What is the main objective of using a Bionator in orthodontics?

The primary objective of using a Bionator in orthodontics is to correct skeletal discrepancies. The Bionator is a type of functional appliance designed to guide the growth and development of the jaw, particularly in cases where there is a mismatch between the upper and lower jaw, a condition often referred to as skeletal malocclusion. By repositioning the mandible or maxilla, the Bionator helps to achieve a more balanced and functional occlusion, particularly in growing patients.

This device operates by encouraging the mandible to move forward, which can help in improving the relationship between the upper and lower teeth, subsequently aligning them more effectively. Furthermore, the Bionator's design allows for simultaneous dental arch coordination and the correction of habitual patterns, enhancing overall facial aesthetics and function.

The other options focus on specific issues that the Bionator is not primarily designed to address. It is not specifically aimed at closing gaps between teeth, improving occlusal height, or directly supporting oral hygiene, which are more relevant to different types of orthodontic treatments or devices. Thus, the correct answer emphasizes the Bionator's role in addressing broader skeletal alignment issues rather than localized dental corrections.