Mount G J, Hume W R
University of Adelaide.
Aust Dent J. 1998 Jun;43(3):153-9. doi: 10.1111/j.1834-7819.1998.tb00156.x.
With the development of adhesive restorative materials and a far better understanding of the action of the fluoride ion it is suggested that the time has arrived for a reassessment of the traditional cavity classification as set out by G.V. Black over one hundred years ago. When preventive measures and remineralization fail and a carious lesion has progressed through the enamel into the dentine there is a need to remove the infected dentine, and possibly some of the affected dentine as well, to eliminate cavitation and avoid further accumulation of plaque. In most situations this will involve removal of enamel to achieve access to the infected dentine but, in the presence of fluoride, both enamel and dentine are capable of being remineralized and therefore conserved, at least to a degree. The principle of minimal extension must be encouraged to allow maximum preservation of natural tooth structure. A new cavity classification is proposed which is designed to make the most of the potential for healing which is inherent in both enamel and dentine. However, it must be accepted that a considerable proportion of restorative dentistry is carried out to replace failed restorations and, in this case, cavity design will be complicated by existing loss of tooth structure.
随着粘结修复材料的发展以及对氟离子作用的更深入了解，有人认为现在是时候重新评估G.V. 布莱克在一百多年前提出的传统洞型分类了。当预防措施和再矿化失效，龋损已从釉质进展到牙本质时，需要去除感染的牙本质，可能还需要去除一些受影响的牙本质，以消除空洞并避免菌斑进一步积聚。在大多数情况下，这将涉及去除釉质以进入感染的牙本质，但在有氟的情况下，釉质和牙本质都能够再矿化并因此得以保存，至少在一定程度上是这样。必须鼓励最小扩展原则，以最大程度地保留天然牙体结构。本文提出了一种新的洞型分类，旨在充分利用釉质和牙本质固有的愈合潜力。然而，必须承认，相当一部分修复牙科是为了替换失败的修复体而进行的，在这种情况下，洞型设计会因现有的牙体结构丧失而变得复杂。
