不同牙龈表型影响牙周组织再生术临床疗效的回顾性研究

Retrospective Study of the Effect of Different Gingival Phenotypes on Clinical Efficacy of Periodontal Tissue Regenera-tion Surgery

目的:评价牙龈表型对牙周组织再生术后临床疗效的影响。方法:选取需行牙周组织再生术的患者30例,患牙共40颗,薄龈型与厚龈型患牙各20颗。术前及术后6个月记录患牙的探诊深度(probing depth, PD)、牙龈退缩深度(gingival recession depth, GRD)、临床附着丧失(clinical attachment loss, CAL)以及角化龈宽度(keratinized tissue width, KTW)并进行对比分析。结果:厚龈型组患牙术后6个月的PD、CAL、KTW与术前相比差异均有统计学意义(P<0.05),薄龈型组患牙术后6个月的PD、GRD、CAL与术前相比差异均有统计学意义(P<0.05);组间比较两组术前与术后6个月临床指标变化量中ΔCAL、ΔGRD、ΔKTW差异均具有统计学意义(P<0.05);相关性分析表明牙龈厚度(gingiva thickness, GT)与ΔGRD呈负相关,与ΔKTW和ΔCAL呈正相关。结论:牙龈表型是影响牙周组织再生术临床疗效的重要因素,厚龈型患者术后CAL的改善、KTW的增量及GRD的预后优于薄龈型患者。

Objective:To evaluate the effect of gingival phenotype on clinical efficacy after periodontal tissue regeneration surgery by analyzing relevant clinical indexes.Methods:Thirty patients who need periodontal tissue regeneration surgery were selected,with a total of 40 affected teeth,including 20 thin gingival type and 20 thick gingival type each.The probing depth(PD),gingival recession depth(GRD),clinical attachment loss(CAL),and keratinized tissue width(KTW)of the affected teeth were recorded and compared before and 6 months after surgery.Results:In the thick gingival type group,there were statistically significant differences in the PD,CAL,and KTW at 6 months after surgery in contrast to before surgery(P<0.05).In the thin gingival type group,there were statistically significant differences in the PD,GRD,and CAL at 6 months after surgery in contrast to before surgery(P<0.05).There was statistically significant difference in the changes ofΔCAL,ΔGRD,andΔKTW before and 6 months after surgery between thin gingival type and thick gingival type groups(P<0.05).Correlation analysis showed that gingiva thickness(GT)was negatively correlated withΔGRD,and positively correlated withΔKTW andΔCAL.Conclusion:Gingival phenotype is an important factor affecting the clinical efficacy of periodontal tissue regeneration surgery.The improvement of CAL,the increase of KTW,and the prognosis of GRD in patients with thick gingival type were better than those with thin gingival type.