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KMID : 0358920060330030482
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Journal of the Korean Academy of Pedodontics
2006 Volume.33 No. 3 p.482 ~ p.490
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AN INVESTIGATION OF THE FREQUENCY AND PATENCY OF ACCESSORY CANALS IN FURCATION AREAS OF PRIMARY MOLARS
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Lee Seung-Hyun
Kim Sung-Ki
Jeong Tae-Sung
Kim Shin
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Abstract
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Deep caries in primary molars without early intervention frequently induce a pulpal disease and consequent abscess lesion in surrounding tissue. Especially in many furcation radiolucent lesions of primary molars, accessory canals in furcation areas of primary molars play an important role in theses pathological progress. Although the studies of these communication canals in furcation area of human permanent molar well documented, there has been little research showing their existence in primary molar.
For the purpose of understanding the morphological characteristics of accessory canals at furcation areas of primary molars and examining its frequency and patency, 52 specimen teeth were observed under the scanning electro-microscope and tested with dye penetration under vacuum pressure, and obtained the results as follows :
1. In SEM study, the frequency of accessory foramina viewed from the external and internal furcation area was 60% and 35% respectively. Likewise the diameter of the accessory canals was within the range of 11{sim}107{mu}m and 12{sim}62{mu}m respectively.
2. The frequency of patent accessory canals evidenced by the dye penetrated under the vacuum suction at furca areas in primary molars was 50% among the 20 specimen teeth tested.
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KEYWORD
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Primary molars, Furcation area, Accessory canal, Frequency, Patency
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