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Three-dimensional evaluation of palatal bone thickness for insertion of micro implants in a Portuguese population : a retrospective cone-beam CT study
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Resumo(s)
Objective: To examine the palatal bone thickness in a cohort of Portuguese patients representing various age groups to identify optimal insertion sites for enhancing the stability of orthodontic micro implants (MIs). To ascertain whether there are any age- or sex-related variations in palatal bone thickness.
Design: Retrospective observational study.
Method: A total of 50 cone-beam computed tomography (CBCT) scans of patients aged 12–51 years (23 boys/men and 27 girls/women) were analysed. The CBCT scans were grouped according to age and sex. The palatal bone thickness was measured at five points: 4, 8, 12, 16 and 20 mm posterior to the incisive foramen (IF) and at 3, 6 and 9 mm lateral to the midpalatal suture (MPS). A total of 750 regions of interest were evaluated (15 for each of 50 patients). Two-way analysis of variance (ANOVA) and Student’s t-tests were employed for data analysis, with a significance level of P < 0.05.
Results: The greatest thickness of palatal bone was found to be at 4 mm posterior to the ІF and 9 mm lateral to the MPS in all investigated groups, with a mean thickness of 12.29 ± 2.00 mm for girls/women and 13.59 ± 2.31 mm for boys/men; 13.30 ± 2.38 mm for adolescents and young adults, and 12.27 ± 2.03 mm for adults. Significant statistical differences were identified between male and female individuals and between different age groups (ANOVA, P < 0.05).
Conclusion: Palatal bone thickness varied with sex and age; thus, these factors must be considered when selecting the appropriate length of MIs. In general, girls/women had a thinner palatal bone than boys/men. The palatal bone was significantly thicker in the adolescent and young adult age group (12–25 years) than in the adult age group (27–51 years). In addition, bone thickness decreased posteriorly within each sagittal section.
Descrição
Palavras-chave
cone-beam computed tomography palate orthodontic micro implant palatal bone thickness
Contexto Educativo
Citação
Ananieva A, Bugaighis I, Mascarenhas P, Furão S, Pereira PM. Three-dimensional evaluation of palatal bone thickness for insertion of micro implants in a Portuguese population: a retrospective cone-beam CT study. Journal of Orthodontics. 2025;52(4):355-369. doi:10.1177/14653125251389975
Editora
Sage