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Introduction to Dental Lab Equipment
DA 108 Dental Materials
Safety First!DA must wear safety glasses during these lab
activities:1. operation of rotary equipment
Dental lathe Model trimmer Handpiece
2. using the Bunsen Burner3. chipping plaster or stone from impressions
or models
Model TrimmerTrim excess material
from gypsum or plaster models
Always use safety glasses and protective shield
Always wear lab coat and or lab apron
Gloves should not be worn
Model Trimmer SafetyKeep hands firmly secured against metal base
of model trimmerDo not allow model to lift off base of trimmerKeep fingers away from wheel. Pay close
attention to where your hands are!Keep eyes on model to prevent over-trimmingFlush with clear water when finished with
trimmer
Model VibratorRemoves bubbles
when pouring gypsum into impressions to make model
Use paper or plastic cover to protect unit from spills
Vacuum MachineForms flat plastic
sheets into 3-dimensional shapes by heating and molding over model of patient’s teeth
Stay nearby while machine is heating up
AKA Vacuformer
Burners and TorchesWarm or soften waxHeat solutions and
dental materialsTurn off immediately
after use; do not leave unattended
Tie hair away from face
Alcohol torch has similar uses
Bunsen Burner
Alcohol torch
Dental LathePolish dentures,
crowns, bridges, inlays
Right/Left chuckKeep plastic shield
down for safetyUse pumice slurry
for polishingNew pumice for
each use
Vacuum Mixing MachineAutomatically mixes
stone and plasterCreates smooth
surfaces on models
Dental EnginesHolds burs and
wheels when trimming or polishing appliances in the dental lab
Dremel Tool used in class lab
Plaster/Gypsum BinsStores bulk plaster
or gypsum for easy access
We use smaller labeled canisters in class
ArticulatorHinged metal device
that imitates the movement of the jaw
Patient’s models are attached to simulate jaw movements and dental occlusion
Dental Lab BenchCounters where lab
technicians can sit and work
Some include storage areas
SandblasterUses fine sand to
shape or clean metal appliances
Ventilated area, or suction
Micro-etcher, used in mouth; requires safety glasses and mask
Patient wears glasses also
Waxing unitKeeps dental wax
meltedHOT: use caution
Lab SpatulasUsed to mix lab
materialsVariety of sizesFlexible or stiffSpecific to dental
material mixed
Wax SpatulasUsed to carve and
shape wax itemsVarious sizes and
shapes
Lab KnivesUsed to cut various
lab materialsMany sizes and
shapes
Shears or NippersUsed to trim waxes,
plastic sheets, other items
Act like heavy-duty scissors
Rubber BowlsUsed to hold
materials as they are mixed
FlexibleSized according to
amount of material
Acrylic bowl
Alginate Bowls
More on bowlsAlways disinfect alginate bowl after
taking impressions on human.Not necessary when working on
typodont