primary tooth morphology Flashcards
what differences can you see between primary and permanent crowns?
primary incisors are smaller in crown and root proportions
primary molars are wider mesio-distally than permanent molars
primary molar crowns are more bulbous
whiter primary teeth
what anatomical feature gives away a maxillary and mandibular primary first molar
pronounced tubercle on the mesiobuccal aspect
what anatomical feature gives away a primary mandibular second molar
3 buccal cusps
what anatomical feature gives away a mandibular primary second molar
transverse ridge running across the tooth
what are the differences in root between primary and permanent teeth?
roots in primary teeth are more ribbon-like with many small accessory canals.
impossible to fully clean
what are the differences in the pulp chamber between primary and permanent teeth?
pulp chamber and horns are much larger / greater to occlusal surface in primary teeth
what difference can be seen in enamel and dentine between primary and permanent teeth?
thinner enamel and constant thickness throughout
coronal dentine much thinner than in permanent teeth
what is the anthropoid/primate spacing? where can it be found?
space between teeth to allow for expansion
mandible = distal to mandibular canine
maxilla = mesial to mandibular canine
when may someone be in the mixed dentition stage?
6-11 years
order of eruption for maxillary permanent teeth?
6,1,2,4,5,3,7,8,
order of eruption for mandibular permanent teeth?
6,1,2,3,4,5,7,8
how does the eruption path of incisors change in the permanent dentition?
incisors erupt more proclined as they develop palatal to roots of primary incisors
when does root formation complete usually?
3 years for permanent teeth usually
1.5 for primary
