Int J Prosthodont. 2020 Sep/Oct;33(5):493-502. doi: 10.11607/ijp.5554.
To describe and analyze the restorative complications of long-span (> three units) implant-supported dental prostheses (LIDPs) in 27 private practices in the state of Victoria, Australia, during the period from January 1, 2005, to December 31, 2009.
Private dental practitioners providing implant treatment were invited to enroll in this study, which was conducted through a dental practice-based research network. Clinical records of the implant treatments, which were provided during the specified period, were accessed for data collection. LIDPs included implant-supported prostheses of fixed or removable design; namely, fixed partial dentures (IFPDs), fixed complete dentures (IFCDs), removable partial dentures (IRPDs), and complete overdentures (IODs). Descriptive statistics and generalized linear mixed modeling were used for data analysis.
The range of observation time for 627 LIDPs was 3 to 72 months (mean ± SD: 3.22 ± 1.49 years). For fixed prostheses, the complication with the highest annual rate was veneer fracture (acrylic: 21%; ceramic: 2.9%), followed by loss of retention for cement-retained IFPDs (14.7%). For mandibular IODs, the highest annual complication rate was for retention complications, whereas for maxillary IODs, it was for acrylic veneer fracture (11.5% and 6.4%, respectively). The peak incidence of complications was during the first year of function in fixed protheses and in IODs. Acrylic veneer fracture in IFCDs and IOD base fracture were more common in patients with preoperative clinician-reported attrition (estimated odds ratios [ORs] = 4.5 and 11.3, respectively; P < .05). Ceramic veneer fracture in fixed protheses and acrylic veneer fracture in IODs were reported more commonly for maxillary compared to mandibular prostheses (ORs = 5 and 22, respectively; P < .05). Mandibular IODs had more frequent retention complications when supported by two compared to four implants (OR = 5.9, P < .05).
Restorative complications were observed in all categories of LIDPs at various annual rates. Clusters of these complications occurred during the first year of prosthesis function. Patient- and prosthesis-related variables influenced the incidence rate of some of these complications.
描述并分析 2005 年 1 月 1 日至 2009 年 12 月 31 日期间澳大利亚维多利亚州 27 家私人诊所中长跨度（>三个单位）种植体支持的牙科修复体（LIDP）的修复并发症。
受邀参与此项研究的私人牙医需提供在指定期间内进行的种植体治疗的临床记录，以进行数据收集。LIDP 包括固定或可摘设计的种植体支持修复体，具体为固定局部义齿（IFPDs）、固定全口义齿（IFCDs）、可摘局部义齿（IRPDs）和全口覆盖义齿（IODs）。本研究采用描述性统计和广义线性混合模型进行数据分析。
627 件 LIDP 的观察时间范围为 3 至 72 个月（均值±标准差：3.22±1.49 年）。对于固定修复体，年发生率最高的并发症是贴面破裂（丙烯酸：21%；陶瓷：2.9%），其次是粘结固位的 IFPD 丧失（14.7%）。对于下颌 IOD，保留并发症的年发生率最高，而上颌 IOD 则为丙烯酸贴面破裂（分别为 11.5%和 6.4%）。固定修复体和 IOD 的并发症发生率峰值出现在功能的第一年。IFCDs 的丙烯酸贴面破裂和 IOD 基托破裂在术前临床医生报告的磨耗患者中更为常见（估计比值比[OR]分别为 4.5 和 11.3；P<.05）。上颌固定修复体的陶瓷贴面破裂和 IOD 的丙烯酸贴面破裂比下颌修复体更为常见（OR 分别为 5 和 22；P<.05）。与四颗种植体相比，两颗种植体支持的下颌 IOD 保留并发症更为常见（OR=5.9，P<.05）。
在各种不同的年发生率下，LIDP 的所有类别中均观察到修复并发症。这些并发症集群发生在修复体功能的第一年。患者和修复体相关的变量影响了这些并发症的一些发生率。
