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PHOSPHATED, ACID-ETCHED IMPLANTS DECREASE MINERAL APPOSITION RATES NEAR IMPLANTS IN CANINES

Identifieur interne : 002D43 ( Ncbi/Curation ); précédent : 002D42; suivant : 002D44

PHOSPHATED, ACID-ETCHED IMPLANTS DECREASE MINERAL APPOSITION RATES NEAR IMPLANTS IN CANINES

Auteurs : Christine Hyon Foley ; David G. Kerns ; William W. Hallmon ; Francisco Rivera-Hidalgo ; Carl J. Nelson ; Robert Spears ; Paul C. Dechow ; Lynne A. Opperman

Source :

RBID : PMC:2946350

Abstract

Purpose:

This study evaluated the effects of phosphate-coated titanium on mineral apposition rate (MAR) and new bone-to-implant contact (BIC) in canines.

Materials and Methods:

2.2 mm × 4 mm electrolytically phosphated or non-phosphated titanium implants with acid-etched surfaces were placed in 48 mandibular sites in 6 foxhounds. Tetracycline and calcein dyes were administered 1 week after implant placement and 1 week before sacrifice. At twelve weeks following implant healing, animals were sacrificed. MAR and BIC were evaluated using fluorescence microscopy. Light microscopic and histological evaluation was performed on undecalcified sections.

Results:

Microscopic evaluation showed the presence of healthy osteoblasts lining bone surfaces near implants. Similar bone-to-implant contact was observed in phosphated and non-phosphated titanium implant sites. MAR was significantly higher near non-phosphated titanium implant surfaces than the phosphated titanium samples. No significant differences were found between dogs or implant sites.

Discussion and Conclusion:

Acid-etched only implants showed significantly higher mineral apposition rates compared to acid-etched, phosphate-coated implants.


Url:
PubMed: 20369085
PubMed Central: 2946350

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PMC:2946350

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Christine Hyon Foley
<affiliation>
<nlm:aff id="A1">Department of Periodontics, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
David G. Kerns
<affiliation>
<nlm:aff id="A2">Department of Periodontics, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
William W. Hallmon
<affiliation>
<nlm:aff id="A3">Department of Periodontics, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
Francisco Rivera-Hidalgo
<affiliation>
<nlm:aff id="A4">Department of Periodontics, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
Carl J. Nelson
<affiliation>
<nlm:aff id="A5">Lynntech, Inc., College Station, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
Robert Spears
<affiliation>
<nlm:aff id="A6">Department of Biomedical Sciences, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
Paul C. Dechow
<affiliation>
<nlm:aff id="A7">Department of Biomedical Sciences, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>
Lynne A. Opperman
<affiliation>
<nlm:aff id="A8">Department of Biomedical Sciences, and Director of Technology Development, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX.</nlm:aff>
<wicri:noCountry code="subfield">TX.</wicri:noCountry>
</affiliation>

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<title>Purpose:</title>
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</sec>
<sec id="S2">
<title>Materials and Methods:</title>
<p id="P3">2.2 mm × 4 mm electrolytically phosphated or non-phosphated titanium implants with acid-etched surfaces were placed in 48 mandibular sites in 6 foxhounds. Tetracycline and calcein dyes were administered 1 week after implant placement and 1 week before sacrifice. At twelve weeks following implant healing, animals were sacrificed. MAR and BIC were evaluated using fluorescence microscopy. Light microscopic and histological evaluation was performed on undecalcified sections.</p>
</sec>
<sec id="S3">
<title>Results:</title>
<p id="P4">Microscopic evaluation showed the presence of healthy osteoblasts lining bone surfaces near implants. Similar bone-to-implant contact was observed in phosphated and non-phosphated titanium implant sites. MAR was significantly higher near non-phosphated titanium implant surfaces than the phosphated titanium samples. No significant differences were found between dogs or implant sites.</p>
</sec>
<sec id="S4">
<title>Discussion and Conclusion:</title>
<p id="P5">Acid-etched only implants showed significantly higher mineral apposition rates compared to acid-etched, phosphate-coated implants.</p>
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