Term
| what is the most mineral portion of enamel |
|
Definition
|
|
Term
| when talking about dentin, where are the head and tail of the odontoblasts and what do they do? |
|
Definition
head in pulp, tail in tubule
transmits pain messages and repairs |
|
|
Term
| what is the main job of PMNs? |
|
Definition
| phagocytosis (most prominent are neutrophils) |
|
|
Term
| at the JE where are cells the thickest? |
|
Definition
|
|
Term
| what is the main job of the JE? |
|
Definition
| seal off between soft gingival tissues and hard tooth surface |
|
|
Term
| name some factors that can affect probe readings |
|
Definition
pressure of operator
technique
inflammation, discomfort, calculus |
|
|
Term
| as the cells of the JE die where do they go? |
|
Definition
| dead cells from JE go into sulcus |
|
|
Term
| how do new cells of the JE replace old cells? |
|
Definition
they undergo change in deep layer
then they enlarge and migrate to surface
they remain immature until they die |
|
|
Term
| what has the highest cell renewal rate in the whole body? |
|
Definition
| the JE has highest renewal rate in body |
|
|
Term
|
Definition
-ameloblast secretes basil lamina
-basal lamina serves as portion of primary epithelium
-as the tooth erupts, the fused reduced enamel epithelium and surrounding epithelial tissues peel back.
-the cervical portion is attached to neck of the tooth by primary epithelial attachment
-happens at CEJ and is the initial attachment of primary attachment
it takes 3-4 yrs to create JE after the root is formed
then basil lamina and hemidesmomes create secondary JE |
|
|
Term
| where does the initial attachment of the primary epithelial attachment happen |
|
Definition
| at neck of the tooth (CEJ) |
|
|
Term
| what is the most common cell in lamina propria? |
|
Definition
| fibroblasts are most common cell in lamina propria |
|
|
Term
| period of tooth development is called? |
|
Definition
|
|
Term
| what are the stages of tooth development? |
|
Definition
initiation stage
Bud stage
cap stage
bell's stage
|
|
|
Term
| when does the initiation stage begin? tooth development |
|
Definition
| initiation stage begins at 6 weeks |
|
|
Term
| during the initation stage what separates the ectoderm and the mesenchymal tissue? |
|
Definition
| basement membrane separates ectoderm and mesenchymal tissue |
|
|
Term
| what is the dental lamina? |
|
Definition
future curved dental arches of primary dentition
starts from midline for both arches and progresses posteriorly |
|
|
Term
| supernumerary teeth and anodontia (associated with ectodermal displasia) could occur during which stage of tooth formation? |
|
Definition
|
|
Term
| what stage follows the initiation stage and begins at week 8> and involves proliferation of dental lamina to buds or oval masses? |
|
Definition
|
|
Term
| what are some problems that could occur in bud stage? |
|
Definition
|
|
Term
| what stage follows the bud stage and begins at weeks 9/10 where a cap begins to develop and is attached to dental lamina |
|
Definition
|
|
Term
| what occurs in the caps stage |
|
Definition
| differentiation and morphogenesis occur in caps stage |
|
|
Term
| from what tissue is enamel derived from? |
|
Definition
| the ectoderm is the tissue that creates enamel |
|
|
Term
| from what cells does enamel come from |
|
Definition
|
|
Term
| what will the dental papilla become>? |
|
Definition
|
|
Term
| what will the dentinal sac become> |
|
Definition
| alveolar bone and blood supply, pdls peridontium |
|
|
Term
| what is the tissue of origin for the enamel tissue? |
|
Definition
| the IEE inner enamel epithelium |
|
|
Term
| what makes the dental papilla that will eventually become dentin/pulp>? specifically what tissue? |
|
Definition
| mesenchymal tissue makes the dental papilla |
|
|
Term
| what is the protective layer for enamel organ? |
|
Definition
| the OEE outer enamel epithelium |
|
|
Term
| what is the cushion between the IEE and OEE during the caps stage? |
|
Definition
| stellate reticulum is the cushion and provides nourishment |
|
|
Term
| what is the future DEJ? that separates enamel and dentin? |
|
Definition
| the basement membrane is future DEJ |
|
|
Term
| what are the builing blocks of dentin? |
|
Definition
|
|
Term
| mesenchymal tissue condenses in the caps stage to produce the dental sac what will this make? |
|
Definition
| peridontium, cementum, PDL, alveolar bone |
|
|
Term
| what are the 3 layers of the caps stage? |
|
Definition
enamel organ
dental papilla
dental sac |
|
|
Term
| what are some things that could go wrong in caps stage? |
|
Definition
dens in dente (enamel invaginates into dental papilla)
germination- single tooth unsucessfully tries to divide into two
fusion-union of 2 tooth germs
tubercles-extra cusps
|
|
|
Term
| during weeks 11 and 12 of the tooth formation stages layers begin to form, the IEE, OEE, Stellate reticulum and stratum reticulum. what stage is this |
|
Definition
|
|
Term
| what type of cells make up the OEE |
|
Definition
| cuboidal cella or low columnar cells of enamel organ, it creates a protective layer |
|
|
Term
| what cells are the enamel secreting cells of the IEE? |
|
Definition
| ameloblasts, they are cuboidal |
|
|
Term
| what separatest the IEE and the OEE from the dental papilla during the bells stage? |
|
Definition
| basement membrane separates the IEE and OEE from the dental papilla. |
|
|
Term
| what is made first, dentin or enamel? |
|
Definition
|
|
Term
| what is found in the structure for both enamel and dentin? |
|
Definition
| hydroxyapetite crystals that are calcified are found in both enamel and dentin |
|
|
Term
| where do cementoblasts come from? |
|
Definition
| cementoblasts come from PDLs |
|
|
Term
| what outlines the enamel rod? |
|
Definition
| the enamel sheath outlines the enamel rod |
|
|
Term
| what lays down the enamel in layers perpendicular to cell membrane? |
|
Definition
|
|
Term
| what happens during the mineralization stage |
|
Definition
ameloblasts lay down hydroxyapetite and calcify
every 4th day the rod changes
lines are created (the pattern around the tooth called stria of retzium) |
|
|
Term
| which direction do the lines of retzius go? |
|
Definition
curve outward and occlusally from the DEJ
|
|
|
Term
| imbrication lines and perikymata come from what lines? |
|
Definition
| lines of retzius produce these types of lines |
|
|
Term
|
Definition
| primary enamel cuticle it is last thing made by ameloblasts stains easily |
|
|
Term
| what is created after nasmyths membrane is produced and flattened and blend with IEE and OEE? |
|
Definition
| reduced enamel epithelium |
|
|
Term
| hypocalcified enamel would appear as |
|
Definition
spots white to yellow
from insufficient growth of enamel, or crystals not packed together tight enough |
|
|
Term
| what enamel appears normal but thin and can be yellow to gray? |
|
Definition
|
|
Term
| cracks in enamel due to development problems are called |
|
Definition
|
|
Term
|
Definition
| enamel extends into dentin |
|
|
Term
|
Definition
| odontoblasts (that make dentin) migrated to the enamel side |
|
|
Term
| what is formed first the root or the crown? |
|
Definition
|
|
Term
| what is the 1st step in root development? |
|
Definition
| cervical loop - a bilayer rim of IEE and OEE grows deep into mesenchymal tissue of dentinal sac. |
|
|
Term
| what does the cervical loop create that ultimately designs the root? |
|
Definition
|
|
Term
| the hertwigs sheath surrounds the |
|
Definition
| dental papilla (dentin/pulp) |
|
|
Term
what material makes up most of the tooth?
enamel, dentin, cementum? |
|
Definition
| dentin is most prominent in tooth |
|
|
Term
| what happens on the outside of the herwigs sheath |
|
Definition
| odontoblasts secrete dentin |
|
|
Term
| what is important about stellate reticulum of root formation |
|
Definition
there is no stellate reticulum in root.
without it enamel cannot form |
|
|
Term
| what can happen if the hertwigs sheath does not dissinigrate? |
|
Definition
| rests of malssez could become a cyst around 3rd molars, and mandibular canines, must remove all cells and could cause fractured jaw. |
|
|
Term
| what do you call a lost ameloblast on the root? |
|
Definition
|
|
Term
| what are mature cementum cells |
|
Definition
|
|
Term
| what do you call where cementum meets dentin? |
|
Definition
|
|
Term
| what are some developmental disturbances of the cementum? |
|
Definition
concrescence-union of roots (common in maxillary molars)
could have been cause by trauma |
|
|
Term
| what type of tissue forms the pdls |
|
Definition
| mesenchymal tissue forms PDLs |
|
|
Term
| what is responsible for differentiation in roots (splits) |
|
Definition
| hertwigs sheath is responsible for roots dividing into multi rooted tooth |
|
|
Term
|
Definition
| distortion of hertwigs sheath due to pressure or trauma |
|
|
Term
| what is the inflammatory response as a result of tissue disinigration in primary tooth eruption? |
|
Definition
|
|
Term
|
Definition
| when a tooth erupts coronal to the portion of fused tissue peels ack of the crown but fuses at the CEJ which will later become functional epithelium |
|
|
Term
|
Definition
| osteoclasts absorb the alveolar bone between teeth (primary and permanent) with causes resorption and the osteoblasts produce new bone. |
|
|
Term
| what does the REE fuse with to form erupt permanent teeth? |
|
Definition
|
|
Term
| are newly erupted teeth anchored in bone? |
|
Definition
| no it takes years for the root to complete until then they are not anchored to bone. |
|
|
Term
| what type of cyst can form if hertwigs sheath does not dissinigrate and could cause pain, jaw fractures, and neoplastic issues (cancer) |
|
Definition
|
|
Term
| what type of epithelium is found in oral mucosa |
|
Definition
stratified squamous epithelium
and overlying lamina propria (connective tissue) |
|
|
Term
| what are the 3 main tissues of oral mucosa> |
|
Definition
lining mucosa
masticatory mucosa
specialized mucosa |
|
|
Term
| what are some qualities of lining mucosa? |
|
Definition
softer surface texture
moist
can stretch and compress |
|
|
Term
| what are some things in the mouth that are keratinized? |
|
Definition
| tongue, attached tissue, and hard palate |
|
|
Term
| what is responsible for stippling? |
|
Definition
|
|
Term
| name the specific areas that are lining mucosa in the mouth? |
|
Definition
-buccal
-labial
-alveolar below MG line
-lining of floor of mouth
-ventral surface of tongue
-soft palate |
|
|
Term
| is lining mucosa keratinized? |
|
Definition
no lining mucosa is not keratinized.
the interface between lamina propria is smoother (fewer, less pronounced rete ridges) |
|
|
Term
| what are yellowish elevations found on lining mucosa such as the buccal or labial mucosa? |
|
Definition
fordyce spots
from deposits of sebum in sebaceous glands |
|
|
Term
| describe masticatory mucosa ? features |
|
Definition
rubber surface texture
and resilient |
|
|
Term
| what are the specific areas that are considered masticatory mucosa? |
|
Definition
attached gingiva
hard palate
dorsal surface of tongue
ALL ARE KERATINIZED |
|
|
Term
| would you find rete pegs in masticatory mucosa |
|
Definition
| absolutely keratinized tissue tends to have more rete pegs |
|
|
Term
| what are considered specialized mucosa? |
|
Definition
| dorsal and lateral surfaces of tongeue in the form of lateral papillae |
|
|
Term
| what oral mucosa is considered orthokeratinized? |
|
Definition
|
|
Term
| where would you find parakeratinized tissue? |
|
Definition
| on lateral sides of tongue |
|
|
Term
| what happens at the basal layer (deepest) of stratified squamous epithelium? |
|
Definition
| mitosis where new cells form |
|
|
Term
| what happens at the intermediate layer of stratified squamous epithelium? |
|
Definition
|
|
Term
| what happens at the superficial layer of stratified squamous epithelium? |
|
Definition
|
|
Term
| what is the least common form of epithelium |
|
Definition
| orthokeratinized stratified squamous epithelium: includes tongue, hard palate, and attached gingival |
|
|
Term
| the orthokeratinized stratified squamous epithelium consists of 4 layers what are they? |
|
Definition
-basal layer-mitosis is deepest
-prickle layer or stratum spinosum
-granular layer or stratum granulosum (flat and stacked 3-5 cells thick)
-keratin layer or stratum corneum (this goes away in disease bleeds easily and looks shiny but can come back) |
|
|
Term
|
Definition
| cytoplasm filled with keratin, a soft white waterproof material |
|
|
Term
| how many layers are in parakeratinized stratified squamous epithelium. |
|
Definition
4 same layers as orthokeratinized.
basal
prickle
granular
keratin |
|
|
Term
| what is the main difference between parakeratinized and orthokeratinized. |
|
Definition
| keratin layer of parakeratinized epithelium the cells get shed or lost. |
|
|
Term
| what is the main fiber of lamina propria |
|
Definition
|
|
Term
| what are the 2 layers of lamina propria? |
|
Definition
|
|
Term
| what is the blood supply to the lamina propria |
|
Definition
| capillary plexus it is found between the papillary and dense layers |
|
|
Term
| describe attached gingiva |
|
Definition
masticatory mucosa
keratinized
opaque, could have melanin
dull, firm, immobile
stippling |
|
|
Term
| where are lingual papillae found? |
|
Definition
on surfaces of the tongue
filiform
fungiform
follate
circumvallate |
|
|
Term
| what lingual papillae are associated with taste |
|
Definition
-fungiform
-foliate
-circumvallate
taste buds extend from basement membrane to epithelial surface of lingual papillae. there are 30-80 spindle shaped cells.
sensory neurons send info to CNS |
|
|
Term
| what is the most common form of lingual papillae? |
|
Definition
filiform is most common. found on dorsal of tongue.
shaped like fine point cones (look spiky on microscope) |
|
|
Term
| on what form of lingual papillae are taste buds not present? |
|
Definition
|
|
Term
| what is mushroom shaped and appears as reddish dots on tongue? |
|
Definition
|
|
Term
| what are leaf shaped lingual papillae that are 4-11 verticle ridges parallel to each other on lateral surface of tongue? |
|
Definition
|
|
Term
| which are large mushroom shaped raised lingual papillae that form and inverted V shape facing pharynx? |
|
Definition
|
|
Term
| what are the salivary glands that are just behind the circumvallate papillae that flush saliva ? |
|
Definition
|
|
Term
| geographic tongue involves mostly what papillae |
|
Definition
| filiform papillae are changing in geographic tongue |
|
|
Term
| what are the renewal rates of repair in oral mucosa? |
|
Definition
-4-6 days in sulcus
-10-14 days in buccal mucosa |
|
|
Term
| what happens during the repair process |
|
Definition
blood clots inflammatory response
WBC triggers
clots act as guide to form new surfaces
fibroblasts migrate to produce new immature connective tissue
granulation is immature connective tissue
less fibroblasts more blood vessels in granulation
scar tissue gets more fibroblasts and less blood vessels |
|
|
Term
| what are some things that affect oral mucosa with age |
|
Definition
-dry
-less rete ridges
-less fibroblasts
-recession
-less definition with lamina propria
-low collagen turnover
-increase in fordyce spots
-less taste bud |
|
|
Term
|
Definition
| concave gingiva between buccal and lingual, it is always nonkeratinized!! |
|
|
Term
| how is the col affected if there is no contact area? |
|
Definition
| attached gingiva extends uninterupted from facial to lingual |
|
|
Term
| what extends from the marginal gingiva to the JE? |
|
Definition
| free gingival crest, it is what we measure when probing |
|
|
Term
| characteristics of attached gingiva |
|
Definition
-attach to bone
-pink when healthy
-dull when dry
-firm
-immobile |
|
|
Term
| the interdental papillae of anterior vs. posterior? |
|
Definition
anterior-cone shaped
posterior-blunted |
|
|
Term
| what separates the attached and free gingiva with slight depression? |
|
Definition
free gingival groove
it can be translucent |
|
|
Term
| characteristics of free marginal gingiva |
|
Definition
-pink when healthy
-dull
-firm
-lacks stippling
-mobile |
|
|
Term
| what is the histological description of attached gingiva? |
|
Definition
| parakeratinized, stratified squamous epithelium |
|
|
Term
| what are some drugs that can cause gingival overgrowth? |
|
Definition
dilantin
cyclosporin
calcium channel blockers (verapmil, diltiazem, nifedipin)
nifedipin or procardia is the worst offender!!!! |
|
|
Term
| the tissue that faces the tooth is called? |
|
Definition
| dentogingival junction it is in the sulcus JE |
|
|
Term
| where does gingival fluid come from |
|
Definition
| epithelial cells and seeps into sulcus |
|
|
Term
| what does gingival fluid do? |
|
Definition
| allows WBC to reach sulcus and allows antibodies in |
|
|
Term
| after crevicular fluid goes in sulcus, where does it go? |
|
Definition
|
|
Term
| what are some characteristics of the dentogingival tissue? |
|
Definition
stratified squamous epithelium
nonkeratinized
tight packed cells
no rete ridges |
|
|
Term
| what are the stages of secondary attachment of the JE? |
|
Definition
stage 1 JE on enamel
Stage 2 JE enamel and a bit of cementum (long stage)
stage 3 JE on CEJ (long stage)
stage 4 JE apical to CEJ (pathological ginigival recession) |
|
|
Term
| what are some signs of acute inflammation? |
|
Definition
ulcerations of JE
thinning of JE
lamina propria breakdown of collagen fibers
BOP |
|
|
Term
| when inflammation is increased what changes can occur in lamina propria? |
|
Definition
increase blood vessels (PMNs for phagocytosis)
increase crevicular fluid (antibodies and WBCs) |
|
|
Term
| what is the technical name for crevicular fluid? qualities? |
|
Definition
supperative fluid
dead and alive pmns
and dead cells |
|
|
Term
| what is a rinse used to diminish inflammation |
|
Definition
periostat/doxycyline/ tetracylinel low dose
works by attacking enzymes in inflammation |
|
|
Term
| what is an anti inflammatory rinse mixed chairside and delivered into sulcus? |
|
Definition
|
|
Term
| what is a minocyline that is time released over 21 days and patients should not floss after placement? |
|
Definition
|
|
Term
| according to the book je should heal in |
|
Definition
|
|
Term
| according to book patient should come back for a re-eval in |
|
Definition
|
|
Term
| standard of care requires re eval for class IV patients when |
|
Definition
|
|
Term
| what is the main difference between endocrine glands and exocrine glands? |
|
Definition
|
|
Term
| is thyroid endocrine or exocrine? |
|
Definition
| thyroid is and endocrine gland |
|
|
Term
| for endocrine glands (ductless) where does secretion go?? |
|
Definition
|
|
Term
| for exocrine gland, where does secretion go |
|
Definition
| where it will be used example parotid, stensons duct salive |
|
|
Term
|
Definition
-lubricates
-cleanses
-buffers
-enzyme activity for digestion
-antibacterial
-integrity
-pellicl formation (glycoprotiens provide nidus for bacteria) |
|
|
Term
| what are the 2 types of saliva? |
|
Definition
serous: protien enzymes
mucus : mainly carbohydrate fluid
|
|
|
Term
| what controls the serous and mucous saliva? |
|
Definition
|
|
Term
|
Definition
-minerals
-enzymes
-buffers
-electrolytes
-IGA (make more when laugh)
metabolic waste |
|
|
Term
| what are the 3 major salivary glands |
|
Definition
parotid
submandibular
sublingual |
|
|
Term
| what type of saliva is secreted and how much in the largest of all the salivary glands? |
|
Definition
serous saliva
25% in parotid the largest salivary gland |
|
|
Term
| what is the 2nd largest salivary gland, % volume and type of saliva |
|
Definition
| submandibular: 60-65% beneath mandible and submandibular fossa, a mix of serous and mucous saliva. |
|
|
Term
| what is the submandibular duct? |
|
Definition
|
|
Term
| what is the smallest salivary gland % volume and type of saliva |
|
Definition
sublingual: 10%
mix of serous and mucous
found in sublingual fossa |
|
|
Term
| what is the duct for sublingual gland? |
|
Definition
|
|
Term
| the von ebners is located where, and contain what type of saliva? |
|
Definition
| behind cirvumvallate papillae and is serous |
|
|
Term
| what is the appearance of mucous salivary glands |
|
Definition
|
|
Term
| serous has what color cytoplasm |
|
Definition
|
|
Term
| xerostomia can happen because of |
|
Definition
|
|
Term
| what are some treatments for xerostomia |
|
Definition
flouride
artificial lubricant
avoid alcohol
frequent recall |
|
|
Term
| a blocked saliva gland due to a stone |
|
Definition
|
|
Term
| swelling due to retention of saliva that cannot flow out (most common in submandibular and sublingual glands) |
|
Definition
|
|
Term
| inflammation of duct due to smoking it looks like red dots on palate |
|
Definition
|
|
Term
| what is the largest endocrine gland? |
|
Definition
| thyroid is the largest endocrine gland |
|
|
Term
|
Definition
|
|
Term
| what does thyroid control |
|
Definition
metabolic rate
when underproducting it is hypothyroid
when overproducing it is hyperthyroid |
|
|
Term
|
Definition
anterior portion of neck two lateral lobes connected by isthmus.
develops from mesenchymal tissue at the 24th day and originates from the foramen cecum |
|
|
Term
| what is shaped like a bean, and forms in clusters and filters toxins to prevent entry in blood stream |
|
Definition
|
|
Term
|
Definition
| lymphocytes that remove toxins |
|
|
Term
|
Definition
found in epithelium
surrounded by mucous and serous glands
rest on basement membrane
keep surface moist and provide humidity
they trap foreign materials |
|
|
Term
| what are some problems with sinuses? |
|
Definition
abcess with maxillary molars
sinusitis
nitrous oxide
extracted molars |
|
|
Term
| characteristics of enamel |
|
Definition
avascular
no nerves
hardest calcified tissue
if lost then lost forever!!! |
|
|
Term
| where does the tomes process start laying enamel down on tooth |
|
Definition
|
|
Term
| how many ameloblast make the head and tail of enamel (keyhole, fish shape) |
|
Definition
| 3 make tail, one makes head |
|
|
Term
| the enamel side of matrix in concave, so the dentin side is |
|
Definition
|
|
Term
| the line found on all primary teeth formed during birth process? |
|
Definition
|
|
Term
|
Definition
flourosis
enamel dysplasia
appears mottled |
|
|
Term
| how much flouride is in water? |
|
Definition
|
|
Term
| tooth tissues hardest to softest |
|
Definition
enamel
dentin
bone
cementum |
|
|
Term
| when is secondary dentin formed |
|
Definition
| after completion of apices |
|
|
Term
| what is the job of the odontoblasts |
|
Definition
provide nutrition
pain sensation
nucleus of odontoblasts in pulp
hydrodynamic theory |
|
|
Term
|
Definition
| layer of dentin around pulpal wall |
|
|
Term
|
Definition
| 1st predentin that forms and matures with tooth very dense |
|
|
Term
|
Definition
| unmineralized spots short distances in DEJ |
|
|
Term
| where is tomes granular layer found? |
|
Definition
in root it is a band of minut unmineralized spots beneath cementum
|
|
|
Term
|
Definition
next to pulpal wall of older teeth
less tubules, irregular |
|
|
Term
| what happens to odontoblast of older teeth |
|
Definition
odontoblasts are shrunk up
they are in pulp only
not much sensation transmitted |
|
|
Term
| reparative or secondary dentin happens during |
|
Definition
attrition
caries
operative procedures
damaging stimuli |
|
|
Term
| what is a common spot for reparative dentin to lay |
|
Definition
next to pulp chamber and pulp horns in posteriors
incisal edge in anteriors with heavy attrition |
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Term
| tertiary dentin is a response to injury where does it form |
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Definition
under exposed dentinal tubules
caries, cavity prep, attrition, recession |
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Term
| what can happen to odontoblasts in tertiary dentin |
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Definition
| can die and new ones come in from pulp (pulp sends in mesenchymal tissue to become odontoblasts |
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Term
| dentin filled with calciulm salts and no odontoblasts are called |
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Definition
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Term
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Definition
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Term
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Definition
| dentinal tubules with no odontoblasts and no calcium salts |
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Term
| what is the only non mineralized portion of the tooth? |
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Definition
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Term
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Definition
soft connective tissue (cells, intercellular substance, and tissue fluid)
collagen fibers (small)
blood vessels
nerves
denticles (pulp stones)
fibroblasts |
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Term
| where do nerves enter pulp? |
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Definition
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Term
| what are the zones of the pulp? |
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Definition
-odontoblast zone: outermost layer next to predentin layer, it interprets information.
-cell free zone: toward pulp core: acts as buffer
cell rich zone: high number of cells, the reservoir that makes new cells |
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Term
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Definition
formative:
odontoblasts
ground subsance
Sensory: pain/pressure
Nutritive:blood supply
Defensive: inflamatory, sclerosis of dentin, reparative dentin
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Term
| what are age related changes to pulp? |
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Definition
reparative dentin makes pulp chamber smaller
root canals narrower
endo is harder
fibrous intercellular changes
blood and nerve supply decrease with age
denticles larger and more numerous |
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Term
| when cementum meets enamel exactly at CEJ |
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Definition
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Term
| when it does not quite meet enamel at CEJ |
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Definition
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Term
| when cementum slightly overlaps enamel at CEJ |
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Definition
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Term
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Definition
| after dissinigration of hertwigs sheath |
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Term
| what are the functions of cementum |
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Definition
protect dentin
medium for pdl attachment
mending tissue @ fracture site
forms furcation at apical to compensate for attrition |
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Term
| what are the 2 types of cementum, where are they and which is layed down 1st. |
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Definition
acellular is 1st
cellular is after acellular and at apical 1/3 |
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Term
| entrapped cementoblastast are called |
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Definition
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Term
| the organic matrix produced by cementoblasts are located |
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Definition
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