Suk-Arj Panapohn, Wongchuensoontorn Chanchai, Taebunpakul Patrayu
Department of Oral Surgery and Oral Medicine, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand.
Int J Implant Dent. 2019 Aug 1;5(1):27. doi: 10.1186/s40729-019-0181-7.
Osteotome sinus floor elevation (OSFE) is used to increase the bone volume at the site of the maxillary sinus through the transalveolar approach. However, there is uncertainty regarding the necessity of the use of grafting material in order to maintain the space for new bone formation.
This study aimed to evaluate new bone formation 6 months after osteotome sinus floor elevation without grafting and to evaluate the correlations between residual bone height (RBH), implant protrusion length (IPL), and endo-sinus bone gain (ESBG).
Thirty-one implants (27 patients) from area 14-17 and 24-27 were included in the study. All implants had a history of OSFE without grafting, with cone beam computed tomography (CBCT) taken prior to the surgery. The clinical examination and radiographic examination using CBCT were performed again 6 months after implantation. The RBH, new bone level, ESBG, and IPL were measured. Paired sample t test and Pearson correlation were used to analyze the data.
The average RBH before surgery was 7.14 ± 1.07 mm and 6 months after surgery was 8.95 ± 1.17 mm. There was a significant increase in new bone formation in the 6 months following surgery (p < 0.05). The average ESBG and IPL were 1.8 ± 0.79 mm and 2.02 ± 0.73 mm, respectively. There was a significant positive correlation between the IPL and ESBG (p < 0.05) while there was a negative correlation between RBH and ESBG. This study also demonstrates a decrease in the percentage of bone formation in relation to IPL as the IPL increases. The survival rate of the implant was 100%.
Significant new bone formation can be detected around the implant site 6 months after implantation using OSFE technique without grafting. There is a negative correlation between the RBH and ESBG. While IPL is correlated to ESBG and appears to be the influencing factors of bone formation changes in the maxillary sinus. The preliminary radiographic results suggest that OSFE technique without grafting in combination with optimal IPL can provide sufficient bone height for implant support with a 100% implant survival rate.
骨凿上颌窦底提升术（OSFE）用于通过经牙槽嵴入路增加上颌窦区域的骨量。然而，关于是否有必要使用植骨材料以维持新骨形成的空间仍存在不确定性。
本研究旨在评估骨凿上颌窦底提升术后6个月不植骨情况下的新骨形成情况，并评估剩余骨高度（RBH）、种植体突出长度（IPL）和窦内骨增量（ESBG）之间的相关性。
本研究纳入了来自14 - 17区和24 - 27区的31颗种植体（27例患者）。所有种植体均有骨凿上颌窦底提升术且未植骨的病史，术前均进行了锥形束计算机断层扫描（CBCT）。种植术后6个月再次进行临床检查和CBCT影像学检查。测量RBH、新骨水平、ESBG和IPL。采用配对样本t检验和Pearson相关性分析数据。
术前平均RBH为7.14±1.07mm，术后6个月为8.95±1.17mm。术后6个月新骨形成有显著增加（p < 0.05）。平均ESBG和IPL分别为1.8±0.79mm和2.02±0.73mm。IPL与ESBG之间存在显著正相关（p < 0.05），而RBH与ESBG之间存在负相关。本研究还表明，随着IPL增加，与IPL相关的骨形成百分比降低。种植体存活率为100%。
采用骨凿上颌窦底提升术不植骨，种植术后6个月可在种植体周围检测到显著的新骨形成。RBH与ESBG之间存在负相关。虽然IPL与ESBG相关，且似乎是上颌窦骨形成变化的影响因素。初步影像学结果表明，骨凿上颌窦底提升术不植骨结合最佳IPL可为种植体支持提供足够的骨高度，种植体存活率达100%。
