In vitro evaluation of endodontic debris removal as obtained by rotary instrumentation coupled with ultrasonic irrigation

Jarbas Gonçalves Passarinho-Neto, Melissa Marchesan, Rafael Brandão Ferreira, Ricardo Gariba Silva, Yara Teresinha Correa Silva-sousa, Manoel D. Sousa-Neto

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The cleaning capacity of rotary Ni-Ti instrumentation using Profile GT files, coupled with irrigation energised by ultrasound, was evaluated. Thirty-six human mandibular incisors were instrumented in vitro using the crown-down technique with the Profile GT system to 1 mm from the anatomical apex to a size 30.04 taper file. The instrumented teeth were then divided randomly into four groups where various final irrigations were used: Group I: 100 ml of 1% NaOCl with a Luer-Lok syringe (control group); Group II, Group III and Group IV: final irrigation with 100 ml of 1% NaOCl energised by ultrasound for 1, 3 and 5 min, respectively. After biomechanical preparation, the apical thirds of the roots were submitted to histological processing and examination. The specimens were analysed at 40× magnification and the images submitted to morphometric analysis with an integration grid. ANOVA showed a statistically significant difference (P < 0.01) between the irrigation techniques. Group I (Luer-Lok syringe) showed the highest percentage of debris (35.81 ± 4.49) and was statistically different from the other groups energised by ultrasound: Group II (27.28 ± 4.49), Group III (24.39 ± 5.72) and Group IV (18.46 ± 5.25). It was concluded that rotary instrumentation using Ni-Ti files associated with final irrigation of 1% NaOCl energised by ultrasound leads to better debris removal from the apical third of mesio-distally flattened root canal.

Original languageEnglish (US)
Pages (from-to)123-128
Number of pages6
JournalAustralian Endodontic Journal
Volume32
Issue number3
DOIs
StatePublished - Dec 1 2006
Externally publishedYes

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Endodontics
Syringes
Ultrasonics
Dental Pulp Cavity
Incisor
Crowns
Analysis of Variance
Tooth
Control Groups
In Vitro Techniques
titanium nickelide

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

In vitro evaluation of endodontic debris removal as obtained by rotary instrumentation coupled with ultrasonic irrigation. / Passarinho-Neto, Jarbas Gonçalves; Marchesan, Melissa; Ferreira, Rafael Brandão; Silva, Ricardo Gariba; Silva-sousa, Yara Teresinha Correa; Sousa-Neto, Manoel D.

In: Australian Endodontic Journal, Vol. 32, No. 3, 01.12.2006, p. 123-128.

Research output: Contribution to journalArticle

Passarinho-Neto, Jarbas Gonçalves ; Marchesan, Melissa ; Ferreira, Rafael Brandão ; Silva, Ricardo Gariba ; Silva-sousa, Yara Teresinha Correa ; Sousa-Neto, Manoel D. / In vitro evaluation of endodontic debris removal as obtained by rotary instrumentation coupled with ultrasonic irrigation. In: Australian Endodontic Journal. 2006 ; Vol. 32, No. 3. pp. 123-128.
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abstract = "The cleaning capacity of rotary Ni-Ti instrumentation using Profile GT files, coupled with irrigation energised by ultrasound, was evaluated. Thirty-six human mandibular incisors were instrumented in vitro using the crown-down technique with the Profile GT system to 1 mm from the anatomical apex to a size 30.04 taper file. The instrumented teeth were then divided randomly into four groups where various final irrigations were used: Group I: 100 ml of 1{\%} NaOCl with a Luer-Lok syringe (control group); Group II, Group III and Group IV: final irrigation with 100 ml of 1{\%} NaOCl energised by ultrasound for 1, 3 and 5 min, respectively. After biomechanical preparation, the apical thirds of the roots were submitted to histological processing and examination. The specimens were analysed at 40× magnification and the images submitted to morphometric analysis with an integration grid. ANOVA showed a statistically significant difference (P < 0.01) between the irrigation techniques. Group I (Luer-Lok syringe) showed the highest percentage of debris (35.81 ± 4.49) and was statistically different from the other groups energised by ultrasound: Group II (27.28 ± 4.49), Group III (24.39 ± 5.72) and Group IV (18.46 ± 5.25). It was concluded that rotary instrumentation using Ni-Ti files associated with final irrigation of 1{\%} NaOCl energised by ultrasound leads to better debris removal from the apical third of mesio-distally flattened root canal.",
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