The purpose of this review was to evaluate the periodontal and peri-implant tissue responses to restorative

approaches with and without cervical finish line on teeth and dental implants. An electronic search

was performed in PubMed/MEDLINE, Embase, Cochrane Library, LILACS, Web of Science, and Scopus

databases, and in the gray literature. Controlled clinical trials and prospective cohort studies were

included. Analyzed outcomes included gingival index (GI), bleeding on probing (BOP), probing depth

(PD), gingival thickness (GT), marginal stability (MS), and marginal bone loss (MBL). A meta-analysis

was then performed in two parts: the first compared results of restorations on teeth with and without

cervical finish line, and the second compared results of restorations on implant abutments with and

without cervical finish line. Regarding the tooth-based restoration analysis, 7 out of 1,388 selected articles

were included in the systematic review, and 2 were selected for the meta-analysis. For implantbased

restorations on abutments with and without cervical finish line, 6 out of 707 selected articles

were included in the systematic review, and 2 in the meta-analysis. No significant differences in periodontal

and peri implant indexes were identified between both prosthetic approaches in situations with

and without cervical finish lines.