Lecture 1 Flashcards
Dentition
All teeth in mouth at a given time
Secondary
Permanent - erupt age 6-18
Primary
Completed by age 2. Lasts till 6. No premolars.
Maxillary arch
Top
Mandibular arch
bottom
Incisor
Closer to midline, cuts/incises food - Central and lateral
Canine
piercing/teraing
Premolar
Chewing food, helps canines pierce - named for position and proximity to middle (2 types)
Molar
Chewing 3 types
Anterior
Incisors + canines in side lips
Posterior
Premolars, molars - inside cheeks
Universal Numbering System
US only - 1-32 starting at 9 o’clock, Maxillary right. For primary teeth use letters not numbers.
Palmer system
Quadrants, 1-8 on each side, denoted by a number and an angle to designate which quadrant it is. Head on view of teeth.
International System
1 (Maxillary right) 2 (Maxillary left) 3 (Mandibular right) 4 (mandibular left) Quadrant + tooth number 1-8 (like palmer in a way). Primary teeth go 5-6-7-8 for the above numbers in that order.
Cementum
50-65% HA.
Dentin
70% HA
Apical Foramen/Foramina
bottom of tooth, nerve/blood vessel (pulp) entrance
Cementodentinal junction
Exactly what it sounds like.
Cementoenamel junction
Anatomic crown/root meeting point. NECK of the tooth.
Parts of pulp
Pulp chamber, pulp canal
DEJ
Most sensitive area of tooth.
Clinical crown
Visible tooth
Clinical root
Not visible
Gingiva margin
Most coronal point of gingiva
Gingiva crevice
Space from free gingiva to tooth
Free Gingiva
not attached to tooth
Periodontal ligament
Elastic fibers, as thick as 2 human hairs (thicker than cementum). Small line on radiograph is this.
Interdental papilla
Gingiva between teeth (front teeth).
Periodontium
Gingiva, periodontal lig, alveolar bone
Labial/Facial
Anterior teeth
Buccal/Facial
Posterior teeth
Lingual/Palatal
Maxillary only for palatal
Lingual
Mandibular
Incisal
Anterior teeth (edge/ridge)
Occlusal
Posterior teeth
Mesial surface
Proximal surface closer to midline of arch
Distal surface
Distal to midline of arch.
