Soft and porous enamel is the hallmark of Molar Hypomineralisation. Unsurprisingly then, a most serious aspect of Molar Hypomineralisation is the lifelong risk it brings for dental caries (tooth decay) – in absence of dental intervention, caries is an almost inevitable consequence in moderate/severe cases. Caries may in turn lead to major disruption or even loss of affected molars, often necessitating input from Dental Specialists where available (e.g. Paediatric Dentist, Orthodontist, Prosthodontist, Endodontist). On its own, Molar Hypomineralisation often causes sufficient dental pain (toothache) to interfere with eating, drinking and oral hygiene. Cosmetic issues can also arise, particularly when the front teeth are affected too (MIH). As with caries, these lifelong issues can lead to
quality-of-life problems including behavioural lapses and absences
from school or work.

The specific risks and liabilities associated with Molar Hypomineralisation have
been addressed in several studies including the following: 



  • In Western Australia, 6-year-old children with Molar Hypomineralisation were found to be at 14-fold increased risk of caries (i.e. DMFT) when compared to those lacking this developmental defect (read more)
  • In Wainuiomata (near Wellington, NZ), 7- to 10-year-old children exhibited over 11-fold increased risk of caries if their Molar Hypomineralisation was severe whereas mild/moderate cases had 3-fold higher risk when compared to those without Molar Hypomin. (read more)
  • In a forthcoming report by members of The D3 Group, a modelling analysis predicts that well over half of the caries in 7-year-olds from
    Western Australia can be accounted for by Molar Hypomineralisation
    (MJ Hubbard et al., manuscript in preparation)


Boy In Chair - Dental treatment

  • In a Greek study, children with Molar Hypomineralisation had 11 times the chance of requiring dental restorations when compared to a control group (read more)
  • A Swedish study found that, by the age of 9, children with Molar Hypomineralisation had undergone nearly 10 times the treatment on their first permanent molars when compared to healthy controls.  Moreover, on average, every defective tooth had been treated twice (read more)






  • In Sweden, a study investigating spontaneous closure of the gap created by extraction of first permanent molars found that nearly half of the children required future orthodontic treatment. Nearly half of this group (20% of total sample) required orthodontic treatment specifically related to their molar extractions (read more)
  • The timing of extraction of first permanent molars affects the future need for orthodontics, with one study finding that extractions at the age of 8 to 10 years of age provided the best orthodontic results (read more)