Lecture 1 Flashcards

1
Q

Diphyodont

A
  • -Organisms with two sets of teeth (like human teeth)
  • -a. Primary (baby teeth)-20 teeth. These are replaced by permanent teeth. 8 incisors, 4 cuspids, 8 baby molars,
  • -b. Permanent-32 teeth, which are, on average, larger than the baby teeth: 8 incisors, 4 cuspids, 8 pre-molars (slightly smaller than baby molars), 12 perm molars (extra space is created for these b/c your jaw grows)
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2
Q

Upper Jaw

A

Maxillary

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3
Q

Heterodont

A

Different kinds of teeth (molars, pre-molars, incisors, etc)

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4
Q

Anterior

A
  • -Cuspids forward
    i. Incisors-Meant for cutting
    ii. Canines (Cuspids)-Quite robust, these are the strongest tooth in the mouth relative to bone-holding strength
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5
Q

Posterior

A
  • -Pre-molars back
    i. Premolars (Bicuspids)-Starting to get flat crushing surface
    ii. Molars-Broad root structure to support against lateral forces
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6
Q

What is the Universal naming code?

A
  • Treat the mouth as a circle (primary teeth and extra teeth are given a letter)
  • -Start in the upper-right-back (patients perspective) and move clockwise around the mouth until you reach the lower-right-back
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7
Q

What is the Palmer (Ortho) naming code?

A
  • Quadrants with brackets

- Upper right (number w/bracket designating quadrants)

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8
Q

What is the International naming code?

A

Two digit system

  • -The first digit tells you which region you are in (Quadrants 1-4)
  • The second number tells you how far you are from the midline you are (numbers increase the further away you get
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9
Q

Mesial

A

Side facing the midline (closer to the front)

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10
Q

Distal

A

Side away from the midline (further from the front)

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11
Q

Facial

A

Side closest to the face (cheek)

  i. Labial--for front teeth referring to the labial muscle
  ii. Buccal--side closest to the buccal muscle
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12
Q

Lingual (Palatal)

A

Side closest to the tongue

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13
Q

Biting Surfaces

A

i. Incisal-Biting surface for non-molar teeth (anterior teeth)
ii. Occlusal–biting surface for molars (posterior teeth)

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14
Q

Dentin

A

Makes up the majority of the roots and the whole inside core of the tooth (looks very much like bond)

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15
Q

Cementum

A

Coats the roots, anchor point between tooth and bone

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16
Q

Enamel

A

Strongest substance in the body, very limited ability to repair itself, mostly inorganic

17
Q

Pulp Tissue

A

Contains a permanent nerve (delta fibers send the signal “ouch” even if the stimuli is heat or cold)

  • -The Pulp is the very most innermost core of the tooth
  • -Soft tissue
18
Q

Teeth Naming Order

A

1-Definition (Permanent or Primary)
2-Arch (Maxillary or Mandibular)
3-Right or Left
4-Tooth Name (Central Incisor, etc.)

19
Q

Dento-Enamel Junction (DEJ)

A

The junction between the enamel and the dentin

20
Q

Cemento-enamel Junction (CEJ)

A

Junction between the cementum and the enamel

21
Q

How does your brain receive pressure sensation when a force is applied to your teeth?

A

Through the nerves outside the tooth in the surrounding bone

22
Q

What is the difference between the anatomical crown and the clinical crown?

A

Mainly the definition itself. The anatomical crown is defined as the portion of the tooth covered with enamel. The clinical crown is the portion of the tooth above the gum line (except in the cases of a young child with developing teeth, or an adult with receded gums)