TY - JOUR
T1 - Effect of titanium dioxide nanoparticle addition into orthodontic adhesive resin on enamel microhardness
AU - Andriani, A.
AU - Krisnawati, null
AU - Purwanegara, Miesje Karmiati
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/8/30
Y1 - 2017/8/30
N2 - White spots are an early sign of enamel demineralization, which may lead to development of dental caries. Enamel demineralization can be determined by examining the microhardness number of the enamel. Addition of antibacterial agents such as TiO2 nanoparticles into the orthodontic adhesive (TiO2 nanocomposite) is expected to prevent enamel demineralization. The objective of this study is to evaluate the effect of TiO2 nanocomposites in maintaining enamel microhardness around orthodontic brackets. The bracket was bonded to the premolar using Transbond XT (group 1), 1% TiO2 nanocomposites (group 2), and 2% TiO2 nanocomposites (group 3). Group 4 was the control group, and it was not given any treatment prior to the microhardness test. The samples of groups 1, 2, and 3 were soaked in BHI solution containing Streptococcus mutans, and then stored in an incubator at 37°C for 30 days. Demineralizations were determined on cross-sectioned tooth 100μm and 200μm cervical to the bracket by the Vickers microhardness test. The microhardness values were significantly different between every group, with the highest value obtained for control group, followed by the 2% TiO2 nanocomposite group, 1% TiO2 nanocomposite group, and then the Transbond XT group. The results of this study reveal that 2% TiO2 nanocomposites have the ability to maintain enamel microhardness around the orthodontic bracket.
AB - White spots are an early sign of enamel demineralization, which may lead to development of dental caries. Enamel demineralization can be determined by examining the microhardness number of the enamel. Addition of antibacterial agents such as TiO2 nanoparticles into the orthodontic adhesive (TiO2 nanocomposite) is expected to prevent enamel demineralization. The objective of this study is to evaluate the effect of TiO2 nanocomposites in maintaining enamel microhardness around orthodontic brackets. The bracket was bonded to the premolar using Transbond XT (group 1), 1% TiO2 nanocomposites (group 2), and 2% TiO2 nanocomposites (group 3). Group 4 was the control group, and it was not given any treatment prior to the microhardness test. The samples of groups 1, 2, and 3 were soaked in BHI solution containing Streptococcus mutans, and then stored in an incubator at 37°C for 30 days. Demineralizations were determined on cross-sectioned tooth 100μm and 200μm cervical to the bracket by the Vickers microhardness test. The microhardness values were significantly different between every group, with the highest value obtained for control group, followed by the 2% TiO2 nanocomposite group, 1% TiO2 nanocomposite group, and then the Transbond XT group. The results of this study reveal that 2% TiO2 nanocomposites have the ability to maintain enamel microhardness around the orthodontic bracket.
UR - http://www.scopus.com/inward/record.url?scp=85029578343&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/884/1/012115
DO - 10.1088/1742-6596/884/1/012115
M3 - Conference article
AN - SCOPUS:85029578343
SN - 1742-6588
VL - 884
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012115
T2 - 1st Physics and Technologies in Medicine and Dentistry Symposium, PTMDS 2017
Y2 - 15 July 2017 through 16 July 2017
ER -