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Dental Anatomy/Terms
From Concepts In Dental Assisting Chapter One
| Question | Answer |
|---|---|
| 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
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