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Chapter 10 Dental Assisting

Terms in this set (59)

filiform Papillae
Provides us with sense of touch. covers entire tongue
Max. Labial Frenum
Against inner sideof lip which is normally the side against the teeth. Passes from the oral mucosa at midline of Max. Arch to midline of inner surface of upper lip.
Linea Alba
A normal variation noted on buccal mucosa. Whiye ridge of raised tissue extends horizontally at level where Max. and Mand. teeth come together.
Lingual Frenum
Passes from floor of mouth to midline of the ventral border of tongue.
Parotid Papilla
Small elevation of tissue. Located on inner surface of cheek on the buccal mucosa, opposite the 2nd Max. Molar. Protects opening of Parotid Duct of Parotid Salivary Gland.
Oral Mucosa
Continously lines the oral cavity. Their are 3 main types found in the oral cavity.
Outer Canthus
Outer eye- in the fold of tissue at the outer corner of eye.
Inner Canthus
The fold at the inner corner of the eyelids
Ala
The wing-like tip of the outer side of each nostril.
Philtrum
The rectangle area between the 2 ridges running from under the nose to the midline of upper lip.
Tragus
Cartilaginous of the ear. Projection anterior to the external opening of the ear.
Nasion
Midpoint between the eyes just below the eyebrows. On the skull its the point where the 2 nasal bones and frontal bone join.
Glabella
The smooth surface of the frontal bone, also the anatomic area directly above the root of the nose.
Root
The "bridge" of the nose
Septum
The tissue that divides the nasla cavity into 2 nasal fossae.
Anterior Naris
The nostril.
Mental Protuberance
The chin
Angle of the Mandibile
The lower posterior of the ramus.
Zygomatic Arch
Creates the prominence of the cheek.
Labia
The lips. Provide the gateway to oral cavity. formed externally by skin. Internally by mucous membrane.
Vermilion Border
The outlining of the lips. Darker in color than surrounding area.
Angular Cheilosis
A condition which causes inflammation or cracking at the corners of the mouth. Could be caused by lack of vitiam B, Herper Labialis, or cold sores. Very painful.
Labial Commissure
The angle at the corner of the mouth where upper and lower lips join.
Nasolabial Sulcus
The groove that extends upward between each labial commissure and nasal ala.
Incisive Papilla
Behind Max, Central Incisors. Pear shaped pad of tissue that covers the incisive foramen. Site of injection for anesthesia of the nasopalatine nerve.
Lamina Propria
Where gingival fibers are located. Is a connective tissue. Does NOT insert into the Alveolar Bone! Divided into 4 groups.
Uvula
A pear-shaped hanging projection of tissue hanging off the end of soft palate.
Attached Gingiva
Extends from base of sulcus to mucogingival junction. It is stippled, dense tissue that is self-protecting, firmly bound, and resilient.
Gingival Groove
"Free Gingival Groove" a shallow groove. Runs parallel to Margin of the unattached gingiva and marks the beginning of the attached gingiva.
Interdental Gingiva
Known as Interdental Papilla. Is the extension of the free gingiva that fills the interproximal embrasure between 2 adjacent teeth.
Unattached Gingiva
Marginal Gingiva
Free Gingiva
The border of the gingiva that surrounds the teeth in a collar like way. First tissue to respond to inflammation. NOT bound to the underlying tissue of the tooth. Consists of tissues from top of gingiva Margin to base of gingival sulcus. 1mm Wide. Forms soft walls of the gingiva sulcus.
Gingiva
the "gums" Is a masticatory mucosa that covers the alveolar process of the jaws and surrounds the necks of the teeth. Is self-cleansing, firm, resistant, are stippled and resemble the rind of an orange.
Buccal Frenum
In the area of the first Max. permanent Molar. This passes from oral mucosa of outer surface of Max. Arch to inner surface of the cheek.
Buccal Vestibule
The area between the cheeks and the teeth or Alveolar Ridge.
Mucobuccal Fold
This is where the base of the Vestibule and Buccal mucosa meet in the Alveolar mucosa.
Vestibule
Area in oral cavity. The space between the teeth and the inner mucosal lining of the lips and cheeks.
Oral Cavity Proper
The space on the tongue side within upper and lower dental arches. Holds teeth together. The back of your last molar is a space that links the Vestibule with the Oral Cavity Proper.
Mucogingival Junction
A distinct line of color seen in the tissue where the Alveolar membrane meets with attached gingiva.
Mucous Membrane
Tissue that lines the oral cavity. Is moist, and is adapted to meet the needs of the area it covers.
Sulcus
The space between the tooth and gum where popcorn husks become lodged.
Midline Palatal Raphe
Runs posteriorly from the Incisive Papilla.
Respiratory Mucosa
Covers the nasal surface.
Palatal Rugae
Extends laterally from Incisive Papalla. Are irregular ridges or folds of Masticatory mucosa.
Fordyce's spots
Granules, normal, small, yellowish elevations that may appear on the buccal mucosa.
Submucosa
This is beneath the lining mucosa. Contains blood vessels and nerves. Present beneath Masticatory mucosa. Is firmly affixed to bone. DOES NOT MOVE! Made to withstand vigorus activity of chewing and swallowing food.
Hard Palate
On the roof of youe mouth. Seperates the nasal cavity above from the oral cavity below. Is where injections are done. can be very painful.
Fauces
The 2 arches that suppoet the sof palate.
Soft Palate
Soft Palate is supported posteriorly by 2 arches called Fauces.
Anterior arch
Arch of soft palate. Runs from soft palaye down to the lateral aspects of the tongue as the..Anterior Faucial Pillar.
Anterior Faucial Pillar
Makes up the anterior arch of the soft palate.
Posterior Arch
The free posterior border of the soft palate.
Posterior Faucial Pillar
This is what we call the free posterior Arch.
Isthmus of Fauces
This is the opening between the 2 arches. It contains the palatine tonsils.
Functions of the tongue
1. Speaking
2. Positioning food while eating
3. Tasting and tactile sensations
4. Swallowing and
5. Cleansing the oral cavity.
Tongue
Composed of mainly muscles. The top is covered w/thick layer of mucous membrane and thousands of tiny projections called Papillae. Most versatile organ.
Parts of the Tongue
The Anterior two thirds of tongue is the BODY.
The posterior part that turns vertically downward to the pharynx is the ROOT.
The DORSUM comprises the superior(upper) and posterior roughened aspects of the tongue. Sublingual surface of tongue is covered w/thin,smooth,transparent mucosa which underlying vessels can be seen.
Fungiform Papillae
This is where the taste buds are located. Contains NO taste receptors
Taste Buds
The organs that allow us to enjoy the flavors of food and give us warning when foods are too hot. Located on the dorsum/Top side of tongue.
Saliva is nessary to stimulate taste buds to detect flavor.
Vallate Papille
The large trough where taste buds are also located. Forms a V on the posterior portion of the tongue.
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