ROOT CANAL TREATMENT

ROOT CANAL ANATOMY & ACCESS OPENING

ACCES OPENING – MAXILLARY
1-MAXILLARY ANTERIORS – THEY ALWAYS HAVE ONLY SINGLE ROOT
CENTRAL INCISOR -OVAL
LATERAL INCISOR -OVAL
CANINE -OVAL

2- MAXILLARY PMS

1ST PREMOLAR - OVAL
78% TWO ROOTS
22% SINGLE ROOT
72% TWO CANALS WITH SAME FORAMEN
13% TWO CANALS WITH SEPARATE FORAMENS
6% THREE CANALS WITH 3 FORAMENS

2ND PREMOLAR- OVAL
75% SINGLE CANAL
25% TWO ROOTS

3- MAXILLARY MOLARS

1ST MOLAR- TRIANGULAR
56% FOUR CANALS ie MB2 – WILL BE DISTOPALATAL TO MB1
42% THREE CANALS
2% FIVE CANALS ie DB2
MB canal is most difficult to locate- its very narrow

2ND MOLAR TRIANGULAR
54% THREE SEPARATE ROOTS
46% FUSED ROOTS

ACCES OPENING – MANDIBULAR

MANDIBULAR ANTERIORS

CENTRAL INCISOR - OVAL
70% SINGLE CANAL
30% TWO CANALS / BIFURCATION
 24% TWO CANALS WITH SAME FORAMEN
 6% TWO CANALS WITH SEPARATE FORAMENS

LATERAL INCISOR- OVAL
56% SINGLE CANAL
44% 2ND CANAL PALATAL TO 1ST ONE*

CANINE- OVAL
94% SINGLE CANAL
6% TWO CANALS WITH SEPARATE FORAMENS ie 2 roots

MANDIBULAR PMS

1ST PREMOLAR - OVAL
73% SINGLE CANAL
7% TWO CANALS WITH SAME FORAMEN
20% TWO CANALS WITH SEPARATE FORAMENS*

2ND PREMOLAR - OVAL
86% SINGLE CANAL
2% TWO CANALS WITH SAME FORAMEN
12% TWO CANALS WITH SEPARATE FORAMENS

MANDIBULAR MOLARS

1ST MOLAR – TRIANGULAR / TRAPEZOIDAL
98% TWO ROOTS
2% THREE ROOTS
72% SINGLE CANAL IN DISTAL ROOT
28% TWO CANALS IN DISTAL ROOT*
MB canal is most difficult to locate- its very narrow

2ND MOLAR
87% TWO CANALS IN MESIAL ROOTS
13% SINGLE CANAL IN MESIAL ROOT
92% SINGLE CANAL IN DISTAL ROOT
8% TWO CANALS IN DISTAL ROOT

 THE TOOTH THAT REQUIRES ENDO TREATMENT MORE OFTEN THAN ANY OTHER – MAND 1ST MOLAR (MISSED 2ND DISTAL CANAL)

 TOOTH THAT HAS HIGHEST ENDO FAILURE – MAX 1ST MOLAR

 LINGUAL WALL OF THE MAND TEETH THAT IS MOST PERFORATED DURING AO- DUE TO
LINGUAL INCLINATION - MAND 1ST PM

 THE ONLY MAND TEETH THAT IS SLIHTLY LABIALLY INCLINED – MAND CANINE

 MB ROOT IN MAX MOLARS IS THE MOST COMPLX ROOT AMONG ALL TEETH- - EITHER HAS MB2 OR ACCESSORY CANALS

 HIGHEST INCIDENCE OF ACCESSORY CANALS – MAX 2ND PMs with 60%

 TEETH WITH CLOSEST PROXIMITY WITH MAX SINUS - PMs & 1st MOLAR

 U-SHAPED RADIOLUCENCY SEEN ABOVE MAX 1ST MOLAR – ZYGOMATIC PROCESS

 CURVED ROOT – MAXILLARY LATERAL INCISOR