In-process assessment of dental cutting of a leucite-reinforced glass–ceramic

Song , Xiao-Fei, Yin, Ling, and Han, Yi-Gang (2009) In-process assessment of dental cutting of a leucite-reinforced glass–ceramic. Medical Engineering and Physics, 31 (2). pp. 214-220.

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Abstract

This paper reports an in-process assessment of the dental cutting of a leucite-reinforced glass–ceramic with a high-speed dental handpiece under clinical operating conditions. The dental cutting was performed using a computer-controlled 2-degrees-of-freedom (2-DOF) testing regime and a coarse diamond bur of 106–125 μm grit size. Dynamic forces were monitored during the cutting process using a piezoelectric force dynamometer and a data acquisition system in both time and frequency domains. Bur speeds were found to decrease with the depth of cut and with the feed rate, by a maximum of 10.5% from the free-running speed of 322.2 krpm (1 krpm = 1000 rpm) to 288.4 krpm at the highest feed rate of 60 mm/min and depth of cut of 50 μm. Both the tangential and normal forces increased with the depth of cut and the feed rate, in the ranges of 0.24–1.77 N and 0.60–2.93 N respectively. The torque increased with the depth of cut and feed rate. The specific cutting energy generally decreased with the depth of cut or the feed rate with the exception of a small-scale fluctuation at the higher depth of cut and feed rate. The dental cutting characteristics for the leucite glass–ceramic were similar to those for the feldspathic porcelain but had higher magnitudes.

Item ID: 11168
Item Type: Article (Refereed Research - C1)
Keywords: Dental cutting; In-process assessment; Speed; Force; Torque; Specific energy; Leucite-reinforced glass–ceramic
ISSN: 1873-4030
Date Deposited: 21 May 2010 04:34
FoR Codes: 09 ENGINEERING > 0903 Biomedical Engineering > 090301 Biomaterials @ 50%
09 ENGINEERING > 0903 Biomedical Engineering > 090302 Biomechanical Engineering @ 50%
SEO Codes: 92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920402 Dental Health @ 50%
92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920499 Public Health (excl. Specific Population Health) not elsewhere classified @ 50%
Citation Count from Web of Science Web of Science 5
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