Date of Award

Spring 1994

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Dentistry

First Advisor

Ferguson, Donald J.

Second Advisor

Schuckit, William I

Third Advisor

Pincsak, John J.

Abstract

Dental articulators are designed to simulate mandibular movement in man. The design of articulators varies from a simple hinge to very complex, fully adjustable instruments. Knowledge of the TMJ function needs to be continuously translated into changes in the technical design of articulators. The Polycentric Hinge Articulator (POLY) is a contemporary, innovative device that has evolved from the practice of arthroscopic surgery. Designers of the POLY claim that their articulator is anatomically consistent with observations made during direct visualization of the TMJ during arthroscopic surgery. Furthermore, they contend that the POLY more accurately replicates mandibular movement and that using the POLY will simplify clinical procedures like occlusal splint fabrication. The purpose of this study was to compare the clinical adjustment time needed to achieve single point contact of all the mandibular buccal cusps against a flat plane maxillary occlusal splint fabricated in the POLY and the SAM 2 articulator. Fifteen adult subjects volunteered to participate in the study at Marquette University School of Dentistry, Orthodontic department. The sample consisted of five females and ten males with a mean age of 27 years. 5 months and a range of 25 years, 9 months to 31 years, 7 months. A maxillary occlusal splint was fabricated for each subject on each articulator and adjusted in the laboratory to the specified occlusion.

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