Nakazawa Yuki, Suzuki Shoichi, Inoue Go, Nikaido Toru, Tagami Junji, Moriyama Keiji
Department of Maxillofacial Orthognathics, Division of Maxillofacial and Neck Reconstruction, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU).
Department of Cariology and Operative Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University (TMDU).
Dent Mater J. 2018 Jul 29;37(4):568-574. doi: 10.4012/dmj.2017-109. Epub 2018 Mar 28.
The purpose of this study was to investigate the formation of acid-base resistant zone (ABRZ) of enamel surface during bracket bonding by using three self-etch adhesives presently available in the orthodontic treatment. Also, the relation between the thickness of the ABRZ and bonding strength, the relation between the thickness of the ABRZ and the concentration of fluoride ions contained in the adhesives, were discussed respectively. The ABRZ was formed with all self-etch orthodontic adhesives. ABRZ thicknesses of two self-etch adhesives were approximately 0.8-1.0 μm, whereas ABRZ thickness of other one was about 0.1 μm. The bond strengths of all self-etch orthodontic adhesives indicated over 10 MPa, and ABRZ thickness observed in the enamel surface seemed to have no influence to the bond strengths among self-etch adhesives. Moreover, the thickness of ABRZ appeared to be associated with the amount of fluoride ion released from the primer.
本研究的目的是通过使用正畸治疗中目前可用的三种自酸蚀粘接剂，研究在托槽粘接过程中牙釉质表面耐酸碱区（ABRZ）的形成情况。此外，还分别讨论了ABRZ厚度与粘接强度之间的关系，以及ABRZ厚度与粘接剂中氟离子浓度之间的关系。所有自酸蚀正畸粘接剂均能形成ABRZ。两种自酸蚀粘接剂的ABRZ厚度约为0.8 - 1.0μm，而另一种的ABRZ厚度约为0.1μm。所有自酸蚀正畸粘接剂的粘接强度均超过10MPa，牙釉质表面观察到的ABRZ厚度似乎对自酸蚀粘接剂之间的粘接强度没有影响。此外，ABRZ的厚度似乎与底漆释放的氟离子量有关。
