Radiographic study of the root morphology of mandibular second molars

Autor: Mitsuru Omochi, Takenori Noikura, Shumei Murakami, Guoqiang He, Shigeaki Suenaga, Kazunori Kawano, Akitoshi Jikko, Tsuyoshi Sato
Rok vydání: 1990
Předmět:
Zdroj: Oral Radiology. 6:1-8
ISSN: 1613-9674
0911-6028
Popis: The root morphology of mandibular second molars were investigated by using panoramic radiograms which had been taken from Japan, China, Korea and Canada. The root forms were classified as A, B, C and D types, depending on its divergency. Type C and type D were regarded as a single root form. The frequency of single root is lower than previous reports which have been made by other investigators through observations of extracted teeth. The frequency of single root varied among different areas and races.
Databáze: OpenAIRE