Mandibular permanent second molar with four roots and root canals: a case report.
Although four-rooted mandibular first molars have been observed on a few occasions in the literature, to the best of our knowledge, four-rooted second molars have not been reported. Here, we describe a mandibular second molar with four roots and canals: two mesial and two distal. Mesial roots were separated in the cervical one-third near the cervical margin, while distal roots were divided at a lower level in the middle one-third of the root. We discuss the possibility of different root and canal variations of the mandibular second molar from a developmental point of view.
Peiris
Roshan
R
Department of Anatomy and Physical Anthropology, Nihon University Graduate School of Dentistry at Matsudo, 2-870-1 Sakaecho-Nishi, Matsudo, Chiba, Japan. rdpeiris@yahoo.com
Pitakotuwage
Nilmini
N
Takahashi
Masami
M
Ohzeki
Saori
S
Nakayama
Mitsuko
M
Sakurai
Shigeru
S
Igarashi
Yuriko
Y
Matsuno
Masanobu
M
Sasaki
Kayoko
K
Satake
Takashi
T
Kanazawa
Eisaku
E
D003786:Dental Pulp Cavity / Q000002:abnormalities* / Q000473:pathology; D005260:Female; D006801:Humans; D008334:Mandible; D008963:Molar / Q000002:abnormalities* / Q000473:pathology; D009811:Odontometry; D019228:Tooth Crown / Q000473:pathology; D014092:Tooth Root / Q000002:abnormalities* / Q000473:pathology; D055815:Young Adult