Methods Of Gaining Space In Orthodontics Question And Answers

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Methods Of Gaining Space Important Notes

  • Proximal stripping
    • Contraindications
      • Young patients
      • Patient with high caries index
  • Methods of Gaining Space
    • Proximal stripping
    • Expansion
    • Extraction
    • Distalization
    • Uprighting of molars
    • Derotation of posteriors
    • Proclination of interiors

Methods Of Gaining Space Long Essays

Question 1. What are therapeutic methods of gaining space? Explain in detail first premolar extraction.
Answer.

Methods Of Gaining Space:

  • Proximal stripping
  • Expansion
  • Extraction
  • Distalization
  • Uprighting of molars
  • Derotation of posteriors
  • Proclination of interiors

First Premolar Extraction:

  • Extraction forms a main part of all space-gaining procedures
  • Extraction is indicated for the correction of
    • Crowding
    • Anteroposterior dental arch relations
    • Vertical problems
    • Skeletal jaw deformities
    • Presence of supernumerary teeth
  • Factors affecting the choice of teeth
    • Condition of teeth
    • Position of teeth
    • Position of crowding
  • Premolars are frequently extracted for this purpose

First Premolar Extractions:

Reasons:

  • To gain space to utilize for correction
  • Satisfactory contact between canine and 2nd premolar
  • The teeth posterior to it offer adequate anchorage

Indications Of First Premolar Extractions:

  • To relieve moderate-severe anterior crowding
  • For correction of class 2, division 1, and class 1 bimaxillary protrusion
  • In case of > 5mm arch length tooth material discrepancy

Orthodontics Methods Of Gaining Space Extraction of first premolar

Orthodontics Methods Of Gaining Space Extraction of second premolar

Question 2. Explain various methods of gaining space.
Answer.

Proximal stripping:

Synonyms Of Methods Of Gaining Space:

  • Approximation
  • Slenderization
  • Disking and Proximal slicing

Procedure Of Methods Of Gaining Space:

  • Proximal surfaces are sliced to reduce the mesiodistal dimensions of teeth

Means:

  • Metallic abrasive strips
  • Carborundum discs
  • Long thin tapered fissure burs
    • Followed by fluoride application

Indications Of Methods Of Gaining Space:

  • 0-2.5mm – Discrepancy
  • Mild to moderate excess tooth material according to Bolton’s analysis

Contraindications Of Methods Of Gaining Space:

  • Young patients
  • High caries index
    • Amount of reduction – less than 50% of enamel

Expansion:

Indications Of Expansion:

  • Constricted maxillary arch
  • Unilateral/Bilateral crossbite

Types Of Expansion:

  • Skeletal
    • By splitting mid palatal suture
  • Dental
    • By jackscrew/springs like coffin spring

Extraction:

  • Commonly extracted are premolars
  • Provides sufficient space for correction
  • Preserves functions and esthetics

Visualization of molars:

  • Advantage – Avoids the need for extraction
  • Indication – Mild to moderate class 2

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  • Time – Before the eruption of 2n permanent molar

Uprighting of molars:

  • Indication: Mesially tipped molar
  • Causes: Premature loss of 2nd deciduous molar
  • Extraction of 2nd premolar

Appliances used:

  • Molar uprighting springs
  • Space regainers

Orthodontics Methods Of Gaining Space A tilted tooth occupies more arch space than an upright one

Derotation of Posteriors:

  • Rotated posteriors occupy more space
  • Derotation of them helps to gain space
  • Appliances used:

Incorporating springs/elastics using a force couple

Orthodontics Methods Of Gaining Space A rooted posterior tooth occupies more space than a normal 2

Proclination of interiors:

  • Indication: Retroclined interiors
  • Precaution: Prevent damage to the soft tissue profile

Methods Of Gaining Space Short Essays

Question 1. Slenderization/Proximal Stripping.
Answer.

Proximal stripping:

  • Synonyms:
    • Approximation
    • Slenderization
    • Disking and Proximal slicing
  • Procedure:
    • Proximal surfaces are sliced to reduce the mesiodistal dimensions of teeth
  • Means:
    • Metallic abrasive strips
    • Carborundum discs
    • Long thin tapered fissure burs
      • Followed by fluoride application
  • Indications:
    • 0-2.5mm – Discrepancy
    • Mild to moderate excess tooth material according to Bolton’s analysis
  • Contradictions:
    • Young patients
    • High caries index
    • Amount of reduction: less than 50% of enamel

Expansion:

  • Indications Of Expansion:
    • Constricted maxillary arch
    • Unilateral/Bilateral crossbite
  • Types Of Expansion:
    • Skeletal
      • By splitting mid palatal suture
    • Dental
      • By jackscrew/springs like coffin spring

Extraction:

  • Commonly extracted are premolars
  • Provides sufficient space for correction
  • Preserves functions and esthetics

Visualization of molars:

  • Advantage – Avoids the need for extraction
  • Indication – Mild to moderate class 2
  • Time – Before the eruption of 2nd permanent molar

Uprighting of molars:

  • Indication: Mesially tipped molar
  • Causes: Premature loss of 2nd deciduous molar
  • Extraction of 2nd premolar

Appliances used:

  • Molar uprighting springs
  • Space regainers

Derotation of posteriors:

  • Rotated posteriors occupy more space
  • Derotation of them helps to gain space
  • Appliances used:
  • Incorporating springs/elastics using a force couple

Proclination of interiors:

  • Indication: Retroclined interiors
  • Precaution: Prevent damage to the soft tissue profile

Question 2. Slenderization/Proximal Stripping.
Answer.

Synonyms Of Proximal Stripping:

  • Approximation
  • Slenderization
  • Disking and Proximal slicing

Procedure Of Proximal Stripping:

  • Proximal surfaces are sliced to reduce the mesiodistal dimensions of teeth

Means:

  • Metallic abrasive strips
  • Carborundum discs
  • Long thin tapered fissure burs
    • Followed by fluoride application

Indications Of Proximal Stripping:

  • 0-2.5mm – Discrepancy
  • Mild to moderate excess tooth material according to Bolton’s analysis

Contraindications Of Proximal Stripping:

  • Young patients
  • High caries index
  • Amount of reduction: Less than 50% of enamel

Question 3. Molar distalization
Answer.

Aim: To move molars in a distal direction to gain space

Methods Of Molar distalization:

  • Extraoral headgear
  • Intra oral Sagittal appliance
    • Intraoral magnets
    • Open coil spring
    • Pendulum appliance
  • Headgear
    • Consists of a face bow with an inner and outer bow
    • Head cap/neck strap

Disadvantage Of Molar distalization:

  • Needs patient cooperation
  • Has intermittent in their action

Sagittal Appliance:

  • Consist of jackscrew positioned parallel to the occlusal plane
  • Use only one tooth at a time

Intra-oral magnets

  • Consists of repelling magnets

Open coil spring:

  • Compressed spring placed between molar and anterior segment

Pendulum appliance:

  • Consist of modified Nance button and helix
  • Activated by opening the helix

Methods Of Gaining Space Short Questions And Answers

Question 1. Derotations.
Answer.

  • Rotated posteriors occupy more space
  • Derotation of them helps to gain space
  • Appliances used
  • Incorporating springs/elastics using a force couple

Question 2. Enumerate methods of Gaining Space.
Answer.

  • Methods of Gaining Space
    • Proximal stripping
    • Expansion
    • Extraction
    • Distalization
    • Uprighting of molars
    • Derotations of posterior teeth
    • Proclination of anterior

Methods Of Gaining Space Viva Voce

  • Visualization is an advanced method of gaining space in recent times
  • A mixed dentition period before the eruption of the second permanent molar is the ideal time for distalization
  • Proximal stripping requires space of 0-2.5mm
  • Bolton’s analysis is done for proximal stripping
  • Proclination of interiors creates space
  • Slenderization is also called approximation, disking, and proximal slicing

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