III.Selected instruments in
restorative dentistry
Instruments for investigation
Mirror
Instruments for investigation
Straight probe
Instruments for investigation
Periodontal probe -calibrated
Tweezer
Preparation - techniques
• Power driven – mostly rotary
• Hand
• Less common – laser, ultrasound etc.
Turbine handpiece
400.000 rpm
Low torque control, vigorous preparation
Electromotor and Air Motor
Electromotor – maximum 40.000 rpm
Air motor – maximum 20.000 rpm
The rpm is possible to modify using hanpieces
with various gear.
High speed
Low speed
Gear 1:1
Oscillation
(rotation is blocked)
High speed handpiece
Red coded. Better control in comparison with the
turbine handpiece
Gear 1:1
Blue coded. Preparation in dentin recommended
Low speed handpiece
Suitable for slow worh e.g. excavation of carious dentin
Special handpieces
• Handpiece for compaction of amalgam
• EWA system ( instrument does not rotate, if
oscillate only)
• Handpieces for endodontology and
implantology
Hand instruments
Chisels
Fopr finishing of gingival wall in class II
Excavator
• Ostrý, lžičce podobný nástroj k odstranění
kazivého dentinu.
Rotary instruments
• Burs and diamonds.
• ISO norm 6360
• 5 figures A – E
A- material (Stainless steel, tungsten -
carbide,diamond)
B,C size and kind of the handpiece (straight
handpiece, contraangle, turbine)
D shape of the working part (ball, pear,fissure)
E further characterization ( blades or grit)
Shape of the shank
Contra angle handpiece Turbine handpiece
Inverted cone, pear formed bur, fissure bur, round (ball) bur
Diamonds
• Blue - standard (90 – 120 mm) ISO 524
Universal use
Diamonds
• Black extra coarse (150 – 180 mm) ISO 544 –
No for cavities, e.g. for cutting old crowns
Diamonds
• Green - coarse (125 – 150 mm) ISO 534,
• For special purposism no for cavities
Diamonds
• Red- fine ( 20 – 40 mm) ISO 514 – finishinf of
preparation – smoothen of beveling
Diamonds
• Yellow – extra fine (12 – 22mm) ISO 504,
• Finishing of composite fillings
Diamonds
• White –ultra fine (6-12 mm) ISO 494 –
Polishing of composite fillings
Preparation instruments
for cavosurface margin
Preparation instruments
for finishing of borders
Preparation instruments
Bur for excavation of carious dentin
Rotary instruments for polishing of
fillings – Arkansas stone
Rotary instruments for finishing
extra fine diamonds
Rubber rotary instruments – for
polishing
Nástroje k úpravě výplní
Rotační kartáčky
Filling instruments
Spatula + condensor
Detail of a condensor
Spatula (3 angled)
Spatula in detailb(3 angled)
Frahm
Discoid-cleoid
Wiland - carver
Burnishers
Instrument for composite fillings
Instrument for composite fillings
Condensor