Orthodontic Assistant Practice Exam

Which of the following best describes headgear in orthodontics?

1. It is used to correct anterior tooth position

2. It is primarily for aesthetic purposes

3. It provides external force for tooth movement

4. It is only used in adults

The correct answer is: It provides external force for tooth movement

Headgear in orthodontics is an important appliance that provides external force to move teeth into the desired position more effectively. This form of treatment assists in guiding the growth of the jaw and tooth alignment, particularly in children and adolescents whose jaws are still developing. By applying pressure from outside the mouth via straps or bands attached to a metal frame, headgear works by either pulling the surrounding teeth or pushing them to create more space and improve occlusion. The function of headgear specifically targets issues such as overbites, underbites, and crowding by using the principles of biomechanics to influence tooth movement and jaw structure. This capability makes it a crucial tool in addressing various malocclusions and facilitating comprehensive orthodontic treatment. Other options do not accurately represent the primary function of headgear. While it may indirectly contribute to aesthetic results through improved alignment, its main purpose is not aesthetic. The description focusing on anterior tooth position suggests a limited application, as headgear is used to correct broader dental alignment issues rather than just anterior teeth. Suggesting that it is only for adults overlooks its critical use in younger patients when their bone structure is still malleable.