Meeting abstract
An Evaluation of the Quality of Tooth Preparation with Intraoral Parallometer-Axisgraph - Pilot Study
R. Gržić
I. Uhač
I. Jonjić
Z. Delić
J. Borčić
M. Muhvić-Urek
Abstract
Measuring of the axial angle in practice shows an average angle of 20 degrees. The result of the high taper angles is a nonsatisfactory resistance form in 22.5% cases. The purpose was to examine the efficiency of the Jonjić oral parallelometer, known as the "AXISGRAPH", with respect to basic ergonomic rules, leading to savings in working energy and time and an increase in the quality
of the preparation.
METHODS: On the basis of clinical cases models were made of the upper and of the lower jaw of acrylic resin. The practitioner, who has 10 years experience, initially prepared each model set in a KAWO-EWL model, conventionally using freehand preparation, and then with
an Axisgraph. Both models were in the same condition. Comparison was made between the time required for preparation, working energy used, and the quality of the preparation. The quality of the preparation was determined using the axial angle of the prepared tooth, measured by the method described in Jonjic's dissertation.
RESULTS: The freehand preparation took 80 minutes while preparation with the Axisgraph took 50 minutes. The average angle in freehand preparation was 15.03 degrees while, (the average angle of preparation was 10.4 degrees) using Axisgraph, and in 30 minutes less time than the freehand preparation.
CONCLUSION: Preparation with the Axisgraph significantly saves time on preparation and allows better quality for the prepared tooth.
Keywords
Hrčak ID:
10234
URI
Publication date:
15.9.2002.
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