[Determination of Ca2+ content in human enamel by electroprobe after polypeptide tooth paste usage].
OBJECTIVE
The purpose of this study was to investigate the capability of polypeptide tooth paste for remineralization of human enamel.


METHODS
8 enamel slabs,which were taken from extracted tooth for orthodontics reason, were immersed in artificial cariogenic solution for 0.5h. Then,the slabs were treated by tooth paste with polypeptide and tooth paste without polypeptide for 5 min. After tooth paste were washed away by warm water, the slabs were immersed in artificial saliva. The experiment were carried out twice per day for 15 days. Two slabs were taken from test group(treated by tooth paste with polypeptide) and control group (treated by tooth paste without polypeptide) on the twelfth day and fifteenth day, respectively. The Ca(2+) content in enamel slabs were determined by electroprobe and analyzed by image process.


RESULTS
The content of Ca(2+) in test group was higher than that in control group significantly.


CONCLUSIONS
The polypeptide tooth paste has certain capability of inhibiting demineralization for human enamel.
School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
Bin
B
Zhang
Zheng
Z
Liu
Wei-guo
WG
Zhang