Oral liquid dental suspension forming a varnish for controlled teeth whitening and enamel care

A method of bleaching or lightening the color of human teeth, the method comprising sequentially performing steps (1) (5) without intervening treatment:

• (1) removing biofilm and extrinsic staining present on the teeth employing at least one of:
• (a) a slow-speed rotary handpiece and a rubber cup with abrasive paste, (b) an instrument which emits a powder, water, and compressed air, (c) toothpaste comprising abrasive particles, and (d) an ultrasonic scaler, hand instruments, and/or a prophy paste;
• (2) rinsing the mouth with an oral liquid solution comprising a bleach activator comprising tetraacetylethylenediamine (TAED), sodium nonanoyloxybenzenesulfonate (NOBS), or a combination thereof;
• (3) applying an oral liquid dental suspension to the surface of human teeth and allowing the suspension to dry to form a varnish within 30 seconds, the suspension comprising:
• (a) a tooth whitening agent comprising at least one of phthalimidoperoxycaproic acid (PAP) at 1-12 wt. %, and hydrogen peroxide at 3-10 wt. %;
• (b) a synthetic resin base comprising shellac at 25-35 wt. % and hydrogenated rosin at 10-25 wt. %;
• (c) at least one glazing agent comprising at least one of white wax (E901) and carnauba wax, at 0.1-2 wt. %;
• (d) nano-hydroxyapatite particles at 0.05-5 wt. % as a remineralization agent with an average particle size of 20-80 nm;
• (e) a desensitizing agent comprising at least one of potassium nitrate at 0.1-5 wt. % and potassium citrate at 0.1-5 wt. %;
• (f) a stabilizer, ethylenediaminetetraacetic acid (EDTA), at 0.05-0.5 wt. %;
• (g) a humectant comprising at least one of glycerin at 10-30 wt. % and propylene glycol at 10-30 wt. %;
• (h) a pH adjusting agent maintaining the pH of the suspension between 3.5 and 4.5;
• (i) and being free of animal-derived ingredients and sodium lauryl sulfate;
• (4) subjecting the varnish to visible LED light energy for 0.1-0.15 hours, without exceeding 45° C. at the tooth surface;
• (5) rinsing the mouth 0.25-2.5 hours after varnish application with an oral liquid solution comprising at least one of a teeth desensitizer and remineralization agent;
• wherein the varnish is non-drip, string-free, clump-free, and forms a continuous film with thickness less than 50 μm that remains essentially intact for 0.25-2.5 hours, and wherein less than 25 mg of tooth whitening agent is ingested or washed away in a single session.