The invention relates to orthodontic appliances that simulate the center of resistance in orthodontic treatment. The orthodontic appliance includes at least one bonding pad for attaching said appliance to a corresponding lingual side of a tooth and a netted structure extending in a mesial-distal direction substantially below the at least one bonding pad. The netted structure engages or passes components for delivering force in orthodontic treatment. With aid of the force delivering components engaged or passed in the netted structure, a dentist or a clinician can advantageously simulate the center of resistance in a dentition or a tooth in orthodontic treatment for space closure and/or distalization.
