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Hybrid and fully-etched surface implants in periodontally healthy patients: A comparative retrospective study on marginal bone loss.

Abstract：

BACKGROUND:Human studies on implants with the same design but with different surfaces are lacking at the present time. PURPOSE:The aim of this study was to compare the survival rate of and marginal bone loss (MBL) around 2 types of implants with the same design, but with different surfaces: fully "sandblasted and double-etched" (SDE) implants and hybrid (H) implants, with an apical SDE-surface and a coronal machined-surface. MATERIALS AND METHODS:The SDE- and H-surfaces were previously analyzed under SEM and profilometer. Implants were placed in partially edentulous periodontally healthy patients requiring single implant-restoration, in either mandible or maxilla, with cement-retained prosthetic restoration. Twelve months after prosthetic loading, MBL in relation to prosthetic abutment height (AH), calculated radiographically, was statistically analyzed. RESULTS:SEM and profilometer analyses revealed no differences between the SDE-surfaces of either SDE- or H-implants. Transverse ridges and grooves characterized the machined portion of H-implants, clearly influencing the profilometer analysis. In 75 patients, 37 SDE and 38 H-implants were placed and all functioned completely after 12 months. In both SDE- and H-groups, MBL had a significant inverse relationship with AH, with greater intercept and negative slope for SDE-group and intersection of the 2 regression lines at AH = 2 mm. CONCLUSIONS:A 100% survival rate was recorded for SDE- and H-implants placed in pristine bone of periodontally healthy patients; MBL was limited and similar in both SDE- and H-groups; the higher the prosthetic AH, the lesser the MBL around implants; H-implants could reduce bone loss most effectively with abutments lower than 2 mm, realistically exploitable on thin biotypes; SDE-implants could reduce bone loss most effectively with abutments greater than 2 mm, realistically exploitable on thick biotypes.

journal_name

Clin Implant Dent Relat Res

journal_title

Clinical implant dentistry and related research

authors

Spinato S,Bernardello F,Sassatelli P,Zaffe D

doi

10.1111/cid.12504

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

663-670

issue

4

eissn

1523-0899

issn

1708-8208

journal_volume

19

pub_type

杂志文章

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