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Oral and Dental Anatomy > Dental Anomalies > Flashcards

Dental Anomalies Flashcards

1
Q

Dental anomalies

A

anything that is not normal
developmental or hereditary
depends on stage of development and the length of the disturbance
more common in permanent teeth

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2
Q

Anodontia

A

lack of teeth
total and partial and oligodontia
hereditary, congential

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3
Q

Anodontia Most common

A

3rd molars
max lat incisors
mand second molar

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4
Q

supernumerary

A 
extra teeth 
AKA hyperdontia 
1-2 % of pop 
less common than anadontia 
may not resemble an actual tooth
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5
Q

supernumerary most common

A

max third molars
max later inc.
mand second premolar

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6
Q

mesiodens (supernumerary)

A

extra tooth at midline of 2 teeth

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7
Q

macrodontia

A

abnormal size of teeth
few teeth affected
TRUE and FALSE
due to pituitary gland

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8
Q

common False Macrodontia

A

incisors, canines, mand 3rd molars

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9
Q

false microdontia

A

smaller

pituitary gland

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10
Q

common false microdontia

A

max lateral and max premolars
when its the lateral = “PEG” lateral
–> affects 1% of pop.
–> M and D portion of tooth didnt develop properly

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11
Q

Dens in dente

A

irregular shape
Dens Invaginatous
tooth within a tooth, enamel grows inward

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12
Q

Dens in Dente common

A

lingual pit of the max lateral incisors.

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13
Q

Shovel shaped incisors

A

very prominent marginal ridges, deep fossa.

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14
Q

Dens Evaginatus

A

enamel grows outward, smaller tubercles of enamel on fossa and occlusal surfaces.

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15
Q

Dens evaginatus

A

common on mand premolars.

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16
Q

Dilaceration

A

distortion of the crown or root, sharp bends
> 90 degrees
caused by trauma, some injury caused by pressure on the developing tooth

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17
Q

flexion

A

distortion on the crown or root,

<90 degrees

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18
Q

gemination

A

double the crown but normal number of teeth
single root
hereditary

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19
Q

gemination common

A

incisal area

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20
Q

Twinning

A

complete split of the tooth germ
two identical teeth developing
extra tooth in the arch (supernumerary)

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21
Q

Fusion

A 
Double tooth/2 teeth are fused
1 less tooth in the arch
involves CROWN ONLY but sometimes root
separate pulp canals
pressure
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22
Q

Fusion common

A

ant teeth, deciduous

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23
Q

Concrescence

A

union of two teeth joined at the root by cementum
excess cementum
pressure and crowding
after tooth has erupted

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24
Q

Concrescence common

A

max molars

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25
dwarfed roots
crowns normal but the roots are abnormally short
26
dwarf roots common
max central, typically affect bilaterally.
27
segmented root
two separate root fragments forming
28
hypercementosis
excessive cementum formation around the root | occur after eruption due to trauma, pressure
29
hypercementosis common
perm molars
30
Periapical cemental dysplasia = cementoma
little blobs, involves cementum | can cause destruction of bone.
31
PCD common
mand anteriors
32
accessory roots and cusps
extra cusps and roots | hereditary or developmental
33
1. cusps 2. roots common
1. third molars and ant teeth | 2. 3rd molars
34
talon cusp
extra cusp on the anterior teeth | will have dentin and pulp, not just enamel
35
enamel pearls
common in furcation area, perm molars AKA: enameloma increased risk of perio disease because its hard for the fibres to attach
36
cervical enamel extension
enamel extension going onto the root surface | might feel like a CEJ depending on thickness
37
hutchinsons incisors
caused by prenatal syphillus (mother will have it) | middle facial lobe is missing, screwdriver shaped
38
HI common
incisors and first molars
39
Mulberry molars
prenatal syphillus in molars (poorly developed cusps)
40
odontoma
``` benign tumor calcified tissue dev disturbance of dental lamina or the dental follicle by trauma or infection COMPLEX --> blob COMPoUND --> sort of looks like tooth ```
41
globodontia
teeth are sort of round, no cusp ridges or tips globe shaped.
42
taurodontism
bull like tooth, pulp chamber is big small roots
43
Enamel dysplasia
enamel doesnt calcify during development severity depends on stage and how long the disturbance was occurring. DIFF Types
44
TYPE 1 Enamel hypoplasia
``` damage to enamel matrix as it was forming injury to enemeoblasts areas where enamel is defficient due to fever, systemic disease if in deciduous teeth mom had fever if in perm, kid had fever stain easily prone to caries ```
45
TYPE 2 Enamel Hypocalcification
enamel formed and laid down but now it is calcifying and mineralizing ==> get white spots smooth in texture
46
regional odontodysplasia
GHOST TEETH enamel is very very thin will not erupt properly
47
amelogenesis imperfecta
ranges from complete lack of enamel to enamel present but doesnt calcify at all yellow brown, pitted, attrition will be a problem
48
dental fluorosis
hypocalcification because of too much fluoride white chalky areas that eventually get stained mild - severe caries resistant
49
focal hypomaturation
clear defined white areas, circle in shape LOCALIZED enamel is soft and prone to staining trauma
50
Focal hypomaturation common
deciduous, TURNEr'S TEETH
51
tetracycline staining
``` affects dentin tetracycline gets into dentin if mom takes it, it gets into the kids dentin if kid takes it, in perm teeth appear in bands CAN BLEACH BUT wiLL ALWAYS COME BACk ```
52
Dentinogenesis imperfecta
dentin did not form properly, the enamel forms but falls off because there is no dentin bluish teeth
53
dentin hypoplasia
dentin laid down but doesnt form properly
54
interglobular dentin
areas that are un or over mineralized of dentin.
55
Eruption sequestrum
bone overtop, or cementum covering a tooth that prevents it from erupting.
56
Impacted teeth
no bone preventing the tooth from erupting, just a tooth jamming into another one
57
Anklosis
teeth fused to the bone
58
anklosis common
deciduous molars | needs to be surgically removed sometimes so teeth can erupt.
59
neonatal teeth
teeth present at birth.
60
ankloglossia
tongue tied, | frenum attachment is so high that it affects speech
61
Fordyce granules
yellow, sebaceous glands | on cheek
62
macroglosia
tongue is big
63
black hairy tongue
caused by Hydrogen peroxide, drugs, tobacco, alcohol, radiation therapy reversible
64
bruxism
grinding, severe attrition | recommend a night guard.
65
Linea alba
line on the buccal mucosa, lines where the max and mand teeth meet never goes away when u get 8s coming it, it can be localized there
66
3 CATEGORIES OF NCCL (NON CARIOUS CERVICAL LESIONS)
1. Abrasion 2. Erosion 3. Abfraction
67
Abrasion
caused by brushing teeth loss of enamel FOREIGN substance caused it
68
Erosion
loss of enamel due to something CHEMICAL | dont assume bulimia, may be sucking on too much cough drops, acid reflux
69
Abfraction
teeth are flexing and get wedge shaped teeth force causes teeth to get weird shaped. --> tooth loss at CEJ.

Oral and Dental Anatomy (1 decks)

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