AimTo assess the impact of active (APT) and supportive periodontal therapy (SPT) on the change in probing depth (PD) and annual tooth loss in partially and fully compliant and drop‐out patients.Material and MethodsData of 280 periodontally treated partially and fully compliant (regular supportive visits, SPT duration 5.5 ± 4.5 years) and 55 drop‐out patients (SPT and drop‐out duration 8.3 ± 3.8 years, only drop‐out duration 5.3 ± 3.7 years) were recorded. PD data and the number of teeth present at the start of APT (T1) and at the start of SPT (T2) were taken from the patient files and evaluated at the time of the final examination (T3).ResultsAnnual tooth loss during SPT was significantly higher (p < 0.001) in drop‐out patients than in partially and fully compliant patients (0.31 ± 0.50 vs. 0.19 ± 0.55, respectively). In partially and fully compliant and drop‐out patients, the mean PD (all available site data) decreased significantly between T1 (3.61 ± 0.82 vs. 3.70 ± 0.73 mm) and T2 (2.68 ± 0.40 vs. 2.76 ± 0.42 mm), while the values increased again slightly up to T3 (2.74 ± 0.41 vs. 2.99 ± 0.75 mm).ConclusionsIn partially and fully compliant patients, SPT had a positive impact on PD stability and medium‐term tooth preservation. In contrary to expectations, drop‐out patients, PD did not return to baseline values, although PD stability was not achieved.

中文翻译：

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停止支持性牙周治疗对牙周状况的影响——一项回顾性研究


目的评估主动 （APT） 和支持性牙周治疗 （SPT） 对部分和完全顺应性和脱落患者探诊深度 （PD） 变化和年牙齿脱落的影响。材料和方法记录了 280 名接受牙周治疗的部分和完全依从性 （定期支持性访视，SPT 持续时间 5.5 ± 4.5 年） 和 55 名退出患者 （SPT 和退出持续时间 8.3 ± 3.8 年，仅退出持续时间 5.3 ± 3.7 年）的数据。PD 数据和 APT 开始时 （T1） 和 SPT 开始时 （T2） 的牙齿数量取自患者档案，并在最终检查 （T3） 时进行评估。结果辍学患者 SPT 期间的年牙齿脱落率 （p < 0.001） 显著高于部分和完全顺应性患者 （分别为 0.31 ± 0.50 vs. 0.19 ± 0.55）。在部分和完全依从和退出的患者中，平均 PD（所有可用的部位数据）在 T1 （3.61 ± 0.82 vs. 3.70 ± 0.73 mm） 和 T2 （2.68 ± 0.40 vs. 2.76 ± 0.42 mm） 之间显着降低，而该值再次略微增加至 T3 （2.74 ± 0.41 vs. 2.99 ± 0.75 mm）。结论在部分和完全顺应性患者中，SPT 对 PD 稳定性和中期牙齿保留有积极影响。与预期相反，退出患者 PD 没有恢复到基线值，尽管没有达到 PD 稳定性。