Acquired Abnormalities of the Teeth
Terms in this set (105)
Partial or complete absence of the maxilla and/or mandible
SMALL maxilla and/or mandible
T/F: Micrognathia is often associated with infection or trauma to the TMJ, and congenital heart disease?
Infection/trauma to the TMJ can lead to what?
LARGE maxilla and/or mandible
T/F: Down Syndrome is often associated with micrognathia?
FALSE: Down Syndrome is associated with MACROgnathia
3 Syndromes associated with macrognathia
1) Down Syndrome
2) Paget's Disease
Gigantism after becoming an adult
Metabolic disease of bone; an aging process where bony deposition causes the jaw to get bigger
At what week of tooth development would you see the Bud Stage?
At what week of tooth development would you see the Cap Stage?
At what week of tooth development would you see the Bell Stage?
Group of cells located at the CENTER of the Enamel Organ
TOTAL lack of tooth development
Lack of tooth development in ONE OR MORE teeth
What syndromes are associated with hypodontia (6)?
1) Crouzon Syndrome
2) Down Syndrome
3) Ectodermal Dysplasia
4) Elhers - Danlos
5) Sturge - Webere
6) Gorlin Syndrome
Cidnee Doesn't Eat Eggs, Sausage, or Goose
Lack of development of 6 OR MORE teeth
Development of an INCREASED number of teeth - supernumerary
What syndromes are associated with hyperdontia (6)
1) Apert's Syndrome
2) Cleidocranial Dysplasia
3) Gardner Syndrome
4) Crouzon Syndrome
5) Down Syndrome
Anna Christine Gets Candy Down Stairs
What syndromes can manifest as either hyper- or hypodontia (3)?
1) Crouzon Syndrome
3) Down Syndrome
What syndromes are associated with Microdontia (2)?
1) Down Syndrome
2) Pituitary Dwarfism
^BOTH are DIFFUSE Microdontia
can also have Isolate Microdontia
T/F: Those with Pituitary Dwarfism or Down Syndrome can often present with Isolate Microdontia?
FALSE --> They present with DIFFUSE microdontia
What syndromes are associated with Macrodontia (2)?
1) Hemifacial Hyperplasia
2) Pituitary Gigantism
SINGLE ENLARGED tooth
SEPERATE root canals
Tooth count reveals MISSING TOOTH
TWO TEETH JOINED together along the root surface
Dens in Dente
A tooth within a tooth
What tooth is most commonly affected by Dens in Dente?
Maxillary lateral incisor
--> Cental incisors --> Premolars --> Canines --> Molars
Curvature in the root
Rectangle shaped teeth exhibiting enlargement of the BODY AND PULP chambers
What syndromes are associated with taurudontism?
1) Down Syndrome
3) Amelogenesis Imperfecta
CUSP like ELEVATION of enamel
What teeth are most commonly affected by Dens Evaginatus?
Mandibular Premolars and Molars
T/F: Dens Invaginatus does NOT interfere with occlusion
FALSE -- it can interfere with occlusion
T/F: Pulpal exposure can easily occur on a tooth with Dens Evaginates?
Where do you typically find a Talon cusp?
Lingual Surface of Anterior teeth
What tooth would you most commonly see a talon cusp?
Maxillary LATERAL incisors
--> Centrals --> Mandibular Incisors --> Max Canines
T/F: A talon cusp typically extends at least 1/2 the distance from the CEJ to the incisal edge
What demographic would you most commonly see talon cusps?
ASIANS, Native Americans, Inuits, and people of ARABIC descent
T/F: Talon cusps can cause problems with occlusion?
What syndrome can be associated with talon cusps?
When preparing/removing a talon cusp, what do you want to be careful of?
the PULP HORNS
Where do you typically see enamel pearls?
The furcations of posterior teeth
Cervical Enamel Extension
Where do you most commonly see cervical enamel extensions?
Cervical enamel extensions are associated with the development of what?
Inflammatory bifurcation cysts
can be caused by local and/or systemic factors
Local factors that contribute to hypercementosis
1) Abnormal occlusal trauma
2) Adjacent Inflammation
3) Unopposed teeth
4) Repair of vital root fractures
Systemic factors that contribute to hypercementosis
1) Acromegaly and Pituitary Gigantism
2) Arthritis, Calcinosis, Vitamin A deficiency
3) Paget Disease
4) Rheumatic Fever
5) Thyroid Goiter
6) Gardner Syndrome
Developmental alterations in the structure of enamel in the ABSENCE of a SYSTEMIC DISORDER
What are the 3 types of Amelogenesis Imperfecta?
Inadequate deposition of the enamel matrix
Hypoplastic Amelogenesis Imperfecta
Defect in the maturation of the enamel's crystal structure
Hypomaturation Amelogenesis Imperfecta
Normal enamel matrix with no significant calcification
Hypocalcified Amelogenesis Imperfecta
Developmental alterations in the structure of dentin in the absence of a systemic disorder
Dentinogenesis often occurs with what other systemic bone disease?
Describe Brandywine type, and what tooth abnormality it is typically associated with
associated with Dentinogenesis Imperfecta
occurs when the dental pulp becomes ENLARGED with very THIN dentin, but the enamel is NORMAL thickness
Describe teeth with dentinogenesis imperfecta (3)
1) BULBOUS crowns
2) Cervical CONSTRICTION
3) EARLY OBLITERATION of the pulp
Dentin Dysplasia Type 1
Dentin Dysplasia Type 1 results from a loss of organization of what?
Radicular dentin -- why they are "rootless"
T/F: In Dentin Dysplasia Type 1 the radicular and coronal dentin, and the enamel, are all affected.
FALSE - just the radicular dentin is affected
the coronal dentin and enamel are normal
T/F: Dentin Dysplasia Type 1 can present with periapical inflammation with no obvious cause
Dentin Dysplasia Type II
Loss of CORONAL dentin, coronal dentin dysplasia
Root length NORMAL, but roots are THIN
type of pulpal calcification
Diffuse Linear Calcifications
What are the 3 types of pulpal calcifications?
1) Pulp Stones
3) Diffuse Linear Calcifications
What 3 conditions are most associated with pulpal calcifications?
1) Dentin Dysplasia Types I and II
2) Tumoral Calcinosis and Calcinosis Universalis
3) Elhers-Danlos (due to malformation of collagen)
What condition results in "ghost teeth" when seen on radiograph?
T/F: Regional odontodysplasia affects dentin only
FALSE --> Regional odontodysplasia affects enamel, dentin, and pulp
What is the clinical presentation of regional odontodysplasia?
Malformed and hypoplastic teeth
NO PDL --> tooth is stuck to the bone
When a dull sound is heard when the end of the mirror is tapped against the tooth, this is indicative of what?
Ankylosis - tooth is stuck into the bone with NO PDL
MECHANICAL wear of tooth surface
(biting your nails)
Wearing away of the tooth using OCCLUSAL FORCES
(flat occlusal anatomy, no incised edges)
CHEMICAL wear of tooth structure
What post-developmental tooth condition can result in people who eat lots of lemons or who are bulimic?
Erosion is most common in what area?
the PALATAL aspect of teeth
loss of tooth structure ALONG THE GINGIVA, oftentimes due to excessive occlusal forces
Extrinsic tooth staining can result from what (3)?
1) Poor oral hygiene
2) Foods and Beverages
3) Dental products (chlorhexidine and stannous fluoride)
Intrinsic tooth staining can result from what (8)?
1) Enamel hypoplasia
2) Dental fluorsis
3) Turner's tooth
4) Internal resorption
5) Tetracycline staining
7) Erythroblastosis fetalis
8) Porphyria Gunther disease
Chicken pox and measles (and early childhood fevers) are often associated with what condition that can lead to intrinsic tooth staining?
T/F: Enamel hypoplasia typically results in unilateral enamel loss
False - the enamel loss is BILATERAL in Enamel hypoplasia
Horizontal rows of pits
What condition results from the ingestion of excess amounts of fluoride?
Describe the appearance of fluorosis on the teeth?
White, chalky appearance, often confused with hypo maturation amelogenesis imperfecta
"Mottled Enamel" is oftentimes used to describe what condition?
Infection of the primary tooth that goes on to affect the succedaneous tooth
Pink tooth of Mummery is associated with what tooth condition?
Pink tooth of Mummery results typically from what?
When the coronal part of the tooth is affected by trauma, or trauma induced by ortho or period txt
Tetracycline chelates with ______ in teeth that causes the internal stain
What stain presents as a dark band that can be seen clinically as well as radiographically?
T/F: The oral mucosa, as well as the teeth, can be stained by tetracycline
Tetracycline drugs should not be given to whom?
Pregnant women or children under 8yo
What stain presents as a greenish discoloration?
Hyperbilirubinemia staining can be seen in infants with what (2)?
2) Neonatal hepatitis
Describe the mother and baby in erythroblastosis fetalis
RH(-) Mother and RH(+) baby
-mother's immune system attacks the fetus b/c of the different RH factors on the RBCs
Hemolytic disease of the newborn
What can be used to help txt erythroblastosis fetalis?
What condition results from a defect in porphyrin metabolism?
Porphyria Gunther Disease
T/F: In Porphyria Gunther Disease, both the enamel and dentin are affected in primary and permanent teeth.
FALSE - both enamel and dentin are affected in primary teeth, but in PERMANENT teeth ONLY DENTIN is affected