Show simple item record

AuthorHaider, Ohood
AuthorSharaf, Mufeed Ahmed
AuthorAbdulqader, Abbas Ahmed
AuthorAlhashimi, Najah
AuthorSharhan, Hasan M.
AuthorChen, Chen
AuthorAlsoufi, Waleed
AuthorTing, Zeng Yun
AuthorWei, Xiao Li
AuthorAlhammadi, Maged S.
Available date2023-11-19T05:45:36Z
Publication Date2023
Publication NameClinical Oral Investigations
ResourceScopus
ISSN14326981
URIhttp://dx.doi.org/10.1007/s00784-023-05047-6
URIhttp://hdl.handle.net/10576/49448
AbstractObjective The purpose of this study was to three-dimensionally evaluate the relationship between the degree of bilateral impacted mandibular third molar (IM3M) angulation and the mandibular dental arch parameters in normal skeletal and dental malocclusion patients. Materials and methods In this retrospective cross-sectional comparative study, 120 adult subjects’ cone-beam computed tomography (CBCT) images were three-dimensionally analyzed. The sample included 120 adults aged 20–30 years, with a gender distribution of 51 male and 69 female participants. The sample was divided into 100 adults with bilateral IM3M (study group) and 20 adults with normal bilateral erupted M3M (control group). The study group was sub-divided into three groups according to the degree of IM3M buccolingual angulation (BL°): group A, < 12° on the center of the ridge (N = 30), group B, 12–24° off-center of the ridge (N = 40), group C, > 24° off-center of the ridge (N = 30). The study group was also sub-divided into two groups according to IM3M mesiodistal angulation (MD°): group 1 from 10 to 45° (N = 36), group 2 > 45° (N = 64). Comparison within and between groups was performed using one-way ANOVA followed by Tukey’s post hoc test. The correlation between IM3M, BL, and MD angulation and the mandibular arch parameter was calculated using Pearson’s correlation coefficient. Results Statistically significant differences (P < 0.001) were found between the IM3M BL° and anterior teeth inclination, arch length (AL), and inter-second molar width (inter 2nd MW) as well as between the IM3M MD° with anterior crowding and the arch length (P < 0.001). A significant positive correlation was found between IM3M BL° and anterior teeth inclination and between IM3M MD° and anterior teeth crowding and inter 2nd MW. A significant negative correlation was observed between IM3M BL° and inter 1st MW and 2nd MW. Conclusion The degree of buccolingual and mesiodistal angulation of the impacted mandibular third molars was related with mandibular dentoalveolar changes. Increased buccolingual angulation is generally associated with increased anterior teeth inclination and decreased 1st and 2nd inter-molar width. The increase in mesiodistal angulations was generally related with increased anterior teeth crowding and 2nd inter-molar width. Clinical relevance Assessment of the relationship between the impacted mandibular third molars and the degree of arch discrepancy, and the position of mandibular incisors in the three planes of space might help in the decision-making process for the extraction of the impacted third molars in adult patients.
SponsorThe authors would like to thank Prof. Feng Yun Zhi, Prof. Shen gao Huang, and Dr. Bushra Sufyan Almaqrami for their consultations and assistance in accomplishing this study.
Languageen
PublisherSpringer Science and Business Media Deutschland GmbH
SubjectBuccolingual
Dental arch parameters
Impacted mandibular third molars
Mesiodistal
Relationship
Three-dimensional
TitleThree-dimensional relationship between the degree of bilateral impacted mandibular third molars angulation and the mandibular dental arch parameters: a cross-sectional comparative study
TypeArticle
Pagination4301-4311
Issue Number8
Volume Number27
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record