The effect of phosphate functionality and dentin surface state on adhesion to dentin was investigated in a series of experiments. In all cases, variable effects were evaluated by measuring the strength of adhesion promoted by either of two priming agents, (PENTA, or DIPENTA), or their combination, to different surface conditions of dentin. The main difference between primers is the presence of a phosphate functionality in PENTA. These experiments demonstrated that the phosphate-containing primer promotes significantly greater adhesion compared to the non-phosphate containing primer for all surface states studied. They further showed that on demineralized dentin, strong adhesion for PENTA may be due to phosphate interaction with collagen and the mineral aptatite of unaltered dentin. Finally, phosphate bonds to either intact or demineralized dentin were relatively stable in the presence of water. We conclude that for the adhesion promoter studied, the interaction of a phosphate functionality with organic and inorganic components of dentin promotes a strong and durable adhesive joint.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.30774 |
| Date | January 1999 |
| Creators | Yavari, Mansoureh. |
| Contributors | Stangel, Ivan (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Faculty of Dentistry.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001754437, proquestno: MQ64485, Theses scanned by UMI/ProQuest. |
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