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Pesquisa Científica

v. 22 n. 60 (2013): ROBRAC

Evaluation fo alternative dispositives to the face-bow for mounting casts in semi-adjustable articulators.

DOI
https://doi.org/10.36065/robrac.v22i60.747
Enviado
abril 10, 2013
Publicado
maio 7, 2013

Resumo

Objective. The aim of this study was to evaluate an alternative technique to face-bow for mounting casts in semi-adjustable articulators.  Material and methods. Nine students from the 8th and 10th periods of the Federal University of Goias, aged over 18 years and whom presented complete natural dentition were included in the study. The four cast maxillaries of each subject were mounted in a single semi-adjustable articulator, using one of the following mounting techniques: face-bow, universal mounting jig of 0º, of 15º or universal mounting jig of 20º. On each side of the articulator three points were defined: one in the articulator (A, in the condylar region) and two in the cast (B and C). Images were obtained on each side of the articulator. Using Image J software, the angle "β" formed by the intersection of the line segments AB/BC was acquired. The level of significance was set at α = 0.05. Results. Only the universal mounting jig of 15 degrees was not significantly different to the face-bow. Whereas, the universal jigs of zero and 20 degrees, showed differences to the face-bow and the 15º universal jig (p < 0.05). Conclusions. The universal mounting jig could represent an alternative to the face-bow and might encourage the use of a semi-adjustable articulator, which has been shown to be indispensable in a large number of clinical situations.