An orthopantomographic study of prevalence of impacted teeth.
ABSTRACT Orthopantomograms of a total of 4,063 individuals were included in the study and were taken from patients of the Institute of Dentistry, University of Turku. Impacted teeth were found in 14.1% of the patients. The teeth most frequently impacted were the third molars, 76.1%, and of these, no difference between the maxilla and mandible was observed. No difference in sex in the prevalence of third molars was observed. The prevalence of impacted maxillary cuspids was higher in females than in males. When the prevalence of the third molars in different age-groups was studied, a decrease was found with an increase in age. The prevalence of impacted cuspids was approximately the same in different age-groups.
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ABSTRACT: To determine the prevalence of mandibular second molar impaction in orthodontic patients of two ethnic groups, present treatment options and discuss their outcome. 6500 panoramic radiographs of orthodontically treated patients (3500 Israeli and 3000 of Chinese-American origin) aged 11-15 years were examined for mandibular second molar impactions. 120 patients with 165 impacted mandibular second molars were identified, presenting a prevalence of 1.8%. Many (88%) were mesially angulated. Impactions were more prevalent in the Chinese-American group than in the Israeli group (59% and 41%, respectively). Sequential treatment options are presented and discussed, and the outcomes of several treatments are presented. A prevalence of 1.8% for MM2 impactions was detected in our sample. Clinicians should be aware of the possible impaction of mandibular permanent second molars. Early detection and initiating of orthodontic intervention directed toward correction of the impaction are recommended for best clinical results and long-term prognosis.Open Journal of Dentistry and Oral Medicine. 01/2013; 1:9-14.
Article: THIRD MOLAR DILEMMA: AN OVERVIEW[Show abstract] [Hide abstract]
ABSTRACT: A b s t r a c t Third molars are the most com-mon teeth that may follow an abortive eruption path and become impacted as a result of pathology, anatomical structures, or insufficient osseous space pos-terior to the second molars. Common indications for removal of third molars include pericoroni-tis, caries in third or second molars, pain not attributed to infection, periodontitis, root resorption of second molars, orthodontic reasons, cysts and tumors. Some impacted third molars may be diverted to an unusual position or may damage an adjacent structure. We present in this report rare cases of aber-rantly positioned third molars as well as those associated with pathoses.DENTAL NEWS. 01/1999; 3(3):43.
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ABSTRACT: Citation: Shpack N, Finkelstein T, Lai YH, Kuftinec MM, Vardimon A, et al. (2013) Aberration in the Path of Eruption of the Mandibular Permanent Second Molar. J Interdiscipl Med Dent Sci 1: 103. doi: 10.4172/jimds.1000103 Copyright: © 2013 Shpack N, 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 Abstract Objectives: The purpose of this report is to describe aberration in the eruption path of the mandibular permanent second molars. Usually they present with an unexplainable angulation during their pre-eruptive stages, resulting in impaction. In addition, the prevalence and distribution of mandibular second molar impaction in orthodontically treated children is presented and discussed. Materials and methods: Panoramic radiographs of 3500 consecutively treated patients, age 11-15 years, were used to evaluate the eruption stage,as well as the angulation and space available for the mandibular permanent second molars. Results: A total of 62 impacted mandibular second molars were detected in 49 patients, presenting a prevalence rate of 1.4%. 36 (58%) of these were unilateral and 26 (42%) were bilateral, most of them (88%) mesially angulated. The unexpected and unpredictable change in the eruption path of four mandibular second molars, resulting in their impaction, is presented. Conclusions: Change in the path of eruption of the mandibular second molar was detected from sequential radiographic examination. The great majority of them were mesially angulated. The factors causing their angulation change that may lead to impaction are still obscure. A prevalence of 1.4% for mandibular second molar impaction was found in the large sample analyzed in our study.Interdisciplinary Medicine and Dental Science. 12/2013; 1.