Impact of Preparation Designs and Distinct restorations on Marginal Precession, and Fracture Resistance of CAD/CAM Fabricated Endocrowns in Pulpally Treated Deciduous Molars | ||||
| Al-Azhar Assiut Dental Journal | ||||
| Volume 8, Issue 1, April 2025, Page 71-86 PDF (4.46 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/aadj.2025.350205.1200 | ||||
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| Authors | ||||
AHMED BASTAWY MOHAMED  1; REHAM AHMED ELNEMR 2; mahmoud abdallah mekky 3
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| 1PEDIATRIC DENTISTRY and DENTAL PUBLIC HEAKTH,FACULTY Of ORAL and DENTAL MEDICINE, SOUTH VALLEY UNIVERSITY | ||||
| 2pediatric dentistry, suez canal university, Ismailia, Egypt | ||||
| 3fixed prosthodontics, faculty of oral and dental medicine, south valley university, Qena, Egypt. | ||||
| Abstract | ||||
| Aim: This study aimed to evaluate the impact of preparation designs and distinct restorations on marginal Precession, and fracture resistance of CAD/CAM fabricated endocrowns in pulpally treated Deciduous molars. Subjects and Methods: in-vitro experimental study involved 60 primary molar teeth, which underwent pulpotomy and standardized endo crown preparation. The utilized teeth were split into 6 groups by random method (10 teeth/group) depending on the restorative material used G 1: sound primary molars, G 2: pulpotomized primary molars with no coronal restoration, G 3: restored with Beautifil Flow Plus X, G 4: restored with CAD/CAM Milled Poly-methyl methacrylate., Group 5: restored using lithium disilicate endocrown. G 6: restored by CAD/CAM Milled dental zirconia block. All samples were exposed to fracture testing using a universal testing machine with compressive power applied. Results: in regard to Fracture resistance, half depth: Zirconia had the greatest mean value, then Composite, E. max, and the PMMA group. All groups were statistically significant. Complete depth: Zirconia had the greatest mean value, which was followed by the PMMA group, Composite, and E. max. One-third of the samples in the zirconia group displayed a good fracture, while 33.3% of the samples in the E-max group revealed a fractured tooth and restoration. Conclusion: Within the parameters of this investigation, our work implies that teeth treated with a pulpotomy may, therefore, be restored using endocrowns. The zirconia showed higher fracture resistance than composite, PMMA and lithium disilicate endocrowns. Marginal gap is higher in PMMA than other material. | ||||
| Keywords | ||||
| Endocrowns; pulpotomized primary molars; fracture resistance; CAD-CAM zirconia block; Lithium disilicate | ||||
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