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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 />