The Location of Molar Furcation in Korean.
10.5051/jkape.1998.28.4.569
- Author:
Seung Nam KIM
1
;
Young KU
;
Seong Heui SON
;
Sang Mook CHOI
Author Information
1. Department of Periodontology, College of Dentistry, Seoul National University, Korea.
- Publication Type:Original Article
- Keywords:
furcation;
root trunk;
root fusion
- From:The Journal of the Korean Academy of Periodontology
1998;28(4):569-575
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The objective of the present study was to investigate the vertical and horizontal location of the molar furcations in korean. The samples used in this study included 132 maxillary molars and 120 mandibular molars. Of them, 47 maxillary molars and 34 mandibular molars had the fused roots. So, 85 maxillary molars(54 1st and 31 2nd molars) and 86 mandibular molars(46 1st and 40 2nd molars) were measured. The vertical and horizontal location of molars were measured with divider and digimatic micrometer and their means and standard deviation calculated. The results were summarized as follows: 1. The ratio of fused roots found in this study was the highest in the maxillary second molars with 59%, followed by mandibular second molars(46%) and maxillary first molars(7%) and none were discovered in the mandibular first molars. 2. In the study of the vertical location of molar furcation, the results were as follows : In the maxillary first molars, the length in descending order were distal(5.06mm), mesial(4.52mm) and buccal(4.01mm) and in the maxillary second molar, distal(4.04mm), mesial(4.02mm) and buccal(3.87mm). In the mandibular first molar, the length was 3.69mm on the lingual side and 2.81mm on the buccal side, and in the mandibular second molar, 3.87mm on the lingual and 3.61mm on the buccal side. 3. The location of the mesial and distal furcations in horizontal dimension measured showed following results : buccal and mesial furcations of the maxillary molars and buccal and lingual furcations of the mandibular molars generally found at the center, but the mesial furcation of the maxillary molars were found approximately two thirds toward the palatal aspect.
