A influência do comprimento de trabalho na redução de biofilme e bactérias plantônicas em canais ovais com instrumentação reciprocante
| Autor: | Marcos Frozoni, Fernanda Tessaro Cintra, Arieth Cristina Sacomani, Adriana de Jesus Soares |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Veterinary medicine
Root canal Bacterial growth Enterococcus faecalis Reciprocating motion Desinfección medicine Foramen Apical foramen Forame apical General Environmental Science biology Chemistry Foramen apical Biofilm biology.organism_classification Tratamento do canal radicular Root canal therapy Disinfection Tratamiento de conducto medicine.anatomical_structure General Earth and Planetary Sciences Desinfecção Bacteria |
| Zdroj: | Research, Society and Development; Vol. 10 No. 5; e9810514765 Research, Society and Development; Vol. 10 Núm. 5; e9810514765 Research, Society and Development; v. 10 n. 5; e9810514765 Research, Society and Development Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
| ISSN: | 2525-3409 |
| DOI: | 10.33448/rsd-v10i5.14765 |
| Popis: | To evaluate the influence of reciprocating single-file instrumentation with different working lengths (WL) on the reduction of planktonic bacteria and bacterial biofilm in Enterococcus faecalis-contaminated oval root canals. Methodology: Fifty-five human single-rooted canines were used. Fifty were inoculated with E. faecalis for 21 days for biofilm formation. To confirm the formation of biofilm adhered to the root canal wall, 5 contaminated samples from positive control group were analyzed by SEM. Samples were assigned into 3 groups (n = 15) according to working length determined, G+1 root canal preparation 1 mm beyond the apical foramen, G0 root canal preparation at the major foramen, and G-1 root canal preparation 1 mm short of the major foramen. Five roots were not inoculated to serve as a negative control. Bacteriological samples were collected prior to preparation, initial collection (S1), and after reciprocating instrumentation (S2) by disaggregating biofilm to quantify the reduction of planktonic bacteria and intracanal biofilm at different WL. Bacterial quantitation was performed using colony-forming units per milliliter (CFU / mL) count. Statistical analysis was performed at the significance level of 0.05. Results: No bacterial growth was observed in the negative control. All positive controls demonstrated bacterial growth; S1 from all teeth were positive for bacteria with no significant difference. The post-hoc analysis showed G+1 promoting a significantly higher disinfection than G-1 (p |
| Databáze: | OpenAIRE |
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