Tooth preparation error evaluation method based on surface contact ratio and gradient

The invention discloses a tooth preparation error evaluation method based on surface contact ratio and gradient, relates to the technical field of tooth preparation evaluation, and aims at a preparation which is processed by a robot and is used for repairing a dental crown and carrying out error eva...

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Bibliographische Detailangaben
Hauptverfasser:	JIANG JINGANG, QIU ZHIXIAN, ZHANG JIAWEI, LIN CHUAN, XUE ZHONGHAO, ZHANG YONGDE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE CALCULATING COMPUTING COUNTING DENTISTRY ELECTRIC DIGITAL DATA PROCESSING HUMAN NECESSITIES HYGIENE IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MEDICAL OR VETERINARY SCIENCE PHYSICS
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Beschreibung
Zusammenfassung:	The invention discloses a tooth preparation error evaluation method based on surface contact ratio and gradient, relates to the technical field of tooth preparation evaluation, and aims at a preparation which is processed by a robot and is used for repairing a dental crown and carrying out error evaluation on theoretical and actual tooth preparations. According to the technical key points, a theoretical tooth preparation body and an actual tooth preparation body are registered to a tooth preparation body error evaluation coordinate system; setting a rotating coordinate system; setting evaluation data points of a theoretical tooth preparation body and an actual tooth preparation body; setting, calculating and judging the overlap ratio of the prepared surfaces of the theoretical tooth preparation body and the actual tooth preparation body; setting, calculating and judging the gradient of the prepared surfaces of the theoretical tooth preparation body and the actual tooth preparation body; according to the metho