Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
195 words
The method of removal of dental debris including plaque or caries which includes supplying liquid to a chamber having a movable wall whereby the size of the chamber can be changed, forcing the liquid out the chamber as a pulsating high velocity jet stream and applying said stream to the plaque or caries of a tooth, causing said pulsations by changing the size of the chamber by cyclically first rapidly increasing the pressure on the movable wall to reduce the size of the chamber, then at the same rate and for the same period of time decreasing the pressure on the movable wall to again change the size of the chamber and then employing a motionless period in the cycle of no change in pressure wherein the volume of the chamber remains constant, said pulsations being such that in each cycle the difference between the highest and lowest pressure applied to the dental debris, and the respective periods for which the dental debris in under highest pressure and lowest pressure cause the dental debris to be mechanically stressed and then completely relaxed during a motionless period of substantially nil application of pressure to the teeth.
Claim 2
Independent Claim
195 words
The method of removal of dental debris including plaque or caries which includes supplying liquid to a chamber having a movable wall whereby the size of the chamber can be changed, forcing the liquid out the chamber as a pulsating high velocity jet stream and applying said stream to the plaque or caries of a tooth, causing said pulsations by changing the size of the chamber by cyclically first rapidly increasing the pressure on the movable wall to reduce the size of the chamber, then at the same rate and for the same period of time decreasing the pressure on the movable wall to again change the size of the chamber and then employing a motionless period in the cycle of no change in pressure wherein the volume of the chamber remains constant, said pulsations being such that in each cycle the difference between the highest and lowest pressure applied to the dental debris, and the respective periods for which the dental debris in under highest pressure and lowest pressure cause the dental debris to be mechanically stressed and then completely relaxed during a motionless period of substantially nil application of pressure to the teeth.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein the motionless period is between 30 to 90% of the total period of each cycle.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the dental debris comprises plaque.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein the dental debris comprises caries.
Claim 6
Dependent Claim
23 words
The method of claim 1 including the step of imparting ultra-sonic vibration to the jet stream prior to application thereof to the teeth.
Claim 7
Dependent Claim
39 words
The method of claim 1 wherein the liquid is an alkaline solution of N-haloamine selected from the group consisting of N-monohaloamines and N,N-dihaloamines containing a hydroxyl group, a sulfonic acid group, a carboxylic acid group or an N-acyl group.
Claim 8
Dependent Claim
11 words
The method of claim 6 wherein the dental debris comprises plaque.
Claim 9
Dependent Claim
11 words
The method of claim 6 wherein the dental debris comprises caries.
Claim 10
Dependent Claim
47 words
The method of claim 6 wherein the jet stream has a frequency of the order of 100 to 1600 cycles per minute and the period of nil pressure during each cycle is of the order of between 30 to 90% of the total period of each cycle.
Claim 11
Dependent Claim
22 words
The method of claim 9 wherein the jet stream has a frequency of the order of 250 to 650 cycles per minute.
Claim 12
Dependent Claim
11 words
The method of claim 10 wherein the dental debris includes caries.