Post‐treatment change in the form of true relapse and physiological and maturational effects is common following orthodontics. The unpredictable nature of these manifestations dictates a conservative, near‐universal approach to retention. Both fixed and removable forms of retention are popular with the latter constrained by variable levels of adherence particularly in the medium‐ to long‐term. Fixed retention may offer a more predictable means of preservation of orthodontic outcomes; however, this advantage is offset by the requirement for prolonged supervision and the potential for adverse changes including periodontal breakdown. Nevertheless, while examples of severe complications are common, a clear causal relationship between intact, passive retainers and periodontal issues does not appear to exist. Nevertheless, the importance of diligent maintenance and careful supervision during fixed retention, in particular, cannot be disregarded.

中文翻译：

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正畸固位：基本原理和牙周影响


正畸后，以真实复发以及生理和成熟效应形式出现的治疗后变化很常见。这些表现的不可预测性决定了采取保守的、近乎普遍的保留方法。固定和可移动的固位形式都很受欢迎，后者受到不同程度的依从性的限制，特别是在中长期内。固定固位可以提供一种更可预测的保持正畸结果的方法；然而，这一优势被长期监督的要求和可能发生的不利变化（包括牙周破坏）所抵消。然而，虽然严重并发症的例子很常见，但完整的被动保持器和牙周问题之间似乎并不存在明确的因果关系。然而，特别是在固定保留期间，勤奋维护和仔细监督的重要性不容忽视。