Reduction in intracanal bacteria during root canal preparation with and without apical enlargement

Abstract

There was no significant difference in intracanal bacterial reduction when Ni-Ti GT rotary preparation with NaOCl and EDTA irrigation was used with or without apical enlargement preparation technique. It may therefore not be necessary to remove dentine in the apical part of the root canal when a suitable coronal taper is achieved to allow satisfactory irrigation of the root canal system with antimicrobial agents.

Eradication of Intracanal Enterococcus Faecalis Biofilm by Passive Ultrasonic Irrigation and RinsEndo System

“…Nakon ispiranja i prije uzimanja drugog uzorka, korijenski kanali u eksperimentalnim skupinama isprani su s 2 ml 3,86-postotnog natrijeva tiosulfata (Na 2 S 2 0 3 ) kako bi se neutraliziralo antimikrobno djelovanje natrijeva hipoklorita (19).…”

“…Immediately after the irrigation and before second sample taking, root canals in the experimental groups were rinsed with 2 ml of 3.86% sodium thiosulfate (Na 2 S 2 0 3 ) to neutralize the antimicrobial activity of NaOCl (19).…”

In-Vitro Evaluation of the Efficacy of PIPS Irrigation System on Disinfection of Type 2 Canal Systems in Molars

“…Techniques which are commonly used, such as paper point sampling followed by CFU counting can determine general bacterial counting from the coronal third which can exclude information from the apical third, where disinfection is more indicative of irrigation efficiency and more difficult to access. Measurement of the apical third cleanliness has been attempted by direct-access methods, as well as split-model methods, both requiring structural modification of the dentin and apical complexities [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. While the method used in this experiment contains similar shortcomings to the paper point/CFU method with regards to sampling location, it provides expeditious sample collection, reuse of samples in order for the same sample to serve as a control, and a well-known, reliable methodology for bacterial quantification.…”

Avaliação histológica da limpeza dos canais radiculares promovida por diferentes métodos de irrigação e análise tomográfica da área apical no comprimento de trabalho

“…Esta possibilidade é, no momento, inviável clinicamente por diferentes razões tais como: variações anatômicas e possibilidade de causar desvios, perfurações e outras complicações. (CARD et al, 2002;COLDERO et al, 2002;FIGDOR;SUNDQVIST, 2007;HOCKETT et al, 2008;PETERS, 2004;SINGLA et al, 2010 …”

“…Porém, o conceito de alargamento apical foi pouco estudado, alguns trabalhos (CARD et al, 2002;COLDERO, et al, 2002;FORNARI et al, 2010;HECKER et al, 2010;STEVEN et al, 2002;YARED;BOU DAGHER, 1994) relatam a influência do alargamento apical no sucesso ou fracasso da terapia endodôntica, ficando o curativo de demora supervalorizado e tido como solução para a eliminação de microrganismos remanescentes no interior do canal radicular após o preparo biomecânico.…”