Hypomineralization Molar Incisor Clinical Trial
Official title:
Effectiveness of Laser Therapy Associated With Fluoride Therapy in Hypomineralized Teeth Desensibilization: Randomized Clinical Trial
To investigate the efficacy of laser therapy associated with fluorotherapy in the desensibitization of hypomineralized teeth in children 8 to 12 years of age. A randomized blinded clinical trial will be conducted. The instruments used will be a questionnaire general, clinical examination, dental air syringe (evaluation of dental sensitivity) and visual analogue scale (evaluation of the magnitude of dental sensitivity). Teeth with hypomineralization molar-incisor (HMI) and the results of sensitivity and magnitude of dental pain before and after the treatments will be recorded in a clinical record. The study groups will be: treatment with laser therapy (Group 1); treatment with fluorotherapy (Group 2) and treatment with laser therapy and fluorotherapy (Group 3).
A blinded randomized clinical trial will be conducted. The study will be conducted with
children attending the Pediatric Dentistry Clinic of the Florence Institute's undergraduate
course, in São Luís, Maranhão, Brazil. As inclusion criteria, children from 8 to 12 years of
age will be adopted, with at least one first permanent or incisive erupted incisor (with
occlusal / incisal surface free of gingiva) present in the oral cavity and presenting
sensitive hypomineralization lesions. Exclusion criteria will be children with enamel
malformations linked to syndromes, with dental fluorosis, enamel hypoplasia or with imperfect
amelogenesis, teeth with loss of structure dental and carious lesions, children in
orthodontic treatment, children with cognition problems, children who used any type of
analgesic / anti-inflammatory medication before treatment, children undergoing desensitizing
treatment in the last 3 months, children with behavioral problems and children with occlusal
problems such as tightening and bruxism.
The instruments of data collection will be a general questionnaire (demographic,
socioeconomic and etiological factors for HMI), clinical examination for diagnosis of HMI,
dental sensitivity test with air syringe and visual analogue scale (to assess the magnitude
of pain). In a clinical file will be recorded the teeth with HMI, the result of the
sensitivity test and magnitude of dental pain before and after treatments. The general
questionnaire will be answered by the parents / guardians. In cases of incomplete
questionnaires, parents / guardians will be contacted by telephone.
The diagnosis of HMI will be performed according to the criteria proposed by the European
Academy of Child Dentistry (WEERHEIJM et al., 2003). The researcher will be calibrated for
the application of the questionnaire and for the diagnosis of HMI lesions.
The study groups will be: treatment with laser therapy (Group 1); treatment with
fluorotherapy (Group 2) and treatment with laser therapy and fluorotherapy (Group 3). For the
treatment of group 1, the low-power, infrared (808nm wavelength) diode laser with a power of
100mW will be used. The mode of irradiation is punctual, in contact and perpendicular to the
dental surface. Three points on the crown of multiradicular teeth (mesial and distal of the
cervical region and central part of the tooth lesion) and two points on the crown of
unirradicular teeth (central point of the cervical region and central part of the tooth
lesion) will be irradiated for 10s per point , 1J per point, with a 72-hour interval between
treatment sessions. The distance between the irradiation points will be about 2 mm. The tip
of the laser equipment will be positioned perpendicular to the application site. The
treatment of Group 2 will be carried out with the application of fluoride varnish, with the
aid of a microbrush. After the application, water will be dripped onto the applied varnish in
order to promote its drying. Fluorotherapy will be performed once a week, totaling 4
sessions. Group 3 will be treated first with the laser (same specifications as Group 1),
followed by application of fluoride varnish (same specifications as Group 2).
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