| 摘要 |
<p>The invention relates to a toothbrush (1) with a gripping handle (3) and a head (5) with a semicircular or "U" form equipped with first, second and third bristles (7, 9, 11 ) for brushing, contemporaneously, the front, upper and rear parts of a tooth; the second and third bristles (9, 1 1 ) are arranged in a perpendicular position with respect to the surfaces of the head (5) so as to prove inclined with respect to the tooth to clean; the said second bristles and third bristles (9, 11 ) are realised with a length which increases progressively from the interior to the exterior of the head (5) so as to be suitable to effect brushing in a parallel manner to the vestibular and front surfaces of the tooth and to be suitable to clean, contemporaneously, both the vestibular, bite plane and palatatine/lingual surfaces of the tooth (6) and likewise the gingival epithelial groove and the irregular surfaces of the bite plane surfaces thereof.</p> |
