A STUDY ON THE ANATOMY OF THE PULP CHAMBR FLOOR OF THE PERMANENT MANDIBULAR FIRST MOLAR

Kwon,  Hyuk-Choon

J Korean Dent Assoc > Volume 22(5); 1984 > Article

The Journal of The Korean Dental Association 1984;22(5):423-427.
Published online May 31, 1984.

하악 제1대구치 치수저의 해부학적 고찰

권혁춘

서울대학교 치과대학 보존학교실

A STUDY ON THE ANATOMY OF THE PULP CHAMBR FLOOR OF THE PERMANENT MANDIBULAR FIRST MOLAR

Hyuk-Choon Kwon

Dept. of Operative Dentistry College of Dentistry, Seoul National University

Abstract

A total of 114 extracted human mandibular first molars were used to study the configuration of the floor of the chamber. The specimens were ground and the pulp chamber was examined with a magnifier and explored with sharp explorer. The study showed the shape of the pulp chamber, number of root canals, and the type of canal orifice. The results were as follows; 1. In so far as observing the shape of the pulp chamber of the teeth, 58.8% of the teeth were square, 34.2% were triangle and 7.0% were ovoid shape. 2. 58.8% of the specimens have 4 root canal orifices, 34.2% have 3 root canal orifices, 7.0% have 2 root canal orifices. 3. 41.2% of the specimens show 'H' shape, 17.6% show 'Square' shape, 31.6% show 'T' shape, 2.0% show 'reverse-T' shape and 7.0% show 'I' shape.