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Quintessence Publishing: Journals: ORTHODONTICS
The Art and Practice of Dentofacial Enhancement

Formerly World Journal of Orthodontics

Edited by
Rafi Romano, DMD, MSc (Editor-in-Chief)

ISSN 2160-2999 (print) / ISSN 2160-3006 (online)

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Summer 2004
Volume 5 , Issue 2

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Position and Orientation of the Maxillary First Permanent Molar and Localized Attachment Loss

Alf Volchansky, BDS, PhD/Bill Evans, BDS, DipOrth/Peter Cleaton-Jones, BDS, MBBCh, PhD, DSc

Pages: 141146
PMID: 15615132

Aim: To investigate associations between the position and orientation of the maxillary first permanent molar and localized attachment loss (localized gingival recession or alveolar bone concavity) at the mesiopalatal aspect of this tooth. Methods: The study samples were 30 orthodontic study casts of young patients treated without premolar extractions, 45 pretreatment adult periodontal patient study casts, and 56 adult skulls. Measurements made were the maxillary first permanent molar crown angulation, inclination, rotation, and arch position, as well as the presence or absence of localized gingival recession/alveolar bone concavity at the mesiopalatal aspect of the tooth. Results: Localized attachment loss was most frequent in the periodontal study casts. The localized attachment loss was significantly associated with crown angulation, inclination, and type of sample but not with crown rotation and arch position. Conclusion: Orthodontists need to consider the final position of the maxillary first molar crown in terms of its angulation and inclination to reduce the likelihood of the localized attachment loss at the mesiopalatal aspect of the maxillary first molar. World J Orthod 2004;5:141146.

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