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Completed

NCT Number: NCT02617940

Efficacy of Sealants in Cavitated Enamel Lesions on Occlusal Surfaces in Children

The aim of this study is to evaluate the efficacy of oral hygiene orientation singly, compared to resin-based sealants in controlling occlusal cavitated enamel lesions on primary and permanent molars. For this, 273 occlusal surfaces of primary molars and 273 occlusal surfaces of first permanent molars on 4-9 years-old children with an enamel cavitated lesion will be selected in 9 cities of Brazil. The surfaces will be randomly divides into 2 groups: oral hygiene orientation and resin-based sealant. The surfaces will be evaluated after 6 and 12 months regarding clinical and radiographic lesions progression. The costs and cost-efficacy of these treatments, children's discomfort, parents'/guardians' satisfaction and impact on quality of life will also be investigated. Poisson regression analysis will be performed in order to compare the groups, through clinical and radiographic criteria. This test will also be used to assess the association between the group and patient discomfort and parents' satisfaction. Time, costs and impact on quality of life of the treatments will be compared by Student's t test. For all analyses, the significance level will be set at 5%.

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Key information

Conditions

Fissure Sealants Dental Caries Oral Hygiene Orientation Stomatognathic Diseases Tooth Demineralization Tooth Diseases

Age range

4 year–9 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Jose Carlos Pettorossi Imparato

São Paulo, 05508000, Brazil

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • parents or legal guardians accept and sign the informed consent form.
  • children must have at least one molar with caries lesion classified as ICDAS active score 3.

Exclusion criteria

  • children with special needs and/or systemic diseases with oral impairment.
  • teeth with spontaneous painful symptoms or necrotized and teeth presenting restorations, sealants, cavitated caries lesions in dentin or other types of formation defects.

Treatment and study plan

fissure sealant

Other

Surfaces allocated to this group will be treated with resin-based sealant (FluroShield®, Dentsply, United States of America) according to the manufacturer's instructions.

Initially, local anesthesia and rubber dam adaptation will be performed. Then, 37% phosphoric acid will be applied on the surface for 30 seconds, followed by spray of water/air for at least 15 seconds. The sealant will be dispensed on the occlusal surface and light cured for 20 seconds (Optilight Max, Gnatus, Brazil).

oral hygiene orientation

Other

Surfaces allocated to this group will be treated with sterile water application, as a placebo, without anesthesia and rubber dam. The active treatment in this group will be only oral hygiene orientations.

Primary outcomes

  1. Sealants clinical efficacy

    Time frame: Every 6 months up to 12 months

    The clinical evaluation will be performed by one blinded examiner. If the surface is sealed, the examiner will classify it according to described by Pardi et al. (2005); if the surface is without material, the examiner will use the International Caries Detection and Assessment System (ICDAS) criteria (Ismail et al., 2007).

  2. Sealants radiographic efficacy

    Time frame: Every 6 months up to 12 months

    The radiographic evaluation will be performed by two blinded examiners, which will evaluate the four patients' radiographies independently, two by two, without knowing the chronological order of them. The efficacy of the treatment will be related to the presence or absence of increasing radiolucent area. They will also classify each radiograph using Ekstrand criteria (Ekstrand et al., 1997) and analyze them in a software (ImageJ 1.49, National Institute of Health, United States of America) in order to make the radiographic subtraction.

Secondary outcomes

  1. Sealants and oral hygiene orientation costs

    Time frame: Baseline

    Treatment costs will be calculated for each treatment technique considering professional costs and procedure costs. In order to calculate the professional cost, the time spent in each session will be converted in hours and multiplied by the medium income of the dentist per hour as related by the Brazilian Ministry of Labour and Employment. To estimate the procedure cost, it will be considered both variable cost, which includes electricity and equipment depreciation, and materials cost. To calculate the equipment depreciation (peripherals, dental chair and instrumental), we will consider their price, the lifespan of five years and a monthly use of 160 hours, resulting in an estimate value per hour. All materials used in each procedure will have their quantity registered. Prices will be inferences from the market value converted in US Dollars.

  2. Sealants cost-efficacy

    Time frame: Through study completion (12 months)

    The costs of each treatment procedure will be calculated and compared with threshold values for intervention cost-effectiveness by region, determined by World Health Organization (http://www.who.int/choice/costs/CER_levels/en/).

  3. Impact on children's quality of life of sealants or oral hygiene orientation

    Time frame: 6 and 12 months

    The oral health related to quality of life will be measured using a validated questionnaire according to the children's age. The Early Childhood Oral Health Impact Scale (ECOHIS) will be applied with 4-5 years old children and Child Perceptions Questionnaire will be used for 6-9 (CPQ8-10) years old children. They will be applied immediately before the procedure and on 6 months follow-up

  4. Children self-reported discomfort

    Time frame: Baseline

    The discomfort of each type of treatment will be evaluated using the facial scale of Wong-Baker (Wong, Baker, 1998). This scale indicates the discomfort of an individual who has to choose among six faces. The first image is a smiling happy face, indicating no discomfort, followed by gradually less cheerful expressions, up to the last one which is a very sad face covered by tears, indicating great discomfort. The participant will be asked to choose the face that is more similar to how he/she felt during the treatment immediately after the procedure. This answer should be given solely by the child, which means no parental or professional interferences.

  5. Parents' reported satisfaction with treatment

    Time frame: 6 months

    The parents'/guardians' satisfaction with treatment will be evaluated using a questionnaire. It will be applied only at the 6-months follow-up.

Sponsors and collaborators

Lead sponsor

Faculty Sao Leopoldo Mandic Campinas

Other

Registry information

Official study title

Effectiveness of Sealants in Cavitated Enamel Lesions on Occlusal Surfaces of Primary and Permanent Molars in Children

Acronym: SLM1661

Important dates

Study start
2015
Primary completion
2015
Study completion
2016
First posted
Dec 1, 2015
Registry last updated
May 5, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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