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First molar radicular bone near the maxillary sinus: a comparison of CBCT analysis and gross anatomic dissection for
1Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California, USA. robert.howe@ucsf.edu
Objectives:
This study assessed agreement of cone-beam computerized tomography (CBCT) measurements against those obtained by gross dissection and physical calipers for dimensions of maxillary bone around first molar roots in cadaveric specimens.
Study Design:
A total of 37 human maxilla pairs with 69 first molars were analyzed by CBCT with a resolution of 200 microm and the results compared with gross dissection. Matched data sets of 414 data points (6 data points per tooth) were compared using Bland-Altman statistics. An operational definition of clinical accuracy was proposed.
Results:
The data sets displayed a Pearson correlation coefficient of r = 0.85. Analysis revealed a positive bias for CBCT of 0.4 mm with a standard deviation of 1.1 mm relative to gross dissection. Less bone around first molar roots was demonstrated than reported in available literature.
Conclusions:
High-resolution CBCT measurements were acceptable for clinical accuracy and study of the maxillary sinus.
