A method for making an orthodontic appliance comprising: receiving, by a processor of a computer system, a three-dimensional digital model of an orthodontic appliance； determining, by the processor, a compensation factor to be applied when manufacturing the orthodontic appliance using the laser-based system, the determining the compensation factor including: aligning the three-dimensional digital model of the orthodontic appliance in a three-dimensional space with a predetermined position； determining a deviation of a position of a model groove base from a desired position of the model groove base, the compensation factor being based on the deviation and relating to an amount of material to be used during the manufacturing of the orthodontic appliance； causing the laser-based system to apply the compensation factor for manufacturing the orthodontic appliance.
