Periapical radiogram. Representative periapical radiogram findings of non-diabetic (A) and diabetic (B) nephropathy patients are shown. Mild horizontal and vertical alveolar bone resorption was found in a non-diabetic (A) nephropathy patient. Moderate horizontal alveolar bone resorption and a lot of missing teeth were found in a diabetic (B) nephropathy patient. An arrow indicates vertical alveolar bone resorption.