Effectiveness of Different Modalities of Lip Repositioning Surgery for Management of Patients Complaining of Excessive Gingival Display: A Systematic Review and Meta-Analysis Publisher Pubmed



Younespour S¹ ; Yaghobee S² ; Aslroosta H² ; Moslemi N² ; Pourheydar E³ ; Ghafary ES^{2, 4} Show Affiliations
Source: BioMed Research International Published:2021

Abstract

Purpose. This study is aimed at synthesizing the available evidence regarding effectiveness of various modalities (combinations of LRS tasks) and comparison between each two modalities in terms of gingival display reduction, success rate, stability of the results, patient's satisfaction, and postoperative morbidity. Materials and Methods. The electronic databases including PubMed, Scopus, Web of Science Cochrane Library, Google Scholar databases, ClinicalTrials.gov, and WHO International Clinical Trial Registry Platform were searched up to 27th June 2020 regarding lip repositioning surgery. The modalities were defined as the combinations of the following tasks: frenectomy (yes/no), flap thickness (full/partial), and myotomy (yes/no). Meta-analyses were performed on gingival display change from baseline to months 3, 6, and 12 in each modalities using Stata (v.16). Results. 38 studies (including three clinical trials, two quasiexperimental studies, seven case series, and 26 case reports) met the criteria for final inclusion. The mean gingival display reduced from baseline to 6 months (WMD=-2.90, 95% CI: -4.85 to -0.95) in the patients undergoing the frenectomy + full-thickness flap + myotomymodality. This parameter decreased from baseline to 6 and 12 months, respectively (WMD=-2.68, 95% CI: -3.49 to -1.86; WMD=-2.52, 95% CI: -4.40 to -0.64), in patients undergoing the frenectomy + partial-thickness flap + without myotomymodality. In patients who undergone the without frenectomy + partial-thickness flap + without myotomymodality, gingival display reduced from baseline to 6 months (WMD=-3.22, 95% CI: -5.61 to -0.84). Almost 83% of patients with modality 1 had satisfaction. Conclusions. Gingival display within the 6 months after LRS could be reduced with all modalities. Descriptively, the greatest reduction was observed in patients with the modality not including the frenulum. © 2021 Shima Younespour et al.