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1. A method for treating a subject's teeth, comprising: determining a target configuration for the subject's teeth based on tooth models position information, the target configuration comprising at least one treatment step for reaching a treatment goal for the subject's teeth, wherein the tooth model position information comprises one or more of an initial movement pathway determination for the subject's teeth in reaching the treatment goal and an updated movement pathway determination;
producing a pair of receiving features for each tooth model on a dental base at determined locations, wherein the producing comprises: determining locations of the receiving features in response to the at least one treatment step of the target configuration, the receiving features being configured for receiving physical tooth models in a single predetermined position and for fixedly holding the physical tooth models in the position until the physical tooth models are removed, wherein the position comprises location and orientation based on the target configuration, and wherein the dental base do not have mechanisms within that may be manipulated to adjust the physical tooth models during the holding of the physical tooth models in the position; assembling the physical tooth models on the dental base to form a physical arch model; and producing a dental aligner using the physical arch model to move the subject's teeth to the target configuration.
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