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    • Microdont
    • tiny teeth
    • 3rd molar or extra tooth that is tiny
    • in molar region
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    • distomolars
    • also microdonts
    • usually in molar region
    • 2 shown in picture
  3. Macrodonts
    • overly large teeth
    • can be all or just some of the teeth
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    • Dilaceration
    • root is curved
    • Pic C shows an abscess because they went beyond the root
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    • Effects of syphilis:
    • Hutchinsons incisors: look like chiseled incisors

    Mulberry Molars: 15-20 tiny cusps

    Both occur during calcification and usually come from mother during pregnancy.
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    • Dens evaginatus:
    • an accessory enamel cusp found on the occlusal tooth surface

    only on posterior teeth
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    • Peg Lateral:
    • This is congenital.
    • Lateral incisors are the most common teeth to have deviations in size and shape.
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    • Talon cusp:
    • accessory cusp found in the cingulum area of maxillary or mandibular permanent incisors

    The cingulum turns into a cusp.
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    • Gemination:
    • the fusion of two teeth from a single enamel organ (twinning)

    means paired or occurring in twos

    When you count the teeth, you are likely to get the normal number of teeth.
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    Fusion: the joining of two developing tooth germs resulting in a single, large tooth.

    When counting teeth, there will be one less than normal.
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    Dens in Dente "Tooth in a tooth":

    You would take an xray because of the red dot on the gingiva.  That is an abscess.  The abscess is the dark spot on the xray.
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    Concresence: two teeth united by cementum only

    would need oral surgery to fix this
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    Partial anodontia: missing teeth that never formed

    Anodontia means missing teeth (can be partial or complete)

    Complete anodontia is known as edentulism.
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    • Supernumerary teeth:
    • extra teeth that have formed.

    Usually occurs in the anterior region or the molar region.  On this patient, it's in premolar and molar regions.
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    • Supernumerary roots:
    • an extra root

    this mandibular 2nd premolar is bifurcated...maybe even the first
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    Mesiodens: an extra tooth that is found only in the maxillary anterior region
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    Amelogenesis Imperfecta: enamel is deficient.

    Could occur from trauma, medicines, diseases.

    Enamel forms from an ameloblast.  If a disturbance occurs in ameloblast, the enamel is deficient.  There's no enamel on these incisors.  Occurred during development.
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    Amelogenesis Imperfecta:

    This is imperfect enamel formation.
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    • Dentinogenesis Imperfecta:
    • Dentin didn't develop properly.  Teeth look transluscent.
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    Dentinogenesis Imperfecta
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    Hypercementosis: more cementum than normal

    In the area distal to this tooth, the maxillary sinus has dropped because molars are missing. This is called pneumatization.
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    • Enamel Hypoplasia:
    • This is a deficient enamel.  Minor stage looks like white, opaque spots.

    • Causes:
    • -febrile illness (illness with high fever)
    • -vitamin A, C, D deficiency
    • -local infection of deciduous tooth
    • -ingestion of fluoride
    • -congenital syphilis
    • -birth injury
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    Mottled enamel: Fluorosis:

    When teeth were developing, this person had too much fluoride.  This is moderate fluorosis.  Only happens when teeth are developing.
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    • Enamel Pearl:
    • misplaced emaloblasts
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    • wearing away of incisal and occlusal surfaces 
    • tooth to tooth contact

    caused by clinching or grinding at night

    On this pic, you can see calculus deposits, rolled tissue and recession.
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    Abrasion: mechanical wearing away of tooth structure

    (years of brushing too hard)
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    Erosion:Chemical wearing away of tooth's surface

    Bulemia causes the lingual surfaces to wear away, from the stomach acid.

    This is mostly seen on facial surfaces.  Sucking lemons can do this.
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    Meth Mouth

    Caused by overuse of methamphetamine
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    • Fissured Tongue:
    • Teach these patients how to clean their tongue.

    This can cause halitosis and hold bacteria and trap food.
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    • White Hairy Tongue:
    • Usually caused by thrush (yeast infection) or long term antibiotics.

    Arrow pointing to fungiform papillae.
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    • Black hairy tongue:
    • Caused y overuse of certain agent/drugs as well as the patient not cleaning their tongue.

    Rinsing with hydrogen peroxide will cause this.
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    • Median Rhomboid Glossitis:
    • may be associated with a fungal infection.
    • usually appears as a flat or slightly raised oval or rectangular red area in the midline of the dorsal of the tongue.

    Inflammitis of tongue with red shape in midline.
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    • Geographic tongue:
    • occurs on the dorsal and lateral surface of tongue.
    • Appears as areas devoid of papilla.  Can migrate to other areas of the tongue.
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    Maxillary Tori:Overgrowth of bone in the palate.

    Usually in center of palate.

    Exostosis is overgrowth of bone.  It's called maxillary tori if it's in the center of the palate.
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    Mandibular tori: overgrowth of bone in the floor of the mouth.

    Really hard to take xrays.

    If partials are needed, they must be surgically removed.
Card Set:
2014-10-25 03:08:48
tooth morphology

Anomalies in tooth morphology
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