Study of the correlation of the top of the mandibular teeth to the bottom of the maxillary sinus according to CBCT data
https://doi.org/10.36377/ET-0176
Abstract
INTRODUCTION. The article presents the results of a study of the ratios of apex roots of premolars and molars of the upper jaw to the bottom of the maxillary sinus based on the analysis of 288 cone-beam computed tomograms (CBCT).
MATERIALS AND METHODS. The sample included patients older than 25 years, divided into five age groups, adjusted for gender. Measurements were made in the sagittal and axial planes with an accuracy of 0.1 mm, using Romexis Viewer software and statistical analysis in SPSS (ANOVA, Pearson correlation analysis).
RESULTS. Key findings: Distances from apex to sinus floor decrease with age (r = –0.45 to –0.72, p < 0.01), with lower values in females and variability up to 50% in older groups. Minimum distances (up to –0.95 mm) are observed in the 65+ year group, indicating a risk of perforation in 15-30% of patients. ANOVA revealed significant differences between groups and sexes (F = 4.12–6.78, p < 0.05), with a tendency for apexes of premolars and molars to approach the bottom. The clinical significance of the results obtained lies in the reduction of the risks of complications (sinusitis, perforation) during dental interventions due to the preventive use of CBCT.
CONCLUSIONS. The data contribute to personalized treatment planning, particularly in older patients and women.
About the Authors
I. A. Gatilo
Stavropol State Medical University
Russian Federation
Competing Interests:
Russian Federation
Irina A. Gatilo – Cand. Sci. (Med.), Associate Professor, Head of the Department of Hygiene
310 Mira Str., Stavropol 355017, Russian Federation
Competing Interests:
The authors declare no conflict of interest.
S. V. Sirak
Stavropol State Medical University
Russian Federation
Competing Interests:
Russian Federation
Sergey V. Sirak – Dr. Sci. (Med.), Professor, Head of Department of Dentistry
310 Mira Str., Stavropol 355017, Russian Federation
Competing Interests:
The authors declare no conflict of interest.
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Review
For citations:
Gatilo I.A., Sirak S.V. Study of the correlation of the top of the mandibular teeth to the bottom of the maxillary sinus according to CBCT data. Endodontics Today. 2026;24(1):196-203. https://doi.org/10.36377/ET-0176
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