Efficacy of an Experimental Gel Based on Libidibia Ferrea on Post-bleaching Tooth Sensitivity
19 de mayo de 2026 actualizado por: Cecy Martins Silva, Universidade Federal do Para
Efficacy of an Experimental Gel Based on Libidibia Ferrea in Controlling Post-bleaching Tooth Sensitivity: a Randomized Clinical Trial.
This randomized, parallel, single-blind, placebo-controlled clinical trial aims to investigate the effects of an experimental 0.5% Libidibia ferrea gel on the control of post-bleaching tooth sensitivity and its influence on bleaching efficacy.
Seventy-five selected volunteers will be randomly allocated into three groups: CT (placebo gel), KF2 (5% potassium nitrate and 2% sodium fluoride), and JUC (experimental Libidibia ferrea gel).
Each group will receive the corresponding desensitizing treatment, and the assigned product will be actively applied to the labial surfaces of the anterior teeth and the buccal surfaces of the first premolars for 10 minutes.
Subsequently, all groups will undergo an in-office tooth bleaching protocol with 35% hydrogen peroxide, consisting of two sessions with three 15-minute applications each, with a 7-day interval between sessions.
Postoperative sensitivity will be recorded daily by the patients for 14 days using a visual analog scale (VAS), while tooth color will be measured using a spectrophotometer at baseline and one week after the end of treatment.
Data will be subjected to statistical analysis according to sample distribution, with a statistical power of 80% and a significance level of 5%.
Descripción general del estudio
Estado
Aún no reclutando
Intervención / Tratamiento
Descripción detallada
All groups will undergo in-office tooth bleaching treatment, performed in two sessions with a 7-day interval, according to the steps described below: prophylaxis; application of the desensitizing agent or placebo, according to the assigned group, for 10 minutes; rinsing with water; application of the gingival barrier; application of Whiteness HP 35% bleaching gel for 45 minutes, consisting of three 15-minute applications; final removal of the bleaching gel and gingival barrier, followed by rinsing with water.
A lip retractor will be used during the application of the desensitizing agent or placebo and throughout the bleaching procedure.
The assigned product will be actively applied using a microbrush.
Tipo de estudio
Intervencionista
Inscripción (Estimado)
75
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Estudio Contacto
- Nombre: Cecy M Silva
- Número de teléfono: +55 (91) 3201-7563
- Correo electrónico: cecymsilva@gmail.com
Ubicaciones de estudio
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Pará
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Belém, Pará, Brasil, 66075-110
- UFPA
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Contacto:
- Federal University of Pará
- Número de teléfono: 55(91) 3201-7390
- Correo electrónico: ppgo@ufpa.br
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Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
Acepta Voluntarios Saludables
No
Descripción
Inclusion Criteria:
Good oral hygiene; Absence of active caries lesions; No previous tooth bleaching treatment; Absence of dental hypersensitivity; Not being pregnant; Presence of at least 28 teeth in the oral cavity.
Exclusion Criteria:
Volunteers undergoing orthodontic treatment; Presence of periodontal disease; Dental cracks or fractures; Restorations or prostheses on anterior teeth; Extensive restorations in molars; Gastroesophageal disorders; Severe intrinsic tooth discoloration; Presence of dentin exposure in anterior and/or posterior teeth.
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Único
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Comparador de placebos: Placebo
The placebo group received an application of placebo gel for the control of post-bleaching tooth sensitivity.
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Before bleaching treatment with 35% hydrogen peroxide, participants in the placebo group received a placebo gel without active ingredients, applied under the same conditions described for the experimental gel.
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Comparador activo: KF2 - Potassium nitrate
The KF2 group received an application of 5% potassium nitrate and 2% sodium fluoride for the control of post-bleaching tooth sensitivity.
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Prior to bleaching treatment with 35% hydrogen peroxide, participants in the KF2 group will receive an application of a desensitizing gel containing 5% potassium nitrate and 2% sodium fluoride on the labial surfaces of the maxillary and mandibular central incisors, lateral incisors, and canines, and on the buccal surfaces of the maxillary and mandibular premolars, for 10 minutes.
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Experimental: Jucá - Libidibia ferrea gel
The Jucá group received an experimental 0.5% Libidibia ferrea gel for the control of post-bleaching tooth sensitivity.
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Prior to bleaching treatment with 35% hydrogen peroxide, participants in the Jucá group will receive an application of the experimental 0.5% Libidibia ferrea gel on the labial surfaces of the maxillary and mandibular central incisors, lateral incisors, and canines, and on the buccal surfaces of the maxillary and mandibular premolars, for 10 minutes.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Post-whitening sensitivity assessment
Periodo de tiempo: 14 days
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To assess postoperative sensitivity, patients will be instructed to complete a form to record daily tooth sensitivity during the 14-day treatment period, based on their individual perception of pain.
This form will be provided at each bleaching session and returned to the researcher at the following session, that is, one week after each bleaching session.
The assessment form will include a visual analog scale (VAS), consisting of a 10-cm horizontal line with scores of 0 and 10 at its ends, where 0 indicates no sensitivity and 10 indicates severe tooth sensitivity.
Patients will be instructed to draw a vertical mark along the horizontal line of the scale to record the intensity of tooth sensitivity each day.
Subsequently, the distance in millimeters from the zero endpoint will be measured using a millimeter ruler, thereby obtaining the patient's pain intensity score.
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14 days
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Color evaluation
Periodo de tiempo: Baseline (T0) and one week after the second bleaching session (T1)
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The VITA Easyshade spectrophotometer (VITA Zahnfabrik, Bad Säckingen, Germany) will be used for color measurement.
The evaluated tooth area will be the middle third of the labial surface of the maxillary canines.
To standardize color readings, silicone matrices will be fabricated, with the impression extending from canine to canine.
A window will be created on the labial surface of each canine in the silicone guide using a metal device with a 6-mm diameter, corresponding to the diameter of the spectrophotometer tip.
Thus, the tip of the device will be inserted into the silicone guide to obtain the color parameters.
Subsequently, the color difference between baseline (T0) and one week after the second bleaching session (T1) will be calculated using the CIEDE2000 formula (ΔE00).
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Baseline (T0) and one week after the second bleaching session (T1)
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Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Estimado)
13 de junio de 2026
Finalización primaria (Estimado)
30 de enero de 2027
Finalización del estudio (Estimado)
30 de marzo de 2027
Fechas de registro del estudio
Enviado por primera vez
13 de mayo de 2026
Primero enviado que cumplió con los criterios de control de calidad
13 de mayo de 2026
Publicado por primera vez (Actual)
20 de mayo de 2026
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
22 de mayo de 2026
Última actualización enviada que cumplió con los criterios de control de calidad
19 de mayo de 2026
Última verificación
1 de mayo de 2026
Más información
Términos relacionados con este estudio
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 95040526.4.0000.0018
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
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