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DEH 103: Dental Anatomy

Chapters 6 & 7: Morphology of the Permanent Incisors

Chapters 6 & 7: Morphology of the Permanent Incisors

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Kelsie Orndorff
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Kelsie Orndorff
This flashcard set covers dental anatomy at the university level, focusing on the structure and development of incisors. It delves into the eruption times of both primary and permanent teeth, the anatomical features of maxillary and mandibular incisors, and their functional roles. Dental students will find this set particularly useful for understanding the detailed aspects of incisor anatomy, including lobes, surfaces, and variations, which are crucial for clinical practice and exams.
Karten
20
Lernende
2
Sprache
Englisch
Kategorie
Medizin
Stufe
Universität
Erstellt / Aktualisiert
28.12.2013 / 08.02.2024
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What is the functions of incisors?

  • Help cut food
  • Articulate speech
  • Support the lips

How many incisors are in each arch?

4 incisors in each arch

What are 2 types of incisors?

  • Central (8/9 & 24/25)
  • Lateral (7/10 & 23/26)

What are the 5 surfaces of an incisor?

  1. Mesial
  2. Distal
  3. Facial
  4. Lingual
  5. Incisal

How many lobes does an incisor form from?

4 lobes

Where is the contact on maxillary incisors?

  • Mesial: Incisal 1/3rd
  • Distal: junction of incisal and middle 1/3rd

The mesial marginal ridge is (longer / shorter) than the distal marginal ridge?

Longer

What is the attrition facet's on maxillary and mandibular incisors?

  • Maxillary: lingual surface
  • Mandibular: facial surface

The maxillary central incisors (8/9) are the _____ M/D than any other incisor.

Wider

What is the time of eruption for the maxillary central incisors for primary and permanent teeth?

  • Primary: 7.5 months
  • Permanent: 7-8 years old

True/False:

The crown to root ration of central maxillary incisors is greater than any other tooth.

False: it is the smallest of all teeth

The 3 developmental lobes that form the facial of a maxillary central incisor are known as?

Mamelons

What is formed by the 4th lingual lobe of any incisor?

Cingulum

True/False:

The maxillary central incisors have the greatest interproximal CEJ curveture of all teeth.

True

This class of incisor is known to have the greatest variation from normal 2nd to 3rd molars?

Maxillary lateral incisors

What is the time of eruption for primary and permanent maxillary lateral incisors?

  • Primary: 9 months
  • Permanent: 8-9 years

The distal lingual groove of the cingulum may extend onto the root surface why is this an issue?

Can lead to periodontal issues down the line because it is a plaque trap and can lead to periodontal disease

These are the smallest of all teeth bilaterally.

Mandibular central incisors (24/25)

What is the time of eruption for mandibular central incisors for primary and permanent dentition?

  • Primary: 6 months
  • Permanent: 5-6 years

What is the time of eruption of a mandibular lateral (23/26) for primary and permaenent?

  • Primary: 7 months
  • Permanent: 7-8 years

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