Ringelstein D, Seow W K
Pediatr Dent. 1989 Sep;11(3):198-202.
Accessory canals in the furcation region of primary molars provide pulpal-periodontal communications which have important clinical implications. This study of 75 extracted primary molars using dye penetration under vacuum suction showed that 42.7% have foramina located within the furcation region. There were no significant differences in the prevalence between the first and second primary molars. However, in the second primary molar series most of these foramina were located on the root surfaces within the furcation region, rather than in the immediate area of root division. The high prevalence of accessory canals in the furcation region of primary teeth indicates the need for greater clinical consideration during endodontic and periodontal management.
乳磨牙根分叉区的副根管提供了牙髓与牙周的连通，具有重要的临床意义。本研究对75颗拔除的乳磨牙在真空抽吸下进行染料渗透实验，结果显示42.7%的乳磨牙在根分叉区内有孔道。第一乳磨牙和第二乳磨牙的患病率无显著差异。然而，在第二乳磨牙组中，这些孔道大多位于根分叉区内的牙根表面，而非牙根分叉的紧邻区域。乳牙根分叉区副根管的高患病率表明，在牙髓病和牙周病治疗过程中需要更多的临床关注。
