External causes of tooth color pigment Nien
1:External color of the pigment Nien teeth (smoke spot,coffee spot, tea spot and so on).
2:Internal pigment teeth,Tetracycline pigmentation teeth, dental fluorosis.
4:Dark and yellow teeth caused by unknown reasons.
Dimension of frame: size: height: 142cm; wide: 63cm; arm length: 125cm(longest);
Weight of machine:18.5kg;
Power:40W; The wavelength of blue light:460-490nm;
The whiten hour:10-15minutes for one time, two or three times for a treatment.
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