Functional Appliances

Upper Anterior Sagittal Upper Anterior Sagittal

·         Indexing on bite blocks creates posterior anchorage

·         Single screw is placed lingual to anteriors

·         Gains arch length by advancing anterior teeth

·         Opposing model and bite registration are required for indexing

 

 

Upper Posterior Sagittal Upper Posterior Sagittal

·         Anterior bite plate with indexing is used for anchorage

·         Parallel screws are used to distalize molars

·         Opposing model and bite registration are required for indexing

 

 

 

 

Lower Sagittal Lower Sagittal

·         Gains arch length

·         Ball clasps and Adams clasps for retention are standard

·         Two screws adjacent to posteriors

 

 

 

 

 

 

3-Way Appliance (with Posterior Bite Blocks) 3-Way Appliance

·         3-directional screw

·         The advantages of a Schwarz plate and Sagittal in one appliance

·         Optional posterior bite blocks make this appliance an excellent choice to correct anterior and posterior crossbites (as shown in picture)

·         Standard design for upper arch

·         Opposing model and bite registration are required for indexing