molar hypomineralization Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Conditions
Interventions
This is a two-arm, randomized, double-blind controlled clinical trial. Participants will be randomly allocated into two groups based on the assessment of anterior teeth. Demarcated opacities (white-cr
therefore, the infiltration pattern will vary for each tooth. Once the desired masking effect is achieved, the application time will be recorded for subsequent analysis, followed by light curing for 4
Sponsors
Universidade de São Paulo
Universidade de São Paulo
Eligibility
Age
6 Years to 14 Years
Inclusion criteria
Inclusion criteria: Individuals aged between 6 and 14 years who present at least one permanent incisor with molar-incisor hypomineralization opacities of white-cream and yellow-brown coloration.
Exclusion criteria
Exclusion criteria: amelogenesis imperfecta; tetracycline staining; hypoplasia; fixed orthodontic appliances; previous restorations; dental caries; opacities restricted only to anterior teeth; teeth with post-eruptive fracture; patients whose parents do not allow participation
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Quantitative color change assessment will be performed using a spectrophotometer (EasyShade, Vita Zahnfabrik), according to the CIE Lab color system (Commission Internationale de l’Eclairage). The L parameter corresponds to lightness (0 = black and 100 = white), while a* and b* represent the red–green and yellow–blue axes, respectively. Color variation (?E) will be evaluated in both the opacity and the sound enamel area before and after treatment, as well as at follow-up periods (1 month, 3 months, and 6 months). A reference ?E value of 3.7 will be adopted, as this threshold is considered clinically acceptable (Hoan et al., 2024). Therefore, ?E values lower than 3.7 will indicate that the lesions achieved a masking effect, whereas values greater than 3.7 will indicate no change in opacity. | — |
Secondary
| Measure | Time frame |
|---|---|
| Qualitative color change analysis will be performed using paired assessment. Baseline and follow-up photographs will be arranged side by side in Microsoft PowerPoint. Two experienced, blinded examiners will independently evaluate the images and classify the treatment outcome as: (1) complete masking (the opacity is no longer perceptible), (2) partial masking (the opacity has decreased or approximated the tooth color but remains perceptible), and (3) no masking (no change in the color or size of the opacity). | — |
Countries
BR
Contacts
Public ContactAna Boteon
Faculdade de Odontologia de Bauru - Universidade de São Paulo
Outcome results
None listed