From: The prevalence and pattern of deciduous molar hypomineralization and molar-incisor hypomineralization in children from a suburban population in Nigeria
Number of permanent first molar
Mean number of affected incisor
1
2.0 (±0.0)
2
2.0 (±1.2)
3
1.3 (±0.6)
4
2.2 (±1.1)