Effects of the diamond grit sizes of the commercial dental diamond points on the weight-load cutting of bovine enamel and glass-ceramic Typodont teeth.
To evaluate the effect of the diamond grit size of commercial dental diamond points on the dental cutting, we conducted weight-load cutting tests on bovine enamel and glass-ceramic typodont teeth using 3 different diamond grit sizes and air-bearing and ball-bearing air-turbine driven handpieces. With the transverse load applied on the diamond point varied between 20 and 80 g, we measured rotational cutting speed and cutting volume. Generally, increases in applied load caused decreases in rotational cutting speed and increases in cutting volume. The intensity of this trend, however, differed between grit sizes. Regular grit diamond points most strongly showed this tendency, while super-fine grit diamond points were least affected. Fine grit diamond points behaved in a manner similar to regular grit points.
Taira
M
M
School of Dentistry, Hiroshima University, Japan.
Wakasa
K
K
Yamaki
M
M
Matsui
A
A
D000818:Animals; D002244:Carbon; D002417:Cattle; D002516:Ceramics; D003743:Dental Enamel; D003754:Dental High-Speed Equipment; D018130:Diamond; D005898:Glass; D003765:Models, Dental; D010316:Particle Size; D012399:Rotation
D002244:Carbon; D018130:Diamond