Influence of different adhesive systems on the pull-out bond strength of glass fiber posts
J. appl. oral sci
;
16(3): 232-235, May-June 2008. ilus
Article
in English
| LILACS, BBO
| ID: lil-483159
ABSTRACT
This in vitro study evaluated the tensile bond strength of glass fiber posts (Reforpost Angelus-Brazil) cemented to root dentin with a resin cement (RelyX ARC 3M/ESPE) associated with two different adhesive systems (Adper Single Bond - 3M/ ESPE and Adper Scotchbond Multi Purpose (MP) Plus 3M/ESPE), using the pull-out test. Twenty single-rooted human teeth with standardized root canals were randomly assigned to 2 groups (n=10) G1- etching with 37% phosphoric acid gel (3M/ ESPE) + Adper Single Bond + #1 post (Reforpost Angelus) + four #1 accessory posts (Reforpin Angelus) + resin cement; G2- etching with 37% phosphoric acid gel + Adper Scotchbond MP Plus + #1 post + four #1 accessory posts + resin cement. The specimens were stored in distilled water at 37°C for 7 days and submitted to the pull-out test in a universal testing machine (EMIC) at a crosshead speed of 0.5 mm/min. The mean values of bond strength (kgf) and standard deviation were G1- 29.163 ± 7.123; G2- 37.752 ±13.054. Statistical analysis (Students t-test; á=0.05 showed no statistically significant difference (p<0.05) between the groups. Adhesive bonding failures between resin cement and root canal dentin surface were observed in both groups, with non-polymerized resin cement in the apical portion of the post space when Single Bond was used (G1). The type of adhesive system employed on the fiber post cementation did not influence the pull-out bond strength.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tensile Strength
/
Post and Core Technique
/
Dentin-Bonding Agents
/
Dental Pins
Limits:
Humans
Language:
English
Journal:
J. appl. oral sci
Journal subject:
Dentistry
Year:
2008
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
University of Sacred Heart/BR
/
University of São Paulo/BR
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