Machinability of enamel under grinding process using diamond dental burrs

Enamel grinding is a critical dental surgery process. However, tooth damage during the process remains a significant problem. Grinding forces, burr wear, and surface quality were characterised in relation to grinding speed, enamel orientation, grinding depth, and burr grit grain size. Results indica...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine Journal of engineering in medicine, 2019-11, Vol.233 (11), p.1151-1164
Main Authors: Li, Quan-Zhou, Wang, Cheng-Yong, Zheng, Li-Juan, Zhao, Dan-Na, Zeng, Chao-Feng
Format: Article
Language:English
Subjects:
Adolescent
Adult
Biomechanical Phenomena
Breakage
Burrs
Dental enamel
Dental Enamel - surgery
Diamond
Diamond machining
Diamonds
Enamel
Feed direction
Grain size
Grinding
Grit
Humans
Impact damage
Kinetics
Machinability
Mechanical Phenomena
Oral Surgical Procedures - instrumentation
Rapid prototyping
Surface grinding
Surface Properties
Surface roughness
Surgery
Teeth
Torque
Vertical orientation
Wear
Young Adult
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Summary:Enamel grinding is a critical dental surgery process. However, tooth damage during the process remains a significant problem. Grinding forces, burr wear, and surface quality were characterised in relation to grinding speed, enamel orientation, grinding depth, and burr grit grain size. Results indicated that enamel rod orientation, grinding depth, and grinding speed critically affected enamel grinding. Occlusal surface grinding resulted in significantly higher normal forces, surface roughness, and marginally greater tangential forces than axial surface grinding. Damage to enamel machined surfaces indicated the significant impact of diamond grit size and rod orientation. Burr wear was primarily diamond grit peeling off and breakage. Surface roughness of axial and occlusal sections was largely influenced by grinding speed and diamond grit size. Improving the surface quality of machined enamel surfaces could be realised using fine burrs, reducing the grinding speed and grinding depth, and adjusting the feed direction vertical to the rod orientation. Enamel surface quality and roughness could be improved by reducing brittle failure and circular runout during the grinding process, respectively.
ISSN:0954-4119
2041-3033
DOI:10.1177/0954411919873804