Morphometric Analysis of Relationship Between the Maxillary Sinus Floor and Roots of the Maxillary Posterior Teeth with the Help of Cone Beam Computed Tomography”

Abstract

Aim: To access the vertical and horizontal relationship between the MSF and maxillary posterior teeth roots using CBCT.

Material and Methods:

In this randomized controlled trial study, a total 40 CBCT scans & 160 teeth including forty 1st premolars, forty 2nd premolars, forty 1st Molars & forty 2nd Molars was analysed, using in-built measurement tools. To access the relationship between the MSF and the posterior maxillary teeth, the classification implemented in the study of Jung in 2009 was used. All data underwent descriptive statistical analysis and was tabulated. 

Result: The study showed that the buccal root tip of the second premolar was closest to the maxillary sinus floor (MSF), followed by the palatal root tip of the same tooth, the disto-buccal (DB) root tip of the second molar, and the palatal root tip of the first molar with a greater prevalence of thicker buccal cortical plates observed in the maxillary premolar region.  The study found statistically significant differences in the relationship between various types and gender, with a higher prevalence of teeth root protrusion into the maxillary sinus noted in males compared to females. However, no statistically significant difference was observed between assessments of the right and left sides.

Conclusion: The study found that while most teeth did not contact the sinus floor, the likelihood of root protrusion into the maxillary sinus increased with more posterior maxillary teeth and was more common in males than females.

Clinical significance: Understanding the anatomical relationship between posterior teeth and the maxillary sinus helps clinicians enhance preoperative planning and reduce potential complications.