Linked Life Data

15369471

Source:http://linkedlifedata.com/resource/pubmed/id/15369471

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2004-9-16
pubmed:abstractText
Conditioning the root canal is frequently advised to achieve high post-retention when resin composite luting cements are used. However, manufacturers' instructions for this purpose differ widely from one another. The aim of this study was to compare the tensile bond strengths of passive, tapered, titanium root posts that were luted with four different resin composite cements (Compolute Aplicap, Flexi-Flow cem, Panavia 21 EX, Twinlook) in the root canals at three conditions, namely (i) no conditioning, (ii) etching with 37% phosphoric acid, and (iii) etching + bonding agent application. Panavia 21 EX was further tested after using the primer for the post-surface according to the manufacturer's recommendations. The posts luted with zinc phosphate cement (Tenet) acted as the control group. Following endodontic preparation of 140 intact anterior teeth with hand instruments, the post-spaces were prepared using the opening drills of the corresponding size of the posts. The samples were first stored in water at 37 degrees C for 24 h and then thermocycled (5000 cycles, 5-55 degrees C, 30 s). The tensile strength values were measured with the universal testing machine at a crosshead speed of 0.5 mm min(-1). The data were analysed statistically using anova and corrected with Scheffé test due to the significance levels (P < 0.05). The tensile bond strengths of the titanium posts after luting with various cements and thermocycling were affected by the conditioning systems used for the root canals. Tensile bond strengths were the highest with Flexi-Flow (475 +/- 78 N) followed in descending order by Panavia 21 EX (442 +/- 97 N), Twinlook (430 +/- 78 N) and Compolute Aplicap (352 +/- 76 N) after conditioning the root canal. The use of primer on the post improved the tensile bond strength compared with the non-conditioned group for the Panavia 21 EX group (375 +/- 77 N) (P < 0.001). Tensile bond strengths obtained after luting the posts with zinc phosphate cement (414 +/- 102 N) were not significantly different (P < 0.05) than those of resin composite cements. Although the importance of conditioning the root canal was evident for Panavia 21 EX, it was not the case for the other luting cements tested.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
D
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Bisphenol A-Glycidyl Methacrylate, http://linkedlifedata.com/resource/pubmed/chemical/Compolute, http://linkedlifedata.com/resource/pubmed/chemical/Composite Resins, http://linkedlifedata.com/resource/pubmed/chemical/Dental Cements, http://linkedlifedata.com/resource/pubmed/chemical/Dental Implants, http://linkedlifedata.com/resource/pubmed/chemical/Flexi-Flow cement, http://linkedlifedata.com/resource/pubmed/chemical/Panavia EX, http://linkedlifedata.com/resource/pubmed/chemical/Panavia TPN-S, http://linkedlifedata.com/resource/pubmed/chemical/Phosphates, http://linkedlifedata.com/resource/pubmed/chemical/Resin Cements, http://linkedlifedata.com/resource/pubmed/chemical/Titanium, http://linkedlifedata.com/resource/pubmed/chemical/TwinLook cement, http://linkedlifedata.com/resource/pubmed/chemical/Zinc Compounds, http://linkedlifedata.com/resource/pubmed/chemical/zinc phosphate
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0305-182X
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
890-4
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Various conditioning methods for root canals influencing the tensile strength of titanium posts.
pubmed:affiliation
Department of Operative Dentistry and Periodontology, Dental School, University of Hamburg, Hamburg, Germany.
pubmed:publicationType
Journal Article