Onwubu Stanley Chibuzor, Mdluli Phumlane Selby, Singh Shenuka, Bharuth Vishal
Department of Dental Sciences, Durban University of Technology, Durban, South Africa.
Department of Chemistry, Durban University of Technology, Durban, South Africa.
Eur J Dent. 2019 May;13(2):187-192. doi: 10.1055/s-0039-1695662. Epub 2019 Sep 15.
This article reports the remineralization potential of a modified eggshell-titanium dioxide (EB-TiO) composite in the management of DH.
The prepared composite was further characterized using different techniques such as Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and field scanning electron microscopy (FSEM) to establish the modification. Forty freshly extracted bovine anterior teeth were used to evaluate the dentin tubule remineralization potential of EB-TiO. Each tooth was sectioned mesiodistally to obtain dentin blocks. The dentin blocks were subsequently agitated in 4% wt. citric acid for 2 minutes to simulate sensitive tooth. Each dentin block was randomly assigned to five groups, namely Group 1: untreated, Group 2: EB alone, Group 3: EB-TiO treated, and Group 4: Colgate Sensitive, and Group 5: Sensodyne treated ( = 8) that were then subjected to remineralization protocol.
Both the XRD and FTIR images confirm the surface medication of EB-TiO. The TEM revealed a nonhomogeneous structure with an average particle size of 65 nm. FSEM further was used to observe the remineralization capabilities of the samples. The FSEM image of the dentin specimens treated with EB-TiO shows complete remineralization of the dentin tubules, which remain intact postacidic exposure.
This study confirmed that EB-TiO composite effectively remineralizes dentin tubules. More so, the composite could be a cheaper and more efficient therapy material in the management of DH.
本文报道一种改性蛋壳 - 二氧化钛（EB - TiO）复合材料在治疗牙本质过敏症（DH）方面的再矿化潜力。
使用傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、透射电子显微镜（TEM）和场扫描电子显微镜（FSEM）等不同技术对制备的复合材料进行进一步表征，以确定其改性情况。使用40颗新鲜拔除的牛前牙评估EB - TiO对牙本质小管的再矿化潜力。将每颗牙齿沿近远中方向切片以获得牙本质块。随后将牙本质块在4%重量的柠檬酸中搅拌2分钟以模拟敏感牙齿。将每个牙本质块随机分为五组，即第1组：未处理组，第2组：仅EB组，第3组：EB - TiO处理组，第4组：高露洁敏感牙膏组，第5组：舒适达处理组（每组n = 8），然后进行再矿化方案。
XRD和FTIR图像均证实了EB - TiO的表面改性。TEM显示其结构不均匀，平均粒径为65 nm。进一步使用FSEM观察样品的再矿化能力。用EB - TiO处理的牙本质标本的FSEM图像显示牙本质小管完全再矿化，在酸性暴露后仍保持完整。
本研究证实EB - TiO复合材料能有效使牙本质小管再矿化。此外，该复合材料在治疗牙本质过敏症方面可能是一种更便宜且更有效的治疗材料。
