When selecting an orthodontic appliance the following questions need to be addressed:
- What are the patient-important values and preferences with regard to orthodontic appliances?
- Which appliances can fulfill the orthodontic treatment objectives?
- What is the best research evidence on these appliances?
- Which appliances are the most effective (obtain the desired result fastest)?
- Which appliances cause the least adverse effects?
- Which appliances are the most precise?
- Which appliances are the most comfortable?
- Which appliances are the most esthetic?