NCT07336212

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

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 5 (estimated)
• Sponsor: Marmara University · Academic / Other
• Sex: All
• Age: 7 Years – 13 Years
• Healthy volunteers: Not accepted

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.

Detailed description

This single-arm prospective pilot study investigates whether restorative rehabilitation of MIH-affected permanent molars leads to functional improvements in occlusal balance and neuromuscular activity. Children aged 7-13 years with symptomatic MIH requiring restorative treatment undergo standardized glass-hybrid restorations. Functional occlusal analysis is conducted using the T-Scan Novus system to assess lateral occlusal force distribution, while bilateral surface electromyography (sEMG) evaluates masseter and temporalis muscle activity during maximum voluntary clenching. Dentin hypersensitivity is assessed using the Schiff Cold Air Sensitivity Scale. Pre- and post-treatment outcomes are compared to explore early functional adaptation following MIH rehabilitation.

Conditions

• Molar-Incisor Hypomineralization (MIH)

Interventions

Type	Name	Description
PROCEDURE	Glass-Hybrid Restoration	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.

Timeline

• Start date: 2026-01-10
• Primary completion: 2026-04-15
• Completion: 2026-04-20
• First posted: 2026-01-13
• Last updated: 2026-03-17

Locations

2 sites across 1 country: Turkey (Türkiye)