Retrospective Study of the Effect of Different Gingival Phenotypes on Clinical Efficacy of Periodontal Tissue Regenera-tion Surgery
Objective:To evaluate the effect of gingival phenotype on clinical efficacy after periodontal tissue regen-eration surgery by analyzing relevant clinical indexes.Methods:Thirty patients who need periodontal tissue regener-ation 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 kera-tinized 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 sta-tistically 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 of △CAL,△GRD,and △KTW 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 with △GRD,and positively correlated with △KTW and △CAL.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.