Abstract: A toothbrush having a compact toothbrush head, which contributes to the economy, cost reduction, and saving of resources, includes a brush base which is provided with consumable brush bundles and which is attachable to and detachable from the toothbrush head. The brush base of the toothbrush is an elastic member in order to absorb excessive pressure added to the brush bundles and secure stable elasticity and a substantial elastic amount for those brush bundles in contact with recessed and projected portions of teeth or those brush bundles entered into space between teeth to enable user to gently clean the teeth and gum. Even when excessive pressure is added to brush bundles, the inventive toothbrush effectively functions for the teeth brushing process. A hole penetrates perpendicularly the toothbrush head, and a slit is formed therein. Further, the inner surface of the slit is formed with recesses and projections.

Abstract: Disclosed is a toothbrush having a compact toothbrush head, which contributes to the economy, cost reduction, and saving of resources, by forming a brush base secured with consumable brush bundles so as to be attachable to and detachable from the stem of the toothbrush head. The toothbrush applies an elastic member to the brush-bundle fixed portion and the brush base in order to absorb excessive pressure added to the brush bundles and secure stable elasticity and a substantial elastic amount for those brush bundles in contact with recessed and projected portions of teeth or those brush bundles entered into space between teeth to enable user to gently clean the teeth and gum. Even when excessive pressure is added to brush bundles, the inventive toothbrush effectively functions for the teeth brushing process. To achieve the above objects, through-holes perpendicularly penetrating the stem of the toothbrush head or these through holes and a slit are formed.