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Date Published: 06/04/2026
Abstract Views: 77
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DOI: https://doi.org/10.51298/vmj.v560i2.17875
Issue
Vol. 560 No. 2 (2026)
Section
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How to Cite
Nguyễn , H. H., Hoàng , N. L., Phương, T. T., Bùi , T. L. X., & Nguyễn , T. C. (2026). ASSESSMENT OF THE ANATOMIC RELATIONSHIP BETWEEN MAXILLARY MOLAR ROOTS AND MAXILLARY SINUS FLOOR ON CBCT. Vietnam Medical Journal, 560(2). https://doi.org/10.51298/vmj.v560i2.17875

ASSESSMENT OF THE ANATOMIC RELATIONSHIP BETWEEN MAXILLARY MOLAR ROOTS AND MAXILLARY SINUS FLOOR ON CBCT

Hùng Hiệp Nguyễn , Ngọc Lan Hoàng , Thị Trang Phương, Thị Lạc Xứng Bùi , Thành Công Nguyễn

Main Article Content

Abstract

In routine dental practice, procedures in the maxillary molar region including extraction, root canal treatment, apicoectomy, and implant placement always carry potential risks of maxillary sinus complications. This cross-sectional descriptive study on 80 patients (933 roots) aimed to assess the anatomic relationship between maxillary molar roots and maxillary sinus floor on CBCT using Regnstrand classification (2021): Distant (>2mm), Close (0-2mm), and Contact (≤0mm). Results: Contact accounted for 36.0%, Close 38.4%, and Distant 25.6%. The 18-30 age group had the highest Contact rate (54.7%), decreasing in 31-45 (29.6%) and lowest in >45 (12.1%) with OR=8.79 (p<0.001). Palatal root had highest Contact rate (41.6%), followed by distobuccal (37.5%) and mesiobuccal (29.1%) (p=0.001). 76.2% of patients had at least one root in contact with the sinus. Conclusion: Younger patients have significantly higher risk of sinus complications. Pre-operative CBCT evaluation is necessary, especially in young patients.

Article Details

Keywords

Maxillary sinus, maxillary molar roots, CBCT, anatomic relationship, Regnstrand classification

References

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