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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of the interfacial area measurement parameters on the push-out strength between fiber post and dentin

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Author(s):
Bergoli, Cesar Dalmolin [1] ; da Costa Lima, Julia Magalhaes [1] ; de Melo, Renata Marques [1] ; Bottino, Marco Antonio [2] ; Valandro, Luiz Felipe [3]
Total Authors: 5
Affiliation:
[1] Sao Paulo State Univ UNESP, Sao Jose Campos Dent Sch, BR-12245000 Sao Paulo - Brazil
[2] Sao Paulo State Univ UNESP, Sao Jose Campos Dent Sch, Dept Dent Mat & Prosthodont, BR-12245000 Sao Paulo - Brazil
[3] Univ Fed Santa Maria, Fac Odontol, Prosthodont Unit, BR-97015372 Santa Maria, RS - Brazil
Total Affiliations: 3
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES; v. 50, p. 7-10, APR 2014.
Web of Science Citations: 2
Abstract

Purpose: To verify the influence of different instruments and operators on the bonding interfacial area and on the push-out bond strength values. Material and methods: Fifteen anterior human teeth (n=15) were selected, cleaned and standardized to 15 mm length. Root canals were prepared in 12 mm and the fiber posts were cemented using the RelyX U-100 cement. Three slices were obtained per tooth (N=45) and submitted to the push-out bond strength test. The bonding interfacial area (mm(2)) of each specimen was calculated based on the disc slice dimensions: coronal and apical diameter and height. The bonding area of each specimen was used to calculate the bond strength (Mpa). The dimensions were analyzed by different operators, using two instruments: G1 - Operator A with a digital caliper; G2 - Operator A with a stereomicroscope; G3 - Operator B with a digital caliper; G4 - Operator B with a digital stereomicroscope; G5 - Operator C with a digital caliper; G6 - Operator C with a stereomicroscope. The mean area was submitted to inter-operator and intra-operator analyses, while the mean area and mean of bond strength were submitted to the 2-way ANOVA with repeated measures and the Tukey test (alpha=0.05). Results: The inter-operator kappa was 0.83 to the digital caliper and 0.91 to the stereomicroscope, while the intra-operator kappa was 0.76. The operator and the measurement instrument influenced the interfacial bonding area (p=0.000 and p=0.001) and the push-out bond strength values (p=0.000 and p=0.000, respectively) of the disc slices. Conclusion: The final push-out bond strength values are influenced by the measuring instrument and by the measurer operator. (C) 2014 Published by Elsevier Ltd. (AU)

FAPESP's process: 11/09897-8 - Evaluation of factors related to the push-out test between fiber post and root dentin
Grantee:Luiz Felipe Valandro
Support Opportunities: Regular Research Grants