| 摘要 |
A dispensing brush includes a replaceable reservoir cartridge and handle part having a reservoir chamber and a material advancing piston disposed therein. The replaceable cartridge and handle part is closed at one end by the piston and, possibly, by a dental floss dispenser having a mirror mounted on a cover therefor. The opposite end of the reservoir is closed by a transverse wall including a rupturable membrane seal. The membrane seal is scored or provided with a reduced wall thickness, cross shaped, frangible portion which is engageable with a projection formed on an adapter part of the brush head so that when the head is connected to the replaceable cartridge and handle part, the seal formed by the rupturable membrane is broken and material, such as toothpaste, may flow to the brush head without becoming contaminated.
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