Final answer:
Orthodontic treatment may be warranted when there are issues such as malocclusion, difficulty with chewing (impaired mastication), and a higher risk of tooth decay, all of which can affect oral and overall health.
Step-by-step explanation:
Indications for orthodontic treatment typically include a variety of dental and oral health concerns that can affect not only the alignment of one's teeth and jaws, but also overall oral function and health. These indications are:
- Malocclusion, which refers to the misalignment of teeth and imbalance in the way the upper and lower teeth fit together.
- Impaired mastication, or difficulty chewing, which can lead to issues such as malnutrition and impact general health, particularly in vulnerable populations such as the elderly or those with serious illnesses like AIDS.
- Susceptibility to decay, where the design of teeth, the presence of plaque, and other factors can lead to dental caries and gum disease, which may ultimately affect a person's ability to maintain a healthy mouth and body.
Considering these factors, the correct answer to the question is (4) All of the above.