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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停止牙周支持治疗对牙周状况的影响——一项回顾性研究


目的 评估主动牙周治疗 (APT) 和支持性牙周治疗 (SPT) 对部分和完全顺应及脱落患者探诊深度 (PD) 变化和每年牙齿脱落的影响。 材料和方法 280 例部分和完全牙周治疗的数据记录了 55 名符合要求的患者（定期支持性就诊，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）。从患者档案中获取 PD 数据以及 APT 开始时 (T1​​) 和 SPT 开始时 (T2) 存在的牙齿数量，并在最终检查时 (T3) 进行评估。 结果 SPT 期间的年度牙齿脱落量为退出患者显着高于部分依从性和完全依从性患者（分别为 0.31 ± 0.50 和 0.19 ± 0.55）（p < 0.001）。在部分和完全依从和退出患者中，平均 PD（所有可用部位数据）在 T1（3.61 ± 0.82 与 3.70 ± 0.73 mm）和 T2（2.68 ± 0.40 与 2.76 ± 0.42 mm）之间显着下降，而到 T3 时，该值再次略有增加（2.74 ± 0.41 与 2.99 ± 0.75 mm）。 结论 在部分和完全顺应的患者中，SPT 对 PD 稳定性和中期牙齿保存具有积极影响。与预期相反，退出患者的 PD 并未恢复至基线值，尽管未达到 PD 稳定性。