Banca de DEFESA: JOCELIO AUGUSTO NOGUEIRA JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOCELIO AUGUSTO NOGUEIRA JUNIOR
DATE: 28/07/2025
TIME: 08:00
LOCAL: Sala virtual
TITLE:

Assessment of the correlation between midpalatal suture maturation stages and palatal thickness in cone-beam computed tomography scans

KEY WORDS:

Palate; Cone-Beam Computed Tomography; Palatal Expansion Technique

PAGES: 68
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUBÁREA: Ortodontia
SUMMARY:

Introduction: The maturation of the midpalatal suture (MPS) appears to be influenced by intrinsic individual factors, such as age and sex. However, it remains unclear whether palatal bone thickness may also play a role in the sutural maturation process. Objective: To correlate the stages of midpalatal suture maturation with palatal bone thickness using cone-beam computed tomography (CBCT). Material and methods: A total of 145 CBCT scans of the maxilla of individuals of both sexes, aged between 15 and 40 years, were analyzed. Participants were evenly distributed into five age groups: 15-20, 21-25, 26-30, 31-35, and 36-40 years. The RadiAnt DICOM Viewer® software was used to assess the MPS maturation stage and the thickness of the palatal bone. Maturation stages were classified as A, B, C, D, or E, based on axial CBCT slices of the maxilla. Palatal bone thickness was measured in the sagittal plane at 2-mm intervals, starting from the posterior border of the incisive canal up to a distance of 34 mm toward the posterior nasal spine. At each site, thickness was measured perpendicularly from the outer surface of the palatal cortical plate to the outer surface of the cortical bone of the incisive canal or the floor of the nasal cavity. The anterior region of the palate was represented by the0-10 mm segment, the middle region by 12-22 mm, and the posterior region by 24-34 mm. Intra- and inter-examiner agreement for MPS maturation assessment was assessed using the Kappa coefficient, while the reproducibility of palatalthickness measurements was analyzed using the Intraclass Correlation Coefficient (ICC). The correlation between MPS maturation stages and palatal bone thickness was assessed using Spearman’s correlation test, and the influence of the independent variables on the dependent variable was analyzed using multiple linear regression. All analyses were performed using Jamovi® or SPSS® software, adopting a significance level of 5% (p≤0.05). Results: A weak to moderate negative correlation was observed between palatal bone thickness and MPS maturation stages, particularly in the middle and posterior regions, in both sexes from 21 years of age onward. Palatal bone thickness in the middle region and chronological age were the main predictors of suture maturation, with thinner palatal boné and older age being associated with more advanced suture consolidation. Conclusion: Palatal bone thickness in the middle region may be a useful predictor of midpalatal suture maturation, especial when considered in conjunction with chronological age.

COMMITTEE MEMBERS:
Presidente - 1378325 - ARTHUR CESAR DE MEDEIROS ALVES
Interna - 2665455 - HALLISSA SIMPLICIO GOMES PEREIRA
Externo à Instituição - ALEXANDRE ANTONIO RIBEIRO