The Strontium Chloride Associated With Photobiomodulation in the Control of Post-bleaching Sensitivity

Universidade Federal do Para

Status: Completed

Conditions: Dentin Sensitivity

Treatments: Other: FBM+ESTRÔNCIO; Other: FBM; Other: PLACEBO (Negative Control); Other: ESTRÔNCIO

Study type: Interventional

Funder types: Other

Identifiers

NCT04356911

UFPara-007

Details and patient eligibility

About

This study investigated the effects of the association of strontium chloride with photobiomodulation on the dental bleaching process, testing the hypothesis that they may control dental sensitivity post-bleaching teeth.

Full description

The objective of this double-blind, randomized, controlled clinical study was to evaluate the effect of 10% strontium chloride associated with photobiomodulation (FBM) on teeth exposed to 35% hydrogen peroxide during 3 weeks of whitening treatment. Methods: 50 volunteers were evaluated by the split mouth model, where the hemiarchy patients were randomized and subsequently allocated to one of the experimental groups: PLACEBO (negative control) - group with no desensitizing treatment, only bleached; FBM (positive control) - group treated with placebo gel and application of the LLLT (Low Level Laser Therapy); ESTRÔNCIO (positive control) - group treated with 10% strontium chloride and simulation of LLLT application (without light emission); and FBM + ESTRÔNCIO - group treated with LLLT + 10% strontium chloride.

Enrollment: 50 patients

Sex: All

Ages: 18 to 31 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• good oral hygiene
• absence of active caries lesions
• never having undergone previous whitening therapy
• not present dental hypersensitivity
• don't be a smoker
• not be pregnant
• present at least 28 teeth in the oral cavity.

Exclusion criteria

• volunteers who were under orthodontic treatment,
• presence of periodontal disease
• dental cracks or fractures
• restorations and prostheses on anterior teeth
• extensive molar restorations
• gastroesophageal disorders
• severe internal dental darkening
• presence of dentinal exposure in anterior and / or posterior teeth.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Double Blind

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50 participants in 4 patient groups, including a placebo group

PLACEBO (Negative Control)

Placebo Comparator group

Description:

The dental elements of this group had no desensitizing treatment. After whitening therapy, a water-soluble placebo gel (KY®, Johnson \& Johnson, SP, Brazil) was applied to dental oral surfaces, then the laser tip was positioned at two points, apical and cervical, without emitting light (placebo), simulating the application of Low Level Laser Therapy (LLLT).

Treatment:

Other: PLACEBO (Negative Control)

FBM

Experimental group

Description:

The group received the application of a placebo gel associated with LLLT after office bleaching.

Treatment:

Other: FBM

ESTRÔNCIO

Experimental group

Description:

After whitening in-office bleaching, the group was treated with desensitization to 10% strontium chloride. Subsequently, a laser tip was positioned at two points (apical and cervical), without emitting light (placebo).

Treatment:

Other: ESTRÔNCIO

FBM+ESTRÔNCIO

Experimental group

Description:

After whitening in the office, the group received a 10% strontium chloride desensitizer associated with low level light therapy.

Treatment:

Other: FBM+ESTRÔNCIO