4D 2.5 Development from Primary to Adult Flashcards
which system referes to the primary dentition as number/alpahbet
alphabet = sigmondy
numbers fdi
which tooth is being represented
upper right primary canine
which tooth is being represented
lower left primary canine
how are primary teeth different to the permanent teeth
roots are more divergent
smaller
bulbous crown
whiter
exfoliate
bigger pulp horns/chamber
how is the primary maxillary central incisor different to its permanent counterpart
Bulbous
Wide (width > height)
Incisal asymmetry
No mamelons
Clear cingulum
Bulbous cervical margin
Labial root curve
compare Primary maxillary lateral vs central incisor
Similar features, except
– Disto-incisal angle more rounded
– Crown narrower (width < height)
comapre primary mandibular incisors to permanent
similar re;ationship as in permanent incisors
describe the primary maxillary canines
Often symmetrical crown
If asymmetry: – The mesial > distal slope
Cervical bulge
primary mandibular canines compared to maxillary canine
Smaller and slimmer
Mesial < distal slope
D root curvature
Root curves slightly labially
maxillary 1st primary molar
3 divergent roots - mesio buccal, disto buccal and palatal
2 main cusps - mesio buccal and mesio palatal
key feature - mesio-buccal tubercle
Maxillary 2nd primary molar
– 3 roots
– 4 cusps
– Often cusp of carabelli on mesio-palatal cusp
Roots thin and divergent
Bulge on mesio-buccal aspect
Mandibular 1st primary molar
Crown longer mesio-distally
Narrow occlusal table
4 cusps: – 2 buccal (larger) – 2 lingual (small) – Mesio-buccal largest
Mesio-buccal molar tubercle (of zuckerkandl)
2 roots
Mandibular 2nd primary molar
Similar to lower 6 – 5 cusps – 2 roots
Buccal cusps more even sized
Mesial root flattened
at what age is the dentition at
at what age is the dentition at
at what age is the dentition at
at what age is the dentition at
at what age is the dentition at
at what age is the dentition at
at what age is the dentition at
at what age is the dentition at
at what age does the 3rd molar start erupting
at what age are the 3rd molars fully erupted
what occurs at the gum pads at birth
gum pads over a-d’s
usually +ve overjet
unerupted teeth
rapid growth in 1st year
complete the eruption chart
why do the D’s erupt before the C’s
stabilise the occlusion
what is the name of the space between the primary dentition
describe flush distal edges of E’s and Attrition
at the age of 6 whta occurs in the dentition
eruption of permanent dentition commences
deciduous teeth start to shed
start of the mixed dentition
complete the permanent dentition eruption chart
eruption of the permanent dentition is symmertical.
if the dentition isnt symetrical, what could that indicate
assymetry of the dentition is a result of delayed eruption, which can indicate a problem
Delayed eruption could be a result of the following
Down’s syndrome
Delayed deciduous resorption due to trauma
Dilaceration
Supernumeraries
abnormal path of eruption
early deciduous loss and bone formatin
crowding
congenital disease
impaction
what is dilaceration
Dilaceration is a developmental disturbance in shape of teeth. It refers to an angulation, or a sharp bend or curve, in the root or crown of a formed tooth
