Evaluation of corrected lateral tomography of temporomandibular joint with Scanora® multimodal radiography
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概要
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Accurate measurement of the condylar position is important for diagnosis and treatment of temporomandibular joint (TMJ) dysfunction. Radiography has been used for this purpose, and recently, Scanora® multimodal radiography was introduced to Showa University. The projection capacity of Scanora® in TMJ is still unclear. The purpose of this study was to examine the projection capacity of a section of the target on sagittal tomography to evaluate the condylar position with Scanora®. Four TMJs obtained from dried skulls were used. Dried skulls were placed on the head stabilizing device and the light beams were positioned on the skulls. Sagittal tomography was performed using the program numbers determined by corrected angles, an interj pint distance and a slice thick ness/distance. These angles were determined by lateral orientation zonography and the submental vertex projection in each TMJ. Images were obtained from sagittal tomography of dried skulls which were placed on the head stabilizing device; this device was repositioned three times and light beam positioning was repeated. The images were evaluated by projection grade by an author (T. H.). The results were as follows: 1) The sagittal tomograms of each layer occasionally differ in the number of projections, however, a section of the target was projected in four layers. 2) When the positioning of the light beam was repeated, the sagittal tomograms of each layer were approximately the same. 3) There was not much difference in the corrected angles.The results indicated that sagittal tomography on Scanora® is useful for determining condylar position, and the head stabilizing device requires improvement in order to decrease the difference of each layer of the sagittal tomograms.
- 一般社団法人 日本顎関節学会の論文
一般社団法人 日本顎関節学会 | 論文
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