In tooth selection for dentures, the size of the tooth is really important. To estimate the size, a group of landmarks of the face have been investigated. This study evaluated the relationship between the length and width of maxillary central incisors and measurable indices of the face in patients with complete denture.
A descriptive-analytic cross-sectional study was done in 40 people (mean age: 55 years old) with complete denture in Dental Department affiliated with Mazandaran University of Medical Sciences, 2018. The width of the anterior maxillary teeth in the prostheses was determined based on the corners of the lips and the height of the teeth was determined based on the height of the wax-rim. We also investigated how close was the size of teeth arranged in dentures to inter-zygomatic width and face height.
The mean inter-zygomatic width was 118 mm in males and 120 mm in females, and the mean widths of the maxillary central incisors on dentures in males and females were 8.155 and 7.895 mm, respectively. There was no significant correlation between inter-zygomatic and maxillary central incisor width in dentures among males (P=0.204) and females (P=0.508). In this study, the teeth selected were wider and shorter than inter-zygomatic indices and facial height.
The correlation between maxillary central incisor width and bizygomatic width could differ based on gender and genetic and geographical variations. Therefore, these indices should be investigated in different genetic populations.
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