Which is NOT a purpose of using headgear in orthodontics?

In orthodontics, headgear is primarily utilized for purposes such as distalizing upper molars, advancing molars, and restricting midface growth, making these options relevant to its clinical applications.

The function of headgear involves applying extraoral forces to achieve specific tooth movements or to influence skeletal growth. Distalizing upper molars helps create space in the dental arch and correct Class II malocclusions. Advancing molars is another function that assists in proper occlusion and alignment of teeth within the arches. Additionally, headgear can be used strategically to restrict growth in the midface, particularly when managing cases of protrusive maxilla or other skeletal discrepancies.

While headgear can indirectly influence facial development and dental alignment, enhancing smile esthetics is not its primary function. The mechanisms of headgear do not focus on aesthetic improvement; rather, they are directed towards achieving functional and alignment goals in the dentition. Therefore, this option accurately represents an outcome that is not a primary purpose of headgear use in orthodontic treatment.