotte Harrison Tags: Research Highlight Source Type: research

Information for Readers
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Tags: Frontmatter Source Type: research

Editors
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Tags: Frontmatter Source Type: research

Table of Contents
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Tags: Frontmatter Source Type: research

Directory: AAO Officers and Organizations
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Source Type: research

Defense from within: A guide to success as a dental malpractice defense expert
Mr Krompier has been a certified trial attorney for over 30 years and specializes in the defense of dental health care providers in New Jersey and New York. He has been named a New Jersey “super lawyer” and has been certified by the National Board of Trial Advocacy, the National Board of Civil Pretrial Practice Advocacy, and the American Board of Trial Advocates. Mr Krompier has defended over 500 malpractice lawsuits, all of which leads me to conclude that this guy really knows his stuff.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Laurance Jerrold Tags: Book Review Source Type: research

Earn 3 hours of CE credit
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Allen Moffitt Tags: Continuing Education Source Type: research

Confidence intervals rather than P values
In the previous article, I explained the meaning of the P value and discussed the danger of focusing the interpretation of the study results solely on P values. A better approach in presenting trial results is by reporting effect estimates (see the previous articles on effect estimates) and confidence intervals.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Nikolaos Pandis Tags: Statistics and Research Design Source Type: research

He did it…No, he did it
Have you ever shared treatment of a patient with another colleague? For example, maybe you practice in an office that has several partners and associates, and all the doctors treat everyone unless the patient has specifically requested that only 1 doctor provide his or her treatment. Legally, we are dealing with a scenario in which a patient is treated by multiple practitioners.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Laurance Jerrold Tags: Litigation and Legislation Source Type: research

A novel biomechanical model assessing continuous orthodontic archwire activation
Conclusions: The birth-death technique proved to be a useful biomechanical simulation method for placement of a continuous archwire in orthodontic brackets. The ability to view the stress distribution with proper anatomy and appliances advances our understanding of orthodontic biomechanics.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Christopher Canales, Matthew Larson, Dan Grauer, Rose Sheats, Clarke Stevens, Ching-Chang Ko Tags: Techno Bytes Source Type: research

Autotransplantion of a displaced mandibular second premolar to its normal position
The patient was a 13-year-old Korean girl who had a displaced mandibular second premolar. She was reluctant to undergo a lengthy orthodontic treatment and opted instead for transplantation of the premolar to its usual site. On the basis of computed tomography, a replica tooth model was manufactured to shorten the extraoral time, and a root canal treatment was performed because root formation was complete. No negative signs or symptoms were found during a 3-year follow up. Autotransplantation for this patient obviated the need for orthodontic traction and prosthetic therapy.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Young-Seok Park, Min-Ho Jung, Won-Jun Shon Tags: Clinician's Corner Source Type: research

Correction of an asymmetric maxillary dental arch by alveolar bone distraction osteogenesis
This case report describes a new surgical orthodontic approach involving alveolar bone distraction osteogenesis for correction of an asymmetric maxillary dental arch. The treatment was combined with conventional orthognathic surgery to improve the mandibular lateral deviation. This new treatment strategy produced an ideal dental arch and a symmetric facial appearance efficiently and effectively.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Seigo Ohba, Takayoshi Tobita, Nobutaka Tajima, Kyoko Matsuo, Noriaki Yoshida, Izumi Asahina Tags: Case Reports Source Type: research

The segmented arch approach: A method for orthodontic treatment of a severe Class III open-bite malocclusion
This article reports the case of a girl aged 10.7 years with a skeletal Class III malocclusion and an open bite. The treatment mechanics were based on compensatory dental changes performed to close the bite and correct the skeletal Class III malocclusion. The patient had a deep maxillary deficiency, and the lower facial third was severely enlarged. In this article, we aimed to describe a simple mechanical approach that will close the bite through changes in the occlusal plane (segmentation of arches). It is an extremely simple method that is easily tolerated by the patient. It not only closes the bite effectively but also ...
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Eduardo Espinar-Escalona, José María Barrera-Mora, José María Llamas-Carreras, María Belén Ruiz-Navarro Tags: Case Reports Source Type: research

Traumatic loss of a maxillary central incisor treated with nonextraction orthodontics
This case report describes the orthodontic treatment of a girl who lost her maxillary left central incisor from trauma. The patient had a concave profile, a Class I molar relationship on the right side and a Class II molar relationship on the left side, with a slight maxillary retrusion, an anterior edge-to-edge bite, and a posterior crossbite. Therefore, the treatment consisted of rapid palatal expansion to widen the maxilla in a transverse direction along with reverse headgear to improve the incisor relationship. The crown of the left canine was modified to resemble the left lateral incisor, and a porcelain veneer was pl...
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Shiyou Huang, Ting Kang, Yinzhong Duan Tags: Case Reports Source Type: research

Tongue posture improvement and pharyngeal airway enlargement as secondary effects of rapid maxillary expansion: A cone-beam computed tomography study
Conclusions: In children with nasal obstruction, RME not only reduces nasal obstruction but also raises tongue posture and enlarges the pharyngeal airway.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Tomonori Iwasaki, Issei Saitoh, Yoshihiko Takemoto, Emi Inada, Eriko Kakuno, Ryuzo Kanomi, Haruaki Hayasaki, Youichi Yamasaki Tags: Original Articles Source Type: research

Relationship between body mass index percentile and skeletal maturation and dental development in orthodontic patients
Introduction: The rate of obesity in children and adolescents is a current public health concern. The aim of this study was to investigate the relationship between body mass index (BMI) percentile and skeletal and dental maturity in adolescent orthodontic patients.Methods: Orthodontic patients between 8 and 17 years of age were assessed with a retrospective chart review. Skeletal maturation was assessed by using the cervical vertebral method, dental age with the Demirjian assessment method, and weight status with the BMI percentile. Linear regression and logistic regression models were used to assess the effect of the BMI ...
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Kervin B. Mack, Ceib Phillips, Nina Jain, Lorne D. Koroluk Tags: Original Articles Source Type: research

Influence of the expansion screw height on the dental effects of the hyrax expander: A study with finite elements
Conclusions: These findings might explain the importance of carefully planning the height of the hyrax expander screw, since, depending on this position, different tooth movements can be achieved. From an orthopedic perspective, the ideal screw position might be slightly above the maxillary first molars' center of resistance; this would generate less dental tipping.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Rafael Marques de Sousa Araugio, Jánes Landre, Diana de Lourdes Almeida Silva, Wellington Pacheco, Matheus Melo Pithon, Dauro Douglas Oliveira Tags: Original Articles Source Type: research

Illusions of fusions: Assessing cervical vertebral fusion on lateral cephalograms, multidetector computed tomographs, and cone-beam computed tomographs
Conclusions: Lateral cephalograms do not provide dependable data to assess the cervical spine for fusions and cause false-positive detections. Both MDCT interpreted by general radiologists and CBCT interpreted by oral radiologists are reliable methods to exclude potential fusions. Degenerative osteoarthritic changes are diagnosed more accurately and consistently by general radiologists evaluating MDCT.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Raphael Patcas, Dominika Tausch, Nikolaos Pandis, Mirjana Manestar, Oliver Ullrich, Christoph A. Karlo, Timo Peltomäki, Christian J. Kellenberger Tags: Original Articles Source Type: research

Development of labial gingival recessions in orthodontically treated patients
Conclusions: The prevalence of gingival recessions steadily increases after orthodontic treatment. The recessions are more prevalent in older than in younger patients. No variable, except for age at the end of treatment, seems to be associated with the development of gingival recessions.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Anne Marie Renkema, Piotr S. Fudalej, Alianne Renkema, Rosemie Kiekens, Christos Katsaros Tags: Original Articles Source Type: research

Three-dimensional finite element analysis of the craniomaxillary complex during maxillary protraction with bone anchorage vs conventional dental anchorage
Conclusions: We should determine the direction of applied force according to the anchorage location and skeletal characteristics of patients before maxillary protraction. The dramatic effects of maxillary protraction with bone anchorage can be based on the advantages of bone anchorage, not on the changes in the region of the applied force.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Xiulin Yan, Weijun He, Tao Lin, Jun Liu, Xiaofeng Bai, Guangqi Yan, Li Lu Tags: Original Articles Source Type: research

Cortical bone thickness of the alveolar process measured with cone-beam computed tomography in patients with different facial types
Conclusions: Clinicians should be aware of the probability of thin cortical bone plates and the risk of mini-implant failures at maxillary buccal alveolar mini-implant sites in high-angle patients, and at mandibular buccal alveolar mini-implant sites between the canine and the first premolar in normal and high-angle patients.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Fulya Ozdemir, Murat Tozlu, Derya Germec-Cakan Tags: Original Articles Source Type: research

Factorial analysis of variables affecting bone stress adjacent to the orthodontic anchorage mini-implant with finite element analysis
Conclusions: Increased exposure lengths resulted in higher bone stresses adjacent to the mini-implant. The percentage of contribution of the insertion angle of the mini-implant (6.03%) was also statistically significant but much less than that of the exposure length (82.35%). The direction of orthodontic force had no significant effect on cortical bone stress.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Ting-Sheng Lin, Feng-De Tsai, Chih-Yu Chen, Li-Wen Lin Tags: Original Articles Source Type: research

Placement angle effects on the success rate of orthodontic microimplants and other factors with cone-beam computed tomography
We examined 228 orthodontic microimplants implanted into the maxillary buccal alveolar bone of 130 patients (33 men, 97 women) with malocclusion. Vertical placement angle, horizontal placement angle, root proximity, and cortical bone thickness were measured, and the correlations between these measurements and orthodontic microimplant success rates and the correlations among the measurements were evaluated.Results: The overall success rate was 87.7% (200 of 228). The orthodontic microimplant success rate statistically significantly increased as root proximity (distance from the orthodontic microimplant to the root surface) ...
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Yi-Ra Jung, Sang-Cheol Kim, Kyung-Hwa Kang, Jin-Hyoung Cho, Eon-Hwa Lee, Na-Young Chang, Jong-Moon Chae Tags: Original Articles Source Type: research

Axes of resistance for tooth movement: Does the center of resistance exist in 3-dimensional space?
Conclusions: Three-dimensional axes of resistance, or their 2-dimensional projection intersections, should be used to plan movement of an arbitrary tooth. Clinical approximations to a small 3-dimensional “center of resistance volume” might be adequate in nearly symmetric periodontal ligament cases.
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Rodrigo F. Viecilli, Amanda Budiman, Charles J. Burstone Tags: Original Articles Source Type: research

Residents' journal review
Periodontal (PDL) cells play an essential role in mechano-induced bone remodeling related to orthodontic tooth movement. However, the specific biochemical response of these cells to mechanical stimuli is not fully understood. In this investigation, a PDL tissue model was established through 3-dimensional culturing of human PDL cells in a collagen scaffold, which has been shown to simulate the behavior of the human PDL. The goal was to investigate and analyze the time-course gene expression profiles of this newly established PDL tissue model under static compression to provide new insight into the biomechanical behavior of ...
Source: American Journal of Orthodontics and Dentofacial Orthopedics - February 1, 2013 Category: Dentistry Authors: Robert Boyd, HeeSoo Oh Tags: Residents' Journal Review Source Type: research