Necrotizing ulcerative gingivitis in children: a 9 year clinical study.J Periodontol. 1975 Dec; 46(12):715-20.JP
Twenty-eight children with ANUG and nine children with noma were studied over the past 9 years. It is concluded that these entities occur only in children from low socioeconomic groups and have a multifactorial etiology consisting of poor oral hygiene and malnutrition. In the case of noma, a prior infection with a viral agent or intestinal parasitism appears to be important predisposing factors.