RESUMO
An approximately 9-month-old fox (Pseudalopex vetulus) was presented with malocclusion and deviation of the lower jaw to the right side. Orthodontic treatment was performed using the inclined plane technique. Virtual 3D models and prototypes of the head were based on computed tomography (CT) image data to assist in diagnosis and treatment.
Assuntos
Raposas , Má Oclusão/veterinária , Anormalidades Maxilofaciais/veterinária , Ortodontia Corretiva/veterinária , Animais , Raposas/anormalidades , Raposas/cirurgia , Masculino , Má Oclusão/diagnóstico , Má Oclusão/cirurgia , Anormalidades Maxilofaciais/diagnóstico , Anormalidades Maxilofaciais/cirurgia , Ortodontia Corretiva/métodos , Resultado do TratamentoRESUMO
This study aimed to develop a plate to treat fractures of the mandibular body in dogs and to validate the project using finite elements and biomechanical essays. Mandible prototypes were produced with 10 oblique ventrorostral fractures (favorable) and 10 oblique ventrocaudal fractures (unfavorable). Three groups were established for each fracture type. Osteosynthesis with a pure titanium plate of double-arch geometry and blocked monocortical screws of free angulation were used. The mechanical resistance of the prototype with unfavorable fracture was lower than that of the favorable fracture. In both fractures, the deflection increased and the relative stiffness decreased proportionally to the diminishing screw number The finite element analysis validated this plate study, since the maximum tension concentration observed on the plate was lower than the resistance limit tension admitted by the titanium. In conclusion, the double-arch geometry plate fixed with blocked monocortical screws has sufficient resistance to stabilize oblique fractures, without compromising mandibular dental or neurovascular structures.
Assuntos
Placas Ósseas/veterinária , Técnicas de Fixação da Arcada Osseodentária/veterinária , Fraturas Mandibulares/veterinária , Animais , Fenômenos Biomecânicos , Placas Ósseas/normas , Cadáver , Simulação por Computador , Análise do Estresse Dentário/veterinária , Cães , Análise de Elementos Finitos , Fixação Interna de Fraturas/instrumentação , Fixação Interna de Fraturas/métodos , Fixação Interna de Fraturas/veterinária , Imageamento Tridimensional , Técnicas de Fixação da Arcada Osseodentária/instrumentação , Modelos Lineares , Masculino , Fraturas Mandibulares/diagnóstico , Fraturas Mandibulares/cirurgia , Resistência à Tração , Tomografia Computadorizada por Raios X/veterináriaRESUMO
The aims of this study were to develop a dental evaluate any oral cavity disease, develop gypsum models of the dental arches, and to register the occlusions found in coatis (Nasua nasua) in captivity Formulation of the dental chart was assisted by intraoral radiographs from the head of an adult coati cadaver of the same species with the following dental formula.: I 3/3, C 1/1, P 4/3, M 2/2. Seven live coatis of the Nasua nasua species were evaluated. Five of the seven coatis presented with various dental abnormalities as follows: dental plaque (71.4 0%), gingivitis (71.4 %), periodontitis (57.1 %), dental stain (42.9 %), dental abrasion (57.1 %), dental fracture (57.1 %), pulp exposure (42.9 %), malocclusion (57.1 %) and supernumerary teeth (14.2 %).
