Evaluation of Palatal Furcation Groove and Root Canal Anatomy of Maxillary First Premolar: A CBCT and Micro-CT Study

Figure 2

Measurement of the buccal root with furcation grooves in maxillary first premolars using micro-CT. (a) Vertical measurement. (b) Horizontal measurement. A1: root furcation position; B1: apical position; C1: the start point of furcation groove; D1: the end point of furcation groove; E1: the middle point of CD connection. A1B1: buccal root length; C1D1: furcation groove length; A1C1: length from root bifurcation to the beginning of furcation groove; B1D1: length from apical position to the end point of furcation groove. AB: buccal root canal wall thickness; CD: palatal root canal wall thickness; DE: furcation groove depth (depth of root invagination).

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