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Ortodoncia > Maintainers > Flashcards

Maintainers Flashcards

1
Q

What is the importance of maintaining the integrity of the dental arch from the most premature period in the development of the human being allows a normal occlusion

A

Guide to eruption for the permanent teeth
Adequate establish of occlusion in permanent dentition
phonetic function
chewing function
aesthetic function
prevention of oral habits

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2
Q

When does the most common loss occurs __ months after the loss of a primary tooth

A

Within 6 consecutive month after the loss of a primary tooth

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3
Q

Children may experience premature tooth loss

A

local: caries , trauma
systemic: premature birth, cerebral palsy, syndrome/ disorders

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4
Q

teeth have a strong tendency to move ____ even before they erupt into the mouth

This phenomenon is called

A

mesially

mesial thrust tendency

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5
Q

Premises for the use of maintainers: 6
DA TES TIE CAS ANAB TP

A

dental age of the patient
tooth eruption sequence
time elapsed since extraction
degree of crowding and available space
anomalies or absence of permanent teeth
tooth type and position

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6
Q

the provision of an appliance which is concerned only with the control of loss, considering measures to supervise the dentition development

A

Maintenance

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7
Q

appliances used to maintain or regain the mayor amount of so that they can guides the eruption of the permanent teeth into a proper position.

A

Maintainers

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8
Q

Most important function of maintenance is to

A

maintain the mesiodistal relationship

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9
Q

The maintenance of the arch length in the primary and early permanent dentition is important fo the

A

Normal development of the occlusion

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10
Q

premature loss of primary teeth can result in the

A

In the loss of the arch length leading a malocclusion

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11
Q

the pattern of loss depends on many factors including:

A

age, stage of development in which teeth has bee lost, he presence of crowding or space.

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12
Q

maintainers function

A
  1. maintain arch length and perimeter
  2. prevent loss
  3. prevent the development of a malocclusion or reduce its severity
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13
Q

requirements that a maintainers must have

A
  • maintain the desire proximal space
  • it should not interfere with the eruption of the permanent successor teeth
  • it should not interfere with the opposite tooth
  • it must provide enough mesiodistal for permanent teeth
  • it should not interfere with phonation, chewing ot functional jaw movement
  • they should be simple in design
  • easy to clean and maintain
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14
Q

Ideal characteristics of the maintainers

A

simple
strong and stable
passive not cause the movement
do not increase the risk of caries development

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15
Q

general consideration to place a maintainers

A
  • time elapsed after loss
  • px dental age
  • amount of space lost
  • tooth eruption sequence
  • late eruption of permanent teeth
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16
Q

general consideration to place a maintainers
Where closure usually occurs in the fits six months, therefore the maintainer should be placed as soon as possible

A

Time elapsed after loss

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17
Q

general consideration to place a maintainers
Where the stage of root development of the successor tooth should be evaluated, regardless of the child’s age

A

Px dental age

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18
Q

general consideration to place a maintainers
Where if a situations in which ⅔ of the existing fo the correct positioning of the permanent tooth has been lost there will be a need for orthodontic treatment to correct these deviations

A

Amount of space lost

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19
Q

general consideration to place a maintainers
Where the relationship of the developing teeth and adjacent eruptions must be observed in the created by the premature loss of any dental organ

A

Tooth eruption sequence

20
Q

general consideration to place a maintainers
Where it occurs due to partial impaction or deviation in the eruption path of the permanent successor teeth. In this case, extraction of the temporary tooth and placement of the space maintainer are almost indicated.

A

Late eruption of permanent teeth

21
Q

Consequences of premature loss

A
  • decrease in the perimeter and length of the arch with the consequent deviation from the midline
  • causing malocclusions such as **crowding, ectopic eruption or impaction of permanent tooth*
  • alteration of the molar and canine relationship
    changes in the vertical plane such as deep bites, and in the transverse plane such as crossbites.
  • structural changes may occur in the bone tissue according to the age at which tooth loss occurs and defects may occur in the height of the alveolar bone
  • at the soft tissue level, anomalies caused in the gingival mucosa may be favored and oral habits such as atypical swallowing in edentulous spaces may be generated compromising aesthetics and may produce alterations in phonetic development
22
Q

however not every premature loss of a temporary tooth will be treated systematically by placing a maintainer and they not always have the same characteristics

A

!

23
Q

This planning should have a general vision of the px seeking to preserve the total perimeter of the dental arch and maintain the of the tooth lost prematurely
For an adequate planning, the dx must be analyzed with the aim of individualizing each case the most appropriate way

with:
clinic exam
x-ray
dental casts

A

Planning for the maintenance

24
Q

Types of maintainers

A
  • unilateral
    - band and loop
  • bilateral
    - lower lingual arch
    - transpalatal arch
    - nance appliance
    - removable acrylic appliance
25
Q

Types of unilateral maintainers

A

Band and loop

26
Q

Types of bilateral maintainers

A

lower lingual arch
transpalatal arch
nance appliance
removable acrylic appliance

27
Q

Indicated for the loss of the first primary molar

It is indicated to maintain the for a missing second primary molar, only if we have the presence of the first permanent molar

A

Band and loop

28
Q

Advantages of Band and loop

A

allows the eruption of permanent teeth
easy to construct and adjust
not expensive
non invasive or painful

29
Q

bilateral loss of the mandibular primary molars after eruption of the permanent incisors
unilateral loss of more than one tooth in the mandibular arch

A

Lower lingual arch

30
Q

it is design of a bilateral band on molars that are connected by a heavy wire that rests on the cingulum of the anterior incisors

A

Lower lingual arch

31
Q

bilateral loss of the maxillary primary molars
unilateral loss of more than one tooth in the maxillary arch

A

Nance appliance

32
Q

its design is bilateral bands on the first molars that are connected by a heavy wire, and the arch wire is directed toward the palatal surface and is embedded in an acrylic button resting on the soft tissue

A

Nance appliance

33
Q

Bilateral loss of the maxillary primary molars
unilateral loss of more than one tooth in the maxillary arch

  • solo cuando se pierde otro diente además del posterior, uno anterior o premolar, si solo se cae posteriores siempre es mejor poner un nance
A

Transpalatal arch

34
Q

its design of a bilateral bands on the first molars that are connected by a heavy wire that transverse the hard palate without touching soft tissue.

Easier to clean, not very stable as the nance bottom

A

Transpalatal arch

35
Q

there has been a loss of more than one tooth in a quadrant, and the permanent molars haven’t erupted yet

in the mandibular primary dentition, a loss of the second primary molars along with the both first primary molars

A

Removable acrylic appliance

36
Q

Procedure within the field of interceptive orthodontics that can be applied in cases of bone-dental discrepancy where the supporting bone is less that the sum of the size of the dental material

A

Serial extraction

37
Q

was the first to propose in one of his dental treatises, the extraction of deciduous teeth to achieve greater alignment of the permanent teeth

A

Pierre Fauchard

38
Q

Its and interceptive orthodontic procedure

it’s a timed planned sequential extraction of certain deciduous teeth followed by the removal specific permanent teeth in order to guide the eruption of permanent teeth into a favorable position

A

Serial extraction

39
Q

2 basic principales of serial extraction

A
  1. Arch length / tooth size discrepancy
  2. Physiologic tooth movement
40
Q

First basic principal for serial extraction
Arch length / tooth size discrepancy

A

when there is an excess of tooth material, compared to the arch length, specific extraction of some teeth has to be done so that the rest of the teeth can be guided to a normal occlusion

41
Q

Second basic principal for serial extraction
physiologic tooth movement

A

Human dentition shows a physiologic tendency to move towards an extraction space. But if we choose to remove some specific teeth, the rest of them which are in the eruption process, will be guided by the natural forces into extraction spaces

42
Q

Indication for serial extraction

A
  • premature loss of primary teeth
  • arch length deficiency and tooth size discrepancy
  • crowded maxillary and mandibular incisors
  • class I malocclusion
43
Q

Contraindications for serial extraction

A
  • severe class II or CLass III
  • cleft palate cases
  • extensive caries of first permanent molar
44
Q

Serial extraction methods

A
  • Dewey method
  • Tweed method
  • Nance method
45
Q

extraction of deciduous canines
followed by deciduous first molars an finally first premolars

A

Dewey method

46
Q

extraction of deciduous first molar
followed by the first premolar then the deciduous canines and laterals

A

Tweed method

47
Q

extraction of deciduous first molar,
followed by the first premolars then the deciduous canines

A

Nance method

Ortodoncia (14 decks)

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