Linked Life Data

19892719

Source:http://linkedlifedata.com/resource/pubmed/id/19892719

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-3-25
pubmed:abstractText
The aim of this research was to investigate the retention of a bracket equipped with a novel base, the R-system. The design of the bracket base is characterized by concentric grooves. The behaviour of this bracket was compared with a bracket with a conventional mesh base from the same manufacturer. Thirty lower adult bovine incisors were selected and metallic brackets were bonded using the Concise adhesive system. Each bracket-adhesive-enamel interface was investigated according to torsion debonding. One-way analysis of variance was used for statistical evaluation. Finite element analysis was also undertaken. In order to assess if the technique was detrimental to the enamel, the mode of failure was determined using the Adhesive Remnant Index (ARI). The debonded surfaces were analysed using scanning electron microscopy (SEM) and electron dispersion spectrometry (EDS). The R-system provided a bond strength greater than that of the mesh-base bracket. EDS showed that the amount of calcium on the novel base was higher than that on the conventional base, which allowed transfer of torsional stress more uniformly to the substrate, resulting in higher bond values for the R-system. On the other hand, as debonding of the R-system occurred at the enamel-composite interface, lesions to the enamel substrate are possible.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
D
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1460-2210
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
219-23
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
A novel bracket base design: biomechanical stability.
pubmed:affiliation
Department of Oral and Maxillo-Facial Science, University of Naples Federico II, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't