Osteogenesis effect of maxillary sinus floor lift in Beagle dogs

doi:10.19438/j.cjoms.2018.04.005

Abstract

Abstract: PURPOSE:To evaluate the osteogenesis effect of maxillary sinus floor lift in Beagle dogs with bone grafting and without bone grafting. METHODS: Twelve operations (bilateral and randomly chosen) were done in 6 Beagle dogs in group A and group B (implanted Bio-Oss 0.8 mL), in which the operation was performed using maxillary sinus floor lift and immediate implant(3.5 mm×8 mm) placement. Postoperative CT scans, Micro-CT and histological analysis for all animals were conducted to evaluate the osteogenesis in the maxillary sinus floor and around the implants. SAS 9.0 software package was used for statistical analysis. RESULTS: The animals' incision healed well and without any complication such as infection. The osteogenic volume and bone density in group A was significantly lower than in group B on postoperative CT and 3 months after surgery's data. Micro-CT and histological analysis demonstrated that the osteogenesis in group A only surrounded the lower part of the implants, but surrounded all of the implants in group B. There was significant difference in new bone volume of the top and middle part of the implants between group A and B, but there was no significant difference in the lower part of the implants. CONCLUSIONS: There is certain amount of new bone formation at the lower part of the implants after maxillary sinus floor lift without bone implanting. To achieve better postoperative and long-term results, it is recommended to implant appropriate bone materials during maxillary sinus floor lift.

Key words: Sinus lift, Bone implant, Osteogenesis

CLC Number:

R782.1

ZHANG Yao-sheng, ZHOU Zhi-hang, WANG Ye-xin, ZHANG Shan-yong, ZHENG Ji-si, YANG Chi, WANG Yong, ZHU Ying-chao, HUANG Hui, ZHANG Yong-ya. Osteogenesis effect of maxillary sinus floor lift in Beagle dogs[J]. China Journal of Oral and Maxillofacial Surgery, 2018, 16(4): 317-321.

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