A Comparison of Hand Traced Conventional Lateral Cephalogram with Digital Lateral Cephalogram Using Different Calibration Techniques of Dolphin Imaging (Version 11.5).
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Date
2015-04
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Abstract
Objective:The purpose of the study was to evaluate and compare hand tracings on conventional lateral
cephalograms with different calibration techniques available in dolphin imaging on digital lateral cephalogram.
Materials and Methods:50 Conventional lateral cephalogram and 50 digital lateral cephalogram were taken in (NHP) at
same period of timeon the same patient. Two angular measurements Facial Axis Angle and ANB angle two linear
measurements Sella to Nasion and Sella to articulare have been taken. The digital images were traced by calibration 3
techniques Ruler, DPI and Land mark available in Dolphin Imaging Software Version 11.5.The conventional were traced on
lead acetate paper and data has been collected.Results: In measurement of Facial Axis Angle conventional when
compared with different calibration techniques Ruler Land Mark technique show <0.001significantvalue. In measurement of
ANB angle shows no significant values. In measurement of S-N length Ruler compared with DPI has shown significant p
value <0.001. DPI compared with conventional shows 0.001. S-AR length has shown significant value p value 0.006, DPI
compared with Landmark shows 0.007,Landmark compared with conventional shows 0.003. Conclusion: According to our
study conventional when compared with calibration techniques ruler has show only one significant value DPI and land mark
has shown two significant values so our study conclude that using ruler is the better option for calibration of digital
radiograph. As ruler is more accurate to conventional we compare DPI and Landmark techniques to ruler, landmark shows
less variation with ruler so according to our study the second option for calibration of digital radiograph is landmark and last
option comes DPI.
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Keywords
Cephalogram, Dolphin Imaging, DPI, Landmark, Ruler
Citation
Neravati Jeevan Kumar, Jammula Sudarsan, Singaraju Gowri Sankar, Badepalli Reddappa Reddy, Prasad Mandava. A Comparison of Hand Traced Conventional Lateral Cephalogram with Digital Lateral Cephalogram Using Different Calibration Techniques of Dolphin Imaging (Version 11.5). Annals and Essences of Dentistry. 2015 Apr-June; 7(2): 37e-42e.