Abstract
Objective: This study evaluated the peri-implant clinical parameters of zirconia versus metallic abutments for standardized custom-made implantsupported single-tooth restorations. Material and Methods: Sixteen subjects received 30 dental implants on esthetic region of upper jaws. Test group had 14 implant-supported single-tooth restorations with ceramic abutment and control group had 16 restorations with metallic abutment. Peri-implant clinical parameters were recorded after 110 ± 10 days in function at six sites by each implant, in each subject. The means of clinical measures: probing depth (PD) and clinical attachment level (CAL); mean of percentages of sites with visible plaque (VP), bleeding on probing (BOP) and suppuration (SU) were recorded to each subject. To verify differences between groups Mann Whitney U-test was selected PD and CAL and k-light test VP, BOP and SU. Results: One zirconia implant-supported single-tooth restoration fractured at insertion time. The mean of PD, CAL, and BOP of the samples sites were lower to test group than control (p < 0.05). There were no differences of mean levels of VP and S between test and control group (p > 0.05). Conclusion: Clinical parameters around implant-supported restorations were influenced by abutment type with better results to zirconia abutments, at least, after short time period evaluation.
Highlights
The facial esthetics and proper phonetic function have direct influence on social and psychological human behavior
These restorations are influenced by some clinical factors such as smile line design, biotype and color of peri-implant mucosa and must be analyzed before surgical treatment to achieve optimal esthetics results [3,4]
Stable marginal bone levels and healthy mucosal conditions documented at zirconia abutments [25], to the our findings indicates favorable soft and hard tissue reaction
Summary
The facial esthetics and proper phonetic function have direct influence on social and psychological human behavior. The implant-supported restorations have been used as an alternative solution with high success rates [2] These restorations are influenced by some clinical factors such as smile line design, biotype and color of peri-implant mucosa and must be analyzed before surgical treatment to achieve optimal esthetics results [3,4]. There are limited controlled, randomized clinical studies comparing peri-implants clinical parameters of zirconia and metallic abutments for implantsupported single-tooth restorations [10,23]. The objective of this prospective, longitudinal and controlled study was to evaluate peri-implant clinical parameters of zirconia versus metallic abutments for standardized custommade implant-supported single-tooth restorations in esthetic maxillary region
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