Abstract:
Objective
To investigate the survival rate of the dental implants placed with transcrestal maxillary sinus floor lift without bone grafts and analyze the relevant influencing factors.
Methods
We retrospectively reviewed 46 cases underwent transcrestal maxillary sinus floor elevation with 62 Bicon®implants placed simultaneously without using any bone graft materials during 2009-2012.The survival rate of the implants， marginal bone loss， residual bone height， maxillary sinus lift height，follow-up period， and complications were analyzed by the Buser's criterion.
Results
The survival rate of the 62 implants was 98.39%. One implant failed 6 months after the operation due to the lack of osseointegration. The residual bone height measured before the operation was between 2.83 to 9.83 mm.After maxillary sinus augmentation， the sinus floor elevated height was 1.00-4.86 mm. The average changes of the medial and distal marginal bone level were （-0.12±0.72） and （-0.06±0.65） mm，respectively.
Conclusion
The Bicon®implants placed with transcrestal maxillary sinus augmentation without bone grafting demonstrated relatively high survival rate and the marginal bone level around the implants remained relatively stable.
Key words:
Maxillary sinus augmentation,
Without bone grafting,
Bicon?implant,
Marginal bone level
Ke Wang, Shaowei Wu, Feilong Deng, Yalin Wu, Xiumei Zhuang, Qin Liu, Yu Dong. The clinical analysis of the dental implants placed with transcrestal maxillary sinus floor lift without bone grafts[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2014, 8(03): 225-229.