Control of Pain Due to Dentin Hypersensitivity in Individuals With Molar-incisor Hypomineralization

NCT04407702 | Unknown Phase 1

• 1 other identifier: Hypersensitivity
• Study Type: interventional
• Target: 140
• Locations: 0 countries
• Sites: N/A

Brief Summary

Background: Dentin hypersensitivity (DH) is defined as high sensitivity of the vital dentin when exposed to thermal, chemical or tactile stimuli. Two mechanisms are required for the occurrence of DH: 1) the dentin must be exposed and 2) the dentinal tubules must be open and connected to the pulp. Molar-incisor hypomineralization (MIH) is a qualitative abnormality of a genetic origin that affects tooth enamel and, in most cases, is accompanied by DH. The control of tooth sensitivity is fundamental to the successful treatment of MIH. Objective: The aim of the proposed randomized, controlled, clinical trial is to evaluate the effectiveness of different protocols for the control of DH in patients with teeth affected by MIH. Methods: One hundred forty patients who meet the inclusion criteria will be allocated to four groups. Group 1 will be the control group (placebo). In Group 2, sensitive teeth will be sealed with Permaseal (Ultradent). In Group 3, sensitive teeth will receive low-level laser (LLL) (AsGaAl) at a wavelength of 780 nm (Laser XT Therapy, DMC, São Carlos, SP, Brazil). In Group 4, sensitive teeth will be treated with both LLL and Permaseal (Ultradent). DH will be evaluated 15 min after the application of the treatments and the patients will be reevaluated one week, one month, three months and six months after the treatments. Discussion: This study will enable the determination of differences in the effectiveness of the proposed treatments as well as differences among the evaluation times for each proposed treatment.

Conditions

Dentin Sensitivity; Molar Incisor Hypomineralization

Outcome Measures

Primary Outcomes (1)

• Change in pain evaluated through a Visual Analog Scale (VAS)

  The researcher will assess the sensitive tooth using cold air from the triple syringe (2 s of compressed air at a pressure of approximately 40 psi with the syringe perpendicular to the tooth surface at a distance of approximately 0.5 cm). Neighboring teeth will be protected with cotton rolls or the examiner's fingers9. The volunteer will then indicate a whole number between 0 (absence of pain) to 10 (worst pain possible) on the 10-cm VAS scale that best describes his/her perception of pain.

  Baseline, one week, one month, three months and six months after the final treatment session.

Study Arms (4)

Control Group

EXPERIMENTAL

The volunteers in this group will receive the same hygiene instructions as the other groups and will undergo both treatments, except that water will be used instead of the sealant and the laser device will be set to a power of 0 W. In other words, the same irradiation procedure will be performed but without the emission of light.

Other: Hygiene Instructions

Sealant Group

EXPERIMENTAL

The volunteers in this group will receive treatment with sealant (Permaseal - Ultradent), which is a photopolymerizable methacrylate-based resin.

Other: Hygiene Instructions; Procedure: Sealant application

Low-Level Laser Group

EXPERIMENTAL

The volunteers in this group will receive irradiation with AsGaAl laser at a wavelength of 780 nm (Laser XT Therapy, DMC, São Carlos, SP, Brazil) with relative isolation.

Other: Hygiene Instructions; Radiation: Low-level Laser

Low Level Laser + Sealant Group

EXPERIMENTAL

The volunteers in this group will receive the same irradiation administered to Low-level Laser Group. During the last session, these volunteers will also receive the same sealant applied in Sealant Group.

Other: Hygiene Instructions; Procedure: Sealant application; Radiation: Low-level Laser

Interventions

Hygiene Instructions OTHER

Two weeks prior to the onset of the study, the volunteers will undergo a wash-out period, in which they will only use oral hygiene products donated by the researchers. These products will be used through to the end of the study. The oral hygiene kit will contain a soft-bristle toothbrush (Professional Lab Series, Colgate Palmolive), fluoride toothpaste with no desensitizing agent (Elmex) and dental floss (Colgate). The participants will be extensively trained with regards to all procedures involved in the experiment.

Control Group; Low Level Laser + Sealant Group; Low-Level Laser Group; Sealant Group

Sealant application PROCEDURE

The teeth to be sealed will be isolated and 35% phosphoric acid will be applied for 20 seconds, followed by rinsing and drying the dental surfaces. A thin layer of PermaSeal will be applied to the tooth surface for 5 seconds and photopolymerized for 20 seconds. The occlusion will then be evaluated.

Low Level Laser + Sealant Group; Sealant Group

Low-level Laser RADIATION

Irradiation with AsGaAl laser at a wavelength of 780 nm (Laser XT Therapy, DMC, São Carlos, SP, Brazil) with relative isolation. The power will be set to 100 mW; energy density will be 35 J/cm2 (considering a spot size of 0.028 cm2 of the equipment) and the dose will be 1 J per point. Irradiation will be performed on a cervical point, an apical point and a point precisely over the lesion, totaling a dose of 3 J. Treatment will be performed in three sessions with a 72-hour interval between sessions.

Low Level Laser + Sealant Group; Low-Level Laser Group

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Age between 18 and 35 years;
• Good overall health;
• At least one tooth with MIH and DH reported in the cervical region with sensitivity equal to or greater than 4 on the VAS.

You may not qualify if:

• Active caries or defective restorations on the tooth to be analyzed;
• Sufficient dentin loss that requires restorative treatment or periodontal surgery;
• Having undergone any professional desensitizing treatment in the previous six months;
• Having used a desensitizing paste in the previous three months;
• Use of anti-inflammatory drugs or analgesics at the time of recruitment;
• Currently pregnant or nursing.

Sponsors & Collaborators

• University of Nove de Julho: lead

Related Publications (1)

• Sobral APT, Santos EM, Aranha AC, Soares PV, Moriyama CM, Goncalves MLL, Ribeiro RA, Motta LJ, Horliana ACRT, Fernandes KPS, Mesquita-Ferrari RA, Bussadori SK. The control of pain due to dentin hypersensitivity in individuals with molar-incisor hypomineralisation: a protocol for a randomised controlled clinical trial. BMJ Open. 2021 Mar 10;11(3):e044653. doi: 10.1136/bmjopen-2020-044653.

  PMID: 33692185 DERIVED

MeSH Terms

Conditions

Dentin Sensitivity; Molar Hypomineralization

Interventions

Low-Level Light Therapy

Condition Hierarchy (Ancestors)

Tooth Diseases; Stomatognathic Diseases; Dental Enamel Hypomineralization; Developmental Defects of Enamel; Tooth Abnormalities; Stomatognathic System Abnormalities; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities

Intervention Hierarchy (Ancestors)

Laser Therapy; Therapeutics; Phototherapy

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Masking Details: All volunteers and the evaluator of the degree of sensitivity will be blinded to the allocation. The researcher in charge of applying the products will not be blinded due to the different forms of clinical manipulation of the products.
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: May 25, 2020
• First Posted: May 29, 2020
• Study Start: January 1, 2021
• Primary Completion: August 30, 2021
• Study Completion: December 10, 2021
• Last Updated: November 30, 2020

Record last verified: 2020-11

Data Sharing

• IPD Sharing: Will share