<unk> , also known as pyorrhea of a toothsocket or gingivitis expulsiva, is a purulent inflammation of the dental periosteum named after American dentist John W.<unk>  (1811–1885).<unk>  produces the progressive necrosis of the alveoli and looseness of the teeth.  The teeth may become very loose and fall out of the sockets. Mark Twain wrote briefly about<unk>  in his short essay, Happy Memories of the Dental Chair, in which he claims to have been examined by Dr.<unk>  himself.
Riggs' disease
Grover's disease
Kienbock's disease
Lev's disease
Schilder's disease
Mondor's disease
Jeune's disease
Majocchi disease