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Volume 19 , Issue 4
July/August 2004

Pages 597602

Crestal Bone Resorption 5 Years After Implant Loading: Clinical and Radiologic Results with a 2-stage Implant System

Giano Ricci, MD, MScD/Mario Aimetti, DDS/Walter Stablum, DDS/Alessandro Guasti, DDS

PMID: 15346759

Purpose: The aim of the present study was to assess crestal bone resorption 5 years after loading by conducting a clinical and radiographic evaluation of 112 Frialit-2 implants consecutively placed in 51 patients from January 1994 through June 1994. Materials and Methods: All implants were placed in the same private-practice clinic by the same surgeon. Clinical assessment included plaque score monitoring, bleeding on probing, probing depth, type of occlusion, and prosthetic adaptation. Intraoral radiographs were taken and compared using suitable software to accurately measure peri-implant bone resorption. Results: The survival rate of the implants was 100%. Plaque was present on 47 (42%) implants. Bleeding on probing was detectable at 17 implants (15.5%). Probing depth was  5 mm for 5 implants (4.5%). Crestal bone resorption was  3 mm for 32 implants (28.6%); the average observed crestal bone resorption was 2.17 1.6 mm. Discussion: The survival rate of the implants may be the result of the relatively short functional period as well as the strict and frequent clinical evaluations associated with oral hygiene procedures during the supportive periodontal therapy. Conclusion: The results suggest that with strict plaque control, and provided that the patient follows a regular program of supportive therapy, crestal bone resorption around a 2-stage implant system may be limited. INT J ORAL MAXILLOFAC IMPLANTS 2004;19:597602

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