Cercadillo-Ibarguren Iñaki, Sánchez-Torres Alba, Figueiredo Rui, Valmaseda-Castellón Eduard
Int J Oral Maxillofac Implants. 2017 September/October;32(5):1116–1122. doi: 10.11607/jomi.5496. Epub 2017 Apr 12.
To describe the clinical outcomes and complications related to provisional prostheses after full-arch implant-supported rehabilitation by means of an immediate loading protocol.
This retrospective cohort study included patients who were consecutively treated with full-arch implant-supported restorations with a minimum of four implants (Replace Select Tapered TiUnite, Nobel Biocare AB) per arch and conical abutments (multi-unit, Nobel Biocare AB) by means of an immediate loading protocol. The surgical procedures were performed between May 2006 and June 2014 by a single oral surgeon. Demographic, surgical, and prosthetic variables were collected, and biologic and mechanical complications were registered.
A total of 61 maxillae (57%) and 46 mandibles (43%) were treated in 88 patients (40 men and 48 women) with a mean age of 62.4 years. A total of 558 implants were placed, 295 in postextraction sockets. A total of 331 implants (59.3%) were placed in the maxilla and 227 (40.7%) in the mandible. Within a 9-month period, 18 prostheses (16.8%) fractured (15 maxillary and 3 mandibular); in nine of these patients the opposing dentition was a full-arch, implant-supported restoration, and in the remaining nine patients, it was natural dentition. Six (1.1%) maxillary and three (0.5%) mandibular implants failed.
A high implant survival rate is expected in the short term following this immediate loading protocol. Fracture of the provisional prosthesis is a common finding, affecting 17% of patients, and is significantly more prevalent in patients with bruxism and in maxillary prostheses.
描述通过即刻负重方案进行全牙弓种植体支持修复后临时修复体相关的临床结果及并发症。
这项回顾性队列研究纳入了通过即刻负重方案接受全牙弓种植体支持修复治疗的患者，每侧牙弓至少植入4枚种植体（Replace Select Tapered TiUnite，诺贝尔生物公司）并使用锥形基台（多单位，诺贝尔生物公司）。手术操作由一名口腔外科医生在2006年5月至2014年6月期间完成。收集人口统计学、手术及修复变量，并记录生物学和机械并发症。
88例患者（40例男性和48例女性）接受了治疗，平均年龄62.4岁，共治疗61例上颌骨（57%）和46例下颌骨（43%）。共植入558枚种植体，其中295枚植入拔牙后牙槽窝。共331枚种植体（59.3%）植入上颌骨，227枚（40.7%）植入下颌骨。在9个月内，18个修复体（16.8%）发生骨折（15个上颌修复体和3个下颌修复体）；其中9例患者的对颌牙列是全牙弓种植体支持修复体，其余9例患者的对颌牙列是天然牙列。6枚（1.1%）上颌种植体和3枚（0.5%）下颌种植体失败。
采用该即刻负重方案后短期内种植体存活率较高。临时修复体骨折很常见，影响17%的患者，在磨牙症患者和上颌修复体中更为普遍。
