Abstract

CLINICAL EVALUATION OF CROWN-TO-IMPLANT RATIO ON PERIIMPLANT MARGINAL BONE LOSS IN THE POSTERIOR REGION- A 1 YEAR STUDY

*Dr. Vasu Sharma

ABSTRACT

Aim: The aim of this clinical study was to determine the influence of the crown-to-implant ratio on crestal bone loss for dental implant restorations. Material and Methods: Clinical and radiographic assessments were performed at baseline and 12 months later for restored dental implants. In order to determine the peri-implant crestal bone loss, we used a standardized periapical technique. Results: 100 implants were evaluated on a total of 32 patients. Single and splinted crowns were included in the study. The total number of implants was divided into five groups according to their crown-to-implant ratio: 0 to 0.99, 1 to 1.19, 1.2 to 1.39, 1.4 to 1.59, and ≥ 1.6. The mean of the crestal bone loss of these groups was 0.22mm, 0.16mm, 0.36mm, 0.19mm and 0.52mm respectively. The difference among these groups was statistically significant (p 0.05). The mean of the crestal bone loss for the total of evaluated implants was 0.19mm after 12 months; and the mean of the crown-to-implant ratio was 1.56. Conclusion: The crown-to-implant ratio influences the peri-implant crestal bone loss during a follow-up period of 12 months; these results suggested that a higher crown-to-implant ratio increases the crestal bone loss.

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