The bionator is commonly used for the correction of which type of malocclusion?

The bionator is primarily utilized for the treatment of Class II malocclusion, particularly when there is a discrepancy between the upper and lower jaws. This appliance is designed to promote forward positioning of the mandible and help align the dental arches appropriately. In Class II malocclusion, the first molar of the lower jaw is positioned more toward the back of the mouth compared to the first molar of the upper jaw, often due to a retruded mandible or protruded maxilla.

By encouraging the mandible to move forward and improving tongue posture, the bionator facilitates better alignment and occlusion of the teeth, thereby addressing the underlying cause of the Class II relationship. Its function includes stimulating growth of the mandible and modifying muscular forces, which further aids in correcting the malocclusion.

In contrast, other types of malocclusion, such as Class I or Class III, would not typically be addressed effectively with a bionator, as these conditions involve different underlying skeletal and dental relationships. Similarly, anterior open bite, which is characterized by a lack of vertical overlap between the anterior teeth, requires different treatment approaches that often focus on vertical dimension changes rather than the anterior-posterior positioning changes that the bionator addresses