3

Maxillary anterior teeth

Young patients access cavity triangular Elder patients have ovoid shape

Maxillary central incisor

Maxillari lateral incisor

Apical curvature Towards distal

Maxillary canine teeth

In coranal third wide canals Middle third ovoid shape canal Apical third rounded canal

Mistakes
perforation

Inclination of tooth overloked

Ledge formation due to straight line access not performed
Pulp remnants left behind

Using wrong size instrument (mostly large) (ledge or perforation)

Mandibular anterior teeth

Mandibular anterior teeth

Lingual face of tooth divided in to 9 parts. Access cavity prep starts from the part which is in the middle Bur should be parallel to root aligment



Mandibular central and lateral incisor

Wide pulp towards bucco-lingual

In elder patients narrow canals due to seconder dentin formation

40% possibility 2 canals

Mandibular Canine teeth

Narrow towards mesio-lingual 20% distal curve

Mistakes



Maxillary premolar teeth

Maxillary premolar tooth

Preparations should start from central groove Bur should be parallel with long axis of root

With non cutting tip bur remove roof of pulp chamber Cavity ovoid shape

Maxillary premolar tooth

Maxillary 1st premolar

Ovoid shape cavity

Maxillary 2nd premolar

Wide and single canal

Bayonet root shape 24% possibility 2 root 2 canals

Mistakes

Inadequate access cavity Too much tooth distruction, pulp chamber is not reached

Coronal flaring have not been done

Mandibular premolar teeth

Mandibular premolar tooth
Preparations should start from central groove Bur should be parallel with long axis of root

Mandibular 1st premolar

Wide canal towards bucco lingual Single canal 48% straight canal

Oval shape canal

20% two canals

Mandibular 2nd premolar

12% tooth 2 foramen

Access cavity oval shape

40% distal curve

Mistakes

Maxillary Molars

Maxillary Molar teeth
Preparations should start from central groove Bur should be parallel with long axis of root


50-85% Mesial root has 2 canals Pulp roof shoul be removed to create adequate access cavity
Maxillary Molar teeth

Maxillary 1st molar

Wide pulp chamber 3 roots

Curvuture towards buccal side in palatal root

Pulp floor darker than walls

Triangular shape acces cavity

Elder patients have narrow canals, canal orifices are close to each other

Maxillary 2nd molar

35% single root 2 canals 3rd canal should searched with precaution

Mistakes

Pulp roof have not been removed

Aggressive tooth structure is removed In calsified canals risk of perforation

Rotated tooth

Rotated tooth with crown restoration

Ledge formation due to large file Perforation due to root curvature

Mandibular Molars

Mandibular 1st molar

Wide pulp chamber

Mesial Root with 2 canals

Distal root 28% with 2 canals

Access cavity Trapezoid shape

Mandibular 2nd molars

Mistakes