internal structure of tooth

abscess ailment anatomical anatomy apical arterial artery blood canal capillaries caries carious cavity collection complicated crevice crown decay decayed deep dental dentin dentistry diagram disease enamel fiber fissure gingiva gingival gum health healthcare human illustration infection inflamed inflammation internal isolated jawbone median medical medicine molar nerve odontitis periodontal periodontitis periodontium pulp pulpitis root set sick simple structure superficial tooth toothache vector vein venous vessel