Yellowing of teeth with tartar, removal is generally done by scraping the tartar from the surface of the teeth using an ultrasonic scaler or a hand scaler. But for teeth endogenous coloring yellowing removal can consider teeth bleaching or veneers.
When oral hygiene is not good, food, soft dirt, pigment, long-term adhesion to the surface of the teeth can appear tartar, causing yellowing of the teeth, inflammation of the gums, you can use ultrasonic scaler equipment, tartar from the surface of the teeth vibration removal, the operation of the work of the tip of the general and the surface of the teeth parallel.
You can also use a hand scaler, using the power of the wrist, to scrape the teeth from the surface of the teeth, the operation of the working end of 45 degrees into the root side of the teeth, and then 80 degrees upward to remove the lifting.
If the teeth are still yellow after scaling, it may be due to congenital yellowing or endogenous staining, and bleaching or veneers can be considered to cover the teeth.