Immediately provisionalized tapered conical connection implants for single-tooth restorations
in the maxillary esthetic zone: a 5-year prospective single-cohort multicenter analysis
Objectives This open, single-cohort, multicenter, prospective study investigated the
efficacy of immediately provisionalized tapered conical connection implant for single-tooth
restorations in the anterior and premolar regions of the maxilla after 5 years of
function. Materials and methods All implants were placed in healed sites and immediately
provisionalized. MBLs, soft-tissue parameters, and oral-health impact profile (OHIP)
were evaluated at implant insertion, 6, 12, 24, 36, and 60 months. Paired Wilcoxon
signed-rank tests and Kaplan-Meier survival analysis was used for statistical and
implant survival/success analyses, respectively. Results Seventy-seven patients (81
implants) completed the 5-year follow-up. The 5-year cumulative survival and success
rates were 97.8%, and the mean MBL change from implant insertion to 5 years was -
0.80 +/- 1.13 mm. Optimal papilla index scores were observed at 90.1% of sites at
5 years compared with 32.8% of sites at insertion. Pink esthetic score, modified bleeding
and plaque indices, and OHIP showed statistically significant improvement at the 5-year
follow-up. Conclusions Immediately provisionalized tapered conical connection implants
promote marginal bone stability and excellent esthetic outcomes after 5 years of function.