Orthodontics > Gateways Question > Flashcards

Gateways Question Flashcards

(37 cards)

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1
Q

2 reason why we may not be able to achieve Andrew’s 6 keys?

A
  • Size of tooth
  • Angulation / inclination of tooth
  • Underlying SK discrepancy
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2
Q

Angulation of tooth can be corrected by?

A
  • Repositing bracket
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3
Q

How to correct curve of spee?

A
  • Rocking chair- Revserse curve of spee
  • Bonding 7
  • URA bite plane
  • Bite turbos
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4
Q

Describe dento alveolar compensation and example?

A
  • Class II- Upper Retroclined lower Proclined
    Class III- Upper Proclined lower Retroclined
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5
Q

Once qualified list 2 things need to work?

A
  • GDC registration
  • Indemnity
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6
Q

Why scope of practice important

A

Because it describe skill and responsibilities of each role and if we do not follow we out patient in risk.

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7
Q

GDC registrant

A
  • Clincal dental technician
  • Dental hygienist
  • Dental nurse
  • Dental technician
  • Dental therapist
  • Orthdontic therapist
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8
Q

Infection virus

A
  • HEP B
  • HEP C
    HIV
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9
Q

List next stage after inocculation injury

A
  • Find hazard and remove it , encourage bleeding and rinse under tap water m. Do not stop bleeding under tap water for few seconds.
    Inform patient .
    Record in accident book
    Donor/ recipient 10ml blood
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10
Q

Name 2 condition of tooth abnormalities

A
  • Amelogenesis AI enamel abnormalities
  • MIH
  • Hypoplasia
  • Dentenogesis DI dentine abnormalities
  • Rubella- infection
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11
Q

Bracket breakages cause?

A
  • Patient factor- Poor OH, Diet,habit, poor attendance,trauma
  • Operator factor- Plaque poor removal,
    Less etching, poor moisture control, figgle with bracket and composite for long time. Less cure
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12
Q

What does etch do?

A
  • Expose enamel prisms, increase surface area to increase micro mechanical attachment.
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13
Q

Which Etch use for Porcelain crown?

A
  • Hydrofluoric acid 9%
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14
Q

Class II div 2 EO features?

A
  • Pronounce Go angle
  • Class II sk
  • Reduce FMPA angle
  • Pronounce chin point
  • Strong lower lip
  • Deep labiomental fold
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15
Q

Class II div 2 IO features

A
  • Retroclined upper central incisors
  • mesiolabial rotated
  • increased overbite
  • Gummy smile
  • Class II molar relationship
  • Broad maxilla
  • Scissor bite Tendency
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16
Q

3 methods of reducing an increase overbite?

Study These Flashcards
A

Increase posterior facial growth
- Bite plane hold lower incisors and let buccal segment grown.
- Reverse curve of spee- Intrude and proline incisor and extrude molars.
- HG- Low pull - Extrude and distalise molars
High pull - Intrude and distalise molars
- Class II elastics - Extrude and Mesial upper incisor and extrude lower molar and Procline lower incisors.

17
Q

Why 2 reason study model use for?

Study These Flashcards
A
  • Tx planing
  • PAR
18
Q

Anchorage loss how can you explain?

Study These Flashcards
A

AP direction- Loss of Xtn space or Mesial movement of U6s.
Vertical- when High buccal canine to align (prevent with piggy back - palatal canine or ectopic canine or reduce overbite.
Transverse - ectopic canine with zing string with SS wire to protect arch form.

19
Q

What is round tripping?

Study These Flashcards
A
  • When move root back and front again.
20
Q

How much space create by proclining lower incisor

21
Q

4 orthodontic method increasing posterior anchorage

Study These Flashcards
A
  • Bonding / Banding 7s
  • TPA/ Nance
  • HG
  • Take canine first then rest of set.
  • Class II elastics
22
Q

What are source of anchorage?

Study These Flashcards
A
  • EO- Skeletal - back of head
  • IO- Skeletal, implant and TADs, simple, compound, reciprocal and Inter and maxillary Anchorage.
23
Q

TB mode of action?

Study These Flashcards
A
  • posture mandible forward stretch soft tissue and force transferred to bone and teeth which cause dental and skeletal change.
    Sk effect - restrain maxilla 1mm
    Enchantment of mandible growth 1-2mm.
    Dentoalveolar effect - Reduce OJ , reduce overbite bilateral open bite and Class III molar relationship.
24
Q

What do you check prior debond?

Study These Flashcards
A
  • Prescription / orthodontist happy with debond
  • Condent from parent and patient
  • Check no spaces and good interdigitagion.
25
Risk of debond ?
- handpiece can get hot if bur is not keep moving back and forth which can burn patient soft tissue and teeth can die. - Enamel scaring - Fracture of restoration - Inhalation or injection.
26
How should clinical photograph stored?
- Secured and password protected and access by clinical staff. - Backed up
27
Types of retention
- Removable retainers - VFR, Hawley - Fixed -Bonded retainer
28
What is difference between crowding and displacement?
- Crowding- How much mm needs to fit crowded teeth 4 ways to assess, visual, digital scan, brass wire and microscope. -Displacement - displacement of contact point of adjacent tooth
29
HG traction and anchorage force
Duration: - 10 - 12 hours Anchorage - 12-14 hours for traction - Magnitude force: Anchorage -250- 300g per side Traction - 400-500g per side Sk effect
30
What is. OIARR?
Orthodontically induced apex root resorption
31
Types of root
- Blunt root, peppette chapped and short root
32
What can cause increase risk of root resorption
- Class II elastic with rectangular wire - Fixed appliances - type of tooth movement - Intrusion movement - Previous trauma - Longer tx.
33
Type of root resorption
- Internal RR- inflammatory and replacement - external RR- inflammatory, replacement , cervical , surface - Combined RR
34
How to monitor RR.
- 6 month DP - Shorter Tx - Limited aim.
35
How does loss of anchorage look ?
- Increased OJ - OJ not reduce and Xtn space closing - Lateral Open Bite during retraction. - Wedge in Nance
36
Thumb suck - Dental feature
- Reduce overbite - AOB - Increased OJ - Retroclined lower - Proclined upper central - Unilateral openbite with mandibular crossbite
37
Hypodontia UL2 tx?
- Class II - Closed space - Class III- Open space for good interdigitation Space closer could be slower - Open space - Beidge as deciduous then implant. - 7mm space and root parallel on root to get implant. -
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