periodontitis or pyorrhea

abscess alveolar anatomy apical blood bone cameral canal canals care caries cavity cementum cleaning crown cusp decay deep dental dentin dentist dentistry diagram disease diseases enamel foramen gingiva gingival gum health healthy human hygiene illustration inflammatory interdental internal medical medicine molar neck nerve patient periodontal periodontitis periodontium periodontosis procedure pulp pulpitis pyorrhea root science stomatology structure sulcus surgery teeth therapy tooth toothache treatment vector vessel