AIR POLISHING DENTAL PROPHYLAXIS SYSTEM

摘要

A dental apparatus provides a substantially uniform concentration of abrasive material entrained in a pressurized gas to a desired location substantially irrespective the amount of abrasive material in a pressurized container of the apparatus, and resists clogging by the abrasive material. The apparatus includes a control unit having a container (26) that secures the abrasive material (80), the abrasive material in the container becoming entrained in pressurized gas received from a dental unit. The concentration of the mixture of entrained abrasive material in pressurized gas is maintained by upwardly directing the flow of the mixture (88) in a first conduit against a cap (74), a portion (90) of the entrained abrasive material returning to the container, with the regulated mixture (92) of entrained abrasive material in pressurized gas being delivered through a hand piece to the desired location.