Final Review OH Flashcards
Interphase [mitosis]
(1) between division, “growth” or “living”
Prophase [mitosis]
(2) chromosomes condense, nucleus membrane disintegrates
Metaphase [mitosis]
(3) chromosomes line-up
Anaphase [mitosis]
(4) chromosomes split into chromotids
Telephase [mitosis]
(5) division into two daughter cell
Nucleus returns
Induction [Developmental Processes]
(1) cells establishing of pathways
Proliferation [DP]
(2) controlled growth + accumulation of byproducts
Differentiation [DP]
(3) change is cells to become distinct
Morphogenesis [DP]
(4) specific tissue structure/form develops
Maturation [DP]
(5) adult function/size attained
Histology
study of microscopic structure/function of tissue
Embryology
study of prenatal development
Oral Tissue Turnover Time (longest to shortest)
Hard Palate (24) - Floor of Mouth - Buccal/Labial Mucosa - Attached Gingiva - Taste Buds - Juntional Epithelium (5)
Periodontium
Cementum, Alveolar Bone, PDL
Odontogenesis
Tooth Development
Tooth Development, stages
Initiation, Bud, Cap, Bell, Apposition/Maturation
Initiation Stage [TD]
6-7 week (embryonic). Stomodium. Induction - # of teeth present - *anodontia, supernumerary
Bud Stage [TD]
8th week (embryonic). Proliferation -size - *micro/macrodontia
Cap Stage [TD]
9-10 week (fetal). Morphogenesis - tooth formation - *dens’n’dente, geminaton, fusion, tuberables
Bell Stage [TD]
11-12 week (fetal). Differentiation - dental papilla within enamel organ differentiates
Apposition Stage [TD]
[secretory] enamel/dentin/cementum secreted in matrix layers
OEE>Stellate Reticulum>Stratum intermedium>IEE
layers that support enamel production CAP STAGE
Cervical Loop
most cervical part of Enamel Organ. Responsible for root development
HERS
Hertwig’s Epithelial Root Sheeth - shapes the root
Alveolodental Ligament Fiber Subgroups [PDL]
alveolar crest, horizontal, oblique, apical, interradicular
PDL
connective tissue (mostly collagen) that attaches cementum of tooth to the alveolar bone
Gingival Fiber Group [PDL]
circular, dentogingival, alveologingival, dentoperiosteal
PDL Ligaments
Alveolodental, Interdental, Gingival Fiber Group
Mucosa: types
lining, masticatory, specialized
Lining Mucosa
nonkeratinized epithelium. buccal/labial mucosa, ventral tongue, floor of mouth, soft palate
Masticatory Mucosa
keratinized epithelium. attached gingiva, hard palate, dorsal tongue
Specialized Mucosa
doral/lateral tongue
Orthokeratinized
stratified squamous epithelium found in masticatory mucosa. basal layer - prickle layer
Parakeratinized
stratified squamous epithelim found in masticatory mucosa. contains nucleus
Acellular Cementum
[primary] first, slower. Sharpey’s mineralized
Cellular Cementumum
[secondary] later, faster. Sharpey’s partially mineralized
Cementum Trauma, lines
Arrest Lines ("tree")
Reversal Lines ("scalloped")Cementogenesis
cementum formation.
HERS disintegrates > undifferentiated cells > cementoblasts > «»
Cleft Lip
[face and neck dev] failure of fusion btwn maxillary process + medial nasal process
Hydrodynamic Theory
widely accepted theory on why dental tubules experience sensitivity
Acinus
group of secretory cells (grapes) [glands]
Lumen
acinus central opening where saliva is deposited
3 Major Salivary Glands
Parotid (largest), Sublingual (smallest), Submandibular (warton’s)
Ranula
blockage of submandibular gland
mucocele in minor salivary gland
Thyroid Gland
week 3-4, in neck, controls metabolism,
Lymphatics
help fight disease, ie. tonsils, tooth pulp
Tonsils
Palantine, Lingual, Phryngeal (adnoids)
Lymph Nodes
bean shaped; ie. thymus/spleen. Filter toxins
Drainage Patterns of Lymph
into lymph = afferent vessel
out of lymph = efferent vessel
