Evaluation of the Success Rate of Anterior Narrow Diameter Single-Unit Implant (2.4 mm and 3 mm) after One Year of Loading

Nowadays, it is essential to use narrow diameter implants in reduced bone thickness. Due to controversies in previous research, the present study was conducted to evaluate the success rate of narrow diameter implants (2.4 mm and 3 mm) in a single tooth in the anterior region after one year of loading.

In this historical cohort study, groups under investigation included patients who received single-tooth implants in the anterior edentulous segment without bone graft [40 patients with implants 2.4 mm in diameter (IMTEC, USA) and 3 mm in diameter (MILO, USA), n=20]. During the follow-up period of one year, bone resorption, pain, numbness, mobility, esthetic, peri-implant radiolucency, probing depth, and gingival index were evaluated. The Fisher’s exact test and T-test were used to analyze aesthetic scores while the Mann-Whitney test and the Wilcoxon Signed Ranks Test were employed to compare gingival index values.

In this research, no discernible bone resorption, peri-implant radiolucency, pain, and numbness was found, and only in five implants, prostheses lacked esthetic, according to pink esthetic scores. The total survival rate and success rates were 100% and 98.3% respectively.

Within the limitationS of this study, narrow diameter implants replacing the anterior teeth (for proper case selection and ideal occlusion) is a successful treatment plan with a high survival and success rate.