Attar Bijan Movahedian, Alaei Samaneh, Badrian Hamid, Davoudi Amin
Department of Oral and Maxillofacial Surgery, Dental Implants Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Ann Maxillofac Surg. 2016 Jul-Dec;6(2):190-194. doi: 10.4103/ams.ams_7_16.
Implant placement in the posterior region of the maxilla might be problematic due to poor regional bone quality. The aim of this study was to clinically and radiologically evaluate implants which were placed in the posterior region of the maxilla (with insufficient bone height) with osteotome sinus lift technique after 19-month follow-up.
Twenty-four patients with posterior maxillary alveolar height ranging from 5 to 8 mm were chosen for this prospective study. After breaking of the cortical bony sinus floor, sufficient bone substitute was placed, and sinus floor was elevated. In this way, a new sinus floor was created, which was designated for further implants placement. Fifty implants were placed immediately after osteotomy sinus lift technique. The mean clinical and radiological follow-up period was 19 months (with a range of 14-24 months). Success factors such as the absence of mobility, pain, infection, and the amount of crestal bone loss were determined in this study. For data analyzing, Kruskal-Wallis and Mann-Whitney tests were used.
After 19 months, results showed 96% success rate. Two out of fifty implants failed due to mobility. The mean depth of implants in sinus, mean height of residual crestal bone before surgery, and the mean rate of crestal bone loss were 3.8, 7.9, and 0.71 mm, respectively.
Osteotome sinus lift technique is a noninvasive surgical method for enhancing a desired length. Furthermore, implants insertion was successful after osteotome sinus lift technique in cases with insufficient bone height.
由于上颌后部区域骨质较差，在上颌后部植入种植体可能存在问题。本研究的目的是在临床和影像学上评估采用骨凿上颌窦提升技术在上颌后部（骨高度不足）植入的种植体，随访19个月后的情况。
本前瞻性研究选取了24例上颌后部牙槽骨高度在5至8毫米之间的患者。在凿开皮质骨的上颌窦底后，植入足够的骨替代物，并提升上颌窦底。通过这种方式，创建了一个新的上颌窦底，用于进一步植入种植体。在骨凿上颌窦提升技术后立即植入50颗种植体。临床和影像学的平均随访期为19个月（范围为14至24个月）。本研究确定了成功因素，如无松动、疼痛、感染以及牙槽嵴骨吸收量。数据分析采用Kruskal-Wallis和Mann-Whitney检验。
19个月后，成功率为96%。50颗种植体中有2颗因松动而失败。种植体在上颌窦中的平均深度、术前剩余牙槽嵴骨的平均高度以及牙槽嵴骨吸收的平均速率分别为3.8毫米、7.9毫米和0.71毫米。
骨凿上颌窦提升技术是一种增加所需长度的非侵入性手术方法。此外，在骨高度不足的情况下，骨凿上颌窦提升技术后植入种植体是成功的。
