Molar-Incisor Hypomineralization: Prevalence Comparative Study in 6 Years of Interval

Table 6

Descriptive data of two prevalence studies carried out in the city of Araraquara, with an interval of 6 years.

Survey	2010	2016
Prevalence	12.3%	14.3%
Affected teeth (mean)	3.32	2.78
Teeth with opacities (%)	90.7	82.0
Teeth with structural loss (%)	5.3	14.2
Teeth with atypical restoration (%)	4.0	3.8
Children with MIH in molar (%)	48.6	66.7
Children with MIH in molar and incisor (%)	51.4	33.3
Significant association of MIH with dental caries	Permanent dentition	No
Mean DMFT in children with MIH	0.89 (±1.18)	0.33 (±0.75)
Mean dmft in children with MIH	1.24 (±1.82)	1.45 (±2.48)
Significant association of MIH and other DDEs in primary dentition	No	No

DDEs: developmental defects of the enamel.