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Published in English in Tropical Dental Journal Volume 26 - September 2003 pages 9-14
Article Open access
Authors : FJ OWOTADE, OA FATUSI, B. IBITOYE, OD OTUYEMI - Nigeria
On a déterminé les principaux traits radiographiques de la troisième molaire incluse en signalant quelques implications d'organisation. On a examiné 255 radiographies périapicales appartenant à 197 patients avec leur historique. L'âge, le sexe, le degré d'inclusion, l'inclinaison, la hauteur, l'espace mésiodistal et les pathologies associées sont répertoriés ainsi que le nombre de racines et leurs relations avec le paquet vasculo-nerveux.
L'âge moyen était 23.4 ans avec plus de dents de femmes (152, 59,6 %) que d'hommes (103, 40,4 %). La plupart des dents étaient enclavées (223, 91,4 %) avec une inclusion verticale plus visible sur 80 dents (31,4 %). Plus d'une moitié des dents (135, 52,9 %) n'avaient aucun rapport avec le paquet vasculo-nerveux alvéolaire du maxillaire inférieur. L'indicateur radiographique le plus commun de celles qui avaient un rapport était l'assombrissement de la racine des dents (55 dents, 21,6 %). La plupart des dents (54,9 %) n'avaient pas de changements pathologiques associés. Parmi celles qui avaient des changements pathologiques, on a observé la plupart de temps, des pertes osseuses périodontales et un large follicule (44 dents ou 17,3 % dans les deux cas). Les plus âgées des personnes examinées montraient de manière significative plus de perte osseuse périodontale (p = 0.001).
L'examen radiographique périapical peut révéler des informations essentielles sur le développement de traitement des dents incluses et le contrôle des dents asymptomatiques.
The objective of the study was to determine the principal dental radiographic features of impacted third molars and to highlight some management implications. 255 periapical radiographs belonging to 197 patients with the clinical records were examined. The age of the subjects, sex, and degree of impaction, inclination, depth, mesiodistal space and associated pathology were documented as well as the number of roots and their relationship to the neurovascular bundle.
The mean age was 23.4 years with more female teeth (152, 59.6%) than male (103, 40.4%). Majority were partially erupted (223, 91.4%) with vertical impaction most commonly seen in 80 teeth (31.4%). Over half of the teeth (135, 52.9%) had no obvious relationship with the inferior alveolar neuro-vascular bundle and where this existed, darkening of the root was the most common radiographic indicator (55 teeth, 21.6%). Most of the teeth (54.9%) had no obvious pathologic changes associated. In those with pathologic changes, periodontal bone loss and a wide follicle were most commonly observed (44 teeth or 17.3% in both cases.). Older subjects had significantly more periodontal bone loss (p = 0.001).
Periapical radiographic examination can reveal vital information for treatment planning of impacted teeth and the monitoring of asymptomatic teeth.
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