"Análise da laterotrusão condilar nos movimentos de lateralidade centrífuga e de Bennett em edentados completos" / Condyle laterotrusion analysis on Bennett’s side shift and centrifuge lateral movements in edentate subjects

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

It has been controversial the understanding of both the Bennett’s side shift and Centrifuge lateral movements. Had the inherent questions of TMJ´s inviolability it is not possible to observe its interior directly, thus the analysis of its dynamics during the function becomes questionable. The author worked with images and inferences applied to a methodology used for such end. The proposal of this research was to analyze the behavior of jaw condyle Bennett’s side shift and Centrifuge lateral movements in complete denture wearers. Twenty two subjects had new dentures constructed. The mandible tracings were made using the technique of Gysi with an extra oral device with two registration markers. Instead of wax it was applied a fine articulating paper adhered to the platform by a double face adhesive ribbon. Digitalized images from articulator and from articulating papers were set together. It was used a software of treatment of images both to decide and to test the position of the vertical axle of rotation of the jaw during the Bennett’s side shift and during Centrifuge lateral movement. The results were a predominance of the events where the vertical axis were located in the backward medial region for the centrifuge lateral movement and were located both in the backward medial and in the forward lateral region for the Bennett’s side shift. It had cases where the vertical axle was situated accurately on the center of the condyle sphere, what is supposed to mean that the patient, during the lateral jaw movement did not promote excursion of the working side condyle. In accordance with the methodology applied in this research, the author concluded that the axis of the centrifuge lateral movement is more medial than the one of the Bennett’s side shift, and that in the great majority of the events the axis did not met the condyle sphere of the articulator.

ASSUNTO(S)

prótese total bennett’s movement laterotrusion arco gótico complete denture laterotrusão movimento de bennett gothic arch

ACESSO AO ARTIGO

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