Toothbrush
A toothbrush is used to clean the teeth by removing plaque and debris from the tooth surfaces. Toothbrushes provide many oral hygiene benefits. For example, toothbrushes remove plaque and food debris to help avoid tooth decay and disease. They remove stained pellicle from the surface of each tooth to help whiten the teeth. Also, the bristles combined with the brushing motion will massage the gingival tissue for stimulation and increased health of the tissue. The effective delivery of an oral dentifrice and/or medication capable of inhibiting or killing bacteria responsible for dental disease has long been desirable and has been the subject of a substantial amount of research effort. A wide variety of devices, both active and passive, have been developed to accomplish the delivery of dentifrice or medication to the bristles. It is well accepted that regular brushing of the teeth along with flossing, dental examinations, and other appropriate care is essential to maintain healthy teeth and gums or to at least to minimize deterioration. In this regard hundreds of millions of toothbrushes are used regularly throughout the world. The use of the toothbrush in various forms, structures, and configurations, has been a widely accepted practice throughout the world for many years. In modern times an emphasis on dental care has led to numerous structural and functional modifications of the toothbrush in order to better facilitate dental hygiene. To many people, the prevention of cavities in teeth is of utmost importance. The most common treatments for preventing cavities include brushing the teeth, flossing, and using fluoride rinses. Of these treatments, brushing the teeth is most common. Toothbrushes and toothpastes are used for oral hygiene and for massaging the gums. In this way, teeth cleaning helps to keep the teeth, mouth and throat healthy. In accordance with the recommended daily usage, toothbrush users generally require a toothbrush with straightforward handling, an ergonomic design and a long service life along with the best possible cleaning action. Toothbrushes generally comprise a head carrying a dental cleaning tool, normally a cluster of bristles in a toothbrush, and a grip handle, arranged along a longitudinal head-handle direction. Often there is a thinned neck region between the head and the part of the handle which is gripped by the user during use. The success of toothbrushing, particularly of the molars, depends above all on exact guiding of the brush head along the inside and outside of the molars, the brush bristles to be guided from the gums to the crown of the tooth while the brush head simultaneously rotates halfway around the axis of the neck part. In general, a toothbrush is classified into a manual type and electric type according to a driving method of toothbrush bristles. Manual toothbrushes have dominated the toothbrush market for many years. Recently, power toothbrushes have increased in sales. The implication is that power toothbrushes may clean the teeth better than manual brushes. An electric toothbrush is a tool for cleaning tooth filth by repeated vibrating to and fro of the bristles moved by an electric motor. By virtue that the bristles of the electric toothbrush is moved by the electric motor, and that the rotation speed of the motor and the vibrating frequencies of the bristles are steady, the tooth filth in the gaps of the teeth can be thoroughly cleared. In comparison with a manual toothbrush, an electric toothbrush has the advantages of saving more time and effort in brushing teeth.
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