Zucchelli 2014b.

Methods	RCT, parallel design, 2 treatment groups, 12 months' duration
Participants	50 individuals, 28 females, age > 18 years, with 1 Miller Class I or II gingival recession of at least 3 mm at the buccal aspect of lower incisors
Interventions	1. SCTG + CAF ‐ with removal of the labial submucosal tissue 2. SCTG + CAF ‐ without removal of the labial submucosal tissue
Outcomes	ACC*(1) GRC*(1) CALC KTC*(2) SCRC PCRC MRC (Manual probe and calliper)
Notes	University/hospital‐based
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated randomisation table
Allocation concealment (selection bias)	Low risk	Sealed envelopes
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Information not reported
Blinding of outcome assessment (detection bias) All outcomes	Low risk	All measurements were performed by 1 examiner not aware of the type of surgical procedure
Incomplete outcome data (attrition bias) All outcomes	Low risk	All patients completed the follow‐up period
Selective reporting (reporting bias)	Low risk	Evidence of selective reporting of outcomes was not detected
Other bias	Low risk	Evidence of other bias was not detected