Three Approaches of Resin Infiltration for MIH Incisor Opacities

In this randomized controlled trial, patients aged 8-14 years suffering from demarcated enamel opacities in permanent incisors of MIH patients will be randomly divided into three groups according to surface treatment.

The first group will receive microabrasion, the second group will receive microabrasion and etch-bleach surface treatments while the third group will receive macroabrasion surface treatment. Resin infiltration will be then applied to all groups with prolonged infiltration time for 30 minutes.

Color changes will be assessed using Vita easy shade whereas oral health related quality of life will be assessed using Child Oral-Health-Related Quality of Life Questionnaire. Assessment will be done before, immediately after; and 1, 3, 6 and 12 months after treatment protocol in all groups.

Inclusion criteria

• Cooperative healthy male and female children aged 8 to 14 years.
• MIH diagnosed patients according to the criteria of European Academy of Pediatric Dentistry (EAPD) with demarcated enamel opacity that caused esthetic discomfort to them and their guardian, involving at least one maxillary or mandibular permanent incisor.
• At least one-third of the affected tooth crown should be visible in the oral cavity.

Exclusion criteria

• Children with behavioral, cognitive, physical, or medical conditions that will affect or complicate the treatment.
• Other developmental defects of dental enamel rather than MIH (i.e. dental fluorosis, enamel hypoplasia, amelogenesis imperfecta or Turner's tooth)
• Loss of tooth structure due to post-eruptive enamel breakdown or caries.
• Periodontal disease of the affected tooth.
• Incisors previously subjected to trauma that might lead to loss of tooth structure or compromise the pulp vitality.
• Previous preventive, restorative or orthodontic treatment on the affected tooth.