molar incisor hypomineralisation

Question 1

hall technique

Answer 1

technique for crown application on primary molars
requires no preparation or LA , separators are used if contacts are an issue
glass ionomer is used as a cement

Question 2

conventional crown prep

Answer 2

tooth reduced mesially and distally to remove contacts and also about 1-2mm occlusal reduction

Question 3

molar incisor hypomineralisation

Answer 3

developmental condition that presents in childhoos and sees areas of poorly formed enamel on one or more first permanent molars and somtimes incisors also

Question 4

hypomineralised

Answer 4

nomrla shape and bulk of enamel however disturbance during formation sees decreased mineral content and therefore strength

Question 5

Hypoplastic (plasia) teeth

Answer 5

reduced bulk or thickness but correct mineralisation
true - secretory phase error so enamel never formed
acquired - post eruptive loss of enamel bulk

Question 6

what causes MIH

Answer 6

no definitve cause
critical period = first year of life
possibilities include prolonged breastfeeding and childhood infections e.g measles

Question 7

yellow brown patches of MIH

Answer 7

affect superficial layers of enamel

Question 8

white /cream patches of MIH

Answer 8

affect inner layers of enamel

Question 9

why does MIH cause problems

Answer 9

more susceptible to caries
softer enamel therefore increased wear experienced
sensitivity
appearance issues

Question 10

treatment of MIH molars

Answer 10

restorations or crowns but end result usually extraction
can be done to coincide with ortho instead of extracting traditional premolars
lower 1sts should be extracted when calcification of bifurcation occurs in lower 7s so gap will fill
timing not as crucial in uppers

Question 11

treatment of MIH incisors

Answer 11

microabrasion , bleaching , composite , veneers