Osteotomy in lateral sinus augmentation: A comparative study of rotary technique and Lateral Approach Sinus Kit(®)

BACKGROUND: Various sinus lift techniques have been tried to minimize the rate of perforations, especially in Type I and Type II sinus membrane thickness. AIMS AND OBJECTIVES: The aim and objectives of this study was to present our own experience compare and the efficacy of conventional direct sinus lift technique and direct sinus lift using LAS Kit. MATERIAL AND METHODS: Our study included 14 patients in which seven patients in conventional technique and seven patients in Lateral Approach Sinus (LAS) Kit(®). RESULT: The results showed that the sinus membrane perforation rate, using LAS Kit(®) with specially designed drills, is less than that of the conventional technique, especially in Type I and II sinus membrane with the added benefit of reduced operative time. The mean operative time in conventional technique was 28.29 ± 2.21min and in LAS Kit(®), it was 19.43 ± 2.88min which was statistically significantly less than the conventional technique group (P < 0.001). In both the groups, 100% implant integrity was achieved (measured using reverse torque technique) after 6 months of follow-up. It was observed that there was no statistically significant difference between the groups in pain, swelling, flap dehiscence, and infection at different time intervals. CONCLUSION: We conclude that the use of LAS Kit(®) for sinus lift procedure in atrophied maxilla with Type I and II sinus membrane is a much safer approach over the conventional technique. Further, the results obtained also showed that blood coagulum gave better gain in bone height over a period of 6 months.