Patent ID: 7855354
Filing Date: 2010-12-21
Classification: A61C,G01B

Abstract:
1. A scanning system ( 1 ) for 3D scanning of dental models ( 2 ) in a vertical scanning direction V, comprising a holding device ( 3 ) for a whole jaw model ( 2 ), a base ( 3 . 1 ), a swivel bearing ( 3 . 3 ) on a swivel axis ( 3 . 4 ) normal to the scanning direction V, and a stage ( 3 . 2 ) mounted for rotation on the swivel bearing ( 3 . 3 ) relatively to said base ( 3 . 1 ) and on which the dental model to be scanned ( 2 ) can be mounted, wherein said stage ( 3 . 2 ) is mounted for rotation relatively to said base ( 3 . 1 ) through an angular range σ of at least 150° about said swivel axis ( 3 . 4 ), and the whole jaw model ( 2 ) can be mounted such that said occlusal plane E is aligned parallel to said scanning direction V, an axis of rotation ( 2 . 1 ) of said whole jaw model ( 2 ) is coaxial with the swivel axis ( 3 . 4 ) of said swivel bearing ( 3 . 3 ) and is normal to said occlusal plane E, wherein a measuring circle K which is coaxial with the axis of rotation ( 2 . 1 ) in alignment with said mandibular arch ( 2 . 2 ) is positioned with respect to said whole jaw model ( 2 ) such that a radial distance dr between an outer buccal tooth surface ZA and said measuring circle K is shorter than the depth of field T.