| 摘要 |
There is disclosed a dental prophylaxis device having a pair of spaced tynes disposed on a housing provided with an axial cavity, a stationary support located on the tynes in the vicinity of the base thereof and a circular rotatable disk located on the housing between the bases of the tynes. The circular rotatable disk rotates on a mandrel disposed in the housing cavity through a rotatable drive shaft located in a second housing. A dental flossing thread having a non-elastic loop at one end supported on the circular rotatable disk and an elastic loop on the opposite end supported on the stationary support spans the space between the ends of tynes and reciprocates therebetween when the disk is rotated. The process comprises contacting dentition surfaces with the dental flossing thread described and reciprocating the thread over the dentition surfaces and across the space between the stationary tynes while expanding and contracting the elastic loop in response to the tensile force on the thread and absorbing the tensile force imparted thereto when it encounters resistance and while imparting reciprocating movement to the dental flossing thread through the rotating motion of the disk.
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