File Download
There are no files associated with this item.
Supplementary
-
Citations:
- Appears in Collections:
Conference Paper: Novel Primers for Dental amalgam Repair
Title | Novel Primers for Dental amalgam Repair |
---|---|
Authors | |
Keywords | Adhesion Amalgams Composites Dental materials Silane |
Issue Date | 2012 |
Publisher | International Association for Dental Research. |
Citation | The 26th Annual Scientific Meeting of the International Association for Dental Research South-East Asia Division (IADR-SEA), Hong Kong, China, 3-4 November 2012. How to Cite? |
Abstract | Objectives: Replacement procedure might be a feasible treatment option if dental amalgam restoration is defected. However, such a procedure is invasive and could generate Hg aerosols, which are harmful to dental team and patients. Thus, repair of dental amalgam by bonding with a resin composite and primers might be a better alternative. Nevertheless, the commercial primers do not produce promising results on resin composite-amalgam bonding. Therefore, the objective in this laboratory study is to develop workable novel primers to bond resin composite better with amalgam.
Methods: 3 silanes, 3-acryloxypropyltrimethoxysilane (ACPS), bis-1,2-(triethoxysilyl)ethane (BTSE) and bis[3-(trimethoxysilyl)propyl]amine (BTMA), were used as novel primers with the following combinations: 1.0 vol% ACPS, 1.0 vol% ACPS + 0.5 vol% BTSE, 1.0 vol% ACPS + 0.5 vol% BTMA. These primers were applied on sand-blasted and silica-coated dental amalgam discs. A flowable resin composite was adhered onto the discs and shear bond strength (SBS) was measured at initial, after water storage (1 day, 1 week, 1 month and 3 months) and after thermocycling (1000, 3000 and 6000 cycles). Failure modes were classified. 2-way ANOVA was used to analyze the statistical difference.
Results: The initial SBS were 20.22 MPa for ACPS, 16.59 MPa for ACPS + BTSE, and 19.47 MPa for ACPS + BTMA. After 1 week water storage or 1000 cycles of thermocycling, the SBS remained stable, and decreased gradually with linearity in the rest of longer duration groups. After thermocycling, ACPS and ACPS + BTSE showed statistically higher SBS than ACPS + BTMA (p < 0.001); no statistically significance (p = 0.062) were found between these silanes after water storage. No cohesive failure were found within the resin composite; cohesive failure within amalgam and mixed failure were mostly observed.
Conclusions: Novel silane primers might be future repair materials which could enhance the resin composite-amalgam bonding. |
Description | Dental Materials Session: no. 168915 |
Persistent Identifier | http://hdl.handle.net/10722/180199 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jin, X | en_US |
dc.contributor.author | Tsoi, KH | en_US |
dc.contributor.author | Matinlinna, JP | en_US |
dc.date.accessioned | 2013-01-21T01:33:25Z | - |
dc.date.available | 2013-01-21T01:33:25Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | The 26th Annual Scientific Meeting of the International Association for Dental Research South-East Asia Division (IADR-SEA), Hong Kong, China, 3-4 November 2012. | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/180199 | - |
dc.description | Dental Materials Session: no. 168915 | - |
dc.description.abstract | Objectives: Replacement procedure might be a feasible treatment option if dental amalgam restoration is defected. However, such a procedure is invasive and could generate Hg aerosols, which are harmful to dental team and patients. Thus, repair of dental amalgam by bonding with a resin composite and primers might be a better alternative. Nevertheless, the commercial primers do not produce promising results on resin composite-amalgam bonding. Therefore, the objective in this laboratory study is to develop workable novel primers to bond resin composite better with amalgam. Methods: 3 silanes, 3-acryloxypropyltrimethoxysilane (ACPS), bis-1,2-(triethoxysilyl)ethane (BTSE) and bis[3-(trimethoxysilyl)propyl]amine (BTMA), were used as novel primers with the following combinations: 1.0 vol% ACPS, 1.0 vol% ACPS + 0.5 vol% BTSE, 1.0 vol% ACPS + 0.5 vol% BTMA. These primers were applied on sand-blasted and silica-coated dental amalgam discs. A flowable resin composite was adhered onto the discs and shear bond strength (SBS) was measured at initial, after water storage (1 day, 1 week, 1 month and 3 months) and after thermocycling (1000, 3000 and 6000 cycles). Failure modes were classified. 2-way ANOVA was used to analyze the statistical difference. Results: The initial SBS were 20.22 MPa for ACPS, 16.59 MPa for ACPS + BTSE, and 19.47 MPa for ACPS + BTMA. After 1 week water storage or 1000 cycles of thermocycling, the SBS remained stable, and decreased gradually with linearity in the rest of longer duration groups. After thermocycling, ACPS and ACPS + BTSE showed statistically higher SBS than ACPS + BTMA (p < 0.001); no statistically significance (p = 0.062) were found between these silanes after water storage. No cohesive failure were found within the resin composite; cohesive failure within amalgam and mixed failure were mostly observed. Conclusions: Novel silane primers might be future repair materials which could enhance the resin composite-amalgam bonding. | - |
dc.language | eng | en_US |
dc.publisher | International Association for Dental Research. | - |
dc.relation.ispartof | Annual Scientific Meeting of the International Association for Dental Research South-East Asia Division (IADR-SEA 2012) | - |
dc.subject | Adhesion | - |
dc.subject | Amalgams | - |
dc.subject | Composites | - |
dc.subject | Dental materials | - |
dc.subject | Silane | - |
dc.title | Novel Primers for Dental amalgam Repair | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Tsoi, KH: jkhtsoi@hkucc.hku.hk | en_US |
dc.identifier.email | Matinlinna, JP: jpmat@hku.hk | en_US |
dc.identifier.authority | Tsoi, KH=rp01609 | en_US |
dc.identifier.authority | Matinlinna, JP=rp00052 | en_US |
dc.identifier.hkuros | 212883 | en_US |
dc.publisher.place | United States | - |