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ORIGINAL RESEARCH Table of Contents   
Year : 2012  |  Volume : 23  |  Issue : 5  |  Page : 698-699
Utility of lead thyroid collar in cephalometric radiography


1 Department of Oral Medicine and Radiology, Vidya Shikshan Prasarak Mandal's Dental College and Research Center, Digdoh Hills, Nagpur, Maharashtra, India
2 Department of Oral Medicine and Radiology, TIFAC CORE in Interventional Radiology, AVBRH, Pune, Maharashtra, India
3 Department of Oral Pathology, Bharti Vidyapeeth, Dhanakwadi, Pune, Maharashtra, India
4 Department of Oral Medicine and Radiology, Sharad Pawar Dental College and Hospital, DMIMSU, Sawangi (M), Wardha, Maharashtra, India
5 Department of Pedodontia, Bharti Vidyapeeth, Dhanakwadi, Pune, Maharashtra, India

Correspondence Address:
Anuraag B Choudhary
Department of Oral Medicine and Radiology, Vidya Shikshan Prasarak Mandal's Dental College and Research Center, Digdoh Hills, Nagpur, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-9290.107442

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Objective: To investigate whether the application of thyroid collars (TCs) affects the results of cephalometric study. Study Design: The Steiner cephalometric analysis of the patients was performed using lateral cephalometric radiographs, which were taken twice for each patient: Once using TCs (TC group; n0 = 50) and once without using TCs (NTC group; n = 50). A randomized and observer-blinded diagnostic study with head films taken from the two aforementioned groups was performed and results were evaluated with the t-test and Z-test, using GraphPad® Prism 4 software. Results : Statistical analysis using t-test was performed. The values of the line angles used in Steiner cephalometric analysis were compared for which values of each angle remained unchanged when done using TCs and without TC to the same samples. Conclusions : Lead shielding of the thyroid gland does not affect landmark identification or the specific measurements of the angulations traced during cephalometric analysis. TCs should be routinely applied during cephalometric radiography if cephalometric analyses are limited to the structures above the second cervical vertebra.


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