Influence Of Two Intrapulpal Depths On Fracture Resistance Of Endocrowns Restoring Maxillary Premolar Teeth Using Zirconia Reinforced Lithium Disilicate (In Vitro study) | ||
| Egyptian Dental Journal | ||
| Volume 70, Issue 1 - Serial Number 4, January 2024, Pages 421-426 PDF (478.27 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/edj.2023.198133.2474 | ||
| Authors | ||
| Khaled Yehia Mahgoub* 1; Tarek Salah el din Morsi2; Ahmed Khaled Abofadle3; Rafik K.G Mina4 | ||
| 1B.D.S,M.Sc (Ain Shams University) | ||
| 2Chairman of Fixed Prosthodontics department, Faculty of Dentistry, Ain Shams University | ||
| 3Assistant Professor of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University | ||
| 4Lecturer and Member in the Egyptian Military Medical Academy | ||
| Abstract | ||
| Purpose: This study was conducted to evaluate the effect of two different preparation extensions (4mm,6mm) On fracture resistance of endo-crowns restoring Maxillary premolar teeth using Zirconia Reinforced Lithium Disilicate (Vita Suprinity). Materials and methods: 14 sound premolars were assigned to two groups (n=14), Group A (4 mm extension into the pulp chamber), Group B (6 mm extension intrapulpally). All premolars were decoronated to be 3 mm above the CEJ Proximally. After cementation, fracture resistance test was performed. Data was collected and statistically analyzed.. Results: There was a significant difference between samples regarding different depths of preparation extension were the highest value of fracture resistance was found in samples with 6 mm extension depth (2419.14±733.46) followed by samples with 4 mm depth (1961.71±659.89). Conclusion: From the results obtained from this study, it could be concluded that endodontically treated premolars can be restored with endocrowns, moreover, the increase of the preparation depth of the endocrowns showed a massive increase in fracture resistance | ||
| Keywords | ||
| Endocrowns; Premolars; Suprinity | ||
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