Linked Life Data

10982929

Source:http://linkedlifedata.com/resource/pubmed/id/10982929

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2000-10-19
pubmed:abstractText
The purpose of this study was to determine the effects of changing the type of enamel conditioner on the shear bond strength of a resin-reinforced glass ionomer within half an hour after bonding the bracket to the tooth. Freshly extracted human molars were collected and stored in a solution of 0.1% (weight/volume) thymol. The teeth were cleaned and polished. The teeth were randomly separated into 4 groups according to the enamel conditioner/etchant and adhesive used: group I, teeth were conditioned with 10% polyacrylic acid and brackets were bonded with a resin-reinforced glass ionomer adhesive; group II, teeth were conditioned with 20% polyacrylic acid and brackets were bonded with a resin-reinforced glass ionomer adhesive; group III, teeth were etched with 37% phosphoric acid and the brackets were bonded with a resin-reinforced glass ionomer adhesive; group IV, teeth were etched with 37% phosphoric acid and the brackets were bonded with a composite adhesive. The results of the analysis of variance comparing the 4 experimental groups (F = 24.87) indicated the presence of significant differences between the groups (P =.0001). In general, the shear bond strengths were significantly greater in the 2 groups etched with 37% phosphoric acid. This was true for both the resin-reinforced glass ionomer (X = 6.1 +/- 2.7 MPa) and the composite (X = 5.2 +/- 2.9 MPa) adhesives. On the other hand, the shear bond strengths were significantly lower in the two groups conditioned with polyacrylic acid. The bond strength of the resin-reinforced glass ionomer adhesive conditioned with 10% polyacrylic acid (X = 0.4 +/- 1.0 MPa) was significantly lower than the group conditioned with 20% polyacrylic acid (&xmacr; = 3.3 +/- 2.6 MPa). The present findings indicated that the bond strength of the resin-reinforced glass ionomer adhesive can be significantly increased in the initial half hour after bonding if the enamel is etched with 37% phosphoric acid instead of being conditioned with either 10% or 20% polyacrylic acid. The clinician needs to take these properties into consideration when ligating the initial archwires.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
D
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0889-5406
pubmed:author
pubmed:issnType
Print
pubmed:volume
118
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
288-94
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10982929-Acid Etching, Dental, pubmed-meshheading:10982929-Acrylic Resins, pubmed-meshheading:10982929-Aluminum Silicates, pubmed-meshheading:10982929-Analysis of Variance, pubmed-meshheading:10982929-Bisphenol A-Glycidyl Methacrylate, pubmed-meshheading:10982929-Chi-Square Distribution, pubmed-meshheading:10982929-Dental Bonding, pubmed-meshheading:10982929-Dental Enamel, pubmed-meshheading:10982929-Dental Stress Analysis, pubmed-meshheading:10982929-Dentin-Bonding Agents, pubmed-meshheading:10982929-Glass Ionomer Cements, pubmed-meshheading:10982929-Humans, pubmed-meshheading:10982929-Orthodontic Brackets, pubmed-meshheading:10982929-Phosphoric Acids, pubmed-meshheading:10982929-Random Allocation, pubmed-meshheading:10982929-Resin Cements, pubmed-meshheading:10982929-Statistics, Nonparametric, pubmed-meshheading:10982929-Tensile Strength
pubmed:year
2000
pubmed:articleTitle
Effect of altering the type of enamel conditioner on the shear bond strength of a resin-reinforced glass ionomer adhesive.
pubmed:affiliation
College of Dentistry, University of Iowa, Iowa City, IA 52242-1001, USA.
pubmed:publicationType
Journal Article, Comparative Study