Axial Contours

By Dr. Vishaal Bhat on Thursday 24 December 2009 with 0 comments




The proximal contacts (mesial and distal)and the facial and lingual axial contours of the wax patterns, are waxed up on to the finished coping.

A.   Proximal Contours
·       Occlusogingival location
- Occlusal third of the posterior crowns
- Maxillary first and second molar in the middle third
·       Faciolingual location
- Facial aspect of the middle of the posterior teeth
- Maxillary first and second molar centered faciolingually
B.  Facial and lingual contours
·       In harmony with, the normally positioned, adjacent teeth
C.   Height of the contour (Maximal prominence of the surface)
·       Facial surface of the posterior teeth
- Occurs in the cervical third
- Extends approximately 0.5mm (beyond the cementoenamel junction)
·      

Lingual surface of the maxillary posterior teeth
- Occurs in the cervical third
- Extends approximately 0.5mm
·       Lingual surface of the mandibular posterior teeth
- Occurs in the middle third
- Extends approximately 0.5mm on  mandibular 1st premolar
- Extends approximately 0.75mm on  mandibular 2nd premolar
-

Extends approximately 1mm on  mandibular molars
D.  Emergence profile
·       The part of the axial contour that extends from the gingival sulcus to the height of the contour. It must be in a straight profile in the gingival third of the axial surface.
·       This will assist the cleaning efficiency of the toothbrush and floss.
Over contour/undercontour

Category: Prosthodontics Notes

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