Prevalence of microorganisms in root canals of human deciduous teeth with necrotic pulp and chronic periapical lesions.
The objective of this study was to evaluate bacterial prevalence in 31 root canals of human deciduous teeth with necrotic pulp and periapical lesions using bacterial culture. After crown access, the material was collected using absorbent paper points for microbiological evaluation and determination of colony forming units (CFU). Anaerobic microorganisms were found in 96.7% of the samples, black-pigmented bacilli in 35.5%, aerobic microorganisms in 93.5%, streptococci in 96.7%, and S. mutans in 48.4%. We concluded that in human deciduous teeth root canals with necrotic pulp and periapical lesions the infection is polymicrobial, with a large number of microorganisms and a predominance of streptococci and anaerobic microorganisms.
Pazelli
Luciana Cunha
LC
Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto.
Freitas
Aldevina Campos de
AC
Ito
Izabel Yoko
IY
Souza-Gugelmin
Maria Cristina Monteiro de
MC
Medeiros
Alexandra Sárzyla
AS
Nelson-Filho
Paulo
P
D002648:Child; D002675:Child, Preschool; D015169:Colony Count, Microbial; D003786:Dental Pulp Cavity / Q000382:microbiology* / Q000473:pathology; D003790:Dental Pulp Necrosis / Q000382:microbiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D010483:Periapical Diseases / Q000382:microbiology* / Q000473:pathology; D013291:Streptococcus / Q000302:isolation & purification; D014094:Tooth, Deciduous / Q000382:microbiology* / Q000473:pathology