The assortment of periodontal and implant-related treatments has been continuously improved over the last 50 years. Once the decision-making process has been established and the treatment procedure applied, the partial or complete resolution of the problem (eg, periodontal probing depth reduction, clinical attachment level gain, gingival recession reduction, dental hypersensitivity decrease) and a diagnosis change with no or minimal occurrence of adverse events (ie, complications, harms, technical errors, or adverse/side effects) can be expected. The clear identification of the potential types of adverse effects, complications, or even errors is important for contemporary decision-making processes, as they may be related to different local, systemic, and technical aspects. This chapter focused on four core components: (a) providing periodontal definitions for errors, complications, harms, and side effects; (b) defining the types of risk and the clinical impact of adverse effects, errors, and complications in periodontal and peri-implant therapies; (c) evaluating the influence of accidental errors versus the lack of a proper treatment planning; and (d) reporting on the importance of establishing the “net benefit ratio” between the clinical improvements promoted by the therapy and the occurrence of potential adverse events.

中文翻译：

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牙周和种植治疗的并发症和治疗失误

过去 50 年来，牙周和种植相关治疗的种类不断改进。一旦制定了决策过程并应用了治疗程序，问题就会部分或完全解决（例如，牙周探诊深度减少、临床附着水平增加、牙龈退缩减少、牙齿过敏减少），并且诊断不会发生变化。或可以预期不良事件（即并发症、伤害、技术错误或不良/副作用）的发生率最小。明确识别不良影响、并发症甚至错误的潜在类型对于当代决策过程非常重要，因为它们可能与不同的局部、系统和技术方面相关。本章重点关注四个核心组成部分：(a) 提供错误、并发症、危害和副作用的牙周定义；(b) 定义牙周和种植体周围治疗中不良反应、错误和并发症的风险类型和临床影响；(c) 评估意外错误与缺乏适当治疗计划的影响；(d) 报告确定治疗所促进的临床改善与潜在不良事件发生之间“净效益比”的重要性。