Interesting Cases |

Fourth Canals • Retreatments • Interesting Anatomy • Lateral Canals • Resorption / Perforations
Fourth Canals
#2 and #3 presented with pulpotomies.

Four canals cleaned, shaped and obturated on #3.
Mes/buc and Mes/ling canals merge in apical 1/3.

Article on prevalence (96%) of 2nd canal in mesial buccal root.
Retreatments
| Paste filling on 2nd molar. Mesial roots lacking filling in middle and apical 1/3. | Paste dissolved with solvent. All canals cleaned,shaped, and obturated. |
![]() |
|
| Failing silver point with radiolucency at apex of #24. | Silver point removed and calcium hydroxide placed. | #24 obturated at 2nd appointment. |
![]() |
||
| 5mm of Green .08 NiTi in mes/buc canal of #18. | Separated instrument removed and gutta percha fitted. | #18 obturated. |
![]() |
||
Interesting Anatomy
| Necrotic 2nd molar. | Cone fit with 4 medium gutta percha cones | Oblique Angle Post-op. |
4 Separated Roots indicated. |
![]() |
|||
C-shaped 2nd molar with anastomosis in coronal 1/3.

| Lower Pre-Molar with 2 Separate Roots. | All Canals Three Dimensionally Obturated. |
![]() |
|
| Irreversible Pulpitis #4. | Cone Fit and Sealer. | Oblique Angle Post-Op. | All 3 roots (MB,DB,and Pal) Indicated. |
![]() |
|||
2 Separate Canals in Coronal 1/3 that Merge in Apical 1/3 on #23.

Four Separate Canals and Portals of Exit on #19.
Lateral Canals
| 5mm radiolucency between #29 and #30. | Lateral canal indicated directly into center of radiolucency on distal. |
![]() |
|
| Radiolucency in middle 1/3 of #28. | Lateral canal indicated in middle 1/3. |
![]() |
|
Palatal lateral canal in apical 1/3, branching to the mesial. Also 2 mesial canals indicated.

Resorption / Perforations
| Sinus tract traced by gutta percha cone to mid-root resorption. |
Cone fit gutta percha to apex. |
Gutta and sealer obturating defect in middle 1/3. |
![]() |
||
| Post perforation in middle 1/3 on mesial. |
Down pack with gutta percha and sealer. MTA placed in perforation. |
![]() |
|
| Post removed with solvent and ultra-sonic. Gutta percha and sealer in apical 1/3 with 10mm of post space. |
![]() |
| Apical resorption and radiolucency at apex. | MTA plug in apical 3mm.. | Gutta percha and sealer in middle and coronal 1/3. |
![]() |
||