Demineralization of caries-affected transparent dentin by citric acid: an atomic force microscopy study.
Demineralization of caries-affected transparent dentin by citric acid: an atomic force microscopy study.
复制标题
柠檬酸对受龋齿影响的透明牙本质进行脱矿质：原子力显微镜研究。
DOI：
10.1016/s0109-5641(00)00056-7
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Marshall,SJ
中科院分区：
文献类型：
--
作者：
MarshallJr,GW;Chang,YJ;Gansky,SA;Marshall,SJ
ObjectivesThis study determined recession rates of peritubular dentin and intertubular dentin in citric acid solution（0.018M，pH=2.5）for caries-affected transmitting dentin，one of the major components of dentin substrate as altered by caries，with comparisons made with non-carious dentin.MethodsTransparent dentin was identified by sagittally sectioning five obviously carious teeth.然后垂直于牙本质小管的路线通过透明牙本质区域切割切片。抛光牙本质样品的透明牙本质和非龋牙本质的制备与内部参考层和柠檬酸蚀刻在原子力显微镜（AFM）在特定的时间间隔进行了研究。结果在基线，透明牙本质被确定为牙本质小管，在很大程度上闭塞的矿物沉积物，蚀刻被证明是耐酸。管周牙本质随着时间的推移快速且线性地蚀刻，直到它不再能够被测量，从而产生无法与正常牙本质区分的透明牙本质的蚀刻速率。正常和透明的管间牙本质表面开始以几乎相同的速率蚀刻，但随后表面凹陷稳定后，小于1μm的深度变化为dentintype.SignificanceMost以前的研究都集中在脱矿和粘结到正常dentin. Almost粘结程序涉及改变的牙本质基质，如那些改性的龋齿。在这项研究中，管周和管间牙本质从正常和龋影响的牙本质表现出类似的行为。其主要区别是透明牙本质中大部分小管管腔内存在耐酸矿物。
ObjectivesThis study determined recession rates of peritubular dentin and intertubular dentin in citric acid solution (0.018M, pH=2.5) for caries-affected transparent dentin, one of the major components of dentin substrate as altered by caries, with comparisons made with non-carious dentin.MethodsTransparent dentin was identified by sagittally sectioning five obviously carious teeth. Sections were then cut through the transparent dentin area perpendicular to the course of the dentinal tubules. Polished dentin samples of the transparent dentin and non-carious dentin were prepared with an internal reference layer and studied at specific intervals for citric acid etching in an atomic force microscope (AFM).ResultsAt baseline, transparent dentin was identified by dentinal tubules that were largely occluded with mineral deposits that on etching proved to be acid resistant. Peritubular dentin etched rapidly and linearly over time until it could no longer be measured, yielding etching rates for transparent dentin that could not be distinguished from normal dentin. The normal and transparent intertubular dentin surfaces began etching at nearly the same rate, but then surface recession stabilized after less than 1μm depth change for both dentin types.SignificanceMost previous studies have focused on demineralization and bonding to normal dentin, although many bonding procedures involve altered dentin substrates, such as those modified by caries. In this study, peritubular and intertubular dentin from normal and caries-affected dentin exhibited similar behavior. The major difference was the presence of acid resistant mineral in most of tubule lumens in the transparent dentin.
登录
查看更多内容
口腔病理学教材
DOI：
--
发表时间：
1974
期刊：
影响因子：
--
作者：
W. G. Shafer;M. K. Hine;B. Levy
通讯作者：
B. Levy
一种简单的无痛粘合修复系统，通过最小程度的减少和完全蚀刻
DOI：
--
发表时间：
1994
期刊：
影响因子：
--
作者：
N. Wilson
通讯作者：
N. Wilson
扫描探针显微镜。
DOI：
--
发表时间：
1992
期刊：
Scanning microscopy
影响因子：
--
作者：
J. Jahanmir;B. G. Haggar;J. B. Hayes
通讯作者：
J. B. Hayes
牙本质粘合剂与牙齿硬组织相互作用的原子力显微镜研究。
DOI：
--
发表时间：
1994
期刊：
Journal of Biomedical Materials Research
影响因子：
--
作者：
C. Cassinelli;M. Morra
通讯作者：
M. Morra
影响因子：
3
作者：
Kinney, JH;Balooch, M;Weihs, TP
通讯作者：
Weihs, TP