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VOLUME 6 , ISSUE 1 ( January-April, 2018 ) > List of Articles

Original Article

Effect of Various Surface Treatments on Push-out Strength of Glass Fiber Posts–An In Vitro Study

Navjot Kaur, Manjit Kumar, Amrit Khosla, Ritu Batra, Sumit Katoch

Keywords : glass fiber post, sand blasting, hydrofluoric acid, phosphoric acid, silane coupling agent, push-out test, coronal, middle and apical level

Citation Information : Kaur N, Kumar M, Khosla A, Batra R, Katoch S. Effect of Various Surface Treatments on Push-out Strength of Glass Fiber Posts–An In Vitro Study. 2018; 6 (1):28-33.

DOI: 10.1055/s-0038-1673571

License: CC BY-NC-ND 4.0

Published Online: 01-10-2018

Copyright Statement:  © 2018 Bhojia Dental College and Hospital affiliated to Himachal Pardesh University


Abstract

Aim The aim of this study was to investigate push-out bond strength of glass fiber posts after various surface treatments and to investigate push-out bond strength at different levels of root (coronal, middle, apical). Materials and Methods Forty extracted teeth were selected for study (maxillary anteriors and mandibular premolars). Roots were sectioned 16 mm from apex, endodontically treated and divided into four groups of 10 each based on surface treatment of posts; Group I (Control Group): No treatment of the post, Group II: Post surface were sandblasted and then treatment with silane coupling agent, Group III: Hydrofluoric acid application on the post surface and then treatment with silane coupling agent, Group IV: Post surface treated with 37% phosphoric acid treatment for 1 minute. Posts after various surface treatments were luted. Roots were then cut into three sections coronal, middle, and apical. The push-out test was done to assess push-out bond strength. The data obtained were statistically analyzed. Results Hydrofluoric acid and silane coupling agent treatment had little effect on the bond strength of post. Sandblasting and silane coupling agent was proven to be more effective and improved push-out strength of glass fiber posts followed by phosphoric acid group. Conclusion It was concluded that sandblasting followed by silane coupling agent showed highest bond strength in all parts of the root compared with other surface treatments. Highest push-out strength was found at the coronal level of the root followed by middle and apical level.


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