Linked Life Data

12532055

Source:http://linkedlifedata.com/resource/pubmed/id/12532055

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-1-17
pubmed:abstractText
Much of the research into composite adhesives suggests that these materials will deteriorate in the oral environment, but most of these claims are made on the basis of extrapolation from in vitro experiments; relatively little in vivo research has been conducted into the mechanical properties of composite adhesives. For this study, we recruited 20 volunteers to wear removable appliances containing orthodontic brackets bonded to enamel slabs for 12 weeks. Each appliance carried 3 brackets bonded with Transbond (3M Unitek UK; Bradford, United Kingdom) and 3 brackets bonded with Heliosit (Ivoclar-Vivadent; Leicester, United Kingdom). The bond strengths were tested at intervals of 4, 8, and 12 weeks. Control specimens were stored in sterile water at 37 degrees C and were debonded at the same time intervals. Transbond specimens debonded after 4 weeks in vivo had significantly (P <.05) lower bond strengths (9.78 megapascals [MPa]) than did the controls (14.34 MPa). In vivo, specimens bonded with Heliosit had significantly (P <.05) lower bond strengths after 4 weeks (8.16 MPa vs 10.96 MPa) and 8 weeks (9.96 MPa vs 13.61 MPa) than did the controls. These results indicate differences between bond strength testing in vitro and in vivo. Further research is required into the effects of the oral environment on bond strength.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
D
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0889-5406
pubmed:author
pubmed:issnType
Print
pubmed:volume
123
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Comparison of in vivo and in vitro shear bond strength.
pubmed:affiliation
Department of Orthodontics, Sunderland Royal Hospital, Sunderland, United Kingdom. murnau@ireland.com
pubmed:publicationType
Journal Article, Comparative Study