Keceli 2008.

Methods	RCT, parallel design, 2 treatment groups, 12 months' duration
Participants	40 individuals, 30 females, aged 18 to 60 years, with 1 Miller Class I or II buccal gingival recession of at least 3 mm. 36 individuals completed the study
Interventions	1. SCTG + platelet‐rich plasma + CAF 2. SCTG + CAF
Outcomes	GRC CALC KTC SCRC PCRC MRC (Manual probe)
Notes	University/hospital‐based and supported by The Research Foundation of Hacettepe University
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Quote: "The first patient was selected in one of the two experimental groups by coin toss, and the next patient was consecutively added to the opposite group by one of the authors"
Allocation concealment (selection bias)	High risk	Quote: "The first patient was selected in one of the two experimental groups by coin toss, and the next patient was consecutively added to the opposite group by one of the authors"
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	Data are missing in both intervention groups (4 patients discontinued the study between 6‐ to 12‐month evaluations due to moving to another city). Thus, decision to move house away from the geographical location to another is unlikely to be connected with their subsequent outcome
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