The objects of this study were to analyze the crown angulation, crown inclination, molar offset angle, and crown in and out of the Korean adults having normal occlusion. 14 subjects (7 male, 7 female) were chosen in the 80 subjects who had ideal occlusion and beautiful profile we thought. The casts were obtained from the subjects, and then they were scanned with 3-dimensional scanner machine. We analyzed them with computer program based upon Andrews methods and the following results were obtained.
1. We got the norm of the crown angulation, crown inclination, molar offset angle, and crown in and out in the Korean adults.
2. The analysis using 3 dimensional scanner and computer program was more fast and accurate than the manual methods.
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