Effect of Immediate Dentin Sealing on the Fracture Resistance of Lithium Disilicate Onlay Restoration
Author(s): Mohammed Alostaz*, Abdulrahman Alsaad, Talal Alshugair, Ibrahim Almadani, Abdulrahman Samir and Mohammad Alsowail
Abstract
Background: Immediate Dentin Sealing (IDS) is sealing the dentin using nano-hybrid composite after the cavity preparation and before taking the impression. The clinical advantages of the IDS are superior bond strength, less gap formation and bacterial leakage, and decreased dentin sensitivity. Materials and methods: Twenty-eight human extracted first lower molar teeth were divided randomly into two groups. Teeth received root canal treatment. The control group (n=14), the orifices were closed by nano-hybrid composite and teeth were prepared. 2nd group (n=14), immediate dentin sealing was applied by nano-hybrid composite, onlay preparation. Teeth were sent to the laboratory to study the fracture resistance and the mode of fracture under a static force. Results: Independent t-test was done to compare between IDS and non-IDS onlays. The difference between two groups was not statistically significant (p-value: 0.851), whereas the mean difference is -.288 and standard error difference is 1.515. Conclusion: The use of IDS has no additional effect on the fracture resistance in teeth restored by lithium disilicate onlays.