Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method
Objectives: To evaluate the micro-tensile repair bond strength between aged and new composite, using silane and adhesives that were cured or left uncured when new composite was placed. Methods: Eighty Filtek Supreme XLT composite blocks and four control blocks were stored in water for two weeks and...
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| Format: | Article |
| Language: | English |
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Medical Journals Sweden
2017-01-01
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| Series: | Acta Biomaterialia Odontologica Scandinavica |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/23337931.2017.1301211 |
| _version_ | 1826909351709769728 |
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| author | Sigfus Thor Eliasson Jon E. Dahl |
| author_facet | Sigfus Thor Eliasson Jon E. Dahl |
| author_sort | Sigfus Thor Eliasson |
| collection | DOAJ |
| description | Objectives: To evaluate the micro-tensile repair bond strength between aged and new composite, using silane and adhesives that were cured or left uncured when new composite was placed. Methods: Eighty Filtek Supreme XLT composite blocks and four control blocks were stored in water for two weeks and thermo-cycled. Sandpaper ground, etched and rinsed specimens were divided into two experimental groups: A, no further treatment and B, the surface was coated with bis-silane. Each group was divided into subgroups: (1) Adper Scotchbond Multi-Purpose, (2) Adper Scotchbond Multi-Purpose adhesive, (3) Adper Scotchbond Universal, (4) Clearfil SE Bond and (5) One Step Plus. For each adhesive group, the adhesive was (a) cured according to manufacturer’s instructions or (b) not cured before repair. The substrate blocks were repaired with Filtek Supreme XLT. After aging, they were serially sectioned, producing 1.1 × 1.1 mm square test rods. The rods were prepared for tensile testing and tensile strength calculated at fracture. Type of fracture was examined under microscope. Results: Leaving the adhesive uncured prior to composite repair placement increased the mean tensile values statistically significant for all adhesives tested, with or without silane pretreatment. Silane surface treatment improved significantly (p < 0.001) tensile strength values for all adhesives, both for the cured and uncured groups. The mean strength of the control composite was higher than the strongest repair strength (p < 0.001). Conclusions: Application of freshly made silane and a thin bonding layer, rendered higher tensile bond strength. Not curing the adhesive before composite placement increased the tensile bond strength. |
| first_indexed | 2024-12-17T06:34:05Z |
| format | Article |
| id | doaj.art-c87b83a97afe468fbcc3f8ad74fd7e67 |
| institution | Directory Open Access Journal |
| issn | 2333-7931 |
| language | English |
| last_indexed | 2025-02-17T09:39:24Z |
| publishDate | 2017-01-01 |
| publisher | Medical Journals Sweden |
| record_format | Article |
| series | Acta Biomaterialia Odontologica Scandinavica |
| spelling | doaj.art-c87b83a97afe468fbcc3f8ad74fd7e672025-01-02T08:42:48ZengMedical Journals SwedenActa Biomaterialia Odontologica Scandinavica2333-79312017-01-0131212910.1080/23337931.2017.13012111301211Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test methodSigfus Thor Eliasson0Jon E. Dahl1Nordic Institute of Dental MaterialsNordic Institute of Dental MaterialsObjectives: To evaluate the micro-tensile repair bond strength between aged and new composite, using silane and adhesives that were cured or left uncured when new composite was placed. Methods: Eighty Filtek Supreme XLT composite blocks and four control blocks were stored in water for two weeks and thermo-cycled. Sandpaper ground, etched and rinsed specimens were divided into two experimental groups: A, no further treatment and B, the surface was coated with bis-silane. Each group was divided into subgroups: (1) Adper Scotchbond Multi-Purpose, (2) Adper Scotchbond Multi-Purpose adhesive, (3) Adper Scotchbond Universal, (4) Clearfil SE Bond and (5) One Step Plus. For each adhesive group, the adhesive was (a) cured according to manufacturer’s instructions or (b) not cured before repair. The substrate blocks were repaired with Filtek Supreme XLT. After aging, they were serially sectioned, producing 1.1 × 1.1 mm square test rods. The rods were prepared for tensile testing and tensile strength calculated at fracture. Type of fracture was examined under microscope. Results: Leaving the adhesive uncured prior to composite repair placement increased the mean tensile values statistically significant for all adhesives tested, with or without silane pretreatment. Silane surface treatment improved significantly (p < 0.001) tensile strength values for all adhesives, both for the cured and uncured groups. The mean strength of the control composite was higher than the strongest repair strength (p < 0.001). Conclusions: Application of freshly made silane and a thin bonding layer, rendered higher tensile bond strength. Not curing the adhesive before composite placement increased the tensile bond strength.http://dx.doi.org/10.1080/23337931.2017.1301211Adhesivecuringsilane |
| spellingShingle | Sigfus Thor Eliasson Jon E. Dahl Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method Acta Biomaterialia Odontologica Scandinavica Adhesive curing silane |
| title | Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method |
| title_full | Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method |
| title_fullStr | Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method |
| title_full_unstemmed | Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method |
| title_short | Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method |
| title_sort | effect of curing and silanizing on composite repair bond strength using an improved micro tensile test method |
| topic | Adhesive curing silane |
| url | http://dx.doi.org/10.1080/23337931.2017.1301211 |
| work_keys_str_mv | AT sigfusthoreliasson effectofcuringandsilanizingoncompositerepairbondstrengthusinganimprovedmicrotensiletestmethod AT jonedahl effectofcuringandsilanizingoncompositerepairbondstrengthusinganimprovedmicrotensiletestmethod |