Fracture Resistance of Occlusal Veneer on Premolar Teeth Using Two Different Preparation Designs | ||||
| Al-Azhar Assiut Dental Journal | ||||
| Volume 8, Issue 1, April 2025, Page 59-70 PDF (2.03 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/aadj.2025.430329 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ali Sayed Ali   1; Mahmoud Abdallah Mohammed Mekkey2; Ahmed Bastawy3
| ||||
| 1Dental Materials department.Assiut University,Assiut City | ||||
| 2Department of Fixed prosth odontics ,Faculty of Oral and Dental Medicine South Valley University | ||||
| 3Department of Pediatric den tistry and dental public health, Faculty of Oral and dental med icine, South Valley University, Qena, Egypt | ||||
| Abstract | ||||
| Aim: The purpose of this study was to investigate the fracture resistance and marginal gap of two different designs of occlusal veneers made of two different ceramic materials. Subjects and methods: In this study, sixty recently extracted maxillary premolars were utilized. Two groups of teeth were randomly selected based on the type of occlusal veneer material (n =30 each). The teeth in the first group were fixed using occlusal veneers made of advanced Lithium Disilicate (CEREC Tessera™, Dentsply Sirona, Germany)(T), whereas the polymer-infiltrated hybrid ceramic was used for the occlusal veneer in the second group. (Vita Enamic, Vita Zahnfabrik, Germany) (E). Each group was further subdivided into 2 subgroups (n =15 each) according to the preparation design. Traditional occlusal reduction was used to prepare the teeth in the f irst subgroup. (planner preparation)(P). In the second subgroup, the reduction of teeth included the occlusal surface and 1 mm axial reduction with rounded shoulder finish line (modified = M). The veneers were designed and manufactured using CAD/CAD technology. A universal testing machine was used to measure the fracture resistance. A single static compressive load was applied to each restoration along the tooth’s long axis until fracture occurred. A single static compressive load was applied to each restoration along the tooth’s long axis until fracture occurred. Results: The findings demonstrated that there was a statistically significant difference in the fracture resistance of the two preparation designs of the two materials. (P≤ 0.05), the subgroups of CEREC Tessera™, recorded, higher significant difference than Enamic in the two preparations. The results of the statistical tests demonstrated that the relationship between the preparation designs and materials, found to have a substantial impact on the fracture resistance difference. Conclusions: CEREC Tessera had a fracture resistance that gave better values, qualitatively and quantitatively. | ||||
| Keywords | ||||
| Fracture Resistance; Occlusal Veneer; Premolar Teeth; Preparation designs; ceramic materials | ||||
|
Statistics Article View: 102 PDF Download: 81 |
||||
