Periodontal Tissue Responses to Restorations With and Without a Cervical Finish Line: A Systematic Review and...

Area of Science:

• Periodontology and Implant Dentistry
• Prosthodontics
• Dental Materials Science

Background:

• The presence or absence of a cervical finish line in dental restorations can influence surrounding periodontal and peri-implant tissues.
• Understanding these tissue responses is crucial for long-term prosthetic success and patient health.

Purpose of the Study:

• To systematically review and meta-analyze the periodontal and peri-implant tissue responses to restorative approaches with and without a cervical finish line.
• To compare these responses on both natural teeth and dental implant abutments.

Main Methods:

• Comprehensive electronic literature search across multiple databases (PubMed/MEDLINE, Embase, Cochrane Library, LILACS, Web of Science, Scopus) and gray literature.
• Inclusion of controlled clinical trials and prospective cohort studies.
• Meta-analysis comparing restorations with and without cervical finish lines on teeth and implant abutments, assessing outcomes like Gingival Index, bleeding on probing, probing depth, gingival thickness, marginal stability, and marginal bone loss.

Main Results:

• Seven articles were included in the systematic review for tooth-based restorations (2 for meta-analysis).
• Six articles were included for implant-based restorations (3 for meta-analysis).
• No statistically significant differences were found in periodontal and peri-implant indices between restorative approaches with and without cervical finish lines for both teeth and implants.

Conclusions:

• The presence or absence of a cervical finish line in dental restorations does not appear to significantly impact periodontal or peri-implant tissue health.
• This suggests flexibility in prosthetic design regarding finish lines without compromising key tissue health indicators.