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- Title
TEMPERATURE RISE DURING THE POLYMERIZATION OF EXPERIMENTAL COMPOSITE MATERIALS FUNCTIONALIZED WITH COPPER-DOPED MESOPOROUS BIOACTIVE GLASS NANOSPHERES.
- Authors
Pavić, Dalibor; Miloš, Manuela; Marovic, Danijela; Boccaccini, Aldo R.; Kai Zheng; Haugen, Havard J.; Tarle, Zrinka; Par, Matej
- Abstract
Aim: To investigate the temperature rise during light-curing of experimental composite materials with the addition of 1-10% copper-doped mesoporous bioactive glass nanospheres (Cu-MBGN). Materials and Methods: Four experimental composite materials containing 1 wt%, 5 wt%, and 10 wt% of Cu-MBGN were prepared. An additional reference material was functionalized with 10 wt% of conventional bioactive glass 45S5. For all experimental materials, inert fillers were added up to a total content of 70 wt%. The composite specimens were light-cured in cylindrical Teflon molds with a thickness of 2 mm and a diameter of 6 mm using a Bluephase PowerCure curing unit (Ivoclar Vivadent, Schaan, Liechtenstein) with a radiant exitance of 1100 mW/cm2. During light-curing, the temperature rise was measured in real-time using a FLIR ETS320 thermographic camera (FLIR, Wilsonville, OR, USA). Results: The maximum temperature values and the time to reach the maximum temperature were determined from the temperature rise curves. The highest temperature increase was measured for the material functionalized with 5% Cu-MBGN (48.8 °C), while the materials with 1% and 10% Cu-MBGN had lower values (47.5-48.1 °C), with no statistically significant differences between the three mentioned values. A significantly lower temperature increase was measured for the material with 10% conventional bioactive glass 45S5 (36.0 °C). The material with 10% Cu-MBGN showed the fastest rise to maximum temperature (6.3 s), while the material with 10% conventional bioactive glass 45S5 showed the slowest temperature rise (12.8 s). Conclusion: Experimental composites functionalized with copper-doped mesoporous bioactive glass nanospheres showed significant temperature rise and reached the maximum temperature during polymerization in a short time. This study was funded by the Croatian Science Foundation (IP-2019-04-6183).
- Subjects
BIOACTIVE glasses; COMPOSITE materials; DOPING agents (Chemistry); INFRARED cameras; POLYMERIZATION
- Publication
Acta Stomatologica Croatica, 2023, Vol 57, Issue 2, p201
- ISSN
0001-7019
- Publication type
Article