The severity and degree of hypomineralisation in teeth and its influence on oral hygiene and caries prevalence in children

Aim: The purpose of this study was to investigate the relationship between the severity of hypomineralised teeth, plaque accumulation, hypersensitivity, associated caries risk, and oral health-related quality of life limitations of affected children. Materials and Methods: A total of 250 children (mean age 9.0 years) presenting with at least one hypomineralised molar or incisor were included in the study. The hypersensitivity of the teeth was evaluated using the Schiff Cold Air Sensitivity Scale and the Wong-Baker Faces Scale. Furthermore, the Decayed, Missing, and Filled Teeth Index was documented, the Quigley Hein Index was obtained, and personal questioning was used to document the patients' limitations with intake of food. These data were analysed using general linear models that control influencing factors such as age and sex. Results: The Quigley Hein Index increased with the severity of the hypomineralised teeth (1.64 in the unaffected, 2.77 in the moderately, and 3.63 in the severely affected teeth). Problems with intake of food were only observed in subjects with severe hypomineralisation. There was no immediate effect on dental caries. Conclusion: Increased severity of tooth hypomineralisation leads to increased hypersensitivity, which resulted in inadequate oral hygiene among children and limitations to their daily life.