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54 Cards in this Set
- Front
- Back
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Molar has MB1 and MB2. if you take a mesial shif, MB 2 is ____to MB1
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mesial
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Large Rlucency 1cm diameter on apex of a 19 molar. what's most important way to tell if its endo in origin?
angled shift pulp vitality percussion |
angled?
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Radiolucencies on a lateral side of the root are due to...
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lateral canal infiection
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What is ferrule length?
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1.5-2mm
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what is biological width?
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2mm
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gingival sulcus length
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1-2mm
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post length
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50% of length of root in bone
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GP minimum
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5mm
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Define biological width
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distance from sulcus to...margin of restoration? or alv bone? think its margin of rest
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4 ways to prevent vertical dislodge
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post length/diamter/taper
luting cement active vs passive posts surface configuration |
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with multiple canals, posts go in which canal? why?
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distal - more straight and larger
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what do you use to remove GP in clinic?
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touch and heat
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minimum # of radiographs for a molar w/ 4 canals?
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6?
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name 4 problems of cleaning and shaping a canal?
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ledge formation
creating artificial canal root perf separated instruments |
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worst/most common accient?
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na-hypochlorite
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apical surgery is done via...
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retrograde technique
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transillumination allows you to see
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crack in coronal
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which has 2 canals...mand or max incisors?
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mand
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in the mandibular incisor, which canal is often overlooked?
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lingual
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in mandibular incisors, what type of perf is common?
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labial
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active ingredient in AH plus?
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bismuth oxide
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bismuth oxide is active ingredient in what?
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AH plus
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MTA is used for all but...
a. direct pulp cap b. root end filling c. filling lateral canal d. pulpotomy in primary teeth e. perf repair |
filling lateral canal
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T or F...gates glidden are NiTi?
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F
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T or F....gates glidden @ 2-300 rpm?
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F
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T or F...gates glidden have end cutting?
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F
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T or F...gates glidden oipens coronal 1/3, adds straight line access, reduces chances of straigtening canal
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T
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Which has radial lands, endo or profile?
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profile has radial lands
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Endo has ___rpm, Profile has___rpm
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endo - 600
profile - 300 |
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Endo is/isnot electropolished
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endo is electropolished
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CaOH...t or F...should touch walls?
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F
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When to use hand instruments? 3 reasons
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canals up to size 20
oval/flat/kidney canals very large canals |
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Which creates ledges...SS or NiTi?
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SS
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All of the following are antimicrobial except...
EDTA chlorohexidine Sodium Hypochlorite ALl |
EDTA (lube) in RC prep
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4 drawbacks of silver points
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non-biocompatible
toxicity non adaptable more radioopaque |
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Does AH Plus have silver?
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no
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Percentage of GP in GP?
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20%
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What gives GP its stability?
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Zn Oxide
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% zn oxide in GP?
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70%
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Blue finger spreader is____and red is____
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MF
F - red |
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Where is MB2 in relation to MB1?
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palatal
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how far away is MB2 from MB1
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1.8-2.2 mm
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C-shaped canals are most common in
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mandibular 2nd molar
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cavit needs to be at least (dimension)
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3.5mm
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3.5 mm is the minimum thickness of
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cavit
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EPT test, cold test are negative, but the patient still has pain. what does this mean?
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pain coming from nearby
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5 causes of false +s for pulp testing
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moisture?
neighboring teeth liq pulp necrosis multi canal teeth probe pressure |
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moisture?
neighboring teeth liq pulp necrosis multi canal teeth probe pressure are causes of... |
false +s
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Isolated defect is caused by
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sinus tract
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Treatment for internal resorption?
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RCT
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Lingering pain is a sign of
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irreversible pulpitis
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Reasons to re-treat endo tooth, 4 reasons
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short apical seal
exposure of GP to oral for 21 days or more symptomatic obturated material out of apex |
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why is tooth slooth used?
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biting sensitivity
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Where is the probe placed for EPT?
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incisal/occlusal 1/3
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