El-Wassefy Noha A
Dental Biomaterials Department, Faculty of Dentistry, Mansoura University.
Dent Mater J. 2017 Mar 31;36(2):157-167. doi: 10.4012/dmj.2016-219. Epub 2017 Jan 20.
This study investigated the combining effect of cold plasma and bioglass-phosphoric acid paste on demineralized enamel. Fifty bovine incisors' enamel specimens were challenged by a demineralization solution of pH 4.47 for 72 h. Specimens were divided into five groups: (I) Control, demineralized enamel (C); (II) Demineralized enamel treated with fluoride varnish (F); (III) Cold plasma application to demineralized enamel (P); (IV) Demineralized enamel treated with bioglass paste (B); (V) Application of bioglass paste to cold plasma-treated demineralized enamel (PB). Specimens were then immersed in remineralizing solution for 24 h, before being examined with micro-computed tomography (micro-CT), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and cross-sectional micro-hardness measurement. The results showed that; treating demineralized enamel with cold plasmas before bioglass application ensued a significant high mineral volume recovery and micro-hardness of demineralized region. It can be concluded that cold plasmas may improve the remineralization of bioglass on demineralized enamel.
本研究调查了冷等离子体与生物玻璃 - 磷酸糊剂对脱矿釉质的联合作用。五十个牛切牙釉质标本用pH 4.47的脱矿溶液处理72小时。标本分为五组：（I）对照组，脱矿釉质（C）；（II）用氟化物清漆处理的脱矿釉质（F）；（III）对脱矿釉质应用冷等离子体（P）；（IV）用生物玻璃糊剂处理的脱矿釉质（B）；（V）对经冷等离子体处理的脱矿釉质应用生物玻璃糊剂（PB）。然后将标本浸入再矿化溶液中24小时，之后用微计算机断层扫描（micro-CT）、扫描电子显微镜（SEM）、能量色散X射线光谱（EDS）和横截面显微硬度测量进行检查。结果表明；在应用生物玻璃之前先用冷等离子体处理脱矿釉质，可使脱矿区域的矿物质体积回收率和显微硬度显著提高。可以得出结论，冷等离子体可能会改善生物玻璃对脱矿釉质的再矿化作用。
