The effect of an air-powder abrasive system on in vitro root surfaces.

摘要: An air-powder abrasive system, the Prophy-Jet model C-100, is now available for use by dental community. However, its has been restricted to cleaning enamel surfaces of stain and plaque. The purpose this investigation was ascertain effects system on root extracted human teeth. Thus, 20 teeth were covered with a template consisting metal band centrally located 2-mm diameter hole. banded surfaces, under controlled conditions, exposed 30 seconds. resulting defects measured using light microscope equipped graduated focus knob. Three randomly selected examination scanning electron microscopy one histologic evaluation microscopy. Untreated used as controls. In addition, untreated tooth without template. instance, brush stroke approximately 1 minute, might be done in clinical situation. This also examined removed an average 636.6 micrometers structure seconds exposure time. surface smooth, free connective tissue fibers debris, all cementum removed. Few open dentin tubules observed since most appeared have obliterated. powder crystals, viewed microscopy, sharp-pointed, somewhat elongated varying lengths. appears considerable potential treatment periodontally diseased surfaces. should tempered results future research sound judgment.