Ultrastructural morphologic evaluation of root canal walls prepared by two rotary nickel-titanium systems: a comparative study

Sabet, Nihal; Lutfy, Reem Ahmed

doi:10.1016/j.tripleo.2008.05.005

Cited by 7 publications

(10 citation statements)

References 23 publications

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“…Roughness, irregularities, grooves, and less-instrumented surfaces were previously reported in association with rotary instruments (Foschi et al, 2004;Sabet & Lutfy, 2008). However, in contrast with the present study, Foschi et al found the apical third to be the least homogenous and the coronal to be the smoothest (Foschi et al, 2004).…”

Section: Discussioncontrasting

confidence: 82%

“…Roughness of root canal surfaces instrumented with two traditional rotary NiTi systems with different blade geometry was reported by Sabet and Lutfy (). According to this study, reamer‐shape files produced a smoother surface compared to the quasirectangular files.…”

Section: Introductionmentioning

confidence: 80%

“…Methods that allow evaluation of samples with less preparation and provide quantitative results are more favorable for experimenting surface roughness. Atomic force microscopy (Ballal, Khandewal, Karthikeyan, Somayaji, & Foschi, ; Hu et al, ), SEM (Foschi, Nucci, Montebugnoli, Marchionni, Breschi, Malagnino, & Prati , ), confocal laser scanning microscopy (de Macedo, Colucci, Messias, Rached‐Júnior, Fernandes, Silva‐Sousa, & Raucci‐Neto , ; Oliveira, Raucci Neto, Faria, Fernandes, Miranda, & Abi Rached‐Junior, ), surface roughness testers (Ari, Erdemir, & Belli, ; Ballal, Mala, & Bhat, ; Eldeniz, Erdemir, & Belli, ), and digital imaging devices (Sabet & Lutfy, ) have been used in previous reports.…”

Section: Introductionmentioning

confidence: 99%

“…Methods that allow evaluation of samples with less preparation and provide quantitative results are more favorable for experimenting surface roughness. Atomic force microscopy (Ballal, Khandewal, Karthikeyan, Somayaji, & Foschi, 2015;Hu et al, 2010) (Ari, Erdemir, & Belli, 2004;Ballal, Mala, & Bhat, 2010;Eldeniz, Erdemir, & Belli, 2005), and digital imaging devices (Sabet & Lutfy, 2008) have been used in previous reports.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments

Manesh

Giacomin

Stoll

2017

Microscopy Res & Technique

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Obtaining clean and smooth root canal walls is the ideal clinical outcome of the cleaning and shaping stage in root canal treatment. This study compares the surface roughness of root canal surfaces instrumented with a NiTi filing system with either adaptive reciprocating (AR) or continuous rotation (CR). Root canal cleaning and shaping was carried out on the mesial canals of 24 extracted first molars roots with either AR or CR. Roots were split in half and the surface roughness of their canals was evaluated in 12 three dimensional roughness reconstructions using a scanning electron microscope. Rz (nm) values were calculated in three areas of each reconstruction and analyzed (α = 0.05). Mann-Whitney tests showed that surface roughness was significantly higher overall in the AR group (Rz = 967 ± 250 nm) compared with the CR group (Rz = 739 ± 239 nm; p = 0.044). The roughness values generally increased from apical towards the coronal third in both groups. A less aggressive finishing file or a continuous rotary system to end the cleaning and shaping stage may be beneficial to reduce roughness of the root canal surface.

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Section: Discussioncontrasting

confidence: 82%

Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

“…Methods that allow evaluation of samples with less preparation and provide quantitative results are more favorable for experimenting surface roughness. Atomic force microscopy (Ballal, Khandewal, Karthikeyan, Somayaji, & Foschi, 2015;Hu et al, 2010) (Ari, Erdemir, & Belli, 2004;Ballal, Mala, & Bhat, 2010;Eldeniz, Erdemir, & Belli, 2005), and digital imaging devices (Sabet & Lutfy, 2008) have been used in previous reports.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments

Manesh

Giacomin

Stoll

2017

Microscopy Res & Technique

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“…, in an SEM investigation on the surface profile of prepared root canal surfaces, described the presence of deep grooves and depressions in root dentin prepared with Mtwo and ProTaper rotary NiTi instruments. Sabet & Lutfy investigated the ultrastructural morphology of root canal walls prepared with different rotary NiTi instruments. They showed that preparation with different instruments results in differences in surface roughness.…”

Section: Preparationmentioning

confidence: 99%

Effects of mechanical instrumentation and chemical irrigation on the root canal dentin and surrounding tissues

Hülsmann¹

2013

Endodontic Topics

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Preparation and disinfection of the root canal aims to remove organic and inorganic tissue from within the root canal, reduce the number of microorganisms, neutralize endotoxins inside the dentin, and prepare the root canal for proper obturation. These aims can be achieved in many cases to a degree that promises a high chance of success through a combination of mechanical preparation and chemical disinfection—in other words, irrigation and medication. Preparation and disinfection both physically and chemically act on the lumen of the root canal itself, trying to remove as much infected material as possible, but also act on the surrounding dentin and all of its components including the dentinal tubules. The chemomechanical process attempts to remove the adhering biofilm as well as microorganisms and their by‐products. It is important to investigate the effect of various treatment options on root canal dentin, the periodontal ligament, and the surrounding alveolar bone. When mechanical processes and chemical agents are applied to a substrate such as dentin, this implies that the dentin will be altered or modified in structure, composition, and/or physical properties. This review aims to summarize the present knowledge on the effects of mechanical instrumentation and chemical irrigation on the root canal dentin and surrounding tissues.

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Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate

Gasic

Popović

Živković

et al. 2012

Microscopy Res & Technique

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To determine whether sodium hypochlorite (NaOCl) with 0.2% chlorhexidine gluconate (CHX) leads to colour change and precipitate formation, and to ultrastructurally analyse the dentine surface after simultaneous irrigation with 0.5% NaOCl and 0.2% CHX. Four tubes in which 5ml of different NaOCl concentrations and 5ml 0,2% CHX were placed, were observed every 15 minutes in the first two hours and after 7 days. Mixture solutions were centrifuged at 800 rpm/4 min. A precipitate is observed under light-microscopy. Thirty-five single-rooted teeth were instrumented using crown-down technique with irrigation: Positive control: distilled water, Negative control: 0,5% NaOCl+15% EDTA, Experimental group: identical to the negative control, then canals were treated with 0.5% NaOCl+0.2% CHX. The longitudinal root sections were observed under scanning-electron-microscopy. The amount of debris was assessed with 5/score-system, and the results were analysed using the Mann-Whitney U test (p < 0.001). Change in colour was noticed immediately after the merger and it did not change with time. Mixture solutions showed considerable turbidity, but precipitate was observed only after centrifugation. Statistical analysis showed a significant difference in the dentinal wall purity when comparing the cervical and middle root canal thirds between the experimental and negative control group. The difference was also observed between the cervical and middle thirds compared to the apical third of the root canal within these groups. Interaction between NaOCl and CHX, as well as the creation of precipitates, depends not only on the concentration of NaOCl, but also on the concentration of CHX.

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Ultrastructural morphologic evaluation of root canal walls prepared by two rotary nickel-titanium systems: a comparative study

Cited by 7 publications

References 23 publications

Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments

Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments

Effects of mechanical instrumentation and chemical irrigation on the root canal dentin and surrounding tissues

Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate

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