Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment
Abstract Background Flexible denture base polymers have gained popularity in modern dentistry however, their biofilm formation tendency, adversely affecting the oral tissue heath, remains a concern. Consequently, this study aimed to evaluate surface roughness and biofilm formation tendency of two ty...
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| Format: | Article |
| Language: | English |
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BMC
2023-12-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-023-03718-0 |
| _version_ | 1797397741322633216 |
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| author | Salma M. Fathy Mahmoud Saad Abdel-Halim Samy El-Safty Amira M. El-Ganiny |
| author_facet | Salma M. Fathy Mahmoud Saad Abdel-Halim Samy El-Safty Amira M. El-Ganiny |
| author_sort | Salma M. Fathy |
| collection | DOAJ |
| description | Abstract Background Flexible denture base polymers have gained popularity in modern dentistry however, their biofilm formation tendency, adversely affecting the oral tissue heath, remains a concern. Consequently, this study aimed to evaluate surface roughness and biofilm formation tendency of two types of denture base resins manufactured with two techniques before and after surface coating with chlorohexidine (CHX) NPs. Materials and methods Acetal (AC) and Polymethyl-methacrylate (PMMA) resins manufactured by conventional and CAD/CAM methods were shaped into disk (10 X 10 X 1 mm). They were dipped for 8 h and 24 h in colloidal suspension prepared by mixing aqueous solution of CHX digluconate and hexa-metaphosphate (0.01 M). Surface roughness, optical density (OD) of microbial growth media and biofilm formation tendency were evaluated directly after coating. Elutes concentrations of released CHX were evaluated for 19 days using spectrophotometer. Three-way ANOVA and Tukey’s post-hoc statistical analysis were used to assess the outcomes. Results AC CAD/CAM groups showed statistically significant higher roughness before and after coating (54.703 ± 4.32 and 77.58 ± 6.07 nm, respectively). All groups showed significant reduction in OD and biofilm formation tendency after surface coating even after 19 days of CHX NPs release. Conclusions Biofilm formation tendency was highly relevant to surface roughness of tested resins before coating. After CHX NPs coating all tested groups showed significant impact on microbial growth and reduction in biofilm formation tendency with no relation to surface roughness. Significant antimicrobial effect remained even after 19 days of NPs release and specimens storage. |
| first_indexed | 2024-03-09T01:14:33Z |
| format | Article |
| id | doaj.art-53d7bed345174925a32d88c9fb35a359 |
| institution | Directory Open Access Journal |
| issn | 1472-6831 |
| language | English |
| last_indexed | 2024-03-09T01:14:33Z |
| publishDate | 2023-12-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj.art-53d7bed345174925a32d88c9fb35a3592023-12-10T12:34:11ZengBMCBMC Oral Health1472-68312023-12-0123111310.1186/s12903-023-03718-0Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatmentSalma M. Fathy0Mahmoud Saad Abdel-Halim1Samy El-Safty2Amira M. El-Ganiny3Dental Biomaterials Department, Faculty of Oral and Dental Medicine, Zagazig University, Zagazig, Egypt, and Faculty of Dentistry, Badr UniversityMicrobiology and Immunology Department, Faculty of Pharmacy, Zagazig UniversityDental Biomaterials Department, Faculty of Dentistry, Tanta UniversityMicrobiology and Immunology Department, Faculty of Pharmacy, Zagazig UniversityAbstract Background Flexible denture base polymers have gained popularity in modern dentistry however, their biofilm formation tendency, adversely affecting the oral tissue heath, remains a concern. Consequently, this study aimed to evaluate surface roughness and biofilm formation tendency of two types of denture base resins manufactured with two techniques before and after surface coating with chlorohexidine (CHX) NPs. Materials and methods Acetal (AC) and Polymethyl-methacrylate (PMMA) resins manufactured by conventional and CAD/CAM methods were shaped into disk (10 X 10 X 1 mm). They were dipped for 8 h and 24 h in colloidal suspension prepared by mixing aqueous solution of CHX digluconate and hexa-metaphosphate (0.01 M). Surface roughness, optical density (OD) of microbial growth media and biofilm formation tendency were evaluated directly after coating. Elutes concentrations of released CHX were evaluated for 19 days using spectrophotometer. Three-way ANOVA and Tukey’s post-hoc statistical analysis were used to assess the outcomes. Results AC CAD/CAM groups showed statistically significant higher roughness before and after coating (54.703 ± 4.32 and 77.58 ± 6.07 nm, respectively). All groups showed significant reduction in OD and biofilm formation tendency after surface coating even after 19 days of CHX NPs release. Conclusions Biofilm formation tendency was highly relevant to surface roughness of tested resins before coating. After CHX NPs coating all tested groups showed significant impact on microbial growth and reduction in biofilm formation tendency with no relation to surface roughness. Significant antimicrobial effect remained even after 19 days of NPs release and specimens storage.https://doi.org/10.1186/s12903-023-03718-0Antimicrobial efficacyBiofilmFlexible denture basesSelf-cleaning dental materialsSurface roughnessThermoplastic denture resin |
| spellingShingle | Salma M. Fathy Mahmoud Saad Abdel-Halim Samy El-Safty Amira M. El-Ganiny Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment BMC Oral Health Antimicrobial efficacy Biofilm Flexible denture bases Self-cleaning dental materials Surface roughness Thermoplastic denture resin |
| title | Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment |
| title_full | Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment |
| title_fullStr | Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment |
| title_full_unstemmed | Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment |
| title_short | Evaluation of polymethyl-methacrylate and acetal denture base resins processed by two different techniques before and after nano-chlorohexidine surface treatment |
| title_sort | evaluation of polymethyl methacrylate and acetal denture base resins processed by two different techniques before and after nano chlorohexidine surface treatment |
| topic | Antimicrobial efficacy Biofilm Flexible denture bases Self-cleaning dental materials Surface roughness Thermoplastic denture resin |
| url | https://doi.org/10.1186/s12903-023-03718-0 |
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