Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base
Background: 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...
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| Format: | Article |
| Language: | English |
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Electronic Physician
2017-05-01
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| Series: | Electronic Physician |
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498689/ |
| _version_ | 1818469698114682880 |
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| author | Lana Ahmed Shinawi |
| author_facet | Lana Ahmed Shinawi |
| author_sort | Lana Ahmed Shinawi |
| collection | DOAJ |
| description | Background: 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.
Aim: 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.
Methods: 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.
Results: 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.
Conclusion: 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. |
| first_indexed | 2024-04-13T21:27:48Z |
| format | Article |
| id | doaj.art-6b32cbe16e554238a56ecda0f5706a4a |
| institution | Directory Open Access Journal |
| issn | 2008-5842 2008-5842 |
| language | English |
| last_indexed | 2024-04-13T21:27:48Z |
| publishDate | 2017-05-01 |
| publisher | Electronic Physician |
| record_format | Article |
| series | Electronic Physician |
| spelling | doaj.art-6b32cbe16e554238a56ecda0f5706a4a2022-12-22T02:29:16ZengElectronic PhysicianElectronic Physician2008-58422008-58422017-05-01954281428810.19082/4281Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture baseLana Ahmed ShinawiBackground: 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. Aim: 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. Methods: 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. Results: 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. Conclusion: 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.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498689/Denture cleansingDenture base materialsCAD CAMAbrasion resistance |
| spellingShingle | Lana Ahmed Shinawi Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base Electronic Physician Denture cleansing Denture base materials CAD CAM Abrasion resistance |
| title | Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base |
| title_full | Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base |
| title_fullStr | Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base |
| title_full_unstemmed | Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base |
| title_short | Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base |
| title_sort | effect of denture cleaning on abrasion resistance and surface topography of polymerized cad cam acrylic resin denture base |
| topic | Denture cleansing Denture base materials CAD CAM Abrasion resistance |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498689/ |
| work_keys_str_mv | AT lanaahmedshinawi effectofdenturecleaningonabrasionresistanceandsurfacetopographyofpolymerizedcadcamacrylicresindenturebase |