van Amerongen J P, Penning C, Kidd E A, ten Cate J M
Department of Cariology and Endodontology, Academic Centre for Dentistry Amsterdam (ACTA), The Netherlands.
Caries Res. 1992;26(2):89-93. doi: 10.1159/000261435.
Many clinicians take for granted that occlusal caries which is just visible as a cavity is extended (deep) into the dentine. This study was aimed at quantifying this opinion. The study was carried out with 60 molars containing small but visible occlusal cavities. After taking bite-wing radiographs the crowns were separated from the roots and embedded. 700-microns sections were cut and glued on plastic sheets. X-ray pictures were taken of the sections which were scored by independent examiners. The bite-wings provided inaccurate estimates of the extent of caries. Radiographs of the sections revealed that about 25% of the molars had caries which reached just to the dentino-enamel junction, while the remaining 75% showed caries extending far into the dentine.
许多临床医生想当然地认为，仅表现为龋洞的咬合面龋齿已扩展（深入）至牙本质。本研究旨在量化这一观点。该研究以60颗有小而可见咬合面龋洞的磨牙为对象。拍摄咬合翼片后，将牙冠与牙根分离并包埋。切取700微米厚的切片并粘贴在塑料片上。由独立检查人员对切片的X线照片进行评分。咬合翼片对龋齿范围的估计不准确。切片的X线照片显示，约25%的磨牙龋齿仅达牙本质-釉质界，而其余75%的磨牙龋齿深入牙本质。
