Diode Laser Plus CPP-ACPF vs CPP-ACPF Alone for Dentin Hypersensitivity

Inclusion Criteria: * Adult participants aged from 20 to 50 years of age. * Participants with good oral hygiene. * Presence of at least one tooth with dentin hypersensitivity confirmed by the air blast and/or tactile stimuli (scoring ≥3 on the VAS). * Participants willing to cooperate and attend recall appointments * Teeth with Non-Carious Cervical Lesions. * Patients with dentin hypersensitivity due to GERD and Parafunctional habits e.g., bruxism. * Patients with dentin hypersensitivity associated with gingival recession. Exclusion Criteria: * Participants with poor oral hygiene. * History of professional or at-home desensitizing treatment within the previous 3 months. * Pregnant or lactating females. * Concurrent participation in other research studies. * Inability to comply with study procedures. * History of allergic reactions to study materials. * Medical conditions interfering with pain reporting accuracy (pain disorders, constant use of analgesics, anti-inflammatory, or psychotropic medications). * History of periodontal surgeries within the last six months. * Periodontitis and pulpitis.