Kandemir S
Department of Oral Diagnostic Sciences and Radiology, Faculty of Dentistry, University of the Aegean, Bornova, Izmir, Turkey.
Quintessence Int. 1997 Jun;28(6):387-92.
The aim of this study was to investigate the visibility of secondary caries in the gingivobuccal and gingivolingual corners of teeth restored with amalgam restorations. Standard Class II cavities were created in 15 orthodontically extracted mandibular premolar teeth, and the teeth were randomly divided into five groups of three teeth each. In four of the groups, a 1.0- or 1.5-mm cavity was prepared in the gingivolingual or gingivobuccal corner of the restoration. No lesions were created in group 5, the control group. The teeth were restored with amalgam. The teeth were adapted in the actual tooth space of 15 volunteers with one mandibular premolar missing. Radiographs of each patient were taken with the bisecting-angle technique and the bite wing technique. The radiographs were sorted at random and given to 15 members of the professoriate who were often involved in detecting caries and to 17 members who were not normally involved in detecting caries. The bitewing technique was found to be more reliable than the bisecting-angle technique in detecting secondary caries in gingivobuccal approximal corners (P < .05). It was also found that, in group 1, the bisecting-angle technique was more reliable than the bitewing technique in detecting caries in gingivolingual corners (P < .05). No significant differences were found in the correct evaluation of radiographs between the faculty who were normally involved in the detection of caries and those who were not.
本研究的目的是调查用银汞合金修复的牙齿龈颊角和龈舌角继发龋的可视性。在15颗正畸拔除的下颌前磨牙上制备标准II类洞型，将牙齿随机分为五组，每组三颗。在其中四组中，在修复体的龈舌角或龈颊角制备1.0或1.5毫米的洞。第5组为对照组，未制备病变。用银汞合金修复牙齿。将这些牙齿放入15名缺失一颗下颌前磨牙的志愿者的实际牙间隙中。用分角线投照技术和咬合翼片技术为每位患者拍摄X线片。将X线片随机分类，交给15名经常参与龋齿检测的教授和17名通常不参与龋齿检测的人员。在检测龈颊邻面角的继发龋方面，咬合翼片技术比分角线投照技术更可靠（P <.05）。还发现，在第1组中，在检测龈舌角龋齿方面，分角线投照技术比咬合翼片技术更可靠（P <.05）。在龋齿检测方面，经常参与检测的教员和不经常参与检测的教员在正确评估X线片方面没有发现显著差异。
