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Pressable feldspathic inlays in premolars: effect of cementation strategy and mechanical cycling on the adhesive bond between dentin and restoration.
- Source :
-
The journal of adhesive dentistry [J Adhes Dent] 2014 Apr; Vol. 16 (2), pp. 147-54. - Publication Year :
- 2014
-
Abstract
- Purpose: To evaluate the effect of the cementation strategy and mechanical cycling (MC) on the microtensile bond strength (MTBS) of feldspathic inlays cemented to premolars.<br />Materials and Methods: Forty-eight human premolars were prepared and porcelain inlays were produced. Specimens were allocated into 3 groups, based on the cementation strategy: 1) conventional adhesive cementation (RelyX ARC, 3M ESPE): application of etch-and-rinse single bottle adhesive to dentin / ceramic surface treated with hydrofluoric acid (HF) and silane (S) / cementation with resin cement; 2) simplified cementation using a self-adhesive resin cement (RelyX U100, 3M ESPE); 3) modified simplified cementation using a self-adhesive resin cement (RelyX U100, 3M ESPE) with HF+S treatment. Half of the specimens from each group were submitted to MC (2x106 pulses, frequency = 4 Hz, load = 100 N). Each specimen was serially sliced for MTBS and the failures were classified. The stress distribution analysis using FEA was verified.<br />Results: All of the bar-samples from G2 were lost during cutting of the specimens. Mechanical-cycling had no significant effect on bond strength, whereas cementation strategy significant affected MTBS results. The most common type of failure was cohesive of cement. FEA showed that stresses were concentrated mainly at the loading region going up to the root fixation.<br />Conclusion: Porcelain inlays cemented with conventional resin cement or self-adhesive resin cement should be associated with ceramic surface treatment. FEA showed the most critical zone for failure is located in the cement region close to the marginal crest.
- Subjects :
- Acid Etching, Dental methods
Adhesiveness
Bisphenol A-Glycidyl Methacrylate chemistry
Composite Resins chemistry
Computer-Aided Design
Dental Cavity Preparation methods
Elastic Modulus
Finite Element Analysis
Humans
Hydrofluoric Acid chemistry
Materials Testing
Phosphoric Acids chemistry
Polyethylene Glycols chemistry
Polymethacrylic Acids chemistry
Resin Cements chemistry
Silanes chemistry
Stress, Mechanical
Surface Properties
Tensile Strength
Aluminum Silicates chemistry
Bicuspid ultrastructure
Cementation methods
Dental Bonding methods
Dental Porcelain chemistry
Dentin ultrastructure
Inlays
Potassium Compounds chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1461-5185
- Volume :
- 16
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- The journal of adhesive dentistry
- Publication Type :
- Academic Journal
- Accession number :
- 24027771
- Full Text :
- https://doi.org/10.3290/j.jad.a30555