Molander B, Ahlqwist M, Gröndahl H G, Hollender L
Department of Oral Radiology, University of Göteborg, Gothenburg, Sweden.
Dentomaxillofac Radiol. 1991 Aug;20(3):155-60. doi: 10.1259/dmfr.20.3.1808000.
Panoramic and intra-oral radiographs from 400 consecutive patients were evaluated for the assessment of the marginal bone height. Two hundred panoramic radiographs were exposed with the rotational technique and 200 with the intra-oral X-ray tube technique. Measurements of the approximal marginal bone level were independently performed by two observers. Complete agreement between panoramic and intra-oral radiographs was, on average, obtained in 55% and 49% of the sites, respectively. When the criterion for agreement was widened to include recordings with a difference of +/- 1 mm, the agreement was on average 87% irrespective of the techniques compared. The agreement varied with tooth type and severity of the marginal bone loss. Angular bony defects and furcation involvements were recorded separately. For angular bony defects there was a variation in agreement from 33% to 46% for the rotational technique and from 35% to 51% for the intra-oral X-ray tube technique depending on localization. Furcation involvements of the molars were equally recorded in 60% and 59%, respectively, but in only 12% and 28% for the upper premolars. Interobserver agreement was 58% for the intra-oral radiographs, 60% and 59% for the two panoramic techniques. Mean intra-observer agreement was 68%, 66% and 68%. It is concluded that panoramic radiography can often be used for the assessment of marginal bone loss alone, supplemented when necessary by intra-oral radiographs.
对400例连续患者的全景片和口内片进行评估，以测量边缘骨高度。200张全景片采用旋转技术投照，200张口内片采用口内X线球管技术投照。两位观察者独立测量邻面边缘骨水平。全景片和口内片之间，平均分别在55%和49%的部位完全一致。当一致性标准放宽至相差±1mm的记录时，无论采用何种技术，平均一致性为87%。一致性因牙齿类型和边缘骨丧失的严重程度而异。角形骨缺损和根分叉病变分别记录。对于角形骨缺损，根据其位置，旋转技术的一致性从33%到46%不等，口内X线球管技术从35%到51%不等。磨牙的根分叉病变记录一致性分别为60%和59%，但上前磨牙仅为12%和28%。口内片的观察者间一致性为58%，两种全景技术分别为60%和59%。观察者内平均一致性为68%、66%和68%。结论是全景片通常可单独用于评估边缘骨丧失，必要时辅以口内片。
