National Patent Development Corporation

Other

Jaroslav Vit

Richard F Stockel

Sol J Barer

A method of treating teeth in dentistry, for the prevention of calculus, removal of caries, and dissolving of plaque, comprises bringing into contact with the teeth an aqueous solution containing a hypochlorite of an alkali and/or alkaline earth metal, and an amino compound capable of forming water-soluble non-mucous irritating N-chloro and/or N-dichloro derivatives thereof. The amine may be tertiary, or rearranged to result in a secondary or primary amine. Preferably an excess of amine to hypochlorite is used, to faciliate demineralization of old plaque and caries. For maintenance of the desired pH, a buffering system may be included. The solution may be used as a mouth wash, or in the form of a jet stream or a pulsated jet stream through an applicator such as a hypodermic needle, or with a carrier in the form of a paste for application with a brush.

Treating teeth

In a method for removal of dental plaque and caries in dentistry, there is applied to the teeth a high velocity pulsating jet stream of liquid possibly subjected also to ultrasonic vibration. The jet stream is pulsated, preferably with pulsations having a pressure-time wave form which includes, in each cycle, a period of lowered pressure or nil pressure sufficient for relaxation of the attacked material leading to mechanical fatiguing. The liquid may be neutral to the attacked material for a plaque removal, e.g., water, but for carie removal has a chemical action provided by an alkaline solution containing N-chloro and/or N-dichloro compounds resulting from interaction of certain hypohalites and amine compounds capable of removing plaque and caries both. The method is effective without the application of ultra-sonic vibrations, although their utilization with the aforesaid mechanical fatiguing pulsations is most effective. Utilization of ultra-sonic vibrations with harmonic pulsations is also effective. An embodiment of apparatus for application of the pulsating jet stream in dentistry incorporates pump means designed for providing the preferred pulsation wave forms. Preferably, the pump means is driven by a rotary cam co-acting with a cam follower which is adjustable to vary the duration of the pressure stroke during each cycle.

Dental treatment method and apparatus

N-haloamines also containing a hydroxy group, a sulfonic acid group, an N-acyl group or a carboxylic acid group are prepared by reacting an amine with a different N-haloamine to form the N-haloamine of the free amine.

Haloamine transfer

N-haloamines also containing a hydroxy group, a sulfonic acid group, and N-acyl group or a carboxylic acid group are useful in treating teeth to remove caries, dissolve or remove plaque, to help in the prevention of calculus formation and in the brightening of teeth. The compounds can be used in solution or in carrier form as a paste.

Dental treatment

Novel halogenated triazines which are useful as insecticides, especially as herbicides.

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Belle Mead, NJ, United States of America

Jaroslav Vit