Assessment of adding Nano titanium oxide particles on Biomechanical behavior of High- temperature vulcanized Maxillofacial Silicone Elastomers | ||||
Egyptian Dental Journal | ||||
Article 24, Volume 64, Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), October 2018, Page 3761-3769 PDF (398.8 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/edj.2018.79349 | ||||
View on SCiNiTO | ||||
Authors | ||||
Mohamed Y. Abdelfattah1; Mohamed I. Ebrahim2; Mohamed A. Mohamed3 | ||||
1Lecture of Prosthodontics, Prosthodontic Department, Faculty of Dentistry, Tanta University | ||||
2Ass. Prof of Biomaterial, Biomaterial Department, Faculty of Dentistry, Al Azhar University | ||||
3Ass. Prof of Oral Pathology, Oral Pathology Department, Faculty of Dentistry, Al Azhar University | ||||
Abstract | ||||
Objective: This study assessed the influence of titanium oxide nanofiller incorporation into MDX4-4210 maxillofacial silicone regarding biomechanical changes. Methods: Nano titanium oxide powder (P25, Degussa, Germany) was mixed to hightemperature- vulcanized (HTV) silicone (MDX4-4210, Dow Corning, USA) at 0.2 wt%. For testing the cytotoxicity, two groups of silicone specimens, ten specimens each were prepared. Group A: Blank MDX4-4210 silicone (control group); Group B: Nano titanium oxide powder was added to MDX4-4210 silicone; each group was assessed after 24, 48, and 72 hours. For testing mechanical properties 60 specimens were prepared, 20 for testing tear strength, 20 for testing ultimate tensile strength, and 20 for testing hardness. Each group was subdivided into two identical categories: (I) 10 control specimens without nano-titanium oxide, and (II) 10 experimental specimens with nanotitanium oxide powder. The specimens were assessed and one way (ANOVA ) test was utilized to analyze the data. Results: After 24-hour, in the control groups, the cytotoxicity values were higher than those of titanium oxide nanofiller group. There were marked improvements in the mean values of all the tested mechanical properties Conclusion: incorporating nano-titanium oxide particles improves the biocompatibility and mechanical properties of MDX4-4210 maxillofacial silicone materials. | ||||
Keywords | ||||
Cytotoxicity; Mechanical Properties; Silicone maxillofacial material; Nano titanium oxide filler | ||||
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