Document Detail


Effect of light-cure time of adhesive resin on the thickness of the oxygen-inhibited layer and the microtensile bond strength to dentin.
MedLine Citation:
PMID:  16333849     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A thick oxygen-inhibited layer (OIL) on a cured adhesive layer (AL) is believed to result in both good adaptation of composite resin (CR) and high bond strength. A high degree of conversion (DC) of the AL is also needed for durable bonding. This study evaluated the hypothesis that increasing the DC by prolonging the light-curing time of adhesive bonding resin might decrease the bond strength of the adhesive to dentin because of the subsequent thinning of the OIL thickness. The OIL thickness and the DC of solvent-removed One Step and D/E bonding resin of All Bond 2 (Bisco, USA) were measured simultaneously with FT-NIR spectroscopy according to increasing light-cure times (10, 20, 30, and 60 s) so as to evaluate their effect on the microtensile bond strength. The bonded interfaces were evaluated using scanning electron microscopy. Excessive irradiation of light-curing adhesives increased the DC, but decreased the OIL thickness. When the OIL was significantly thin by curing the adhesives for 30 or 60 s, defects were observed at the interface between the AL and the CR, as well as at the interface between the AL and the hybrid layer. When the OIL was thick, free radicals from the overlying CR may have diffused into the unreacted monomer mixtures of the OIL, chemically connecting the cured AL and the newly curing composite. It was found that to obtain maximum dentin bond strength, light-curing adhesives should be cured for the irradiation time recommended by the manufacturer.
Authors:
Jong-Soon Kim; Yong-Hoon Choi; Byeong-Hoon Cho; Ho-Hyun Son; In-Bog Lee; Chung-Moon Um; Chang-Keun Kim
Related Documents :
22506489 - Nano structures of group13-15 mixed heptamer clusters: a computational study.
1432579 - Effect of pretreatment with epoxy compounds on the mechanical properties of bovine peri...
19024259 - Bonding of autopolymerizing denture base resin to cast type iv gold alloy.
18690699 - Calcium-assisted glass-to-glass bonding for fabrication of glass microfluidic devices.
9082849 - In vitro evaluation of matrix-bound fluoride-releasing orthodontic bonding adhesives.
9484059 - 11-year follow-up study of resin-bonded fixed partial dentures.
12033889 - Study of the structural, electronic, and magnetic properties of the barium-rich iron(iv...
17044669 - Advanced fine-tuning of grubbs/hoveyda olefin metathesis catalysts: a further step towa...
22861349 - Semiexperimental equilibrium structures for the equatorial conformers of n-methylpiperi...
Publication Detail:
Type:  Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biomedical materials research. Part B, Applied biomaterials     Volume:  78     ISSN:  1552-4973     ISO Abbreviation:  J. Biomed. Mater. Res. Part B Appl. Biomater.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-06-08     Completed Date:  2007-11-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101234238     Medline TA:  J Biomed Mater Res B Appl Biomater     Country:  United States    
Other Details:
Languages:  eng     Pagination:  115-23     Citation Subset:  IM    
Affiliation:
Department of Conservative Dentistry, College of Dentistry, Seoul National University, Seoul, Korea.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Dentin*
Dentin-Bonding Agents / chemistry*
Humans
Molar
Oxygen / antagonists & inhibitors*
Spectroscopy, Fourier Transform Infrared
Spectroscopy, Near-Infrared
Tensile Strength
Chemical
Reg. No./Substance:
0/Dentin-Bonding Agents; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Ipsilateral breast tumor recurrence (IBTR) after breast-conserving treatment for early breast cancer...
Next Document:  Effect of an acidulated fluoride etchant on bonding between titanium and two luting materials.