Tensile bond strength of a lithium-disilicate pressed glass ceramic to dentin of different surface treatments

Abstract

The effects of desensitizer, disinfectant, saliva, blood, and hydrogen peroxide on the tensile bond strength between adhesive and ceramic as well as between adhesive and dentin were examined. Sixty 7×3 mm pressed ceramic discs of IPS e.max were fabricated and randomly assigned to six groups of different dentin surface treatments (control, desensitizer, disinfectant, saliva, blood, and hydrogen peroxide). Representative samples of fractured specimens were observed by SEM (scanning electron microscopy). There were significant differences between the control group and saliva, blood, and hydrogen peroxide groups (p<0.05). However, there were no significant differences between any other dentin surface treatment groups (p>0.05). Results of this study suggested that only saliva, blood, and hydrogen peroxide influenced the tensile bond strength between dentin and ceramic.

Effect of ‘Try-in’ paste removal method on bond strength to lithium disilicate ceramic

“…Therefore, the indication of laminated ceramics reinforced with lithium disilicate may be indicated for cosmetic restorative procedures. [8][9][10] Adhesive cementation systems have been considered the best option for luting ceramic restorations and the application of low viscosity resins on prepared teeth has demonstrated good biomechanical behaviour, particularly with ceramic restorations. 2,[11][12][13] Nevertheless, with the advent of more conservative preparations, the cement shade has a direct influence on the end result of a restoration.…”

Do blood contamination and haemostatic agents affect microtensile bond strength of dual cured resin cement to dentin?

“…Contemporary restorative dentistry places a certain emphasis on adhesion and resin cements because of all-ceramic restorations becoming increasingly popular 34 . Long-term survival of all-ceramic restorations depends on the success of a durable bonding between ceramic, adhesive cement and dentin 8 .…”

Bonding of Resin Materials to All-Ceramics: A Review

“…Contaminations, such as saliva, blood and hydrogen peroxide, influenced the bonding between dentin and lithium disilicate ceramics, while desensitize and disinfectant had no negative effects on the bond strengths (Zortuk et al, 2010). Among 4 different cleaning methods (etching with 37% phosphoric acid, etching 5% hydrofluoric acid, 96% isopropanol, air polishing device with sodium bicarbonate), re-etching with hydrofluoric acid is the most effective in removing lithium duplicates contamination with saliva and/or a silicone disclosing medium (Klosa et al, 2009).…”