研究目的
The purposes of this split-mouth pilot study were to investigate the efficacy of the Er:YAG laser use for the de-epithelialization of the palatal graft in the treatment of the multiple gingival recessions using the bilaminar procedure and also to evaluate the patient-reported esthetic outcomes after 6 months.
研究成果
Within the limits of this study, de-epithelialized CTG with Er:YAG laser has been found to be more successful both by the patient and the clinician in terms of its esthetic appearance. It can be concluded that the method of de-epithelialization with laser may be a better alternative than de-epithelialization with scalpel.
研究不足
The study was limited by its small sample size and short follow-up period. Further long-term studies with larger sample sizes are necessary to evaluate the promising outcomes of this study.
1:Experimental Design and Method Selection:
The study was designed as a split-mouth randomized clinical trial. The treatment was performed with the bilaminar technique [coronally advanced flap (CAF)+de-epithelialized free gingival graft]. De-epithelialization procedure was done with scalpel (control site) or Er:YAG laser (test site).
2:Sample Selection and Data Sources:
Five systemically healthy participants with total 28 bilateral-multiple adjacent maxillary Miller I recessions were included.
3:List of Experimental Equipment and Materials:
Er:YAG laser (Versawave, Hoya ConBio, San Francisco, CA; 40 hz, 50 mJ/pulse), under water irrigation, noncontact mode (*1 mm away from the target tissue) in sweeping motion with chisel-type laser tip (
4:2 mm_4 mm, rectangular shape). Experimental Procedures and Operational Workflow:
A flap design with a split (interdental papillae)—full (until mucogingival junction)—split thickness approach was used to treat the multiple recessions with two vertical realizing incisions.
5:Data Analysis Methods:
Statistical analysis was performed by IBM SPSS Statistics 22 software. The compliance of the parameters to the normal distribution was evaluated by Shapiro–Wilks test. Intertreatment comparisons of the parameters without normal distribution were evaluated with Mann–Whitney U, whereas Wilcoxon signed-rank test used for the intratreatment comparisons of the parameters without normal distribution.
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