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Abstract Background The existing augmented reality (AR) dental implant surgery navigation system usually uses markers to complete image guidance. However, markers often affect dentists' operations and make patients uncomfortable. Methods To solve the problems caused by markers, this paper proposes an effective marker-less image guidance method.
1 Introduction The Hemudu site is approximately 7,000 years old. Chinese archaeologists have conducted two archaeological excavations at the Hemudu site in Zhejiang Province. During the first excavation in 1973-1974, archaeologists discovered a total of 45 bone tools that were similar in shape to pipes. The bone pipes varied from 6 to 10cm in length, and they are hollow structures, that are slightly curved with round holes in their convex arcs (Anonymous, 1978).
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