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Effect of Chemical and Light Bleaching Techniques on Color Change, Dentin Hypersensitivity and Patient Satisfaction
Sponsor: Nahda University
Summary
Aim of The Study This study aims is to evaluate color change, dentin hypersensitivity and patient satisfaction after different bleaching techniques at different time intervals. Materials(subjects)\& Methods * Chemically activated bleaching kit. * Light activated bleaching kit. This will be a randomized single-blind clinical trial, patients attending the faculty. Thirty-two patients will be selected for the study. Oral hygiene steps will be taken at the first visit, as well as scaling and polishing of the teeth. Patients will be divided into two groups according to the bleaching technique used. Group 1: chemical bleaching, Group 2: light activated bleaching. Color change measurements: Tooth color measurements will be performed at baseline T0, immediately after bleaching treatment T1, 1-week T2 and 1-month T3 after bleaching using a spectrophotometer. The whiteness index will be also calculated to verify the perceived bleaching effect. Dentin hypersensitivity will be evaluated at baseline D0, immediately after bleaching treatment D1, 1 week (D2) and 3 month (D3) after bleaching using Visual Analogue Scale VAS numbered from 0 (no pain) to 10 (maximum extreme pain). At the end of the study (3 months) a questionnaire was given to the patients to assess their satisfaction with bleaching treatment.
Official title: Comparative Evaluation of the Effect of Chemical and Light Activated Bleaching Techniques on Color Change, Dentin Hypersensitivity and Patient Satisfaction. (In-vivo Study)
Key Details
Gender
All
Age Range
18 Years - 45 Years
Study Type
INTERVENTIONAL
Enrollment
30
Start Date
2025-02-15
Completion Date
2025-05-13
Last Updated
2026-06-25
Healthy Volunteers
Yes
Conditions
Interventions
Light activated bleaching
bleaching procedure was conducted according to the manufacturer's instructions. Retractor was set in place, the teeth were dried by air stream, the lips were lubricated with Vaseline, a cheek retractor was placed, and isolation was achieved using cotton rolls and the gingival soft tissues were isolated by protective Liquidam (Philips, Andover, MA), Labial surfaces of the teeth 11, 12, 21, 22 were then covered with whitening gel in about 1-2mm thick layer. one 20 min session was done.protective eye wear for both patient and operator was used,d, the bleaching gel was applied, and agitated, and then light activation was used for the period of the session.
Chemically activated bleaching
The bleaching procedure was conducted according to the manufacturer's instructions. Retractor was set in place, the teeth were dried by air stream, the lips were lubricated with Vaseline, a cheek retractor was placed, and isolation was achieved using cotton rolls and the gingival soft tissues were isolated by protective Liquidam (Philips, Andover, MA), Labial surfaces of the teeth 11, 12, 21, 22 were then covered with whitening gel in about 1-2mm thick layer. one 20 min session was done.the bleaching gel was applied and agitated and then left on tooth surface for the period of the session
Locations (1)
Nahda University
Banī Suwayf, Beni Suweif Governorate, Egypt