In this case report, we present a maxillary first molar with six canals. A 40-year-old male patient was referred for non-surgical root canal therapy of tooth 16. Under magnification of a surgical operating microscope, a unique morphology with double canal systems in each root was identified. The morphology was characterized by a single palatal root with two canals joining in the apical third, two mesiobuccal canals, and two distobuccal canals with one orifice and two separate foramina.
2.
2
Pineda F
, Kuttler Y
.
Mesiodistal and buccolingual roentgenographic investigation of 7,275 root canals
.
Oral Surg Oral Med Oral Pathol
. 1972;33:101–110
. MEDLINE |
CrossRef
3.
3
Bond JL
, Hartwell G
, Portell FR
.
Maxillary first molar with six canals
.
J Endod
. 1988;14:258–260
. Abstract |
Full-Text PDF (584 KB)
4.
4
Cecic P
, Hartwell G
, Bellizzi R
.
The multiple root canal system in the maxillary first molar: a case report
.
J Endod
. 1982;8:113–115
. Abstract |
Full-Text PDF (1395 KB)
|
CrossRef
5.
5
Christie WH
, Peikoff MD
, Fogel HM
.
Maxillary molars with two palatal roots: a retrospective clinical study
.
J Endod
. 1991;17:80–84
. Abstract |
Full-Text PDF (2010 KB)
|
CrossRef
10.
10
Vertucci FJ
.
Root canal morphology and its relationship to endodontic procedures
.
Endod Top
. 2005;10:3–29
.
aSchool of Dentistry, National Yang-Ming University, Taipei, Taiwan
bDepartment of Dentistry, Taipei City Hospital, Taipei, Taiwan
cNational Yang-Ming University, Clinical and Educational Center of Dentistry, Taipei, Taiwan
dDepartment of Stomatology, Division of Endodontics and Periodontology, Taipei Veterans General Hospital, Taipei, Taiwan
Corresponding author. Department of Stomatology, Division of Endodontics and Periodontology, Taipei Veterans General Hospital, 201, Shih-Pai Road, Section 2, Taipei 11217, Taiwan