Saturday, October 15, 2011

Root canal preparation techniques

Objectives of Root canal preparation
  • Remove remaining pulp tissue
  • Eliminate microorganism
  • Remove debris
  • Shape the root canal
  • So that root canal system can be cleaned and filled

Requirements of Root canal preparation
  •  Prepared canal should include the original canal
  • Apical constriction should be maintained
  • Canal should end in an apical narrowing
  • Canal should be tapered from crown to apex
  • Preparation should be undertaken with copious irrigation
  • The final length of the preparation should not be reduce by treatment
Root canal preparation techniques
Apical to coronal
Coronal to  apical
1.Standardized technique
2. Step back technique
3. Balanced forces technique
Apical to coronal

1 Step down technique
2.Double flared technique
3. Crown down pressure less technique
Coronal to  apical

Standardized technique
Standardized technique
  • Can be use for straight tiny canal
  • Unsuitable for curve canals
  • Common problems

                    Elbow formation
                    Loss of working length

Step back technique
Step back technique
  • Overcomes procedural errors of ST
  • Suitable for Slight to moderate curve canals
  • Not suitable for severely curve canals
  • Can be improve by
                    Specific filing technique
                    Non-cutting tip
                    Flexible files
PPT Note on Root Canal Preparation Techniques

download pdf lecture note 


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