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Chapter 10: Landmarks Of The Face Part 1

Anatomy and Physiology35 CardsCreated 3 months ago

This deck covers key concepts and terminology related to the anatomical features of the face, focusing on dental structures such as enamel, dentin, pulp, and the periodontium.

Anatomical crown

Portion of tooth covered by enamel
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Key Terms

Term
Definition
Anatomical crown
Portion of tooth covered by enamel
Clinical crown
Portion of tooth that is visible in the mouth

Enamel

  • the hardest material in the body

- formed by ameloblasts

What is composed of calcified enamel prisms or enamel rods
Enamel
Hydroxyapatite crystals
Found in enamel, consists primarily of calcium
Striae of retzuis
Incremental growth lines or bands seen in tooth enamel

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TermDefinition
Anatomical crown
Portion of tooth covered by enamel
Clinical crown
Portion of tooth that is visible in the mouth

Enamel

  • the hardest material in the body

- formed by ameloblasts

What is composed of calcified enamel prisms or enamel rods
Enamel
Hydroxyapatite crystals
Found in enamel, consists primarily of calcium
Striae of retzuis
Incremental growth lines or bands seen in tooth enamel
Hypocalcified or uncalcified ends of enamel rods that extend from DEJ into enamel
Enamel tufts
Cracks or faults found microscopically in enamel which extend from the enamel surface toward DEJ
Enamel Lamellae
Enamel spindles
End of ondontoblast fiber extend slightly into enamel

Hunter-Schreger Bands

Alternating dark and light bands in enamel. Caused by intertwining or changing direction of prisms

Dentin

  • covered by enamel and cementum and protects the pulp

- formed by ondontoblasts

Dentinal tubules
Canals in dentin
Dentinal fibre
Transmits pain stimuli
Primary dentin
Formed before eruption of tooth
Secondary dentin
Forms after eruption of tooth

Repetitive dentin or tertiary dentin

Formed in response to irritation

-ex. Cavities, erosion, dental treatment

Pulp

Tooth receives nourishment from pulp

-formed by fibroblasts

Radicular pulp
Root pulp
Apical foramen
Opening at the apex for continuation of the nerve

Cementum

Connective tissue / anchors tooth in bony socket

Formed by cementoblasts

The periodontium is divided into 2 units which are?
Attachment apparatus and the gingival units
Attached apparatus consists of ?
Cementum, alveolar process, periodontal ligaments
The attachment apparatus
Supports maintains and retains the tooth in functional position
The extension of bone from mandible and maxilla
Alveolar process
Osteoblasts
Form bone
Is the mandible or maxilla more dense
The mandible is more dense
Cortical plate of the alveolar process
Is a dense outer covering of the spongy bone and is the central part of the alveolar process
Alveolar crest
Highest point of the alveolar ridge It is fused with the cortical plate
Alveolar socket
Cavity with the alveolar process, surrounds the root of the tooth
The bony socket that separates one socket from another is the
Interdental septum
The bone that separates the roots of multi-rooted tooth
Interradicular septum
The lamina dura is also known as
The cribriform plate
The lamina dura is what?
A thin compact bone that lines the alveolar socket
Periodontal ligaments are what
Dense connective tissue that connect cementum with alveolar bone of the socket wall
Sharpeys fibres
Attachment/embedded points in cementum and bone that are mineralized