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Demographic characteristics of the study population (orthodontic patients involved in contact sports).
| Age | 17.56 (5.84) years | |
| Gender | Females | 72 (49%) |
| Males | 75 (51%) | |
| Contact sports involved | Football | 60 (40.8%) |
| Martial arts | 35 (23.8%) | |
| Basketball | 28 (19%) | |
| Volley ball | 10 (6.8%) | |
| Hand ball | 7 (4.8%) | |
| Type of appliance | Fixed | 113 (76.9%) |
| Removable | 34 (23.1) | |
| Duration of appliance wear | Less than 6 months | 35 (23.8%) |
| 6months to year | 62 (42.2%) | |
| More than one year | 50 (34%) | |
