A young boy presented to the department of oral medicine and radiology, with a chief complaint of pain and mobility of the lower posterior teeth and difficulty in mastication. Clinical history as revealed by his mother was that he had normal development and eruption of deciduous teeth, but started losing teeth by the age of 3 years. She also noticed that his gingiva would become red, and swollen, and bleed easily, and emit foul smell. After exfoliation, the inflammation subsided and gingiva appeared healthy. But then with the …