Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base
Identifieur interne : 000271 ( Main/Exploration ); précédent : 000270; suivant : 000272Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base
Auteurs : Lana Ahmed ShinawiSource :
- Electronic Physician [ 2008-5842 ] ; 2017.
Abstract
The application of computer-aided design computer-aided manufacturing (CAD CAM) technology in the fabrication of complete dentures, offers numerous advantages as it provides optimum fit and eliminates polymerization shrinkage of the acrylic base. Additionally, the porosity and surface roughness of CAD CAM resins is less compared to conventionally processed resins which leads to a decrease in the adhesion of bacteria on the denture base, which is associated with many conditions including halitosis and aspiration pneumonia in elderly denture wearers.
To evaluate the influence of tooth brushing with dentifrices on CAD CAM resin blocks in terms of abrasion resistance, surface roughness and scanning electron photomicrography.
This experimental study was carried out at the Faculty of Dentistry of King Abdulaziz University during 2016. A total of 40 rectangular shaped polymerized CAD CAM resin samples were subjected to 40.000 and 60.000 brushing strokes under a 200-gram vertical load simulating three years of tooth brushing strokes using commercially available denture cleaning dentifrice. Data were analyzed by SPSS version 20, using descriptive statistics and ANOVA.
ANOVA test revealed a statistical significant weight loss of CAD CAM acrylic resin denture base specimens following 40.000 and 60.000 brushing strokes as well as a statistical significant change (p=0.0.5) in the surface roughness following brushing. The CAD CAM resin samples SEM baseline imaging revealed a relatively smooth homogenous surface, but following 40,000 and 60,000 brushing strokes, imaging displayed the presence of small scratches on the surface.
CAD CAM resin displayed a homogenous surface initially with low surface roughness that was significantly affected following simulating three years of manual brushing, but despite the significant weight loss, the findings are within the clinically acceptable limits.
Url:
DOI: 10.19082/4281
PubMed: 28713496
PubMed Central: 5498689
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base</title><author><name sortKey="Shinawi, Lana Ahmed" sort="Shinawi, Lana Ahmed" uniqKey="Shinawi L" first="Lana Ahmed" last="Shinawi">Lana Ahmed Shinawi</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">28713496</idno><idno type="pmc">5498689</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498689</idno><idno type="RBID">PMC:5498689</idno><idno type="doi">10.19082/4281</idno><date when="2017">2017</date><idno type="wicri:Area/Pmc/Corpus">002C16</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002C16</idno><idno type="wicri:Area/Pmc/Curation">002C16</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002C16</idno><idno type="wicri:Area/Pmc/Checkpoint">000250</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000250</idno><idno type="wicri:Area/Ncbi/Merge">007086</idno><idno type="wicri:Area/Ncbi/Curation">007086</idno><idno type="wicri:Area/Ncbi/Checkpoint">007086</idno><idno type="wicri:Area/Main/Merge">000271</idno><idno type="wicri:Area/Main/Curation">000271</idno><idno type="wicri:Area/Main/Exploration">000271</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base</title><author><name sortKey="Shinawi, Lana Ahmed" sort="Shinawi, Lana Ahmed" uniqKey="Shinawi L" first="Lana Ahmed" last="Shinawi">Lana Ahmed Shinawi</name></author></analytic><series><title level="j">Electronic Physician</title><idno type="eISSN">2008-5842</idno><imprint><date when="2017">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>The application of computer-aided design computer-aided manufacturing (CAD CAM) technology in the fabrication of complete dentures, offers numerous advantages as it provides optimum fit and eliminates polymerization shrinkage of the acrylic base. Additionally, the porosity and surface roughness of CAD CAM resins is less compared to conventionally processed resins which leads to a decrease in the adhesion of bacteria on the denture base, which is associated with many conditions including halitosis and aspiration pneumonia in elderly denture wearers.</p></sec><sec><title>Aim</title><p>To evaluate the influence of tooth brushing with dentifrices on CAD CAM resin blocks in terms of abrasion resistance, surface roughness and scanning electron photomicrography.</p></sec><sec><title>Methods</title><p>This experimental study was carried out at the Faculty of Dentistry of King Abdulaziz University during 2016. A total of 40 rectangular shaped polymerized CAD CAM resin samples were subjected to 40.000 and 60.000 brushing strokes under a 200-gram vertical load simulating three years of tooth brushing strokes using commercially available denture cleaning dentifrice. Data were analyzed by SPSS version 20, using descriptive statistics and ANOVA.</p></sec><sec><title>Results</title><p>ANOVA test revealed a statistical significant weight loss of CAD CAM acrylic resin denture base specimens following 40.000 and 60.000 brushing strokes as well as a statistical significant change (p=0.0.5) in the surface roughness following brushing. The CAD CAM resin samples SEM baseline imaging revealed a relatively smooth homogenous surface, but following 40,000 and 60,000 brushing strokes, imaging displayed the presence of small scratches on the surface.</p></sec><sec><title>Conclusion</title><p>CAD CAM resin displayed a homogenous surface initially with low surface roughness that was significantly affected following simulating three years of manual brushing, but despite the significant weight loss, the findings are within the clinically acceptable limits.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Coulthwaite, L" uniqKey="Coulthwaite L">L Coulthwaite</name></author><author><name sortKey="Verran, J" uniqKey="Verran J">J Verran</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Theilade, E" uniqKey="Theilade E">E Theilade</name></author><author><name sortKey="Eb J" uniqKey="Eb J">EB-J</name></author><author><name 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