ORAL PATHOLOGY lab Flashcards
teeth which are smaller than normal
microdontia
all teeth are smaller than normal
true generalized microdontia
common in dwarfism
true generalized microdontia
normal or slightly smaller than normal teeth are present in jaws that are somewhat larger than normal
relative generalized microdontia
results spacing
relative generalized microdontia
“Peg-lateral”
Microdontia involving only a single tooth
most commonly affected teeth:
maxillary lateral incisor & 3rd molar
-Maxillary lateral incisor
Microdontia involving only a single tooth
peg-shaped or cone-shaped
crown, root shorter than usual
Microdontia involving only a single tooth
larger teeth than normal
macrodontia
all teeth are larger than normal
True Generalized Macrodontia
the presence of normal or slightly larger than
normal teeth in small jaw
Relative Generalized Macrodontia
uncommon
Macrodontia of single tooth
also known as twinning
gemination
splitting toothgerm
gemination
it is the occurs when two adjacent tooth germs unite
fusion
joined by thier crowns or thier roots
fusion
may be made at the dentin
fusion
united by cementum only
concrescence
causes of concrescence
1.traumatic injury
2. crowding of the teeth
resembles an eagle talon
talon’s cusp
aka dens in dente
-dens invaginatus
dilated composite ondontome
Location: projects lingually from the cingulum
area
talon’s cusp
commonly affects Mx & Mnd Permanent Incisors
talons cusp
talons cusp problems:
- esthetics
2.caries control
3.occulusal accommodation (bitting)
its a Invagination into a deep groove in a
tooth, frequently seen in the lingual pit area
dens in dente
food impaction in area initiating caries formation
dens in dente
causes of invagination of dens in dente
- increased localized external pressure
- focal growth retardation
- focal growth stimulation in certain area of the bud
Radiographic appearance:
-pear-shaped invagination of enamel
and dentin
dens in dente
aka dens evaginatus
occlusal tuberculated premolar
2. leong’s premolar
3.evaginated odontome
4. occlusal enamel pearl
an accessory cusp of globule of enamel on the occlusal surface betweeen the buccal and lingual cusps of premolar. maybe unilateral or bilateral
dens evaginatus
give 3 clinical significance of dens evaginatus
- maybe contribute incomplete eruption the teeth
2.may contribute to displacement of the teeth
3.May contribute to pulp exposure with
subsequent infection following occlusal
wear or fracture
enlargement of the body of the tooth gang root
taurodontism
bull-like-tooth
taurodontism
give the clinical appearance
tauridontism
give the clinical appearance of taurodontism
- seen both decidous or permanent teeth, but more common to permanent teeth
- may be unilateral or bilateral
radiographic features of taurodontism
- rectangular in shape
2.pulp chamber is extremely large with a much greater apico-occulusal height than normal
3.pulp lacks constriction at rhe cervical of the tooth
4.roots extremely short with bifurcation
its an angulation of the or crown yung sexy na ngipin HAHAHAHA
dilaceration
give the cause of dilaceration
trauma
common location of dilaceration
1.cervical portion
2. middle third of the root
3. apical third of the root
clinical consideration of dilaceration
difficulty of extraction
its congenital
hutchinson’s teeth
associated with syphillis
-notching at incisal edges
-narrowing of incisors
hutchinson’s teeth
anomalies of the roots of teeth
- short root
- supernumerary root
3.long root - enamel pearl-commonly seen in bifurcation/trifurcation of teeth
all teeth are missing
total anodontia
may involve both deciduous or permanent dentition
total anodontia
cause of total anodontia
- failure of toothgerm to develop
2.lack of initiation stage
common congenital condition characterized by absence of one or more
hypodontia
absence of many teeth, usually associated with small size of the existing teeth
oligodontia
result pf extraction
false anodontia
multiple unerupted teeth
pseudoanodontia
teeth are missing clinically but are formed but failed to erupt
pseudoanodontia
teeth in excess of the normal number
supernumerary teeth
possible causes of supernumerary teeth
- hereditary
- splitting of permanent tooth bud
3.developed form a 3rd bud but arising form the dental lamina near the permanent tooth bud
tooth situated between the maxilary central incisors
mesiodens
supernumerary molar usually and rudimentary which situated bucally or lingually to one of the maxillary molar
paramolor
supernumerary teeth that erupt OUTSIDE the dental arch
peridentes
teeth which erupt within the first 30
days after birth
neonatal teeth
erupt at birth
natal teeth
possibe cause ng neonatal teeth
1.arises form normal tooth germ that develops in a superficial position
2. lost spontaneously due to irregular structure of dentin and cementum
3. extracted to prevent them from being inhaled
cause of premature eruption of primary teeth
due to superficial location of toothgerm
cause of premature eruption of permanent teeth
early shedding of primary teeth
cause of persistence of deciduous teeth
1.primary teeth firmly attached to the alveolar socket
2.
causes of premature loss of deciduous or permanent teeth
dental caries
-periodontal diseases
