慢性牙周炎基础治疗后维护期疗效纵向观察及分析

目的观察慢性牙周炎患者基础治疗后维护期的疗效,并分析牙位和位点因素对牙周袋探诊深度变化的影响。方法对牙周基础治疗后进入维护期的22例慢性牙周炎患者进行9个月的纵向观察。每3个月给予口腔卫生宣教,龈上洁治、龈下刮治和根面平整。在基线(基础治疗完成后)和每次复查时记录牙周袋探诊深度、临床附着丧失和探诊出血情况。结果维护治疗期间,牙周袋探诊深度、临床附着丧失、探诊出血等临床指标均有进一步改善。牙周袋深度前牙减少(0.52±1.02)mm,后牙减少(0.37±1.26)mm,差异有统计学意义(P<0.05);邻面位点与非邻面位点相比,邻面位点的牙周袋深度减少更显著(P<0.05);6 mm及以上的位点牙周袋深度减少(1.88±2.19)mm,4~5 mm的位点牙周袋深度减少(1.12±1.32)mm,差异有统计学意义(P<0.05)。结论慢性牙周炎患者基础治疗后每3个月进行维护治疗,可使牙周临床指标进一步改善,牙位与位点因素均对牙周袋深度的变化有影响。

Longitudinal effects of maintenance therapy on chronic periodontitis

Objective To observe the longiludinal effects of maintenance therapy on chronic periodontitis, and inspect the relationship between probing depths （PD） and looth-or site-factors. Methods Twenty-two patients with chronic periodontitis were enrolled in a 9-month maintenance care program after non-surgical periodontal therapy. Oral hygiene instruetions together with supra- and sub-gingival scaling and root planing were carried out every 3 months. PD, clinical attachment level （CAL） , and bleeding on probing （BOP） were recorded at baseline and each re-examination points. Results The clinical paramelers were improved notably throughout the maintenance period. Non-molars demonstrated a grealer reduction of PD than molars. PD decreasing was more pronounced at approximal sites than non-approximal sties. Shes with PD≥6mm showed a greater PD reduction than sites with 4 -5 mm PD. Conclusion 3-month interval of maintenance therapy will improve the clinical parameters of chronic periodontitis after non-surgical treatment. Tooth- and sitefactors may influence the variation of PD.