Linda

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Author:
linlee1109
ID:
69082
Filename:
Linda
Updated:
2011-02-26 15:12:08
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Exam
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Description:
Dental Exam
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  1. Demonstrate understanding of basic oral & dental anatomy & physiology.
    • Bone-Hard connective tissue that forms the framwork of the body.
    • Anatomic terms that pertain to the bones of the skull:
    • Canal-a long tube opening through bone
    • Condyle-a rounded surface at the articular end of the bone.
    • Foramen-a short opening in a bone or other sturcture.
    • Fossa-a pit,hollow or depression in the bone.
    • Meatus-an opening or tunnel through the body.
    • Process-a distinct projection of bone.
    • Septum-a thin bony layer separating two areas such as the nasal cavities.
    • Sinus-hollow space or opening a cavity
    • Suture-a rigid joint formed between two bones by cartilage or connective tissue or bone.
    • Tubercle-rounded elevation on the surface of tissue
  2. What is Cranial, Facial & Hyoid bone?
    • Cranial Bones: (8 total bones)
    • Ethmoid-single bone
    • Frontal-single bone
    • Occipital-single bone
    • Parietal-paired bones
    • Sphenoid-single bone divided into two segments: greater wing and the lesser wing
    • Temporal-paired bones

    • Facial Bones:(14 total bones)
    • Inferior Nasal Conchae-paired bones
    • Lacrimal-paired bones
    • Mandible-single bone
    • Maxilla-paired bones
    • Nasal-paired bones
    • Vomer-single bone
    • Palatine-paired bones
    • Zygomatic-paired bones

    • Hyoid Bone:
    • is an integral aspect of the skull suspended between the mandible and the larynx. It provides support for the tongue and other muscles.Isn't always considered a portion of the skull but its necessary bone to several functions.

    • Sutures of the Skull:
    • Coronal-union of the partetal,frontal and sphenoid bones.
    • Squamosal-union of the temporal and parietal bones.
    • Lambdoidal- union of the parietal & occipital bones.
  3. What are Muscles?
    Muscles of mastication-muscles that are responible for facical expression allow movement in the skull.

    • Four pairs of muscles:
    • Masseter muscle
    • Temporal muscle
    • Medial pterygoid muscle
    • Lateral pterygoid muscle

    • Muscles are responsible for chewing, tearing and grinding food. they are attached to the mandible and the upper two thirds of the skull. They provide protrusion, retrusion, elevation & lateral movement of the mandible.
    • 4 sets of muscles are paired together to contract allowing movement for the mandible to open/close.

    • Functions of muscles of mastication:
    • Elevation-moves the mandible up or in closing
    • Protrusion-moves the mandible forward
    • Retrusion-moves the mandible back
    • Depression-lowers or opens the mouth
    • Lateral excursion-moves the mandible sideways

    • Muscles of Facial Expression:
    • movement of the cheeks,lips to reveal emotions, & mastication and speech.

    • Muscles Include:
    • Orbicularis oris
    • Depressors of the lip: mentalis,depressor labii inferiorus,anguli oris and platysma muscles.
    • Elevators of the lip: levator labii superioris,anguli oris,zygomaticus major muscles.
    • Risorius muscle
    • Buccinator muscle
  4. What is Temporomandibular Joint-(TMJ)
    • Temporomandibular Joint-(TMJ)-Movement of the mandible. It's the only movalbe joint in the skull,with hinging of the mandible to both temporal bones. The hinged joint allows gliding motion, & hinge
    • action. It's attached to the cranium by ligaments.

    • It's made up of many structures such as: Mandible, condyle, glenoid or mandibular fossa in the temporal bone. The articular disc or meniscus between the mandibular condyle and the temporal bone.( the articular eminence). glenoid or mandibular fossa.
    • Synovial cavities
    • Articular capsule

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