evidencegaps
Primary study · included by 1 review

Kwok et al. (2022)

ProbableThe reviews cited this study without a PMID, DOI or NCT, so it is matched by first author and year. Two different studies by the same author in the same year could be merged here.

Included by

From Polyethylene Terephthalate Glycol (PETG) to 3D-Printed Resins: A Systematic Review and Meta-Analysis of Clear Aligner Material Performance and Safety.
Non-Cochrane · intervention · 2026 · cited as Kwok 2022 · Table 4; reference [8]
Outcome this study informsPooled effectEvidenceCertainty
Surface roughness change (μm)
Aged clear aligner materials vs Before aging or intraoral wear
MD 0.15 [-0.08, 0.38]2 studiesGRADE not reported

1 including review in total.