Anatomy Midterm Flashcards
Which permanent dentition will replace primary 1st molar
First premolar
What type of tooth is absent in primary dentition
Premolars
Permanent dentition begins at 12 when…
Last primary is lost
Line angle
2 angles meet
Height of contour
Widest
Point angle
3 angles meet
Contact area
2 teeth touch
What adult teeth nonsuccedaneous
Molars
What is located where cusp ridges Converge at central point where grooves meet on a posterior tooth
Central fossa
What permanent maxillary teeth have 3 roots
First molars
Which teeth have a 5th cusp
Maxillary first molar
What does the crown of the tooth do toward the cervical line
Narrows
What’s true of primary teeth in contrast to permanent
Crowns are narrower at the CEJ than permanent
Most maxillary first premolars are bifurcated meaning…
2 roots on the buccal and lingual
Marginal groove
Cross marginal ridges and serve as spillway
Triangular fossa
Termination of triangular grooves (center)
On the lingual surfaces of the anterior teeth, what are the rounded raised borders on the mesial and distal called
Marginal ridges
The maxillary second premolar differs from the maxillary first premolar by
Maxillary 2nd has 1 root
Which permanent tooth has 5th supplemental lingual cusp and what is it called
Maxillary first molar and Cusp of Carabelli
Rounded enamel extension on incisal ridge of newly erupted central and lateral incisors
Mamelons
Relationship between maxillary and mandibular teeth when jaws are fully closed
Occlusion
Jaw position that produces maximal stable contact between the occluding surfaces of maxillary and mandibular
Centric occlusion
Key to angles classification
Permanent maxillary first molar
Which 2 teeth vary in form more than any other teeth
3rd molars and maxillary lateral incisors
Class 1 occlusion
Neutrocclusion
Class 2 division 1 occlusion
Distocclusion and anterior labioversion
Class 2 division 2 occlusion
Distocclusion and anterior linguoversion
Class 3 occlusion
Mesiocclusion
Embryology
Study of prenatal development
Stages of prenatal development
Preimplantation, embryonic, and fetal
First signs of tooth development found in anterior mandibular region of developing embryo
5-6 weeks old (embryo)
Process of laying down bone
Deposition
What cells accomplish deposition
Osteoblasts
3 primary periods of odontogenisis
Growth, calcification, eruption
Enamel forming cells
Ameloblasts
Movement of teeth into functional position
Eruption
Rectangular area between 2 ridges running under nose
Philtrum
Angle at the corner of the mouth
Labial commissure
Space between teeth and inner mucosal lining of lips and cheeks
Vestibule
Narrow band of tissue that connects two structures
Frenum
Normal gingival tissue
Surrounds tooth in collar like fashion, self cleansing, firm, resistant, tightly adapted to tooth/bone
What type of gingiva forms the soft wall of gingival sulcus
Free, unattached, marginal
Pear shaped pad of tissue behind maxillary central incisors
Incisive papilla
Where are tastebuds located
Fungi form papillae, trough of vallate papillae
Sense of touch for tongue
Filiform papillae
Which tooth is cornerstone of dental arch and why
Canine because it’s longest and lost first
Plaque
Soft (biofilm)
2 forms of periodontal
Gingivitis and periodontal disease
Periodontal disease
Infectious disease process that involves inflammation of structures of periodontium can cause cardio disease low birth weight and respiratory disease
Calculus
Tartar hard penetrates in cementum
Structure of periodontium
Gingivae, epithelial attachment, sulcus, periodontal ligaments, cementum, alveolar bone
Histology
Study of structure and function of tissue on a microscopic level
Beginning of second week to end of eighth week
Embryonic period
Dentin forming cells
Odontoblasts
Tissues that support teeth in alveolar bone
Periodontium
Cells that resorb cementum
Cementoclasts
Cells that resorb bone
Osteoclasts
What is oral mucosa made of
Stratified squamous epithelium
Name of first period of prenatal development
Preimplantation period
Which period of prenatal development is the most critical
Embryonic
Embryonic layer that differentiates into cartilage, bones and muscles
Mesoderm
Which branchial arch forms bones, muscles, nerves of face and lower lip
First
Which branchial arch forms side and front of neck
Second
When does development of face occur
5-8 weeks
Bone loss or removal
Resorption
Name of largest mineral component in enamel
Calcium
Pain transmitted through Dentin by
Dentinal fibers
Reparative dentin
Tertiary dentin
What cells form substance of pulp
Fibroblasts
Another word for primary teeth
Deciduous