[Saliva analysis by Fourier transform infrared spectrum in the enamel decalcification of orthodontic treatment of the teenagers].
OBJECTIVE
To find a method for saliva analysis, and to investigate the relation between saliva and the enamel decalcification in orthodontic treatment, and to predict the risk of enamel decalcification.


METHODS
The saliva samples came from 72 patients who were 12 to 16 years old (36 patients with enamel decalcification, 36 without enamel decalcification). Fourier transforms infrared spectrometry was used to detect their saliva. The spectrum was analyzed by Fisher's discriminatory analysis using SPSS 13.0 software package.


RESULTS
There was difference in saliva between patients with enamel decalcification and patients without enamel decalcification by Fourier transform infrared spectra. Discriminate function was obtained.


CONCLUSIONS
In the teenagers, Fourier transforms infrared spectrometry is an important tool for saliva analysis. Discriminate function as a risk index of enamel decalcification could be used for fixed orthodontic treatment.
Qi
Kun
K
Department of Orthodontics, Stomatological Hospital, Xi'an Jiaotong University, Xi'an 710004, Shanxi Province, China.
Zou
Min
M
Liu
Zheng
Z
D000293:Adolescent; D002648:Child; D003743:Dental Enamel; D005583:Fourier Analysis; D006801:Humans; D016910:Orthodontic Brackets; D012463:Saliva; D017001:Tooth Demineralization