Comparison of autologous and heterologous bone graft stability effects for filling maxillary bone gap after Le Fort I osteotomy.

BACKGROUND: The amount of postoperative maxillary relapse of two different bone graft materials after Le Fort I osteotomy were compared in this study. OBJECTIVES: The aim of this study is to compare postoperative maxillary relapse rates using heterologous and autologous graft materials after Le Fort I osteotomy. MATERIAL AND METHODS: A total of 80 patients who had developmental malocclusion were analyzed retrospectively in this study. Twenty nine (36.2%) and 51 (63.8%) patients underwent Le Fort I osteotomy, and Le Fort I and bilateral sagittal split ramus osteotomy (two-jaw surgery), respectively. Forty two (52.5%) maxillary bone gaps were filled with heterologous bone grafts (group A) and 38 (47.5%) were filled with autologous bone grafts (group B) after Le Fort I osteotomy. The cephalometric graphics and measurements were taken before (T1), 1 week after (T2), and 1 year after (T3) the surgery. The results were documented and determined by the Dolphin imaging 10.5 (Dolphin Imaging, Chatsworth, Calif.) computer program for skeletal relapse. Whether or not the relationship between group A's and B's maxillary relapse rates was evaluated in the postoperative period. RESULTS: It was observed that both graft materials have positive effects on maxillary relapse rate in the postoperative period. When the groups are compared to each other, the relapse rates were similar between group A (8.3%) and group B (10.8%) (p>0.05). CONCLUSIONS: Heterologous bone graft material (Osteoplant®-Flex) is thought to be a good alternative to autologous grafts in decreasing the relapse rates and reducing the morbidity of the donor area of the patients who underwent Le Fort I osteotomy.

[Orthodontic correction of a complex malocclusion of the canine teeth of dento-alveolar and skeletal origin using a model cast device in the upper jaw of the dog]. / Orthodontische Korrektur einer komplexen, dentoalveolär und skelettal bedingten Canini-Malokklusion mittels einer Modellguss-Apparatur im Oberkiefer beim Hund.

Malocclusion of the canines, which in dogs is frequent and often has a congenital pattern, remains a challenge to treat. Steeply positioned lower jaw canines are corrected by means of a specifically designed orthodontic intervention. The case at hand was characterized by a combination of a slight skeletal distal bite and compensatory distal tilt of the entire premaxilla (retrusion, caudal tilt) with a mesial tilt of the canines in the upper jaw (rostral and anterior tilt). An individual solution was found which resulted in a functional adjustment of both upper and lower jaws. A model cast device which included both appropriately tilted areas and screws to ensure distal adjustment solved the problem.

Etiologia das más oclusöes: causas hereditárias e congênitas, adquiridas gerais, locais e proximais (hábitos bucais) / Etiology of malocclusion: hereditary and congenital causes, general and local factors and abnormal habits

Os autores objetivaram discutir os fatores etiológicos das más oclusöes, expondo o aspecto multifatorial das mesmas, desde que para o desvio da normalidade, participam conjuntamente as causas hereditárias, as congênitas, as adquiridas de ordem geral ou local, assim com os hábitos bucais. O assunto ganha importância ao prover subsídios para que se possa diagnosticar e remover os fatores causais das más oclusöes, prevenindo-as em idades precoces, ou garantindo a estabilidade da correçäo ortodôntica. Ademais, permite o esclarecimento, aos pais, da origem da anormalidade diagnosticada em seus descendentes

Multidisciplinary management of congenital and acquired compensated malocclusions: diagnosis, etiology and treatment planning.

Restoration of optimal occlusal function, consistent with desirable esthetics and a favorable long-term prognosis, is the clinical goal for management of compensated malocclusions in partially edentulous patients. An appropriate diagnostic work-up includes a careful assessment of etiology, relative to both genetic and environmental factors. Esthetic and cost-effective restoration of occlusal function often requires adjunctive orthodontic therapy, integrated into a comprehensive treatment plan. Alignment of abutments, management of edentulous space and enhancement of soft tissue contours are important preprosthetic objectives. Osseointegrated dental implants provide occlusal stops to open the vertical dimension of occlusion and serve as rigid anchorage for three-dimensional orthodontic alignment of the residual dentition. Carefully coordinated preprosthetic treatment to establish bilateral posterior occlusion (molars and/or implants) is an important goal for achieving a biomechanically-optimized restoration of occlusion. Fundamental diagnostic and treatment planning procedures are reviewed for the multidisciplinary management of partially edentulous, compensated malocclusions. Determining the probable etiology of a malocclusion is an important prerequisite for formulating a treatment plan with a reasonable probability of success. Diagnostic considerations are presented and clinical examples of specific orthodontic methods are illustrated. To demonstrate the application of fundamental principles at the clinical level, a case report is presented with a diagnosis and treatment plan for a malocclusion with both genetic and functional implications.

Mordida cruzada posterior funcional / Posterior functional crossbite

Revisäo de literatura sobre mordida cruzada posterior funcional, relato de caso clínico onde o tratamento constitui-se de ajuste oclusal através de desgaste seletivo nos pontos de contato prematuro, realizado na clínica de Pós-Graduaçäo em Odontopediatria da Universidade Federal de Santa Catarina.