Is third molar development affected by third molar impaction or impaction-related parameters?
Dental age estimation
Forensic odontology
Impaction
Third molar
Tooth development
Journal
Clinical oral investigations
ISSN: 1436-3771
Titre abrégé: Clin Oral Investig
Pays: Germany
ID NLM: 9707115
Informations de publication
Date de publication:
Dec 2021
Dec 2021
Historique:
received:
10
11
2020
accepted:
19
04
2021
pubmed:
3
5
2021
medline:
23
11
2021
entrez:
2
5
2021
Statut:
ppublish
Résumé
To evaluate the effect of third molar impaction and impaction-related parameters on third molar development. Panoramic radiographs (N=3972) from 473 males and 558 females between 3.2 and 23.5 years old were analysed. Three parameters of impaction were examined: hindering contact between third and adjacent second molar, retromolar space availability (only in lower third molars), and angulation between the third and adjacent second molar. From the separate parameters, a definition for impaction was derived. Third molars' development was staged according to a modified Köhler et al. staging technique. A linear model was used to compare within-stage and overall age, as a function of hindering contact, retromolar space, and impaction. Furthermore, a quadratic function was used to study the correlation between age and angulation. Significant differences were found in mean age as a function of hindering contact and retromolar space, depending on third molar location and stage. There was a significant relation between angulation and age, depending on the stage, with all third molars evolving to a more upright position (closer to 0°). Mean ages of subjects with impacted third molars were significantly lower in certain third molar stages, but the differences were clinically small (absolute differences ≤0.65 years). Moreover, after correction for stage differences, no significant differences in age could be demonstrated. The development of impacted and non-impacted third molars can be considered clinically equal in our study population. There is no distinction required between impacted and non-impacted third molars for dental age estimation.
Identifiants
pubmed: 33934201
doi: 10.1007/s00784-021-03955-z
pii: 10.1007/s00784-021-03955-z
doi:
Types de publication
Journal Article
Langues
eng
Pagination
6681-6693Subventions
Organisme : Indonesia Endowment Fund for Education (LPDP)
ID : PRJ-1137 /LPDP.3/2017
Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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