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American Journal of Oral Medicine and Radiology

Volume 5, Issue 2, 2018
Mcmed International
American Journal of Oral Medicine and Radiology
Issn
XXX-XXXX (Print), 2394 - 7721 (Online)
Frequency
bi-annual
Email
editorajomr@mcmed.us
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Abstract
Title
IMPACT OF THYROID COLLARS ON ACCURACY OF LATERAL CEPHALOGRAMS: DIAGNOSTIC AND DESCRIPTIVE EVALUATION
Author
Dr Bongu Sumithra, Dr Vengala Sudhakar
Email
keyword
Thyroid collars, Lateral cephalograms, Diagnostic accuracy, Radiographic Landmarks, Radiation protection.
Abstract
This study aimed to evaluate the impact of thyroid collars (TCs) on the accuracy of lateral cephalograms from both diagnostic and descriptive perspectives. Blinded and randomized observers assessed lateral cephalograms obtained with and without TCs. Two groups were involved: one group retrieved lateral cephalograms without TCs from an oral radiology archival system, while the other group had lateral cephalograms performed by an oral radiology department using TCs. Digital Kodak systems were employed for imaging. Two observers, blinded to the study's purpose, analyzed the lateral cephalograms, with inter-observer variance also examined. Each group comprised 50 lateral cephalograms for analysis. In the TC group, 12 out of 15 landmarks were identified, with three landmarks, including the hyoid bone, second cervical vertebra, and third cervical vertebra, not identified. No significant differences were observed between observers in landmark identification on lateral cephalograms. However, TCs were found to obscure some landmarks, which are crucial for calculating the sella-nasion-mandibular (SNM) index. Given the risk of thyroid cancer from radiation exposure, lead TCs are routinely used during lateral cephalograms. Therefore, obtaining accurate SNM index information from cephalometric radiography may not be necessary when TCs are utilized.
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