Functional treatment can progress slowly -- primarily due to the fact that natural forces are not always enough to stimulate a rapid onset of measurable changes. This causes patients to experience “burnout” due to prolonged treatment times. Dr. Lynn developed the Bio-Finishing appliances to help address and overcome this problem. The Bio-Finisher is basically a Bionator with the addition of two buccal rakes. The rakes are placed into the body of the appliance at the plane of ideal occlusion. Small hooks are placed on the rake in line with the vertical axis of each of the opposing posterior teeth. Elastics (1/8”) are then placed from each hook to the opposing bracketed tooth in order to extrude the teeth at a faster rate than is possible with the standard Bionator. Compared to many other functional appliances, the Bio-Finisher allows the doctor to control the time of treatment with far more accuracy and confidence. Designed to be worn only at night, it offers excellent control of posterior eruption -- in terms of both direction and amount.

A daytime appliance is to be used in conjunction with the Bio-Finisher. It is to be worn all day -- even while eating. The normal design of the daytime appliance includes lingual ball clasps for retention and an anterior bite plane to encourage posterior vertical eruption. Because the bite is being held open, bilateral tongue cribs are used to prevent a lateral tongue thrust and to stop the tongue from resting between the posterior teeth.