Impact of Glass-Hybrid Restoration on Occlusal Force Distribution and Masticatory Muscle Activity in Children With Molar-Incisor Hypomineralization
Impact of Restorative Treatment on Occlusal Characteristics and Masseter Muscle Activity in Children With Molar-Incisor Hypomineralization: A T-Scan and sEMG Pilot Study
Marmara University
5 participants
Jan 10, 2026
INTERVENTIONAL
Conditions
Summary
This prospective pilot study evaluates the effect of restoring symptomatic, carious molar-incisor hypomineralization (MIH)-affected permanent molars using a glass-hybrid restorative material on occlusal force distribution and masticatory muscle activity. Digital occlusal analysis using the T-Scan system and surface electromyography (sEMG) recordings of the masseter and anterior temporalis muscles are performed before treatment and three months after restoration. Hypersensitivity is assessed using the Schiff Cold Air Sensitivity Scale.
Eligibility
Inclusion Criteria6
- Children aged 7 to 13 years
- Diagnosis of molar-incisor hypomineralization (MIH) according to the criteria of Ghanim et al.
- Presence of at least two MIH-affected first permanent molars with post-eruptive enamel breakdown requiring restorative treatment
- Presence of dentin hypersensitivity in the affected molars
- Ability to comply with T-Scan and surface electromyography (sEMG) recording procedures
- Written informed consent obtained from parents or legal guardians, and assent from the child
Exclusion Criteria7
- Previous or ongoing orthodontic treatment
- Presence of craniofacial anomalies or syndromes
- Diagnosis of temporomandibular disorders
- Parafunctional habits (e.g., bruxism)
- Clinically evident facial asymmetry
- Malocclusions such as crossbite or open bite
- Systemic diseases or medications affecting neuromuscular function -Inability to cooperate with functional assessment procedures -
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Interventions
Selective caries removal followed by bulk-fill glass-hybrid restoration of MIH-affected first permanent molars using Equia Forte®. The procedure is performed by a calibrated pediatric dentist according to the manufacturer's instructions. Occlusion is checked and adjusted after restoration prior to functional assessments.
Locations(2)
View Full Details on ClinicalTrials.gov
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NCT07336212