Andreasi Bassi M, Andrisani C, Lico S, Ormanier Z, Arcuri C
Private Practice in Rome, Rome, Italy.
Private Practice in Matera, Matera, Italy.
Oral Implantol (Rome). 2016 Nov 13;9(2):61-68. doi: 10.11138/orl/2016.9.2.061. eCollection 2016 Apr-Jun.
In the present paper the use of tapered-screw bone expanders (TSBEs) is proposed, in combination with the placement of tilted implants, in close proximity to the anterior sinus wall, solving the problem of the reduced height of the alveolar bone in the sub-antral area. The Authors present a case series of full-arch rehabilitations performed with this procedure named: Tilted Implant Expansion Osteotomy (TIEO).
12 patients (5 males and 7 females, average age 58.5 ± 8.1 years) with totally or partially edentulous maxilla were enrolled in this study. For each patient 4 implants were placed, the anterior implants in the area of lateral incisors or canines while, the posterior implants, immediately in front of the maxillary sinus, with an inclined position. Adopting the aforesaid procedure, 48 cylindrical two-piece implants were placed, 24 of which were placed in tilted position, in order to by-pass the maxillary sinus. After a healing period of 6 months, the second stage surgery was performed. The cases were finalized by means of a hybrid metal-acrylic prosthesis. The post finalization follow-up was at 12 months.
Survival rate was 100% since none fixtures were lost. At the one-year follow up the clinical and radiological appearance of the soft and hard tissues was optimal and no pathological signs were recorded.
TIEO is a promising surgical procedure for full-arch rehabilitation of maxillary edentulous sites and represents a therapeutic alternative to sinus lift techniques.
在本文中，作者提出使用锥形螺纹骨扩张器（TSBEs），并结合倾斜种植体的植入，使其紧邻上颌窦前壁，以解决窦下区域牙槽骨高度降低的问题。作者展示了一系列采用这种名为倾斜种植体扩张截骨术（TIEO）的方法进行全牙弓修复的病例。
本研究纳入了12例上颌完全或部分无牙的患者（5例男性，7例女性，平均年龄58.5±8.1岁）。为每位患者植入4枚种植体，前牙区种植体位于侧切牙或尖牙区域，而后牙区种植体紧邻上颌窦前壁并呈倾斜位。采用上述方法，共植入48枚两段式圆柱形种植体，其中24枚为倾斜植入，以避开上颌窦。经过6个月的愈合期后，进行二期手术。病例最终通过金属-丙烯酸混合假体完成修复。最终修复后的随访时间为12个月。
由于没有种植体丢失，种植体存活率为100%。在一年随访时，软硬组织的临床和影像学表现均最佳，未记录到病理征象。
TIEO是一种用于上颌无牙区全牙弓修复的有前景的手术方法，是上颌窦提升技术的一种治疗替代方案。
