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Effects of oxalate on dentin bonding
E L Pashley1, L Tao, D H Pashley
1Department of Oral Biology/Physiology, School of Dentistry, Medical College of Georgia, Augusta, 30912-1129.
American Journal of Dentistry
|June 1, 1993
Summary
Topical potassium oxalate treatment reduces dentin bonding resin strength. However, pumicing oxalate-treated dentin can restore normal bond strengths for specific bonding resins like Superbond and All Bond.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Adhesive Dentistry
Background:
- Dentin bonding agents are crucial for dental restorations.
- Surface treatments can affect the adhesion of bonding resins.
- Potassium oxalate is used in some dental applications.
Purpose of the Study:
- To evaluate the impact of topical potassium oxalate on dentin.
- To assess the interference of oxalate treatment with dentin bonding resins.
- To determine methods for mitigating potential adverse effects.
Main Methods:
- Dentin surfaces were treated with potassium oxalate.
- The bond strength of three different dentin bonding resins (Superbond, All Bond, Scotchbond 2) was tested.
- Investigated the effect of pumicing on oxalate-treated dentin bond strengths.
Main Results:
- Potassium oxalate significantly lowered the bond strengths for Superbond, All Bond, and Scotchbond 2.
- Pumicing the oxalate-treated dentin allowed for the recovery of normal bond strengths with Superbond and All Bond.
- Scotchbond 2 did not show bond strength recovery after pumicing.
Conclusions:
- Topical potassium oxalate negatively affects dentin bond strengths.
- Pumicing is an effective surface treatment to restore adhesion for certain dentin bonding resins after oxalate exposure.
- Clinicians should consider surface preparation protocols when using oxalate-containing agents prior to bonding procedures.