Understanding Line Angles and Point Angles in Class 1 and Class 2 cavity preparations : A Complete Guide for Dental Students

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                           CLASS 1 CAVITY:

LINE ANGLE:

  1. FACIO/BUCOPULPAL
  2. DISTOFACIAL
  3. DISTOPULPAL
  4. DISTOLINGUAL
  5. LINGUOPULPAL
  6. MESIOPULPAL
  7. MESIOLINGUAL
  8. MESIOFACIAL







POINT ANGLE 

  1. DISTOFACIOPULPAL
  2. DISTOLINGUOPULPAL
  3. MESIOLINGUOPULPAL
  4. MESIOFACIOPULPAL








CLASS TWO CAVITY :

AXIAL WALL: Internal wall, parallel to long axis of tooth 

GINGIVAL WALL: external wall ,perpendicular to long axis of tooth 

PULPAL WALL: internal wall, perpendicular to long axis of tooth and occlusal to pulpal wall








LINE ANGLE: 

  1. DISTOFACIAL
  2. DISTOLINGUAL
  3. DISTOPULPAL
  4. FACIOPULPAL
  5. LINGUAL PULPAL
  6. AXIOPULPAL
  7. AXIOGINGIVAL
  8. FACIOGINGIVAL
  9. LINGUAL GINGIVAL
  10. AXIOFACIAL 






POINT ANGLE:

  1. DISTOFACIAL PULPAL
  2. DISTOLINGUAL PULPAL
  3. AXIOFACIAL PULPAL
  4. AXIOLINGUAL PULPAL
  5. FACIOGINGIVAL PULPAL
  6. FACIOLINGUAL PULPAL 






CLASS TWO MOD(MESIO-DISTAL-OCCLUSAL)

LINE ANGLE -14

  1. BUCOPULPULPAL-2
  2. PALATOPULPAL-2
  3. AXIOPULPAL-2
  4. AXIOGINGIVAL-2
  5. AXIOBUCCAL-2
  6. AXIOPALATAL-2
  7. BUCOGINGIVAL-2
  8. PALATOGINGIVAL-2

POINT ANGLE:

  1. AXIOBUCCOPULPAL-2
  2. AXIOBUCOGINGIVAL-2
  3. AXIOPALATOPULPAL-2
  4. AXIOPALATOGINGIVAL -2



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