The effect of desensitizing agents will be studied on dentin hypersensitivity in orthodontic patients.it is a randomized controlled trial. three experimental groups and one placebo group.

Inclusion Criteria:

• Orthodontic patients aged 18-40 years.
• Presence of mild to moderate dentin hypersensitivity (VAS ≥ 4).
• Willingness to comply with a 12-week follow-up period.
• No active periodontal disease or untreated caries.
• Not pregnant or breastfeeding.
• No history of allergy to desensitizing agents

Exclusion Criteria:

• o Patients with systemic conditions affecting oral health (e.g., diabetes, immunocompromised).

  • Patients using medications that affect tooth sensitivity (e.g., anti-inflammatory drugs).

IM NOT COMFORTABLE