Ortho Final Review
1. What is PPE? Why should all technicians use them? - answersPersonal Protective
Equipment (PPE): Eye Protection, Gloves, Mask &
Lab Coat. All dental items received in the laboratory should be treated as though they
are potentially infected. Items that could potentially be contaminated should be shipped
in a sealed plastic bag so they do not contaminate packing material.
2. What are the different types of disinfectants? - answersIodophor
3. What type of disinfectant can tarnish metal? - answersChlorine
4. What type of disinfectant should not be used to clean counter surfaces? - answersxx
5. What are the different types of ways to solder in orthodontics? - answersTorch
Soldering
Welding
Carbon Tip Electrode
6. What type of flux is used when soldering? - answersAlways use fluoride flux when
soldering.
7. What part of the flame is used when torch soldering? - answersWhen using a flame
you want to use the reducing part of the flame to solder.
8. What is the purpose if flux? - answersThe flux will prevent the formation of oxides.
9. How should a solder joint be finished? - answersWith a rubber wheel made them
smooth
10. How does a palatal expander work? - answersAnterior posterior
11. What are the parts of the expansion screw placed in a Hawley retainer? - answersA
screw placed in the retainer in order for a patient to expand their palate and help move
teeth in a certain direction, creating more space. Expnasion screww are use to exert a
PUSHING force. The lenght of the screw splindle determines the opening of the screw
components. it works antero posterior.
12. What are orthodontic bands made of? How are they fitted? What is their purpose? -
answersAn alloy of stainless steel with nickel & chrome
bands can be cemented to primary or permanent molars respectively.
fixed the appliance in the patient mouth
, 13. How is a Gelb appliance different from other splints? - answersIt has a lingual bar
(only one)
14. What are the different types of ways to process a retainer? How are they
performed? - answersSalt & Pepper Technique-
alternative way- Biostart- material is stronger then the cold cure acrylic.
15. The main difference between the Bio-Star and vacuum forming is: - answersBio
start use pressure--use to made retainer and hard nightguard
Vacuum use suction and heat, soft night guard and bleaching trays
17. What can cause porosity in the acrylic? - answerstoo little pressure
18. What is the purpose of the Bionator appliance? - answersBionator was designed to
establish equilibrium between the tongue and cheeks and provide adequate space for
the dental arches. It effects is antero posterior and vertical jaw relationships by
repositioning the mandible forward and controlling eruption of the teeth
19. What are the wire components of the standard Bionator? - answerslabial bow with
buccal extension
lingual bar
clasp
transpalatal arch bar
20. What is the final thickness of the acrylic for a Hawley retainer? - answers"The plastic
is "built up" one section at a time to about a 2.5 - 3 mm thickness.
21. How do you repair an acrylic plate? - answersReposition the parts and stabilize
them with sticky waxed heavy wire across the fracture. Clean the broken edges of the
fracture of debris and any interferences so the parts will fit in exact proximity.
22. How do you repair a wire? - answersWires cannot be repair need to be replace
23. What does electric spot welding depend on? - answerscurrent & time
. What is orthodontic wire composed of? - answersstainless steel alloy ( nickel &
chrome are added)
3. What is Class I? - answersthe molars are in correct or normal occlusion.
the mesiobuccal cusp of the maxillary first permanent molar occluding in the buccal
groove of the mandibular first permanent molar.
4. What is Class II? - answersthe mandibular first molar is at least a half a cusp or more
distal to its normal relation to the maxillary first molar.
1. What is PPE? Why should all technicians use them? - answersPersonal Protective
Equipment (PPE): Eye Protection, Gloves, Mask &
Lab Coat. All dental items received in the laboratory should be treated as though they
are potentially infected. Items that could potentially be contaminated should be shipped
in a sealed plastic bag so they do not contaminate packing material.
2. What are the different types of disinfectants? - answersIodophor
3. What type of disinfectant can tarnish metal? - answersChlorine
4. What type of disinfectant should not be used to clean counter surfaces? - answersxx
5. What are the different types of ways to solder in orthodontics? - answersTorch
Soldering
Welding
Carbon Tip Electrode
6. What type of flux is used when soldering? - answersAlways use fluoride flux when
soldering.
7. What part of the flame is used when torch soldering? - answersWhen using a flame
you want to use the reducing part of the flame to solder.
8. What is the purpose if flux? - answersThe flux will prevent the formation of oxides.
9. How should a solder joint be finished? - answersWith a rubber wheel made them
smooth
10. How does a palatal expander work? - answersAnterior posterior
11. What are the parts of the expansion screw placed in a Hawley retainer? - answersA
screw placed in the retainer in order for a patient to expand their palate and help move
teeth in a certain direction, creating more space. Expnasion screww are use to exert a
PUSHING force. The lenght of the screw splindle determines the opening of the screw
components. it works antero posterior.
12. What are orthodontic bands made of? How are they fitted? What is their purpose? -
answersAn alloy of stainless steel with nickel & chrome
bands can be cemented to primary or permanent molars respectively.
fixed the appliance in the patient mouth
, 13. How is a Gelb appliance different from other splints? - answersIt has a lingual bar
(only one)
14. What are the different types of ways to process a retainer? How are they
performed? - answersSalt & Pepper Technique-
alternative way- Biostart- material is stronger then the cold cure acrylic.
15. The main difference between the Bio-Star and vacuum forming is: - answersBio
start use pressure--use to made retainer and hard nightguard
Vacuum use suction and heat, soft night guard and bleaching trays
17. What can cause porosity in the acrylic? - answerstoo little pressure
18. What is the purpose of the Bionator appliance? - answersBionator was designed to
establish equilibrium between the tongue and cheeks and provide adequate space for
the dental arches. It effects is antero posterior and vertical jaw relationships by
repositioning the mandible forward and controlling eruption of the teeth
19. What are the wire components of the standard Bionator? - answerslabial bow with
buccal extension
lingual bar
clasp
transpalatal arch bar
20. What is the final thickness of the acrylic for a Hawley retainer? - answers"The plastic
is "built up" one section at a time to about a 2.5 - 3 mm thickness.
21. How do you repair an acrylic plate? - answersReposition the parts and stabilize
them with sticky waxed heavy wire across the fracture. Clean the broken edges of the
fracture of debris and any interferences so the parts will fit in exact proximity.
22. How do you repair a wire? - answersWires cannot be repair need to be replace
23. What does electric spot welding depend on? - answerscurrent & time
. What is orthodontic wire composed of? - answersstainless steel alloy ( nickel &
chrome are added)
3. What is Class I? - answersthe molars are in correct or normal occlusion.
the mesiobuccal cusp of the maxillary first permanent molar occluding in the buccal
groove of the mandibular first permanent molar.
4. What is Class II? - answersthe mandibular first molar is at least a half a cusp or more
distal to its normal relation to the maxillary first molar.
