Method: Subjects (n = 12) with blood-culture verified S. mutans bacteraemia during years 2002-2007 were identified from the Helsinki University Central Hospital Microbiology Laboratory database and included in the study. Ten patients gave their consent and the same number of sex, age and social background matched controls were recruited. Data collected included medical and dental records, panoramic jaw x-rays before and after hospital admission, and telephone interviews during years 2006-2007.
Result: The ten patients (8 men, 2 women) with septicaemia had suffered more of childhood caries than controls ( 50% vs. 20%) and significantly more teeth had been extracted from them, respectively ( 70% vs. 10%, p<0.05). Apart from this dental history, however, no difference was found in panoramic x-ray oral health status between the cases and controls. No difference was either found in oral home care, in frequency of tooth brushing, dental flossing, or using interdental brushes. However, after the S. mutans sepsis episode the patients reported brushing their teeth more often than before: 10/10 vs. 7/10 patients, respectively, brushed their teeth daily.
Conclusion: The findings of this study indicate that childhood caries and need for extractions may act as indicators of increased risk for serious medical complications including S. mutans sepsis later in life.