Shear bond strength of two chemically different denture base polymers to reline materials
Purpose: This study evaluated the shear bond strengths of light-polymerized urethane dimethacrylate (Eclipse) and heat-polymerized polymethylmethacrylate (Meliodent) denture base polymers to intraoral and laboratory-processed reline materials. Materials and Methods: Thirty disks measuring 15 mm diam...
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| Format: | Article |
| Language: | English |
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Wiley
2009
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| Online Access: | http://eprints.um.edu.my/3793/1/Shear_Bond_Strength_of_Two_Chemically_Different_Denture_Base_Polymers_to_Reline_Materials.pdf |
| _version_ | 1825718856031666176 |
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| author | Ahmad, Fauziah Yunus, Norsiah |
| author_facet | Ahmad, Fauziah Yunus, Norsiah |
| author_sort | Ahmad, Fauziah |
| collection | UM |
| description | Purpose: This study evaluated the shear bond strengths of light-polymerized urethane dimethacrylate (Eclipse) and heat-polymerized polymethylmethacrylate (Meliodent) denture base polymers to intraoral and laboratory-processed reline materials. Materials and Methods: Thirty disks measuring 15 mm diameter and 2 mm thick were prepared for each denture base material following the manufacturers' recommendation. They were relined with Meliodent RR, Kooliner, and Secure reline materials after 1 month of water immersion. Ten additional Eclipse specimens were relined using the same Eclipse resin. A shear bond test was carried out on an Instron machine at a crosshead speed of 1.0 mm/min 24 hours after relining. Data were analyzed using two-way and one-way ANOVAs and post hoc Dunnett's T3 test (p = 0.05). The nature of failure was analyzed under a stereomicroscope. The effect of dichloromethane adhesive on the two denture polymer surfaces and the failed interfaces of mixed and adhesive failures were analyzed under a SEM (scanning electron microscope). Results: Two-way ANOVA showed significant differences in the shear bond strength values as a function of the denture base polymers, reline materials, and their interaction (p < 0.05). One-way ANOVA showed significant differences in shear bond strength values among denture base-reline combinations (p < 0.05) except for Meliodent-Kooliner and Eclipse-Meliodent RR relines. Meliodent showed the highest shear bond strength value when relined with Meliodent RR (14.5 +/- 0.5 MPa), and Eclipse showed the highest value with Eclipse relining (11.4 +/- 0.6 MPa). Meliodent denture base showed adhesive, cohesive, and mixed failure, while all Eclipse showed adhesive failure with various reline materials. Conclusion: The two chemically different denture base polymers showed different shear bond strength values to corresponding reline materials. |
| first_indexed | 2024-03-06T05:10:43Z |
| format | Article |
| id | um.eprints-3793 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:10:43Z |
| publishDate | 2009 |
| publisher | Wiley |
| record_format | dspace |
| spelling | um.eprints-37932018-10-19T07:28:14Z http://eprints.um.edu.my/3793/ Shear bond strength of two chemically different denture base polymers to reline materials Ahmad, Fauziah Yunus, Norsiah RK Dentistry Purpose: This study evaluated the shear bond strengths of light-polymerized urethane dimethacrylate (Eclipse) and heat-polymerized polymethylmethacrylate (Meliodent) denture base polymers to intraoral and laboratory-processed reline materials. Materials and Methods: Thirty disks measuring 15 mm diameter and 2 mm thick were prepared for each denture base material following the manufacturers' recommendation. They were relined with Meliodent RR, Kooliner, and Secure reline materials after 1 month of water immersion. Ten additional Eclipse specimens were relined using the same Eclipse resin. A shear bond test was carried out on an Instron machine at a crosshead speed of 1.0 mm/min 24 hours after relining. Data were analyzed using two-way and one-way ANOVAs and post hoc Dunnett's T3 test (p = 0.05). The nature of failure was analyzed under a stereomicroscope. The effect of dichloromethane adhesive on the two denture polymer surfaces and the failed interfaces of mixed and adhesive failures were analyzed under a SEM (scanning electron microscope). Results: Two-way ANOVA showed significant differences in the shear bond strength values as a function of the denture base polymers, reline materials, and their interaction (p < 0.05). One-way ANOVA showed significant differences in shear bond strength values among denture base-reline combinations (p < 0.05) except for Meliodent-Kooliner and Eclipse-Meliodent RR relines. Meliodent showed the highest shear bond strength value when relined with Meliodent RR (14.5 +/- 0.5 MPa), and Eclipse showed the highest value with Eclipse relining (11.4 +/- 0.6 MPa). Meliodent denture base showed adhesive, cohesive, and mixed failure, while all Eclipse showed adhesive failure with various reline materials. Conclusion: The two chemically different denture base polymers showed different shear bond strength values to corresponding reline materials. Wiley 2009 Article PeerReviewed application/pdf en http://eprints.um.edu.my/3793/1/Shear_Bond_Strength_of_Two_Chemically_Different_Denture_Base_Polymers_to_Reline_Materials.pdf Ahmad, Fauziah and Yunus, Norsiah (2009) Shear bond strength of two chemically different denture base polymers to reline materials. Journal of Prosthodontics, 18 (7). pp. 596-602. ISSN 1059-941X, DOI https://doi.org/10.1111/j.1532-849X.2009.00481.x <https://doi.org/10.1111/j.1532-849X.2009.00481.x>. https://doi.org/10.1111/j.1532-849X.2009.00481.x doi:10.1111/j.1532-849X.2009.00481.x |
| spellingShingle | RK Dentistry Ahmad, Fauziah Yunus, Norsiah Shear bond strength of two chemically different denture base polymers to reline materials |
| title | Shear bond strength of two chemically different denture base polymers to reline materials |
| title_full | Shear bond strength of two chemically different denture base polymers to reline materials |
| title_fullStr | Shear bond strength of two chemically different denture base polymers to reline materials |
| title_full_unstemmed | Shear bond strength of two chemically different denture base polymers to reline materials |
| title_short | Shear bond strength of two chemically different denture base polymers to reline materials |
| title_sort | shear bond strength of two chemically different denture base polymers to reline materials |
| topic | RK Dentistry |
| url | http://eprints.um.edu.my/3793/1/Shear_Bond_Strength_of_Two_Chemically_Different_Denture_Base_Polymers_to_Reline_Materials.pdf |
| work_keys_str_mv | AT ahmadfauziah shearbondstrengthoftwochemicallydifferentdenturebasepolymerstorelinematerials AT yunusnorsiah shearbondstrengthoftwochemicallydifferentdenturebasepolymerstorelinematerials |