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Instrument 2



By : Rasha Shehab

By : Rasha Shehab



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    Instrument 2 Instrument 2 Document Transcript

    • The Student Quiz 2<br />Lec 1 & 2 ( DCP – Instruments)<br />Lec 1<br />
      • Scalpales and mylar strips are classified into what type of instruments:
      • Instruments used for removal of tooth substance and restoratives
      • Instruments used for isolation
      • Instruments used for finishing and polishing
      • Instruments used for condensation and packing
      • ----------------- Are function(s) of a periodontal probe :
      • Measure the depth of periodontal pocket
      • Feel the tooth surfaces for defects and/ or irregularities
      • Determine the features and dimensions of restorations
      • Both answers (a) and(c)
      • Rubber impregmented cones (inverted cones) are used for:
      • Isolation
      • polishing
      • carving
      • condensing
      • a mouth mirror that doesn’t produce double images and recommended for clarity vision :
      • regular
      • front-sided
      • silvered on the outer side
      • both (b) and (c)
      • arrange inorder the following instruments(tools) depending on the energy utilized:
      • rotary
      • air abrasion
      • ultrasonic
      • hand
      • lasers
      • 3,5,2,1,4
      • 5,4,1,2,3
      • 4,1,3,2,5
      • 4,1,3,5,2
      • All are types of explorers except:
      • Sheperd’s
      • Sickle probe
      • Periodontal probe
      • Straight explorer
      • Instrument nomenclature includes except:
      • Function
      • Number of angles
      • position
      • number of bevels
      • what is the importance of having the working part at an angle to the central axis of the shaft:
      • to have a significant design
      • to facilitate access to different areas of the teeth
      • to differentiate between right and left instruments
      • to suit the tooth depth
      • bi-beveled instruments are constricted on :
      • excavators
      • angle formers
      • hatchets and straight chisels
      • carvers
      • if the cutting edge is was away from the operator , this indicates that the instrument is:
      • on mesial aspect
      • right instrument
      • distal aspect
      • distal and right instrument
      fill in the blanks<br />
      • before we make a restoration we place a (an) articulating forceps to mark the contacts of teeth in opposing arches during closure.
      • The shaft should be serrated or smooth knurled to avoid sliping from the operater’s hand.
      • A single ring on a shaft indicates a right instrument and a double ring on a shank indicates the presence of a reverse instrument (mesial or distal)
      • This instrument is easy to replace and constricted on mirrors and condencors , those instruments are called cone-socket instruments .
      • Instruments with 2 or more angles in the shank on one plane are described as single-planned instruments.
      Quiz 2<br />Dental Instruments<br />Lec 2<br />
      • 3600450329565A pine leaf-like instrument used for shaping the restoration according to teeth land marks is:
      • Cleioide- discoid excavator
      • Chisel
      • Hollenback carver
      • Enamel hatchet
      • A device where we insert an amalgam capsule to produce a thick smooth amalgam paste:
      • 499110022225Amalgam carrier
      • Amalgamator
      • Amalgam well
      • Spoon excavator
      • An instrument used  to  hold  the  matrices (metal bands or strips) firmly in place around a tooth temporarily   while  the  filling material  is  being  packed  into  place to impart more desirable contour to restorations.  
      • (Hint: to take the surrounding shape of the tooth (example marginal ridges) and make it exactly the same as the original one with carving).
      • 45720001905Rubber dam
      • Cotton rolls
      • Matrix retainer
      • Wooden wedges
      • Instruments with cutting edges like a single beveled hatchet , but makes an angle of 90 or 85 degrees for mesial and distal aspects:
      • Gingival marginal trimmers (GMT)
      • Off-set hatchet
      • Hoe excavator
      • Burnisher
      • Instrument used after carving ,has two different tips, used to fabricate deep fissures on occlusal surface:
      • Scalpel blade
      • Burnishers
      • Excavators
      • Rotary burs
      • Put in order the following process of amalgam restorations:
      • Use an amalgam carver to carve(shape) the occlusal surface for normal jaws closure.
      • Put an amalgam capsule in the amalgamator and place the product in an amalgam well.
      • Use an amalgam carrier to put in the amalgam, and then apply in the cavity.
      • With an appropriate amalgam condencer , condence the amalgam restoration neatly into the cavity .
      • Use a burnisher to create the original tooth fissures on the occlusal surface .
      • 1,5,3,4,2
      • 2, 3,5,4,1
      • 2,3,4,1,5
      • 3,4,5,1,2
      • What does the last number in an instrument formula indicate:
      • Width of the bevel
      • Length of the blade
      • Angle between the blade and the long axsis of the shaft
      • Diameter of the shaft
      • Which instrument(s) contain 4 figures in the instrument formula:
      • Explorers and probes
      • Enamel hatchet
      • Gingival marginal trimmers and angle formers
      • cleioide- discoid excavators
      • specialized chisels used to shape internal dentine walls and for planning enamel rods of cervical cavities of posterior teeth:
      • straight chisel
      • triangular chisel
      • widelstaedt chisels
      • angel formers
      fill in the blanks:<br />
      • applicators are instruments used for carrying and applying sensitive materials to the deepest areas of the cavities.
      • The interproximal carver is for carving proximal amalgam surfaces near interproximal contact areas.
      • For a 4 figure instrument the second number indicates the edge of the blade at an angle other than 90 degrees to the blade
      • The angle between the edge of the blade and the shaft is 95 degrees for mesial aspect and
      • 80 Degrees for distal aspect .
      • The main use of excavators is to scoop out caries
      Good luck for u all <br /> <br />Done by: Rasha Shehab<br />