Nazanin Daneshpoor1, Leila Pishevar2. 1. Restorative dentistry specialist. 2. Department of operative dentistry, faculty of dentistry, Isfahan (khorasgan) branch, Islamic Azad university, Isfahan, Iran.
Abstract
BACKGROUND: This study was designed to quantitatively compare the presence of apatite peaks on demineralized dentin to induced bio-mimetically by bioactive commercial materials. MATERIAL AND METHODS: Dentin slice specimens (n=6) were prepared and demineralized by by17% EDTA for 2 hours. Each disks materials (Theracal, Biodentine, CPP-ACP) were freshly prepared and was maintained in close contact with a demineralized dentin specimen immersed in PBS solution during one week. To evaluation of bioactivity, cements disks (n=6) were prepared from each material and immersed in PBS solution for one week. The bioactivity and remineralization ability was evaluated using FTIR spectroscopy and Scanning Electron Microscopy. The Ca/P ratio of the surface of dentin and cements disks were compared with one -way ANOVA, independent T test and Duncan test (α=0.05). RESULTS: Ca/P weight ratio of Biodentine (187.5) was significantly higher than Theracal (10.10) and Theracal higher than CPP-ACP (0.37) (P=0.008). Demineralized dentin in contact with Test materials, indicated Ca and P peak after 7 days, but not showed statistically differences between the groups (P=0.08). CONCLUSIONS: The outcome revealed that bioactive cements and CPP-ACP had bioactivity capability during one week. Biodentine had higher bioactivity between others. Demineralized dentin could be remineralized with bioactive materials. Key words:Bioactive, cements, fourier transform infrared spectroscopy, scanning electron microscopy, tooth remineralization. Copyright:
BACKGROUND: This study was designed to quantitatively compare the presence of apatite peaks on demineralized dentin to induced bio-mimetically by bioactive commercial materials. MATERIAL AND METHODS: Dentin slice specimens (n=6) were prepared and demineralized by by17% EDTA for 2 hours. Each disks materials (Theracal, Biodentine, CPP-ACP) were freshly prepared and was maintained in close contact with a demineralized dentin specimen immersed in PBS solution during one week. To evaluation of bioactivity, cements disks (n=6) were prepared from each material and immersed in PBS solution for one week. The bioactivity and remineralization ability was evaluated using FTIR spectroscopy and Scanning Electron Microscopy. The Ca/P ratio of the surface of dentin and cements disks were compared with one -way ANOVA, independent T test and Duncan test (α=0.05). RESULTS: Ca/P weight ratio of Biodentine (187.5) was significantly higher than Theracal (10.10) and Theracal higher than CPP-ACP (0.37) (P=0.008). Demineralized dentin in contact with Test materials, indicated Ca and P peak after 7 days, but not showed statistically differences between the groups (P=0.08). CONCLUSIONS: The outcome revealed that bioactive cements and CPP-ACP had bioactivity capability during one week. Biodentine had higher bioactivity between others. Demineralized dentin could be remineralized with bioactive materials. Key words:Bioactive, cements, fourier transform infrared spectroscopy, scanning electron microscopy, tooth remineralization. Copyright:
Authors: Hanan Al Zraikat; Joseph E A Palamara; Harold H Messer; Michael F Burrow; Eric C Reynolds Journal: Dent Mater Date: 2010-11-18 Impact factor: 5.304
Authors: Maria Giovanna Gandolfi; Paola Taddei; Francesco Siboni; Enrico Modena; Elettra Dorigo De Stefano; Carlo Prati Journal: Dent Mater Date: 2011-08-15 Impact factor: 5.304
Authors: Irene Shuping Zhao; May Lei Mei; Zhuo Long Zhou; Michael Francis Burrow; Edward Chin-Man Lo; Chun-Hung Chu Journal: Int J Mol Sci Date: 2017-08-07 Impact factor: 5.923