Claims
- 1. A method for whitening teeth comprising:
- (i) providing an oral composition which includes a first and second composition each of which is stored separate from one another prior to time of use, the first composition containing from 0.01 to 20% of a peroxide by weight of the oral composition, and the second composition containing from 0.05 to 60% of a bicarbonate salt by weight of the oral composition, and the oral composition having a pH from 9.0 to 12;
- (ii) dispensing the first and second compositions onto a toothbrush;
- (iii) applying the first and second compositions from the toothbrush to the teeth:
- (iv) brushing the teeth thereby mixing first and second compositions together; and
- (v) repeating steps (ii) through (iv) on a plurality of days, the teeth to be whitened being exposed to the oral composition for the equivalent of 10 seconds to 5 minutes per day exposure until the delta L values of the equivalent use time of combined peroxide and bicarbonate compositions provide substantially greater whitening effect than additive results of tooth whitening with either peroxide or bicarbonate compositions used separately, as represented by differences between colorimeter readings of tooth base line versus values after exposure.
- 2. The method according to claim 1 wherein each of the first and second compositions are semi-solids.
- 3. The method according to claim 1 wherein the peroxide is hydrogen peroxide.
- 4. The method according to claim 3 wherein hydrogen peroxide is present in an amount from 0.5 to 10% by weight of the oral composition.
- 5. The method according to claim 1 wherein sodium bicarbonate is present in an amount from 0.05 to 40%.
- 6. The method according to claim 1 wherein the oral composition is dispensed from a dispensing container in pump form.
- 7. The method according to claim 6 wherein the dispensing container has an upper and a lower body which are telescopically engageable one with another, the upper body including at least two hollow and separate parallel cylinders, the cylinders having a first generally closed end and a second end telescopically and slidingly accommodating at least two parallel pistons which conform to ride sealingly along the interior walls of the cylinders so as to force any flowable materials to flow toward the first end of the cylinder upon relative compression of the cylinders and pistons, the cylinders having outlet channels;
- an outlet means in fluid communication with the outlet channels, the outlet means including adjacent outlet openings unconnected to each other and having means for causing the flowable materials to flow toward each other at the outlet openings to form a banded, unmixed stream;
- the first and second compositions being the flowable materials and stored in separate ones of the at least two hollow parallel cylinders; and
- the method further comprising the step of actuating the dispenser container to dispense the unmixed stream.
- 8. The method according to claim 7 wherein the unmixed stream is placed upon a toothbrush and applied to the teeth, and mixing is performed in the mouth so as to whiten the teeth.
Parent Case Info
This application is a continuation in part of application Ser. No. 08/783,972 filed Jan. 15, 1997, now abandoned.
US Referenced Citations (29)
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Non-Patent Literature Citations (1)
Entry |
Colgate Baking Soda & Peroxide Carton -1996. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
783972 |
Jan 1997 |
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