Cork University Dental School and Hospital, University College Cork, Cork, Ireland.
Faculty of Dentistry, National University of Singapore, Singapore.
Clin Oral Implants Res. 2017 Oct;28(10):1258-1262. doi: 10.1111/clr.12951. Epub 2016 Aug 8.
Hypodontia compromises appearance and function and is challenging to manage clinically.
To assess the impact of implant retained crowns on quality of life of patients and to determine clinical performance of implant retained crowns in these patients.
In a 24-month prospective observation study, patients with non-syndromic mild hypodontia manifested with missing teeth in the anterior maxilla were included. Pre-treatment screening included a clinical and radiographic examination and completion of an OHIP-20. Narrow neck SLActive TiZr implants (Roxolid , Straumann AG, Switzerland) were provided and restored with single unit crowns. Implant stability was recorded at time of placement and abutment connection. Standardized radiographs were recorded at time of surgery, abutment connection and 12- and 24-month follow-up visits, and distance between implant shoulder and first bone contact was measured. Oral health-related quality of life was calculated using OHIP-20 scores at 12- and 24-month visits compared with pre-treatment scores. Pink (PES) and white (WES) aesthetic scores were used to objectively assess aesthetic outcome of treatment.
Twenty implants were placed in 12 patients (seven females, five males; mean [SD] age 19.33 [2.37] years). There was a significant improvement in oral health-related quality of life following treatment (P = 0.026), and the effect size of this change was 1.17 indicating a large clinically meaningful change. Mean PES and WES scores were high, indicated a satisfactory aesthetic outcome at 24 months. Crestal bone-level changes were considered small.
Favourable clinical outcomes were observed. Implant retained crowns had a large and clinically meaningful impact on quality of life of patients with hypodontia.
缺牙症影响美观和功能，临床治疗具有挑战性。
评估种植体支持的牙冠对患者生活质量的影响，并确定这些患者中种植体支持的牙冠的临床性能。
在一项为期 24 个月的前瞻性观察研究中，纳入了表现为上颌前牙缺失的非综合征性轻度缺牙症患者。治疗前筛查包括临床和影像学检查以及完成 OHIP-20。提供窄颈 SLActive TiZr 种植体（Roxolid，Straumann AG，瑞士）并修复为单单位牙冠。在放置和基台连接时记录种植体稳定性。在手术、基台连接以及 12 个月和 24 个月随访时记录标准化 X 光片，并测量种植体肩与第一骨接触点之间的距离。与治疗前评分相比，在 12 个月和 24 个月随访时使用 OHIP-20 评分计算口腔健康相关生活质量。使用粉色（PES）和白色（WES）美学评分客观评估治疗的美学效果。
12 名患者（7 名女性，5 名男性；平均[标准差]年龄 19.33[2.37]岁）中放置了 20 个种植体。治疗后口腔健康相关生活质量显著改善（P=0.026），这种变化的效应大小为 1.17，表明具有较大的临床意义变化。平均 PES 和 WES 评分较高，表明 24 个月时美学效果满意。颊侧骨水平变化被认为较小。
观察到良好的临床结果。种植体支持的牙冠对缺牙症患者的生活质量有很大且具有临床意义的影响。
