this study is a randomized clinical trial to evaluate the effect of sending weekly reminders to patients undergoing fixed orthodontic appliance treatment. two groups will be formed and participants of the study will be divided between the two groups randomly. the intervention group will receive weekly reminders about the importance of oral hygiene and appliance care with adherence to scheduled appointments. the difference between these parameters will be evaluated between the control and intervention groups to describe the importance of weekly reminders to enhance the compliance and cooperation of the patient. the oral hygiene of the patient will include plaque level(plaque index), gingival statue level( bleeding index), and white spot lesion . appliance care will be recorded when in case of bracket failure and appointments missed will also be recorded .

Inclusion Criteria:

• Patients with a fixed orthodontic appliance
• both gender
• age 15-25 years old
• patient or parent have smartphone and internet connection
• malocclusion of the patient undergoing treatment according to Index of Orthodontic Treatment Need IOTN should be grade 1,2, and 3
• good gingival health.

Exclusion Criteria:

• Patients with a removable appliance
• cleft lip and palate patients
• patients with hypomineralization visible on anterior teeth
• susceptible to periodontal disease
• have diabetes
• handicap patients, a severe malocclusion above IOTN grade 3, ceramic brackets, and a child with parents that cannot read.

The initial follow up period for this research is 6 months , if participants agree it may be increased to use in other research for longer follow up.

the orthodontist did not know the group of their patients .