Incorporating a small omega adjustment loop into the lingual wire during construction can simplify lower lingual arch adjustments. Omega adjustment loops incorporated into lingual arch. E. Evaluating Occlusal Rests, if present. If occlusal rests are incorporated into the MARA they need to be checked for their approximation to the teeth. This particular procedure will need to be re-checked at the trial fit of the appliance.
Rests vary in design and function.
Occlusal rests are sometimes placed on second molars to ensure that there is no super eruption of those teeth during Class II correction. Occlusal rests may be placed on pre-molars just as seen with the Herbst, as well as off the lingual arch to help with stabilization. Occlusal rests are sometimes used in conjunction with expanders to control the molars from tipping and enmasse expansion of the entire arch. MARA with second molar rest. Extrusion of upper second molars due to MARA treatment without second molar rests, or composite buildups.