Evaluation of increase in bone height following maxillary sinus augmentation using direct and indirect technique

Abstract

Aims: Prospective study to evaluate the increase in bone height following maxillary sinus augmentation using direct and indirect techniques. Settings and Design: The sample was drawn from the patients reporting to the Department of Oral and Maxillofacial Surgery, D. A. Pandu Memorial R. V. Dental College and Hospital, Bangalore, seeking implant options for oral rehabilitation Materials and Methods: Ten patients with unfavorable post-extraction resorptive patterns and increased pneumatization of the maxillary sinus were included for the purpose of study. In all, a total of 22 implants have been placed in maxillary bone with augmented maxillary sinuses. Statistical Analysis Used: Wilcoxon signed ranks test. Results: In the direct technique group, the average increase in median bone height from pre-operative time interval to post-operative time interval was noted to be 9.5 mm and this was statistically significant (P<0.01). Similarly, the average increase in median bone height from preoperative time interval to postoperative time interval in the indirect technique group was noted to be 5.5 mm and this was statistically significant (P<0.01).Conclusions: By the findings of this study, we can safely conclude that the average increase in bone height in the direct technique group was higher (9.5 mm) than the average increase in bone height in the indirect technique group (5.5 mm).