Predictability of a dental implant prognosis system: A retrospective study

IF 4.5 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of periodontology Pub Date : 2026-08-24 Epub Date: 2026-03-06 DOI:10.1002/jper.70110

Kristen Young, Michelle Tong, Yu-Ting Yeh, Richard T. Kao, Guo-Hao Lin

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引用次数: 0

Abstract

Background

This study aimed to evaluate the predictability of the dental implant prognosis system proposed by Kwok et al. in 2023 by assessing implant survival rates across different initial prognosis categories over a 5-year period.

Methods

Data were retrospectively collected from patients who received at least one dental implant from 2013–2022 at a single university-affiliated dental center. Eligible participants received baseline examinations at the time of implant-supported prosthesis delivery, with follow-up examinations at least 12 months after. Implants were categorized into favorable, questionable, unfavorable, and hopeless, based upon the prognosis categories proposed by Kwok et al. in 2023. Recorded measurements included: age, sex, follow-up duration, initial and latest implant prognoses, supportive care, history of grade C periodontitis, smoking, diabetes, and the use of intravenous bone sparing agents. Descriptive analysis was employed for data interpretation.

Results

This study included 651 implants placed in 291 patients. Implants initially classified as having a favorable prognosis exhibited excellent long-term survivability, while those deemed unfavorable at baseline showed the greatest likelihood of deteriorating to a hopeless prognosis. At the latest follow-up, survival rates for implants initially categorized as favorable, questionable, and unfavorable were 100%, 93.5%, and 33.3%, respectively. Cox regression analysis identified initial prognosis, uncontrolled diabetes, and a history of grade C periodontitis as statistically significant risk factors for implant failure, with hazard ratios of 9.70, 35.14, and 66.48, respectively.

Conclusions

The dental implant prognosis system proposed by Kwok et al. is a reliable tool in assessing implant survivability within 5 years. Future research should investigate its long-term performance and the relationship between various influencing factors and implant prognosis.

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牙种植体预后系统的可预测性：一项回顾性研究。

本研究旨在评估Kwok等人在2023年提出的牙种植体预后系统的可预测性，通过评估5年期间不同初始预后类别的种植体存活率。方法回顾性收集2013-2022年在同一所大学附属牙科中心至少接受过一次种植牙的患者的数据。符合条件的参与者在种植体支持的假体交付时接受基线检查，并在至少12个月后进行随访检查。根据Kwok等人在2023年提出的预后分类，将种植体分为有利、可疑、不利和无望。记录的测量包括：年龄、性别、随访时间、最初和最近种植体预后、支持治疗、C级牙周炎史、吸烟史、糖尿病史和静脉注射保骨剂的使用情况。采用描述性分析对数据进行解释。结果本研究共纳入291例患者651颗种植体。最初被分类为预后良好的植入物表现出良好的长期生存能力，而那些在基线时被认为不良的植入物则显示出最大的可能恶化到无望的预后。在最近的随访中，最初被分类为有利、可疑和不利的植入物的存活率分别为100%、93.5%和33.3%。Cox回归分析发现，初始预后、未控制的糖尿病和C级牙周炎病史是种植体失败的有统计学意义的危险因素，风险比分别为9.70、35.14和66.48。结论Kwok等人提出的种植体预后系统是评估种植体5年内生存能力的可靠工具。今后的研究应进一步探讨其长期性能及各种影响因素与种植体预后的关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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