Peri-implant and esthetic outcomes of cemented and screw-retained crowns using zirconia abutments in single implant-supported restorations-A systematic review and meta-analysis

Author(s)

Dini, Caroline ^[1] ; Borges, Guilherme Almeida ^[1] ; Costa, Raphael Cavalcante ^[1] ; Magno, Marcela Barauna ^[2] ; Maia, Lucianne Cople ^[2] ; Ricardo Barao, Valentim Adelino ^[1]

Affiliation

^[1] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, UNICAMP, Av Limeira 901, BR-13414903 Piracicaba, SP - Brazil

^[2] Fed Univ Rio de Janeiro UFRJ, Dept Pediat Dent & Orthodont, Rua Rodolpho Paulo Rocco, Cidade Univ, Rio De Janeiro - Brazil

• Document type: Review article
• Source: Clinical Oral Implants Research; v. 32, n. 10 AUG 2021.
• Web of Science Citations: 0

Abstract

Objectives To evaluate the peri-implant tissue changes and esthetic outcomes of cemented and screw-retained crowns of single-tooth implants in the esthetic zone using zirconia abutments. Material and methods An electronic search was performed on nine databases. The risk-of-bias was assessed by the revised Cochrane risk-of-bias tool for randomized (RoB 2) and non-randomized (ROBINS-I) clinical trials. Marginal bone level change, soft tissue thickness, bleeding on probing, probing depth, survival rates of implants and crowns, complications, plaque and papilla indexes, and pink esthetic score data were extracted and analyzed. The certainty of evidence was accessed through the GRADE approach. Results Nine records were included and 7 were used in the meta-analyses. Screw-retained crowns presented greater marginal bone level change (MD -0.04 {[}-0.08, -0.00] p = 0.04, I-2 = 0%) compared to cemented crowns up to 1-year. At 3 and 4 years no significant differences (p > 0.05) were observed. Soft tissue thickness did not differ between groups (p > 0.05). The bleeding on probing was higher in cemented group than in screw-retained crowns at 1-year (MD 0.17 {[}0.08, 0.27] p = 0.0005, I-2 = 0%), at medium-term periods (3 and 4 years) no statistically significant differences (p > 0.05) were observed for this outcome. Probing depth, survival rates of implants and crowns, complications, and plaque index, as well as esthetic analysis using the papilla index and pink esthetic score did not differ statistically (p > 0.05) between both retention systems at short and medium-term periods. Conclusion The connection system considering zirconia abutments presented no influence on peri-implant parameters and esthetics evaluation for medium-term periods (3 and 4 years). (AU)

• FAPESP's process: 20/05231-4 - Development of a new thermosensitive hydrogel for controlled release of drugs to prevent and treat peri-implant inflammations
• Grantee: Valentim Adelino Ricardo Barão
• Support Opportunities: Regular Research Grants
• FAPESP's process: 20/05234-3 - Development of a new thermosensitive hydrogel for controlled drug release aimed at preventing and treating peri-implant inflammations
• Grantee: Caroline Dini
• Support Opportunities: Scholarships in Brazil - Doctorate