Scanning electron microscopic study of the efficacy of various irrigating solutions

Baker, Neil A.; Eleazer, Paul D.; Averbach, Robert E.; Seltzer, Samuel

doi:10.1016/s0099-2399(75)80097-5

Cited by 293 publications

(151 citation statements)

References 9 publications

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“…In the fully prepared groups, however, the same energy density that achieved a moderately clean dentinal surface in the minimally prepared group produced a totally clean surface accompanied by morphological changes in the dentinal structures. Because NaOC1 is known to be an effective agent in the removal of organic tissue, one might conclude that it aided in the cleansing of the dentinal walls in this sample group of our study (12)(13)(14)(15). However, some studies have shown that NaOC1 appears to have no effect in removing smear layer when compared with samples not treated with NaOCI (3).…”

Section: Main Studymentioning

confidence: 70%

Effects of a 532 nm Q-switched nanosecond pulsed laser on dentin

Arrastia-Jitosho¹,

Liaw²,

Lee³

et al. 1998

Journal of Endodontics

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The purpose of this study was to determine whether a nanosecond-pulsed, frequency-doubled Nd:YAG laser emitting at 532 nm can be used as an altemaUve to mechanical methods of root canal treatment or as an adjunct to conventional endodontic preparation. Laser parameters whose thermal effects did not exceed safety thresholds for adjacent periodontal tissues were selected in a preliminary study. In 27 extracted human teeth, root canals were irradiated for 30 to 60 s at fluences of 2 to 2.2 J/cm2, and 10 Hz. Samples were observed using SEM. Laser irradiation could achieve smear layer removal after minimal manual preparation. However, results were inhomogeneous, and at higher energy densities thermal damage was observed, especially in the fully manually prepared samples. Nanosecond-pulsed irradiation at 532 nm can achieve complete smear layer removal. However, mechanisms must be developed to monitor laser effects and avoid potential damage to collateral structures.

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Section: Main Studymentioning

confidence: 70%

Effects of a 532 nm Q-switched nanosecond pulsed laser on dentin

Arrastia-Jitosho¹,

Liaw²,

Lee³

et al. 1998

Journal of Endodontics

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“…Efforts need to be concentrated on this, in order to achieve more efficient action by the auxiliary chemical substance to combat microorganisms and clean the root dentin. 14 It is clear that it is important to carry out new studies on dentin cleaning of root canal walls, with the aim of improving the cleaning of these walls. Given that in modern Endodontics resinous filling cements are used, that penetrate into the dentin tubules and thereby cause greater sealing of the root canal system, the more complete cleaning of canal walls becomes a decisive factor in endodontic success.…”

Section: 14mentioning

confidence: 99%

Ex vivo analysis of root canal cleaning using Endo-PTC associated to NaOCl and different irrigant solutions

Yamazaki

Moura-Netto

Salgado³

et al. 2010

Braz. oral res.

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The aim of this study was to assess qualitatively, by means of SEM images, the cleaning of the dentin walls of root canals after chemical-surgical preparation using Endo-PTC cream with 0.5% and 1% sodium hypochlorite and different final irrigating solutions. Seventy-two single-rooted human teeth were divided into eight groups and prepared using Endo-PTC cream with sodium hypochlorite (NaOCl) at different concentrations, and irrigated with NaOCl at different concentrations. Final irrigation was performed with either EDTA-T or EDTA-C. The best results were obtained with Group 1, followed by Groups 5, 2, 7, 8, 3, 6 and 4. We can conclude that the use of 0.5% NaOCl during instrumentation and final flush of the root canals was more efficient in cleaning than was 1% sodium hypochlorite. EDTA-T was more efficient in removing smear layer than EDTA-C, and the cervical third presented better cleaning of the root canal walls than did the middle third, which showed cleaner dentin walls than the apical third.

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“…Pulpal inflammation was thought to be due to toxins produced by bacteria that had penetrated and remained in the tubules. These bacteria can remain in the tubules even after mechanical clearing and irrigationof the root canals ( 19).…”

Section: Introductionmentioning

confidence: 99%

Scanning Electron Microscopic Examination of Root Canal Walls of Deciduous Molars with Necrotic Pulp

Meon

1995

ADUM

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The root canal walls of twenty -five deciduous molar teeth with exposed and necrotic pulps were examined using the scanning electron microscope. Immediately after extraction, all teeth were fixed in Kamosky's solution. The coronal portion of the tooth was sectioned at about 2mm above the enamel cemental junction.The mesial and distal roots were separat~d and either split in the mesio-distal or bucco-lingual direction. All specimens were prepared for SEM. Obsevations showed that all roots were infected with organisms consisting of cocci and short rods. Some of the cocci had penetrated the dentine layer. However, the distribution of organisms is. not uniform throughout the canals. Bacterial invasion is most in the coronal region and reduces towards the apical region: Accompanying bacterial invasion is root canal walls deterioration. The odontoblastic processes are the first to deteriorate followed by the predentine layer.

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Scanning electron microscopic study of the efficacy of various irrigating solutions

Cited by 293 publications

References 9 publications

Effects of a 532 nm Q-switched nanosecond pulsed laser on dentin

Effects of a 532 nm Q-switched nanosecond pulsed laser on dentin

Ex vivo analysis of root canal cleaning using Endo-PTC associated to NaOCl and different irrigant solutions

Scanning Electron Microscopic Examination of Root Canal Walls of Deciduous Molars with Necrotic Pulp

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