Abstract
Background and aim: Assessment of dentofacial asymmetries and other discrepancies that can affect the horizontal reference lines should be considered initially as a part of the esthetic diagnosis. Some variations of facial asymmetry are not considered an esthetic liability. So the aim of the present study is to determine a layperson’s preference regarding transverse occlusal plane (TOP) orientation in fabrication of a complete denture.Materials and methods: A total of 100 subjects who are edentulous and have enrolled for complete denture fabrication were selected. Photograph of the patient’s face was obtained from the frontal perspective on the day of try-in. The image obtained was edited to orient the occlusal plane in three different cants, zero degree, two degrees, and four degrees to the inter-pupillary line (IL) and presented to the patient. The obtained results were statistically analyzed.Results: The observed data was analyzed using Friedman’s test and Wilcoxon test was used for comparing ordinal data between groups. There was a statistically significant difference in acceptance depending on angulation, χ2(2) = 183.2, p = 0.0001.Conclusion: A cant of two degrees is not perceived by the subject but some subjects’ preference of occlusal plane may be altered according to the commissural canting which cannot be incorporated in complete denture fabrication.
Highlights
The transverse occlusal plane (TOP) when viewed from a frontal perspective should be parallel to the facial horizontal reference lines such as the inter-pupillary line (IL) and the commissure line (CL) to maintain facial harmony
A cant of two degrees is not perceived by the subject but some subjects’ preference of occlusal plane may be altered according to the commissural canting which cannot be incorporated in complete denture fabrication
Posthoc analysis with Wilcoxon signed-rank tests was conducted with a Bonferroni correction applied, resulting in a significance level set at p < 0.017
Summary
The transverse occlusal plane (TOP) when viewed from a frontal perspective should be parallel to the facial horizontal reference lines such as the inter-pupillary line (IL) and the commissure line (CL) to maintain facial harmony. Conditions for each patient should be individually diagnosed. Restorative treatment alone can be a solution depending on a particular situation and the patient’s individual needs. Assessment of dentofacial asymmetries and other discrepancies that can affect the horizontal reference lines should be considered initially as a part of the esthetic diagnosis. Some variations of facial asymmetry are not considered an esthetic liability. The aim of the present study is to determine a layperson’s preference regarding transverse occlusal plane (TOP) orientation in fabrication of a complete denture
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