Evaluation of Marginal Bone Level around Platform-Switched Implants

Abstract

Purpose: The long-term success of an implant depends on the stability of bone support for the implant. Most crestal bone loss occurs in the first year of implant placement. Platform-switching is an approach which can be clinically applied to preserve the crestal bone. The concept of 'platform switching' refers to the use of a smaller-diameter abutment on a larger-diameter implant collar. The purpose of the present study was to evaluate crestal bone level around platform-switched implants. Materials and methods:Twenty implants with 5 mm diameter were placed in mandibular molar region. All implants had been placed at the crestal level at the time of surgery. Radiographs with grid were obtained 3, 6 and 12 months after loading and were evaluated by screen caliper software measuring the location of the crestal bone level relative to the implant platform. Results:The implants showed a mean bone loss of 0.76 ± 0.1265 mm on mesial side and 0.72 ± 0.1481 mm on distal side after 1 year. Conclusion:The findings of the current trial indicated that the use platform-switched implants lead to better preservation of crestal bone.

Influence of placement depth and abutment connection pattern on bone remodeling around 1‐stage implants: a prospective randomized controlled clinical trial

“…The mean bone loss reported by studies also using platformswitched implants ranged from 0.30 to 0.95 mm; values consistent with the findings of the present study. In contrast, a significantly greater bone loss, reaching 2.1 mm, has been recorded for platform-matched implants (Vela-Nebot et al 2006;Cappiello et al 2008;Canullo et al 2009;Cocchetto et al 2010;Gultekin et al 2013;Calvo-Guirado et al 2014). Recent systematic reviews and meta-analyses have demonstrated the more favorable effect of the platform-switching design in reducing marginal bone resorption.…”

Marginal bone loss around platform-switched and non-platform switched implants after two years of placement: a clinical trial

“…In addition, Kapoor et al 13 observed that bone loss value in platform-switched implants was not significantly different between the mesial and distal sides of crestal bone. In another study, no significant differences were observed between the two types of platform-switched implants (Nobel Active and Nobel Replace Groovy).…”

“…Many of the previous studies have been undertaken 3‒12 month after surgery 13-15 , and the investigation of implants 24 months after implant placement is scarce. Therefore, the aim of the present study was to assess the amount of bone loss around the platform-switched and non-platform-switched implants 24 months after placement of implants.…”