A Comparative Study of Spiral Tomograms with Different Slice Thicknesses in Dental Implant Planning.
- Author:
Suk Ja YOON
1
Author Information
1. Department of Oral and Maxillofacial Radiology Chonnam University Hospital, Korea.
- Publication Type:Comparative Study ; Original Article
- Keywords:
tomogram;
dental implant;
mandibular canal
- MeSH:
Dental Implants*;
Mandible;
Radiography, Dental, Digital
- From:Journal of Korean Academy of Oral and Maxillofacial Radiology
1999;29(1):191-199
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To know whether there would be a difference among spiral tomograms of different slice thicknesses in the measurement of distances which are used for dental implant planning. MATERIALS AND METHODS: 10 dry mandibules and 40 metal balls are used to take total 120 Scanora tomograms with the slice thickness of 2 mm, 4 mm and 8 mm. 3 oral radiologists interpreted each tomogram to measure the distances from the mandibular canal to the alveoalr crest and buccal, lingual and inferior borders of mandible. 3 observers recorded grades of 0, 1 or 2 to evaluate the perceptibility of alveolar crest and the superior border of mandibular canal. For statistical analysis, ANOVA with repeated measure, Chi-square tests and intraclass correlation coefficient(R2, alpha) were used. RESULTS: There was not a statistically significant difference among spiral tomograms with different slice thicknesses in the measurement of the distances and in the perceptibility of alveolar crest and mandibular canal(p>0.05). All of them showed a good relationship in the reliability analysis. The perceptibility of alveolar crest and mandibular canal was almost similar and an excellent relationship was seen on all of them. CONCLUSIONS: There would be no significant difference, no matter which spiral tomogram of any slice thickness may be used in dental implant planning, considering the thickness of dental implant fixture.
