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Evaluation of available height, location, and patency of the ostium for sinus augmentation from an implant treatment planning perspective

  • Vaddi, Anusha (Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, University of Connecticut School of Dental Medicine) ;
  • Villagran, Sofia (Division of General Dentistry, University of Connecticut School of Dental Medicine) ;
  • Muttanahally, Kavya Shankar (Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, University of Connecticut School of Dental Medicine) ;
  • Tadinada, Aditya (Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, University of Connecticut School of Dental Medicine)
  • Received : 2020.08.17
  • Accepted : 2021.03.13
  • Published : 2021.09.30

Abstract

Purpose: The objective of this study was to evaluate the amount of height available for a maxillary sinus augmentation procedure without blocking the ostium and jeopardizing the drainage of the ostiomeatal complex using cone-beam computed tomography (CBCT) imaging. Materials and Methods: A total of 200 sinonasal complexes comprising 100 dentate and 100 edentulous scans were retrospectively assessed using CBCT. Invivo 5.0, a CBCT reconstruction program, was used for image evaluation. The coronal section demonstrating the ostiomeatal complex was selected as a reference view to perform measurements of the sinus. The measurements were done by 2 evaluators in separate sessions. Comparative analyses of measurements were performed between dentate and edentulous patients and between male and female patients. Results: The safe height to which the sinus can be elevated without compromising the integrity of the ostiomeatal complex was calculated for each sinus. In the presence of significant mucosal thickening, the height available for augmentation was calculated by subtracting the height of mucosal thickening from the sinus floor to the location of the ostium. In this study, the available height was approximately 27.05 mm for dentate and 23.40 mm for edentulous patients. The inter-operator reliability was excellent for all the parameters evaluated. Conclusion: This retrospective study with a limited number of patients from a single university-based site shows that CBCT is valuable in evaluating the location and patency of the ostium for planning sinus augmentation procedures for dental implant placement.

Keywords

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