Abstract

Objectives: To determine the normal size of the mandible and the difference of the dental arch length and the total teeth size space that is important for prevention of mandibular third molar impaction.

Method: 102 subjects were divided into two groups, based on the eruption of mandibular third molars. Impacted mandibular third molar (Group1) comprised of 50 subjects and the erupted (Group 2) comprised of 52 subjects. Mandibular length, width, index, total teeth size, dental arch length, dissimilarity in dental arch length and the total teeth size were assessed.

Results:  There was a significant difference in the dental arch length, difference of dental arch length and total teeth size among the 2 groups in both genders. A noteworthy contrast was seen in the mandibular length (P < 0.001), mandibular width (P < 0.001), dental arch length (P < 0.001), total teeth size (P - 0.002), difference in dental arch and total tooth size (P-0.001) between males and females. The normal sized mandible should have a length within the range of 13.5cm to 17.5cm for males and 13.0cm to 17.0 cm for females while normal dental arch-total teeth size difference range should be in the range of 0.40cm - 1.40 cm in males and 0.20cm -1.20cm in females for proper third molar positioning.

Conclusions: Based on the above findings, it may be justified to perform a preventive or therapeutic surgical removal of the lower third molars of the post pubertal patients whose parameters fall below these set values.

Keywords: Mandibular Third Molar; Impaction; Dental Arch Length; Mandibular Index

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Citation

Citation: Asha V., et al. “Assessment of Mandibular and Dental Arch Profiles in Subjects with Mandibular Third Molar Impaction”. Acta Scientific Dental Sciences 5.2 (2021): 45-51.

Copyright

Copyright: © 2021 Asha V., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.