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Comparison Between Bio-star Sheets and Heat Cured Acrylic Resin in terms of Surface Hardness and Surface Roughness | ||
| Tikrit Journal for Dental Sciences | ||
| Volume 13, Issue 2, December 2025, Pages 375-383 PDF (534.57 K) | ||
| DOI: 10.25130/tjds.13.2.9 | ||
| Author | ||
| Mohammad Abdulsattar AlSeqar | ||
| Department of Dental Technology, College of Health & Medical Technology, Baghdad, Middle Technical University, Baghdad, Iraq. | ||
| Abstract | ||
| Introduction: Duran foil is a type of bio-star foils which utilized in splint therapy as a supernumerary material to acrylic resins. Prosthodontists frequently wish to fabricate and deliver a splint shortly instead of having them made up in a dental lab whentreating patients with tempromandibular joint disorders. Aims: compare the hardness and roughness of bio-star sheets and acrylic resins after immersion in tea, coffee, and Pepsi for 15 days. Materials and methods 80 samples were fabricated in total. 40 acrylic samples constructed using plastic patterns (65mm length X 10 width X 2.5mm thickness). The other 40 were made from Duran sheets using a bio-star device. Then samples were immersed in coffee, tea and Pepsi for 15 days. Surface hardness and roughness tests were conducted using a shore D hardness tester and TR220 portable roughness tester. Data were analyzed using SPSS v 24 and comparisons were made using ANOVA and Tukey tests. Results: there was an increase in the roughness of acrylic groups compared to bio-star groups. The ANOVA test revealed significant differences (P <0.05) among groups. Regarding hardness, there was an increase in the hardness of acrylic in comparison to bio-star groups. Furthermore, ANOVA test showed significant differences (P <0.05) among groups. Conclusion: Acrylic samples had a higher hardness than bio-star samples. Acrylic samples had a rougher surface than bi-ostar. Acrylic resins are considered the preferred material for removable orthodontic retainers because of their outstanding mechanical properties. It is recommended to assess other mechanical properties such as tensile strength. | ||
| Keywords | ||
| acrylic resins, bio-star sheets, hardness; surface roughness | ||
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