Effect of Tooth Desensitizer on Fracture Resistance of Porcelain Laminated Veneer
Keywords:
Glutaraldehyde, Fracture resistance, Dental veneerAbstract
Background: Usually, tooth preparation for dental veneer restorations at anterior teeth are limited within enamel. In some cases require extensive tooth preparation that may expose to dentin, such as severe tooth discoloration and misaligned teeth. Tooth preparation with dentin exposure can cause decreasing retention and dentin hypersensitivity. Nowadays, glutaraldehyde is the effective desensitizer. Many studies found the influence of glutaraldehyde on adhesive system. Objective: The purpose of this study was to compare fracture resistance of porcelain laminated veneer after using resin cement application with using glutaraldehyde desensitizer and resin cement application. Method: 20 sound upper premolars were selected. Teeth were randomly divided into two groups (n= 10). Test group were prepared with glutaraldehyde desensitizer (Gluma Desensitizer®) before resin cement application (RelyX ® Veneer TR). Control group were applied only resin cement. Determination of tooth preparation was in enamel but the cervical 1/3 of crown was in dentin. Depth of preparation was qualified by CBCT scan (Orthophos S 3D, Sirona®). After tooth preparation, teeth scanning and dental veneer design were performed by 3Shape Trios3® and 3Shape dental system 2019 Program respectively. The lithium disilicate glass‑ceramic (IPS e.max® CAD) were selected. Dental veneer were fabricated by CORiTEC ONE (imes-icore®). 10,000 cycles of thermocycling was performed in all specimens. Fracture resistance of porcelain laminated veneers were evaluated by universal testing machine (Intron 5566). Statistical analysis were conducted using independent t-test (p < 0.05). Result: There are no statistical difference in fracture resistance value between control group (1793.48 ± 140.39 N) and test group (2237.47 ± 207.28 N) (p <0.05). Conclusion: Using glutaraldehyde desensitizer before resin cement application did not affect the fracture resistance of porcelain laminated veneer when compare with no using glutaraldehyde desensitizer before resin cement application.
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