Sensitivity, Tooth
Conditions
Keywords
Tooth bleaching, Vital bleaching, Desensitizing agents, Tooth sensitivity
Brief summary
The main objective of this study is to evaluate if the use of UltraEZ during at-home bleaching treatment is effective in reducing tooth sensitivity, as well as doesn't affect the degree of tooth bleaching.
Detailed description
1. Visit 1: Study information and delivery of informed consent. Recording of the patient's medical history, general examination, and prophylaxis. Alginate impressions will be taken of the upper and lower arches for all patients who meet the inclusion criteria. The impressions will be poured into plaster, and individualized bleaching trays will be made for each patient. A positioning guide tray will be fabricated for color measurement. 2. Visit 2: Initial color measurement with a spectrophotometer and the positioning guide. Each patient will receive their individualized trays. Additionally, they will be given 3 syringes of bleaching agent (Opalescence 16%, Ultradent Products) and one syringe of desensitizing agent (UltraEZ, Ultradent Products) or placebo (glycerin), according to their study group. Both the desensitizing agent and placebo will be dispensed in identical syringes, coded as A and B, to ensure the blinding of the study; only the clinician responsible for randomization knows the coding. Each patient will be provided with an instruction sheet and recording sheets to fill out daily during the 3-week study period. They will record the degree of dental sensitivity . 3. Visit 3: First-week bleaching review. Data collection (color + sensitivity). 4. Visit 4: Second-week bleaching review. Data collection (color + sensitivity). 5. Visit 5: Third-week bleaching review and end of the study. Data collection (color + sensitivity).
Interventions
DRUGUltraEZ
General examination with bite-wings. Dental prophylaxis (dental scaling and polishing with an abrasive paste). Alginate impressions of both arches. Creation of individualized bleaching trays and a position-finder tray of both arches. Application of the UltraEZ gel in the bleaching trays for 30 minutes. Application of the bleaching gel in the bleaching trays during 6-8 hours
DRUGPlacebo
General examination with bite-wings. Dental prophylaxis (dental scaling and polishing with an abrasive paste). Alginate impressions of both arches. Creation of individualized bleaching trays and a position-finder tray of both arches. Application of the placebo gel in the bleaching trays for 30 minutes. Application of the bleaching gel in the bleaching trays during 6-8 hours
Sponsors
University of Santiago de Compostela
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Intervention model description
Randomized, triple-blind clinical trial
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* No oral or systemic pathology * Periodontally healthy * No cavities * Tooth shade of the upper and lower canines A2 or darker
Exclusion criteria
* Adhesive restorations or prostheses in the anterior region * Enamel or dentin alterations * Smoking * Pregnant women * Undergone prior bleaching treatment
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Questionnaire of dental sensitivity | Daily, during 3 weeks | Patients should answer a dental sensitivity questionnaire. A a 5-point subjective numerical classification scale will be used (0=no sensitivity, 1=light, 2=mild, 3=considerable and 4=severe). Patients will a score of 0 during the treatment will be defined as patients with no sensitivity. The individual highest recorded score will be the grade of intensity for each patient. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Shade evaluation with a dental spectrophotometer | Once a week, during 3 weeks | The color will be measured with a dental spectrophotometer and the parameters L (Lightness), C (Chroma) and H (Hue) will be recorded. To determine the color change between visits the CIEDE2000 formula will be used. |
Countries
Spain
Outcome results
None listed