Maxillary molar root protrusion into the maxillary sinus: a comparison of cone beam computed tomography and panoramic findings |
| |
| Institution: | 1. Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, Bangkok, Thailand;2. Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand;1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran;2. Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran;3. Student Research Committee, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran;1. Department of Radiology, Showa University School of Dentistry, Tokyo, Japan;2. Oral Radiology, Oral Diagnosis & Polyclinics, Faculty of Dentistry, University of Hong Kong, Hong Kong;1. Section of Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus C, Denmark;2. Colosseumklinikken, Copenhagen, Denmark |
| |
| Abstract: | This study aimed to examine the prevalence of molar roots protruding into the maxillary sinus and to determine the panoramic radiographic signs as correlated with cone beam computed tomography (CBCT). CBCT images of 354 roots were assessed and classified into three types, according to the relationship between the root and maxillary sinus. The prevalence of root protrusion into the maxillary sinus was calculated then the panoramic images assessed. After excluding some unidentified roots on the panoramic images, 200 were investigated for panoramic signs, including (i) projection of the root apex into the sinus cavity, (ii) interruption of the maxillary sinus floor’s cortex, (iii) absence of periodontal ligament space, (iv) darkening of the involved root region, and (v) upward curving of the sinus floor. The respective correlation between the panoramic signs and CBCT types was assessed. Forty-six percent of roots showed protrusion into the sinus with the palatal root of the first molar having the greatest prevalence (33/200 roots). The panoramic signs ‘projection of the root apex in the sinus cavity’ and ‘darkening of the involved root apical region’ both strongly indicated root protrusion into the maxillary sinus (P < 0.05). |
| |
| Keywords: | maxillary sinus maxillary molar root panoramic radiograph CBCT |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
