NDAP test 1

anatomical crown

encased in enamel/ above and below gumline

clinical crown

covered by enamel/ visible above gumline

cemento-enamel-junction

CEJ- where anatomical crown and root meet

Apex

root tip

Apical Foramen

opening at the root tip

pulp canal

runs from apical foramen to pulp chamber

pulp

contains blood vessels and nerves, provides sensation

Enamel

covering entire crown, grey/white/yellow color, hardest material in human body, 100,000PSI, 96/99% inorganic, 1-4% organic ameloblasts.

Dentin

"bulk of tooth" covered by enamel at crown and cementum at root, capable of growth and repair, 2nd hardest calcified tissue in human body, 30% organic odontoblasts, 70%inorganic phosphorus&calcium

cementum

covers root. capable of continual growth, maintains length of tooth. 50/60% organic

Pulp

Blood cells, nerves,connective tissue. vital center of tooth. Forms dentin when irritated.

Periodontium

"alveolar process, gingiva, periodontal ligaments" protects/supports/provides nourishment. *around the tooth*

Alveolar process

Extension of the mandible&maxilla , forms sockets and supports teeth

Periodontal ligament

Thin tissue between Cementum & Bone that connects tooth to alveolar socket

Formative

forms bone & cementum

Supportive

Maintains tooth in socket

Protective

Supports, cushions,and protects from normal mechanical shock

Nutritive

Supplied by blood vessels of ligament

Resorptive

Resorbs bone and cementum

Attached gingiva

extends from base of sulcus to the cheek, lip, tongue soft palate

Gingival Sulcus

space "between" free gingiva and tooth. 2-3mm

Interdental Papilla

Triangular shaped unattached gingiva

unattached gingiva

gingival margin to base of gingival sulcus. not attached to bone

lining mucosa

thin , freely movable- located inside cheek. not attached to bone tears easily

Masticatory mucosa

hard palate , firmly affixed to bone

Specialized mucosa

covers the tounge

Saliva

Oral digestive fluid. body produces 2-3pints every 24hrs---uses Remineralization

Parotid glands

located on the cheeks in FRONT and BELOW each EAR--- 20/25% saliva

Submandibular glands

located in the FLOOR of the mouth on the POSTERIOR PORTION of the MANDIBLE --- 60/65% of saliva

Sublingual glands

FLOOR of mouth UNDER TONGUE **Rivinus/Wharton's duct**---- 10/15% saliva

Facial

surface of the tooth towards the face

Labial

facial surface of anterior teeth toward lips

Buccal

facial surface of posterior teeth

Mesial

surface of tooth towards the midline

Distal

surface of tooth away from midline

Lingual

surface of tooth towards tounge

Incisal

narrow cutting edge of anterior teeth

Occlusal

broad chewing surface of posterior teeth

Proximal

surfaces next to each other when teeth are adjacent in the arch

Contact point

point on the proximal surface where two adjacent teeth actually touch each other.

Interproximal

"between" two adjacent surfaces

Embrasure

"Triangular" space in a gingival direction between the proximal surfaces of two adjoining teeth in contact

Diastema

a space between two teeth

Lateral

Side of tooth

Bifurcated

Tooth with "2" roots

Trifurcated

Tooth with "3" roots

Groove

small linear depression on the surface of a tooth

Cusp

a sharp or rounded projection of a tooth

1. mesiofacial cusp

2. Distofacial cusp

3. Mesiolingual cusp

4. Distolingual cusp

Cingulum

Lingual enamel bulge on cervical third of anterior teeth

Fossa

Rounded or angular depression

1. central

2. lingual

3. triangular

Occlusion

relationship between chewing surfaces of maxillary and mandibular teeth when they are in contact

Sextants

anterior , 6 segments