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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: Am J Orthod Dentofacial Orthop. 2010 Nov;138(5):617–622. doi: 10.1016/j.ajodo.2008.10.023

Table I.

Descriptive statistics: values of transmittance (%T) in the region of wave number 1640 cm−1

CH PH CL PL
Mean value 98.76 97.92 99.23 99.22
SD 0.89 0.54 0.99 0.49