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‘No-bottle’ vs ‘multi-bottle’ dentin adhesives—a microtensile bond strength and morphological study
- Source :
- Dental Materials. 17:373-380
- Publication Year :
- 2001
- Publisher :
- Elsevier BV, 2001.
-
Abstract
- To compare the adhesive capability of the new adhesive Prompt L-Pop (ESPE) with that of two total-etch adhesive systems-EBS Multi (ESPE) and PrimeBond NT (Dentsply).Extracted human molars were bonded and prepared for microtensile dentin bond strength (microTBS) testing using Prompt L-Pop, EBS Multi, and PrimeBond NT combined with Pertac II (composite) or Hytac Aplitip (compomer). Prompt L-Pop was applied using five different protocols: (1) as an "all-in-one" self-conditioning adhesive, as per manufacturer's instructions (LP); (2) as a self-etching primer combined with a separate bonding resin (LP/self-etch 2-step); (3) as a classical primer used upon etching dentin with phosphoric acid, followed by a bonding resin (LP/total-etch 3-step); (4) as a multi-application "all-in-one" self-conditioning adhesive (LP/multi-coat) to leave a visibly glossy dentin surface; and (5) as a filled adhesive, upon adding quartz fillers to its composition (LP/filled). After 24h of storage in water at 37 degrees C the microTBS were measured in an Instron machine. Corresponding interfaces of the same specimens were micromorphologically analyzed using SEM and TEM.When used with a composite resin, LP/filled and LP/multi-coat resulted in significantly higher microTBS than LP. The addition of an extra adhesive bonding resin (LP/self-etch 2-step) had no effect on bond strength. The use of Prompt L-Pop as a primer of a fourth-generation adhesive (LP/total-etch 3-step) replacing the EBS Multi primer, resulted in lower bond strengths than those of the original EBS Multi. LP/multi-coat showed similar microTBS to PrimeBond NT (PBNT). When used with a compomer, LP exhibited higher bond strengths than when used with the resin composite and was as effective as the experimental groups LP/filled and LP/multi-coat and the control group PBNT. The SEM evaluation showed an inconsistent hybrid layer for the LP specimens, whereas in both the LP/filled and LP/multi-coat specimens a hybrid layer was clearly evident. Under the TEM all groups displayed dentin hybridization with dissolved smear plugs in the specimens that had been conditioned with Prompt L-Pop without a separate etching step. In many tubules of specimens conditioned with LP (as per manufacturer's instructions), fillers of the resin composite were present within the dentinal tubules.When combined with a resin composite, Prompt L-Pop resulted in statistically lower bond strengths when applied in one layer than when applied in multiple layers. Prompt L-Pop also resulted in higher bond strengths when used with a polyacid-modified composite resin than with a composite resin. When applied in multiple coats, Prompt L-Pop results in bond strengths that are not statistically different from those of PrimeBond NT, a total-etch adhesive.
- Subjects :
- Dental Stress Analysis
Materials science
Adhesive bonding
Surface Properties
Statistics as Topic
Composite number
Smear layer
Dental bonding
Composite Resins
Statistics, Nonparametric
Acid Etching, Dental
Polymethacrylic Acids
stomatognathic system
Tensile Strength
Immersion
Materials Testing
Ultimate tensile strength
Dentin
medicine
Humans
Bisphenol A-Glycidyl Methacrylate
Phosphoric Acids
General Materials Science
Composite material
General Dentistry
Compomers
Bond strength
Dental Bonding
Temperature
technology, industry, and agriculture
Water
Quartz
Resin Cements
Microscopy, Electron
medicine.anatomical_structure
Glass Ionomer Cements
Mechanics of Materials
Dentin-Bonding Agents
Smear Layer
Microscopy, Electron, Scanning
Methacrylates
Stress, Mechanical
Adhesive
Subjects
Details
- ISSN :
- 01095641
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Dental Materials
- Accession number :
- edsair.doi.dedup.....74a50ead93eb973e3b190fcfa6a834d1
- Full Text :
- https://doi.org/10.1016/s0109-5641(00)00084-1