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The influence of estrogen deficiency on bone around osseointegrated dental implants. An experimental study in the rat jaw model

Identifieur interne : 003F57 ( Main/Exploration ); précédent : 003F56; suivant : 003F58

The influence of estrogen deficiency on bone around osseointegrated dental implants. An experimental study in the rat jaw model

Auteurs : Gabriela Giro ; Paulo G. Coelho ; Roberto Sales Pessoa ; Rosa Maria Rodrigues Pereira ; Toshihisa Kawai ; Silvana Regina Perez Orrico

Source :

Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons [ 0278-2391 ] ; 2011.

RBID : PMC:3118974

Abstract

Purpose

The aim of this study was to evaluate the influence of estrogen deficiency on bone around osseointegrated dental implants in a rat jaw model.

Materials and Methods

This study utilized 16 female rats, which had the first molars bilaterally extracted and allowed to heal for 30 days prior to implant placement. Sixty days after implant placement, the animals were randomly submitted to sham surgery (SHAM) or ovariectomy (OVX). The animals were euthanized 90 days post-ovariectomy. Bone to implant contact, bone area fraction occupancy between implant threads, mineral density, turnover markers and TRAP positive cells were assessed for both groups.

Results

The results showed that OVX group presented a decrease of systemic bone density, alterations on bone turnover markers, and an increase of TRAP positive cells relative to the SHAM group. However no difference relative to the bone to implant contact and bone area fraction occupancy was observed between groups.

Conclusions

The findings of this study demonstrate that estrogen deficiency may not be considered as a risk factor for osseointegrated implants failure in jaw bone.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3118974

DOI: 10.1016/j.joms.2011.01.028
PubMed: 21530046
PubMed Central: 3118974

Affiliations:

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<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Purpose</title>
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<sec sec-type="materials|methods" id="S2"><title>Materials and Methods</title>
<p id="P2">This study utilized 16 female rats, which had the first molars bilaterally extracted and allowed to heal for 30 days prior to implant placement. Sixty days after implant placement, the animals were randomly submitted to sham surgery (SHAM) or ovariectomy (OVX). The animals were euthanized 90 days post-ovariectomy. Bone to implant contact, bone area fraction occupancy between implant threads, mineral density, turnover markers and TRAP positive cells were assessed for both groups.</p>
</sec>
<sec id="S3"><title>Results</title>
<p id="P3">The results showed that OVX group presented a decrease of systemic bone density, alterations on bone turnover markers, and an increase of TRAP positive cells relative to the SHAM group. However no difference relative to the bone to implant contact and bone area fraction occupancy was observed between groups.</p>
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The influence of estrogen deficiency on bone around osseointegrated dental implants. An experimental study in the rat jaw model

The influence of estrogen deficiency on bone around osseointegrated dental implants. An experimental study in the rat jaw model

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Abstract

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