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Dental Anatomy/Terms

From Concepts In Dental Assisting Chapter One

QuestionAnswer
Anterior Front or forward part of the mouth
Posterior Refers to the back of the mouth
Lateral Refers to the outer left and right part of the body
Gingiva Gums surrounding the teeth
Attached Gingiva Scalloped lighter color around the teeth
Unattached Gingiva Located directly below the attached gingiva, thinner, capillaries can be seen through
Mandible Lower jaw, contains the lower teeth
Maxilla The bone that contains the upper teeth. It is stationary
Labial Frenum A fold of skin from inside of the lips and attaches at the canter of the maxilla and mandible
Lingual Frenum A fold of skin in the center of the underside of the tongue.
Tonsil Rounded mass of lymphatic tissue on each side of the throat
Hard Palate The attached gingiva and underlying maxilla forming the roof of the mouth
Soft Palate The freely moving flap on skin containing the uvula. Closes off the nasal passages during swallowing
Buccal Vestibule The space between the cheek tissues and the maxilla and mandible
Condyles The pivoting ball of the ball and socket TMJ which allows the mandible to open
TMJ Temporomandibular Joint. The joint in the skull in which the condyle of the mandible rotates to open the lower jaw
Mental Foramen Opening in the mandible just below the bicuspid area which allows a branch of the mandibular nerve to exit
Ramus Part of the mandible which turns vertically towards the skull and allows rotation of the mandible via the TMJ
Mandibular Foramen Opening on the MEDIAL side of the RAMUS which allows the nerve from the brain to enter the mandible and innervate the lower teeth
Body Part of the mandible which is approximately horizontal in an upright person and contains the teeth
Apex End of the root tip where the nerve/blood vessels enter/exit
Bone The hard tissue which all teeth securely reside within
Cementoenamel Junction CEJ. The junction line between the enamel layer and the cementum layer of the tooth
Cementum The specialized layer of cells which cover the root surface
Crown That part of the tooth which is visible and protrudes through the gingiva
Dentin The softer, underlying layer beneath the enamel
Enamel The hard, white material which covers the crown portion of the tooth
Sulcus The trough formed by the collar of the gingiva
Gingival Margin The rolled border or crest of tissue surrounding the crown portion of each tooth
Pulp Canal Continuation of the pulp chamber as it narrows into the tooth roots
Pulp Chamber The large chamber at the center of the crown portion of the tooth containing nerves and a blood supply
Periodontal Membrane The network of thousands of hair-like ligaments between the root and bone which holds the tooth in the bony socket
Root That part of the tooth not covered by enamel and embedded in the bone
Facial Refers to the outer surface on any tooth
Labial Outer surface on anterior teeth only
Buccal Outer surface on posterior teeth only
Palatal On upper teeth only, the tooth surface on the palatal side
Lingual The tooth surface next to the tongue
Mesial The surface on the tooth facing towards the anterior
Distal The surface of the tooth facing to the back or posterior of the mouth
Occlusal The chewing surface of the posterior teeth only
Incisal The biting or cutting edges of anterior teeth only
Created by: Rufinina