The aim of the study is to measure prevalence of enamel white spot lesions in enamel in young adults after orthodontic treatment.

Inclusion Criteria:

1. Patients whose age between 18-30 years old consulting in the outpatient clinic.
2. Provide informed consent.
3. Co-operative patients approving to participate in the trial.
4. Both sexes are included
5. Egyptian -

Exclusion Criteria:

1. Patients under or over this age group.
2. Patients with other developmental defect, such as; fluorosis, amelogenesis imperfecta and syndromes associated with enamel formation defects.
3. Patient with MIH .
4. Refuse to participate in the study.

1. Patients whose age between 18-30 years old consulting in the outpatient clinic.
2. Provide informed consent.
3. Co-operative patients approving to participate in the trial.
4. Both sexes are included
5. Egyptian