The prevalence, risk factors and significance of oral manifestations in aplastic anemia have not been well characterized. Thus, in the present study, through a retrospective chart review, we document the prevalence of oral complications in AA patients and the risks for oral manifestations in a case-control study. Schizophrenic patients represent controls. Information includes the following; demographic, clinical and radiographic information for cases and controls. Additional data collection for only AA patients includes prior medical therapy, CBC and differential, disease duration, new oral manifestations during AA treatment and medical treatment response. We determine if systemic clinical features of AA predict oral manifestations, and if oral manifestations predict treatment outcomes for AA patients. Finally complications following dental treatment are compiled and reviewed to establish initial treatment guidelines for these patients.