There is no current evidence on the comfort or wearability of orthodontic mouthguards. These mouthguards adapt to the mouth without the need for dental impressions and laboratory facilities and are suggested to be more comfortable for orthodontic patients by allowing the teeth to move during treatment without the need for them to be replaced regularly during treatment. This study aims to assess and compare the comfort and wearability of orthodontic mouthguards with custom-fitted mouthguards. The results of this study will allow orthodontists to provide evidence-based information to individuals undergoing fixed appliance therapy.

Inclusion Criteria:

• Undergoing active orthodontic treatment with pre-adjusted edgewise fixed appliances only for a minimum period of 9 months
• Playing sports where the use of a mouthguard is recommended
• Playing at least 120 minutes of sport (match or training) during a 6-8 week period
• Class I, II or mild III (edge-to-edge) incisor malocclusion
• Able to complete a VAS questionnaire
• No diagnosed sensory processing disorder

Exclusion Criteria:

• Undergoing active orthodontic treatment that is not pre-adjusted edgewise fixed appliances, or requires a fixed expander, or treatment is likely to be completed within 9 months
• Playing sports where the use of a mouthguard is not recommended Playing less than 120 minutes of sport (match or training) during a 6-8 week period
• Moderate to severe class III (reverse overjet) incisor malocclusion
• Unable to complete a VAS questionnaire
• Have a diagnosed sensory processing disorder