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Hypersensitivity in teeth affected by molar-incisor hypomineralization (MIH)
Thomas Linner1, Yeganeh Khazaei1, Katharina Bücher1
1Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians University of Munich, Munich, Germany.
Scientific Reports
|September 10, 2021
Summary
Molar-incisor hypomineralization (MIH) often causes tooth hypersensitivity, especially in molars with enamel breakdown. Older patients and those with less severe MIH experienced less sensitivity.
Area of Science:
- Dentistry
- Pediatric Dentistry
- Dental Biomaterials
Background:
- Molar-incisor hypomineralization (MIH) is a developmental defect affecting enamel quality.
- Tooth hypersensitivity is a frequent complaint among individuals with MIH.
Purpose of the Study:
- To investigate the relationship between patient and tooth characteristics and hypersensitivity intensity in MIH-affected teeth.
- To compare hypersensitivity levels in MIH teeth versus healthy controls.
Main Methods:
- Clinical study involving 57 MIH patients and 20 healthy controls.
- Assessed 350 MIH-affected and 193 healthy teeth.
- Measured hypersensitivity using the Schiff Cold Air Sensitivity Scale (SCASS) and Visual Analogue Scale (VAS) after cold air stimulation.
Main Results:
- Healthy teeth showed minimal hypersensitivity (97.9% zero SCASS/VAS).
- MIH teeth with demarcated opacities and atypical restorations exhibited moderate hypersensitivity.
- Teeth with enamel breakdown were strongly associated with severe hypersensitivity.
Conclusions:
- MIH-related tooth hypersensitivity is significantly linked to enamel disintegration and molar location.
- Older age (≥8 years) was associated with reduced hypersensitivity in MIH patients.
- Hypersensitivity in MIH-affected molars with disintegration appears shortly after tooth eruption.
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