Refractory endodontic lesion associated with Staphylococci aureus

The objective of this study was to evaluate the bacterial profile in root canals of human primary teeth with necrotic pulp and periapical lesions using bacterial culture. A total of 20 primary teeth with necrotic pulp and radiographically visible radiolucent areas in the region of the bone furcation and/or the periapical region were selected. After crown access, 4 sterile absorbent paper points were introduced sequentially into the root canal for collection of material. After 30 s, the paper points were removed and placed in a test tube containing reduced transport fluid (RTF) and were sent for microbiological evaluation. Anaerobic microorganisms were found in 100% of the samples, black-pigmented bacilli in 30%, aerobic microorganisms in 60%, streptococci in 85%, Gram-negative aerobic rods in 15% and staphylococci were not quantified. Mutans streptococci were found in 6 root canals (30%), 5 canals with Streptococcus mutans and 1 canal with Streptococcus mutans and Streptococcus sobrinus. It was concluded that in root canals of human primary teeth with necrotic pulp and periapical lesions, the infection is polymicrobial with predominance of anaerobic microorganisms.

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“…Reader et al (17) believe that their presence may be due to contamination during endodontic treatment.…”

Section: Discussionmentioning

confidence: 99%

Bacterial profile in primary teeth with necrotic pulp and periapical lesions

et al. 2006

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“…Previous studies using swabs of purulent material have demonstrated poor recovery of strict anaerobes and low mean numbers of isolates per sample (range 1.0-1.6) (Lewis et al, 1990). Pure cultures from an acute dental abscess are unusual (Reader et al, 1994), and mixed aerobic infections are also uncommon, accounting for 6 % of abscesses (Goumas et al, 1997). Dental abscesses caused solely by strict anaerobes occur in approximately 20 % of cases although there is a wide range depending on recovery conditions (6-63 %) (Brook et al, 1991;Gorbach et al, 1991;Goumas et al, 1997;Khemaleelakul et al, 2002).…”

Section: Cultural Analysis Of the Acute Dental Abscessmentioning

confidence: 99%

The microbiology of the acute dental abscess

Robertson

Smith

2009

Journal of Medical Microbiology

190

136

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The acute dental abscess is frequently underestimated in terms of its morbidity and mortality. The risk of potential serious consequences arising from the spread of a dental abscess is still relevant today with many hospital admissions for dental sepsis. The acute dental abscess is usually polymicrobial comprising facultative anaerobes, such as viridans group streptococci and the Streptococcus anginosus group, with predominantly strict anaerobes, such as anaerobic cocci, Prevotella and Fusobacterium species. The use of non-culture techniques has expanded our insight into the microbial diversity of the causative agents, identifying such organisms as Treponema species and anaerobic Gram-positive rods such as Bulleidia extructa, Cryptobacterium curtum and Mogibacterium timidum. Despite some reports of increasing antimicrobial resistance in isolates from acute dental infection, the vast majority of localized dental abscesses respond to surgical treatment, with antimicrobials limited to spreading and severe infections. The microbiology and treatment of the acute localized abscess and severe spreading odontogenic infections are reviewed.

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“…La mayoría de estas bacterias han sido capaces de desarrollar resistencia a los antimicrobianos. 27,28 Una especie de levadura aislada frecuentemente de canales radiculares infectados es Candida albicans. 18,29 Este microorganismo presenta características similares a E. faecalis, como la supervivencia en las monoinfecciones y en ambientes con limitada cantidad de nutrientes, así como en rangos extremos de pH.…”

Section: Methodsunclassified

Clinical significance of Staphylococcus saprophyticus identified on blood culture in a tertiary care hospital

Choi

Woo

Jeong

et al. 2006

Diagnostic Microbiology and Infectious Disease

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RESUMEN. Introducción: el tratamiento odontológico debe considerar rigurosamente la cadena de asepsia para reducir el fracaso, incluso cuando se realizan procedimientos endodónticos. A pesar de ser una recomendación clave en este tipo de intervenciones, esta afirmación no tiene el suficiente alcance, debido a que algunos estudiantes y profesionales no consideran la esterilización de los núcleos antes de utilizarlos. Para ANALYSIS OF ENTEROCOCCUS FAECALIS, STAPHYLOCOCCUS AUREUS, AND CANDIDA ALBICANS IN CAST METAL CORES ANÁLISIS DE ENTEROCOCCUS FAECALIS, STAPHYLOCOCCUS AUREUS Y CANDIDA ALBICANS EN NÚCLEOS COLADOS EN METAL BASE

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Refractory endodontic lesion associated with Staphylococci aureus

Cited by 21 publications

References 7 publications

Bacterial profile in primary teeth with necrotic pulp and periapical lesions

Bacterial profile in primary teeth with necrotic pulp and periapical lesions

The microbiology of the acute dental abscess

Clinical significance of Staphylococcus saprophyticus identified on blood culture in a tertiary care hospital

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