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ortho 2 lab > preventive ortho > Flashcards

preventive ortho Flashcards

1
Q

part of orthodontics which is concerned with the parents and patients education, supervision of the growth and development of the dentition and the craniofacial structure

A

Preventive orthodontics

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2
Q

PROCEDURES UNDERTAKEN: (2)

A

PARENTS EDUCATION:
CARIES CONTROL:

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3
Q
  • Advised on use of physiologic nipples which permits suckling of the milk by movement of tongue and lower jaw
  • Brushing techniques
A

PARENTS EDUCATION:

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4
Q
  • Proximal surfaces of the deciduous teeth if not restored leads to loss of arch length
  • Bite wing radiographs are essential for diagnosis
A

CARIES CONTROL:

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5
Q

CARE OF DECIDUOUS DENTITION
* Excellent ___________
* Prevent ___________
* __________ applications
* _______________

A

space maintainer
early loss of teeth
Topical fluoride
Pit and fissure sealant

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6
Q

EXTRACTION OF ______________ TEETH
* Should be identified and extracted before they cause displacement of other teeth.
* ________ prevents maxillary incisors from erupting

A

SUPERNUMERARY
Mesiodens

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7
Q

There should ______________ difference in shedding of deciduous teeth and eruption of permanent teeth in one quadrant as compared to other quadrant

A

not be more than 3 months

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8
Q

FACTORS LEADING TO DELAY IN ERUPTION

  • Presence of _____________ deciduous teeth or root.
  • ___________ tooth
  • ______
  • _____________ in deciduous teeth
  • ________ of gingiva
  • ___________ primary teeth
A

over retained
Supernumerary
Cysts
Overhanging restorations
Fibrosis
Ankylosed

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9
Q
  • ___________ does not get resorbed and therefore either prevent the deciduous teeth from erupting or deflect them in abnormal locations
  • Should be diagnosed and surgically removed at appropriate time.
A

Ankylosed teeth

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10
Q
  • ____________ prevents maxillary central incisors from approximating each other.

_________________:
* Prevents normal development due to lowered tongue position and abnormalities in speech and swallowing.

A

Thick maxillary labial frenum
ANKYLOGLOSSIA OR TONGUE TIE

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11
Q
  • can be defined as the provision of an appliance (active or passive) which is concerned only with the control of space loss.
  • appliances used to maintain space or regain minor amounts of space lost, so as to guide the unerupted tooth into a proper position in the arch
A

SPACE MAINTAINERS

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12
Q

_______________
* Space maintaining is the process of preserving a space in a given arch previously occupied by a tooth or a group of teeth

_________
* Space maintainers are fixed or removable appliance used to preserve the space created by the premature loss of a primary tooth or group of teeth

A

JC Brauer:
Boucher:

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13
Q

CAUSES OF SPACE LOSS
1) ____________ of primary teeth
2) ____________________ lesions
3) Loss of permanent incisors ___________
4) _______________ teeth
5) _______________ of permanent teeth
6) Dental ____________

A

Premature loss
Unrestored proximal carious
due to trauma
Congenitally missing
Ectopic eruption
malformation

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14
Q

Space maintainers which are fixed or fitted onto the teeth are called fixed space maintainers.

A

FIXED SPACE MAINTAINERS

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15
Q

The fixed space maintainer generally are constituted of the following components: (4)

A

a) Band
b) Loop / arch wire
c) Solder joint
d) Auxiliaries

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16
Q
  • It is the process during which a portion of the metal being joined is melted & flowed together.
  • Bands are generally joined by welding.
A

welding

17
Q
  • It is the process by which the two metals are joined together by an intermediary metal of a lower fusion temperature.
A

soldering

18
Q

INDICATIONS

  1. Premature loss of 2nd primary molar prior to eruption of 1st permanent molar.
  2. If the tooth needs a crown restoration.
A

CROWN AND LOOP APPLIANCE

19
Q

CONTRAINDICATIONS:

  1. Absence of abutment tooth.
  2. Tooth to be used as an abutment is not ideal.
A

CROWN AND LOOP APPLIANCE

20
Q

INDICATIONS

  1. Bilateral loss of a primary molar before the eruption of the permanent incisors.

2.When 2nd primary molar is lost after the eruption of the 1st permanent molar.

A

BAND AND LOOP APPLIANCE

21
Q

CONTRAINDICATIONS:

  1. Absence of abutment tooth.
  2. Abutment tooth not ideal
A

BAND AND LOOP APPLIANCE

22
Q

Crown and loop appliance is removed prior to eruption of the ____________________________

A

permanent second premolars

23
Q
  • Used when second primary molar requires extraction and first permanent molar has not erupted.
A

DISTAL SHOE SPACE MAINTAINER

24
Q

INDICATIONS

Patients is not medically compromised

Primary 2nd molar is not restorable.

A

DISTAL SHOE SPACE MAINTAINER

25
Q

CONTRAINDICATIONS

Inadequate abutments due to multiple loss of teeth.

Poor oral hygiene.

Lack of parent or/ and patient cooperation

Medically compromised patient.

A

DISTAL SHOE SPACE MAINTAINER

26
Q

used to prevent the 1st molars from moving mesially and to maintain space to compensate for the deciduous teeth that may have prematurely erupted and are expecting permanents to erupt soon.
* It’s a simple maxillary lingual arch but does not contact anterior teeth
* It has an acrylic button in the mid palate.

A

NANCE APPLIANCE

27
Q

INDICATION

  • For maxillary only
  • Prematurely lost deciduous
  • First molars need to be prevented from coming forward (main purpose of the appliance)
  • Bilateral loss of the maxillary primary molars
  • Unilateral loss of more than one tooth in the maxillary arch
  • Used as anchors for moving other teeth, it is anchored to give stability to the molars and for it not to move mesially.
A

NANCE APPLIANCE

28
Q

CONTRAINDICATION

  • Allergies to resin
  • When the permanent 1st molars have not erupted because these are used for anchorage, they are the most preferred for anchorage
  • Posterior crossbite involving malposition of the maxillary first permanent molar
A

NANCE APPLIANCE

29
Q
  • A space maintaining appliance is comprised of stainless steel rings (bands) around posterior teeth (usually molars) a stainless steel wire that passively contacts the lingual surfaces of the teeth.
  • Used to maintain the posterior space in the primary dentition.
  • The lingual arch is often suggested when teeth are lost in both quadrants of the same arch.
A

LOWER LINGUAL HOLDING ARCH

30
Q

PARTS OF LLHA

A
  • Two bands – cemented to two lower molars.
  • U-Shaped bar – Stainless steels wire attached to the bands.
     Passively contacts the lingual surfaces of lower teeth.
31
Q

INDICATIONS
* Loss of second primary molar in the mandible
Bilateral loss of primary teeth in the mandibular arch during transitional dentition
* Maintenance of arch perimeter and incisor positions
* Prevent lingual tipping of the incisors
* Modification of lower lingual arch with omega loops
* Activation of loops help flare anteriors with some distal movement of permanent molars

A

(LLHA)

32
Q

CONTRAINDICATIONS

  • In primary dentition since permanent mandibular incisors and first molars have not yet erupted.
  • Lingual eruption of permanent mandibular central incisors is interfered by the wire.
A

LLHA

33
Q

INDICATIONS:

  • Bilateral loss of the maxillary primary molars or loss of more than one tooth in the maxillary arch.
A

TRANSPALATAL ARCH

34
Q

CONTRAINDICATIONS:

  • Soft tissue problems
  • Bilateral loss of molars
  • Palatal torus
  • Before eruption of the permanent molars
  • Certain class II malocclusion in which upper 1st premolars are removed
  • In class III non surgical cases
A

TRANSPALATAL ARCH

35
Q
  • The appliance is typically used when more than one tooth has been lost in a quadrant.
  • It is often the only alternative because there are no suitable abutment teeth and because the cantilever design of the distal shoe or the band and loop is too weak to withstand occlusal forces over a two-tooth span.
  • Not only can the partial denture replace more than one tooth, it also can replace occlusal function.
  • Two drawbacks of the appliance are retention and compliance.
A

REMOVABLE APPLIANCE

36
Q

INDICATION
1. When aesthetics is of importance.
2. In case the abutment teeth cannot support a fixed appliance.
3. In cleft palate patients who require obturation of the palatal defect.
4. In case the radiograph reveals that the unerupted permanent tooth is not going to erupt in less than five months time.
5. If the permanent teeth have not fully erupted it may be difficult to adapt bands.
6. Multiple loss of deciduous teeth which may require functional replacement in the form of either partial or complete dentures.

A

A
REMOVABLE APPLIANCE

37
Q

CONTRAINDICATIONS

  1. Lack of patient co-operation.
  2. patients who are allergic to acrylic material.
  3. Epileptic patients.
A

REMOVABLE APPLIANCE

ortho 2 lab (6 decks)

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