Table 2.

Evaluation questions in terms of quality analysis and risk of bias

Questions	Answers
1) Teeth Randomization
2) Blinding of the Operator 3) Control Group
4) Has the cement gap been determined and its value clearly reported? 5) Number of the Measurement Points (≥ 4) for per Specimen? 6) Was the Outcome Accurately Measured to Minimize Bias? 7) Statistical Analysis Carried Out 8) Gap Measurements by a Single Operator 9) Luting Space Parameter 10) Was the Study Conducted in an Acceptable Way?	Yes, no, unclear or not applicable