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Evaluation of dimensional behavior of peri-implant tissues in implants immediately exposed or submerged in fresh extraction and healed sites: a histological study in dogs.


ABSTRACT: BACKGROUND:The aim of this study was to compare histologically the dimensional behavior of peri-implant tissues during osseointegration of immediately exposed or submerged implant placement in fresh extraction and healed sites. METHODS:Four fresh extraction and four delayed implant sites were placed in each hemimandible of five dogs at the bone crest level. In 2 implants of each side were installed a healing abutment (exposed) and two cover screw (submerged) and formed four groups: implant installed in fresh extraction submerged (group 1), implants in fresh extraction immediately exposed (group 2), implants installed in healed site submerged (group 3), and implants in healed site immediately exposed (group 4). After 12 weeks of healing period, histomorphometric analyses of the specimens were carried out to measure the crestal bone level values and the tissue thickness in the implant shoulder portion. RESULTS:The measure of crestal bone level showed some higher values for implants installed in fresh extraction sites in the buccal aspect: 1.88?±?0.42 mm for group 1 and 2.33?±?0.33 mm for group 2, with statistical significance among all four groups tested (P?

SUBMITTER: Gehrke SA 

PROVIDER: S-EPMC6890886 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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Evaluation of dimensional behavior of peri-implant tissues in implants immediately exposed or submerged in fresh extraction and healed sites: a histological study in dogs.

Gehrke Sergio Alexandre SA   Bragança Leana Kathleen LK   Velasco-Ortega Eugenio E   Calvo-Guirado José Luis JL  

International journal of implant dentistry 20180212 1


<h4>Background</h4>The aim of this study was to compare histologically the dimensional behavior of peri-implant tissues during osseointegration of immediately exposed or submerged implant placement in fresh extraction and healed sites.<h4>Methods</h4>Four fresh extraction and four delayed implant sites were placed in each hemimandible of five dogs at the bone crest level. In 2 implants of each side were installed a healing abutment (exposed) and two cover screw (submerged) and formed four groups  ...[more]

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