Martina Schriber1, Michael M Bornstein2, Valerie G A Suter3. 1. Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland. 2. Oral and Maxillofacial Radiology, Applied Oral Sciences, Faculty of Dentistry, Prince Philip Dental Hospital, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Hong Kong, SAR, China. 3. Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland. valerie.suter@zmk.unibe.ch.
Abstract
OBJECTIVES: To compare the dimensions of maxillary sinuses in dentate and edentulous patients using cone beam computed tomography (CBCT) scans and a customised software program. MATERIALS AND METHODS: This study comprised CBCTs of 50 dentate and 50 edentulous posterior maxillae. The observers drew two planar curves in all included sinuses in the frontal, sagittal and axial planes of the respective CBCT scans. The volume (mm3), surface (mm2) and maximum diameter (mm) of the sinuses were calculated using a custom-made software program. The variables analysed were the influence of the state of dentition on sinus dimensions (primary outcome) and the influence of age, gender and side on sinus dimensions; the time needed for analysis; and the intra- and inter-observer agreement (secondary outcomes). RESULTS: There was no difference in sinus dimensions between dentate and edentulous posterior maxillae. Males had significantly (p < 0.05) greater volume, surface and diameter than females. Strong intra- and inter-observer agreement (Pearson correlation) was found for the calculated sinus dimensions. The time needed per analysis was less than 4 min for both observers. CONCLUSIONS: Being edentulous did not have an impact on the sinus dimensions, suggesting that there is no ongoing pneumatisation in the sinus after tooth loss. Males had larger sinuses than females in a population older than 30 years. CLINICAL RELEVANCE: Following tooth loss in the posterior maxilla, vertical bone height is primarily lost due to resorption of the alveolar crest, and not due to pneumatisation of the maxillary sinus. The customised software program was found to be user-friendly and efficient.
OBJECTIVES: To compare the dimensions of maxillary sinuses in dentate and edentulous patients using cone beam computed tomography (CBCT) scans and a customised software program. MATERIALS AND METHODS: This study comprised CBCTs of 50 dentate and 50 edentulous posterior maxillae. The observers drew two planar curves in all included sinuses in the frontal, sagittal and axial planes of the respective CBCT scans. The volume (mm3), surface (mm2) and maximum diameter (mm) of the sinuses were calculated using a custom-made software program. The variables analysed were the influence of the state of dentition on sinus dimensions (primary outcome) and the influence of age, gender and side on sinus dimensions; the time needed for analysis; and the intra- and inter-observer agreement (secondary outcomes). RESULTS: There was no difference in sinus dimensions between dentate and edentulous posterior maxillae. Males had significantly (p < 0.05) greater volume, surface and diameter than females. Strong intra- and inter-observer agreement (Pearson correlation) was found for the calculated sinus dimensions. The time needed per analysis was less than 4 min for both observers. CONCLUSIONS: Being edentulous did not have an impact on the sinus dimensions, suggesting that there is no ongoing pneumatisation in the sinus after tooth loss. Males had larger sinuses than females in a population older than 30 years. CLINICAL RELEVANCE: Following tooth loss in the posterior maxilla, vertical bone height is primarily lost due to resorption of the alveolar crest, and not due to pneumatisation of the maxillary sinus. The customised software program was found to be user-friendly and efficient.
Authors: Mario Pérez Sayáns; Juan A Suárez Quintanilla; Cintia M Chamorro Petronacci; José M Suárez Peñaranda; Pía López Jornet; Francisco Gómez García; Yolanda Guerrero Sánchez Journal: PLoS One Date: 2020-06-18 Impact factor: 3.240
Authors: Ali Robaian; Nasser Raqe Alqhtani; Ziyad Ibrahim Alghomlas; Adel Alzahrani; Abdulrahman Khalid Almalki; Ali Al Rafedah; Abdullatif Al Abdulsalam; Khaled M Alzahrani Journal: Saudi Dent J Date: 2021-08-04