Aoki Naofumi, Maeda Michinori, Kurata Masashi, Hirose Marina, Ojima Yasutaka, Wada Keinoshin, Shibuya Yasuyuki
DDS, PhD Assistant Professor, Department of Oral Maxillofacial Surgery, Nagoya City University, Graduate School of Medical Sciences, Nagoya, Japan.
DDS, Resident, Department of Oral Maxillofacial Surgery, Nagoya City University, Graduate School of Medical Sciences, Nagoya, Japan.
J Clin Exp Dent. 2018 Oct 1;10(10):e984-e991. doi: 10.4317/jced.55113. eCollection 2018 Oct.
Several sinus floor elevation procedures for implant placement have been introduced. The present study aimed to evaluate the implants placed with Platelet-rich fibrin (PRF) alone in atrophic posterior maxillae and survival rates and the potential factors associated with implant loss.
This retrospective study evaluated 71 implants in 34 patients after 1-7 years' follow-up time. Statistical models were used to determine the implant survival and the potential factors associated with loss.
Overall, 7 implants were lost, and the cumulative survival rate at 7 years by implant-based and patient-bases analyses were 85.5% and 85.7%, respectively. The mean residual bone height (RBH) was 4.26 mm. The implant survival rate was significantly lower at RBH < 4 mm than RBH ≥ 4 mm.
This retrospective study showed that sinus floor elevation with PRF alone could be applied in cases of lower RBH. However, it should be carefully performed in cases of RBH < 4 mm before surgery. Platelet-rich fibrin, dental implant, sinus augmentation, retrospective study.
已经引入了几种用于种植体植入的上颌窦底提升术。本研究旨在评估仅使用富血小板纤维蛋白（PRF）在上颌后牙区萎缩骨中植入的种植体及其生存率，以及与种植体丢失相关的潜在因素。
这项回顾性研究对34例患者的71颗种植体进行了1至7年的随访评估。使用统计模型来确定种植体的生存率以及与种植体丢失相关的潜在因素。
总体而言，有7颗种植体丢失，基于种植体和基于患者的分析在7年时的累积生存率分别为85.5%和85.7%。平均剩余骨高度（RBH）为4.26毫米。RBH < 4毫米时的种植体生存率显著低于RBH≥4毫米时。
这项回顾性研究表明，仅使用PRF进行上颌窦底提升术可应用于RBH较低的病例。然而，术前RBH < 4毫米的病例应谨慎操作。富血小板纤维蛋白、牙种植体、上颌窦增高术、回顾性研究。
