Reliability of spiral tomography on the alveolar crest.
- Author:
Suk Ja YOON
1
Author Information
1. Department of Oral and Maxillofacial Radiology, College of Dentistry, Chonnam National University, Korea. yoonfr@chonnam.ac.kr
- Publication Type:Original Article
- Keywords:
Tomography, X-ray;
Radiography, Dental;
Dental Implants
- MeSH:
Dental Implants;
Humans;
Jaw;
Mandible;
Maxilla;
Radiography, Dental;
Radiography, Dental, Digital;
Tomography, X-Ray
- From:Korean Journal of Oral and Maxillofacial Radiology
2004;34(3):123-128
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the reliability of measurements in spiral tomography through assessing the visibility of the alveolar crest and the measurements between the alveolar crest and other anatomic structures. MATERIALS AND METHODS: 110 spiral tomograms of the jaws were taken by Scanora X-ray unit from the patients. The visibility of the alveolar crests was estimated by 3 observers and classified as clearly visible, questionable visibility, or not visible. 3 observers measured the distance between the alveolar crest and the reference points of anatomic structures. The measurements were repeated 2 weeks later. RESULTS: 52.9% of alveolar crests on upper jaws and 61.5% of alveolar crests on lower jaws were visible. The interobserver and intraobserver agreements on the visibility were low. The mean ranges of the measurements were 1.39 mm (SD = 1.37 mm) on maxilla and 1.03 mm (SD = 1.01 mm) on mandible in the interobserver evaluation. The interobserver variance was greater than the intraobserver variance in the measurements of distance. CONCLUSION: Spiral tomography showed a relatively low reliability in the visibility and measurements of the alveolar crest.
