口腔疾病防治2017，Vol.25Issue(2)：93-96,4.DOI:10.12016/j.issn.2096-1456.2017.02.005
纳米羟基磷灰石对托槽粘接剂抗菌性及粘接强度的影响
Antibacterial effects and tensile bonding strength of orthodontic adhesive containing nanohydroxyapatite
摘要
Abstract
Objective To evaluate the tensile bonding strength (TBS) and antibacterial properties when an orthodon⁃tic adhesive was added with nanohydroxyapatite (nHAp). Methods Light cure orthodontic adhesive (Grengloo) was blended with 2%TiO2 containing nHAp nanoparticles by 0%、10%、20%、30%(w/w), while the control was not blended with nHAp. Brackets were bonded to extracted premolars by these new adhesives. TBS of 5groups were determined, and the adhesive remnant index (ARI) scores were assessed. Composite discs specimen were prepared, incubated with bacte⁃rial suspension for 48 h, and tested for antibacterial properties. Results No significant difference was found in ARI. The colony unit counts and lactate productionof the groups containing 2%TiO2 were significantly reduced. The colony unit counts and lactate production were without relationship with nHAp. The tensile bonding strength drastically de⁃creased when containing more than 10%nHAp. Conclusion nHAp might not enhance the antibacterial effects of Gren⁃gloo.关键词
纳米羟基磷灰石/二氧化钛/托槽粘接剂/抗菌性/拉伸粘接强度Key words
Nanohydroxyapatite/TiO2/Orthodontic adhesive/Antibacterial/Tensile bonding strength分类
医药卫生引用本文复制引用
李振霞,陈婷婷,李沛霖,薛晶,张强..纳米羟基磷灰石对托槽粘接剂抗菌性及粘接强度的影响[J].口腔疾病防治,2017,25(2):93-96,4.基金项目
深圳市科技基金 （）
