| 摘要 |
<p>In the present device, the arms (12) have only brackets (34) on the terminal end portions thereof, the relatively outboard portions (38) of which elbow out in front of the arms, like cowcatchers, below the terminal ends (20) of the arms. The portions (38) in turn have mitt-like brushes (50) thereon comprised of fields of spaced individual bristle of 0.010 inch in diameter or greater at the bases (64) thereof, collectively firm but individually spaced apart from one another at heights and densities enabling them to laterally deflect within the fields, and made of a thermoplastic resin material which is 47 or less in durometer on the Shore D Scale, so as to be ultra soft to the gums of the teeth.</p> |
