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Influence of Surface Modifications of Acrylic Resin Teeth on Shear Bond Strength with Denture Base Resin-An Invitro Study

Identifieur interne : 001042 ( Main/Exploration ); précédent : 001041; suivant : 001043

Influence of Surface Modifications of Acrylic Resin Teeth on Shear Bond Strength with Denture Base Resin-An Invitro Study

Auteurs : Vallabh Mahadevan ; Madhusudan Krishnan ; Chitra Shankar Krishnan ; N. S. Azhagarasan ; Jayakrishnakumar Sampathkumar ; Hariharan Ramasubramanian

Source :

Journal of Clinical and Diagnostic Research : JCDR [ 2249-782X ] ; 2015.

RBID : PMC:4606334

Abstract

Background

Debonding of artificial teeth from the denture base is an important issue for edentulous patients rehabilitated with conventional or implant supported complete dentures.

Aim

The purpose of this study was to evaluate shear bond strength between denture base resin and acrylic resin denture teeth subjected to three different surface modifications on the ridge lap area as compared to unmodified denture teeth.

Materials and Methods

Forty acrylic resin central incisor denture teeth were selected and randomly divided into four test groups. The teeth in each group were subjected to one of the three different surface modifications, namely, chemical treatment, sandblasting and placement of retentive grooves on the ridge lap area respectively, prior to packing of the denture base resin. The group with unmodified teeth served as control. Forty acrylic resin test blocks thus obtained were tested for shear bond strength between acrylic resin teeth and denture base resin in Universal Testing Machine. Data obtained was statistically analysed using one-way ANOVA and Student- Newman- Keul’s test (p< 0.05).

Results

Analysis of shear bond strength revealed that retentive grooves on the ridge lap area showed highest bond strength values followed by sandblasting and both were statistically significant compared to the control and chemically treated groups. Unmodified surface of the resin teeth showed the least bond strength.

Conclusion

Within the limitations of this invitro study the placement of retentive grooves or sandblasting of the ridge lap area showed highly significant improvement in shear bond strength compared to the unmodified surface. Chemical treatment did not result in any significant improvement in the shear bond strength compared to the unmodified surface.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4606334

DOI: 10.7860/JCDR/2015/13877.6445
PubMed: 26501005
PubMed Central: 4606334

Affiliations:

Le document en format XML

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<author><name sortKey="Mahadevan, Vallabh" sort="Mahadevan, Vallabh" uniqKey="Mahadevan V" first="Vallabh" last="Mahadevan">Vallabh Mahadevan</name>
<affiliation><nlm:aff id="aff1"> Reader, Department of Prosthodontics & Implantology,<institution>Ragas Dental College & Hospital</institution>
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<front><div type="abstract" xml:lang="en"><sec><title>Background</title>
<p>Debonding of artificial teeth from the denture base is an important issue for edentulous patients rehabilitated with conventional or implant supported complete dentures.</p>
</sec>
<sec><title>Aim</title>
<p>The purpose of this study was to evaluate shear bond strength between denture base resin and acrylic resin denture teeth subjected to three different surface modifications on the ridge lap area as compared to unmodified denture teeth.</p>
</sec>
<sec><title>Materials and Methods</title>
<p>Forty acrylic resin central incisor denture teeth were selected and randomly divided into four test groups. The teeth in each group were subjected to one of the three different surface modifications, namely, chemical treatment, sandblasting and placement of retentive grooves on the ridge lap area respectively, prior to packing of the denture base resin. The group with unmodified teeth served as control. Forty acrylic resin test blocks thus obtained were tested for shear bond strength between acrylic resin teeth and denture base resin in Universal Testing Machine. Data obtained was statistically analysed using one-way ANOVA and Student- Newman- Keul’s test (p< 0.05).</p>
</sec>
<sec><title>Results</title>
<p>Analysis of shear bond strength revealed that retentive grooves on the ridge lap area showed highest bond strength values followed by sandblasting and both were statistically significant compared to the control and chemically treated groups. Unmodified surface of the resin teeth showed the least bond strength.</p>
</sec>
<sec><title>Conclusion</title>
<p>Within the limitations of this invitro study the placement of retentive grooves or sandblasting of the ridge lap area showed highly significant improvement in shear bond strength compared to the unmodified surface. Chemical treatment did not result in any significant improvement in the shear bond strength compared to the unmodified surface.</p>
</sec>
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</front>
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<name sortKey="Krishnan, Madhusudan" sort="Krishnan, Madhusudan" uniqKey="Krishnan M" first="Madhusudan" last="Krishnan">Madhusudan Krishnan</name>
<name sortKey="Mahadevan, Vallabh" sort="Mahadevan, Vallabh" uniqKey="Mahadevan V" first="Vallabh" last="Mahadevan">Vallabh Mahadevan</name>
<name sortKey="Ramasubramanian, Hariharan" sort="Ramasubramanian, Hariharan" uniqKey="Ramasubramanian H" first="Hariharan" last="Ramasubramanian">Hariharan Ramasubramanian</name>
<name sortKey="Sampathkumar, Jayakrishnakumar" sort="Sampathkumar, Jayakrishnakumar" uniqKey="Sampathkumar J" first="Jayakrishnakumar" last="Sampathkumar">Jayakrishnakumar Sampathkumar</name>
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Influence of Surface Modifications of Acrylic Resin Teeth on Shear Bond Strength with Denture Base Resin-An Invitro Study

Influence of Surface Modifications of Acrylic Resin Teeth on Shear Bond Strength with Denture Base Resin-An Invitro Study

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Abstract

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