3BDS: Endodontics pt 3

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what is specification
the process of creating an environment within the RC and periapical tissues after pulp death that allows a calcified barrier to form across the open apex of an immature root
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what are the specification indications
vital radicular pulp in an immature tooth pulpotomy. if vital (inflamed) pulp tissue is present apically after continued root formation may be. expected from surviving Hertwig epithelial root sheath (apexogenesis).
pulpless immature pulp with or without
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what are iatrogenic perforations
an instrument breaches the apex or wall of the root canal
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what are mineral tissues protected by
predestine and odontoblasts in the root canal. by precemntum and cementoblasts on the root surface
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what happens if precementum and predentine become mineralised or if precementum is mechanically damaged
multimnucleated cells colonise and resorption ensues
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what is internal resorption a result of
chronic pulpitis (trauma, caries, iatrogenic procedures)
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what happens if internal resorption is not treated
will progress to perforate the root and pulp will become necrotic
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what's the treatment for internal resorption if perforation doesn't occur
extripate pulp, dress CaOH, obturate with warm gutta percha
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what's the treatment for internal resorption if perforation occurs
defect must be sealed surgically is accessible or intracanal using MTA
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What are the different times of external resorption
surface, inflammatory, replacement, pressure, systemic and idiopathic
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what is the treatment for non vital immature permanent incisor teeth
apecification, apical barrier, revascularisation
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what happens during the 1st visit during the recalcularisation technique
irrigation with NaOCl, dressed with a mixture of ciproflaxin mitranidazole and minocycline for 7 days
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what happens during the 2nd visit during the recalcularisation technique
confirm canal is dry (no exudate), use size 40 flexofile to irrigate tissues and cause bleeding. leave 15 min to form a clot. place MTA over clot, temporise with CW/Coltosol
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ideal properties of obturating materials
no shrinkage on setting, no solubility in tissue fluids, no water absorption , not tooth discolouration , good adhesion/ adaptation to dentine, radiopaque, sets in adequate time, easy to apply and remove using heat, solvent or mechanical instrumentation
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what. are the disadvantages of gutta percha
lack of adhesion to dentine, when heated- shinkage on cooling m, cannot be heat sterilised - place cones in hypochlorite for.1 min
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Card 2

Front

what are the specification indications

Back

vital radicular pulp in an immature tooth pulpotomy. if vital (inflamed) pulp tissue is present apically after continued root formation may be. expected from surviving Hertwig epithelial root sheath (apexogenesis).
pulpless immature pulp with or without

Card 3

Front

what are iatrogenic perforations

Back

Preview of the front of card 3

Card 4

Front

what are mineral tissues protected by

Back

Preview of the front of card 4

Card 5

Front

what happens if precementum and predentine become mineralised or if precementum is mechanically damaged

Back

Preview of the front of card 5
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