Fig. 1From: Evaluation of relationship between endodontic access cavity types and secondary mesiobuccal canal detectionOcclusal view of cavity preperation under an operation microscope. 1A, mesiobuccal canal; 1B, distal canal; 1C, palatal canal; 2, PEAC; 3, CEAC; 4, TEAC The cavity widht of each tooth varies due to anatomic causesBack to article page