Tensile bond strength of acrylic and composite denture teeth to milled CAD/CAM resins | ||||
| Al-Azhar Journal of Dental Science | ||||
| Article 3, Volume 23, Issue 4, October 2020, Page 335-342 PDF (518.25 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajdsm.2020.36330.1086 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ahmed Ezzat Algazar  1; Mohamed Ahmed Helal2; Muhammad Abbas Masoud3; Mostafa Fayad 2
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| 1Dentist at ministry of health and population (Egypt) | ||||
| 2Department of Removable prosthodontics, Faculty of Dental Medicine, Boys, Cairo, Al-Azhar University | ||||
| 3Dental Bio-materials department Faculty of Dental Medicine Boys, Cairo Al-Azhar University | ||||
| Abstract | ||||
| Objective: was to evaluate effect of different surface treatment on tensile bond strength of two different types of artificial teeth to CAD/CAM denture base. Materials and Methods: 160 specimens were fabricated and divided into two main groups according to the denture base material. Group (A) for conventional denture base (HCAR denture base) and Group (B) for CAD/CAM denture base. According to the artificial teeth each group of denture base was subdivided into two subgroups, subgroup (I) for conventional acrylic denture teeth and subgroup (II) for composite resin denture teeth. According to the surface treatment each subgroup of artificial teeth were subdivided into four subgroups as following: Subgroup 1: no surface treatment (control group). Subgroup 2: sandblasting with 250 micron alumina particles. Subgroup 3: roughening with diamond bur. Subgroup 4: specimens were treated by dichloromethane. Results: The results showed that Pre-polymerized CADCAM acrylic resin denture bases specimens exhibited non-significant lower bond strength than HCAR denture base specimens (p>0.05), acrylic resin denture teeth demonstrated higher bond strength to denture bases than composite resin denture teeth (p≤0.05). Conclusion: the Pre-polymerized CADCAM acrylic resin denture bases specimens exhibited non-significant lower bond strength than HCAR denture base specimens, and acrylic resin denture teeth demonstrated higher bond strength to denture bases than composite resin denture teeth, the bond strength of the denture teeth treated with both dichloromethane and sandblasting was improved while the bond strength of the denture teeth treated by roughening with diamond bur was decreased. | ||||
| Keywords | ||||
| CAD/CAM denture base; tensile bond strength; acrylic denture teeth; composite resin denture teeth; surface treatment | ||||
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