MIH Flashcards
What are the treatment options for MIH affected incisors?
Acid pumice microabrasion
External bleaching
Composite or porcelain veneers
What is the difference in MIH enamel and normal enamel?
MIH enamel: higher carbon content lower calcium & phosphate content (21% less mineral) normal thickness porous
What is the difference in pulp of MIH affected teeth?
Increased neural density (innervations)
Increased immune cell accumulation
Increased vascularity
MIH affected teeth are either yellow/brown or white/cream, what is the difference?
Yellow/brown - more porous, whole enamel layer affected
White/cream - inner parts of enamel affected
What are the clinical problems of MIH?
Teeth less mineralised & softer - more prone to fracture
Enamel is porous - sensitive, tooth brushing difficult, difficult to achieve LA
Bond strength of restorations reduced - debond, secondary caries
Children may develop dental anxiety
Cosmetic concern if incisors affected
What are the symptoms of MIH?
Teeth sensitive to cold or touch
Teeth decay very quickly
Child around 6-8.5 years old
What questions would you ask a mother about the pregnancy if child has MIH?
Vitamin D deficiency
Medication taken by mother
Difficult pregnancy
What questions would you ask the mother about the birth if the child has MIH?
Premature birth
Traumatic birth
What questions would you ask the mother about birth to 2years if the child has MIH?
Childhood illness (fever, measles, rubella, chicken pox)
Prolonged breastfeeding, dioxins in breastmilk
Medications
Nutritional disturbances
When do FPM’s erupt?
Age 6
When do permanent central incisors erupt?
Lowers 6-7 years
Uppers 7-8 years
When do permanent lateral incisors erupt?
Lower 7-8 years
Upper 8-9 years
When do FPM’s start to mineralise?
6-7 months of pregnancy
When do permanent incisors begin to mineralise?
5 months after birth
What is hypoplastic?
Reduced bulk or thickness of enamel.
Can be true (enamel never formed) or acquired (enamel formed but has reduced in bulk since).
