the bond strength of nanohybrid and nanoceramic composites to feldspathic porcelain

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ID: 238925
2017
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Abstract
Background: Porcelain fracture is the most important problem in fixed prosthetic restorations. The replacement of fractured restoraions isn't often prefer by patients and dentists. Intraoral repair of fractured porcelain is a big alternative for patient and dentist. For this reason, dentists try to improve different surface treatments to increase the bond strength between porcelain and repair materials such as composite resins. Aims: The aim of this study was to evaluate the shear bond strength (SBS) of nano-hybrid (Nh.com) and nano-ceramic composite resins (Nc.com) to this feldspathic porcelains (Vita and Ivoclar). Settings and Design: 120 ceramic disc were fabricated from feldspathic porcelain. Materials and Methods: The following surface treatment was applied on the ceramic surface: 1) Hydrofluoric acid+silane, 2) Air-abrasion+silane, 3) Air-abrasion=Control group. Nh.com and Nc.com was placed on the porcelain surface. Half of the specimens were stored in 37 ± 2oC distilled water and another half were subjected to thermocycling before SBS. The samples placed in an universal testing machine and applied shear force until seperation occured. Statistical analysis used: The data were analyzed by multi-way analysis of variance (ANOVA) and Duncan test (P<0.05). Results: The results show that Ivoclar and Vita had almost equal fracture values. Nh.com showed high bond strength than Nc.com. In the Ivoclar porcelain, hydrofluoric acid etching had highest fracture values than other surface treatments, and in the vita porcelain air-abrasion had a little difference from hydrofluoric acid etching. Conclusions: Different surface treatments show different effect on SBS between feldspathic porcelain and composite resins.
Reference Key
zdemir2017contemporarythe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Hatice Özdemir;Nuran Dinçkal Yanikoglu
Journal biomedical sciences instrumentation
Year 2017
DOI
10.4103/ccd.ccd_504_17
URL
http://www.contempclindent.org/article.asp?issn=0976-237X;year=2017;volume=8;issue=4;spage=558;epage=564;aulast=Özdemir
Keywords
bond strength composite

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