Toothbrush

Abstract

A toothbrush enhanced in a portions-between-teeth cleaning performance without sacrifice in a smooth-surface cleaning performance; specifically a toothbrush which is capable of, as its main theme, enhancing a portions-between-teeth cleaning performance and providing durability for maintaining the performance and which is, as its sub-theme, excellent in appearance and durability. To attain the main theme, tuft holes formed in a block head are in an approximately oval or rectangular shape, the tuft holes are inclined with respect to the block head surface and mono-filaments in rectangular cross section are used to increase a cleaning performance. To attain the sub-theme, a method of driving parallel lines are disclosed such that adjacent tuft holes are staggered with each other so that the driven parallel lines do not lie on a linear line.

Description

technical field [0001] The present invention relates to a toothbrush which has an excellent ability to clean interdental spaces and neck portions, and has an excellent ability to clean smooth surfaces such as tooth surfaces. Background technique [0002] The toothbrush cleans or brushes the teeth in the oral cavity through the elasticity of the monofilament contained in the tow embedded in the bundle hole of the handle. Since the cleaning effect increases with increasing elasticity, toothbrushes are required to have high elasticity mainly in the brushing direction. In addition, the toothbrush needs to be adapted to the state of the part being cleaned, so as to perform a specific cleaning action on each individual part. There are various types of cleaning ability with respect to the state of the part to be cleaned, but typical examples are the ability to clean smooth surfaces such as tooth surfaces and the ability to clean fine spaces in teeth. The fine space includes the i...

AI Technical Summary

Problems solved by technology

[0006] Common measures to increase the elasticity of the monofilaments are to increase the diameter of the circular cross-section monofilaments, or to make the monofilaments from harder materials, however, an increase in cleaning ability can hardly be expected from these measures alone

The reason is that when the diameter of the monofilament is increased or the monofilament is made of a harder material, the tissues inside the oral cavity feel too much stimulation due to contact with the monofilament, and when only these measures are used, the rigid end has Possibility of failing to reach fine spaces between teeth

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