Effect of particle diameter on air polishing of dentin surfaces |
| |
Authors: | Kazuhiro Tada Kiyoshi Kakuta Hideo Ogura Soh Sato |
| |
Institution: | (1) Department of Periodontology, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamaura-cho, Chuo-ku, Niigata 951-8580, Japan |
| |
Abstract: | We examined the abrasiveness of glycine powders with particle diameters of 63 and 100 μm by measuring the depth and volume
of defects produced during air polishing of human dentin. A total of 36 extracted human teeth were embedded in acrylic resin.
The resin blocks were polished until the dentin surfaces were exposed. The nozzle of an air polisher was mounted 4 mm from
the dentin surface, and the dentin surface was treated for 5 s at one of two angles of incidence (45° or 90°). Three materials
were used in the polishing process: NaHCO3 powder with a mean particle diameter of 100 μm (Handy Jet Powder), glycine powder with a mean particle diameter of 63 μm
(Handy Jet Powder PMTC), and glycine powder with a mean particle diameter of 100 μm (Handy Jet Powder Recall). The defect
depth at both angles was significantly deeper after treatment with Handy Jet Powder or Handy Jet Powder PMTC. The defect volume
was the greatest with Handy Jet Powder, followed by Handy Jet Powder PMTC, and Handy Jet Powder Recall. The larger diameter
glycine powder resulted in less damage to the dentin. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|