Clinical evaluation of the cleansing properties of the noninstrumental technique for cleaning root canals

Attin, Thomas; Buchalla, Wolfgang; Zirkel, Christoph; Lussi, Adrian

doi:10.1046/j.1365-2591.2002.00591.x

Cited by 31 publications

(19 citation statements)

References 10 publications

(27 reference statements)

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“…Irrigation alone is not always effective (29) and mechanical disinfection, related to removal of a layer of infected dentin, is required (30). Continuous irrigation and a homogenous cutting action of the SAF has been shown to lead to smear-layer free and clean canal surfaces (31).…”

Section: Discussionmentioning

confidence: 99%

Micro–computed Tomography Evaluation of the Preparation of Long Oval Root Canals in Mandibular Molars with the Self-adjusting File

Paqué

Peters

2011

Journal of Endodontics

161

155

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INTRODUCTION: The aim of this study was to assess the shaping potential of a novel nickeltitanium instrument, the self-adjusting file (SAF), in long oval root canals in distal roots in mandibular molars. METHODS: Twenty mandibular molars with long oval distal root canals were selected and scanned preoperatively and postoperatively by using micro-computed tomography at an original resolution of 20 m. Canals were shaped with the SAF, three-dimensionally reconstructed, and evaluated for volume, surface area, canal transportation, and prepared surface. Data were statistically contrasted by using paired t tests and regression analysis. RESULTS: Preoperatively, canal volume was 7.73 ± 2.13 mm(3), and canal area was 42.83 ± 8.14 mm(2). Volumes and surface areas increased significantly (P < .001) by 4.84 ± 1.73 mm(3) and 3.34 ± 1.73 mm(2), respectively, and no gross preparation errors were detected. Unprepared canal surface varied between individual canals, and mean unprepared surface was 23.5% ± 8.9%. Prepared areas were significantly larger compared with rotary canal preparation done in a previous study. Canal transportation scores were higher in the coronal root canal third (106 ± 50 m) compared with the apical third (81 ± 49 m). CONCLUSIONS: In vitro, preparation of long oval-shaped root canals in mandibular molars with the SAF was effective and safe. Moreover, shapes generated with the SAF were more complete compared with rotary canal preparation.

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Section: Discussionmentioning

confidence: 99%

Micro–computed Tomography Evaluation of the Preparation of Long Oval Root Canals in Mandibular Molars with the Self-adjusting File

Paqué

Peters

2011

Journal of Endodontics

161

155

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“…Irrigation alone is not always effective (27) and mechanical action of instruments on canal walls, including removal of infected dentin may be needed. In fact, a recent scanning electron microscopic study suggested that preparation with the SAF leaves very clean dentin walls, probably due to concurrent irrigation possible with this system (6).…”

Section: Discussionmentioning

confidence: 99%

Root Canal Preparation of Maxillary Molars With the Self-adjusting File: A Micro-computed Tomography Study

Peters¹,

Paqué²

2011

Journal of Endodontics

115

102

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INTRODUCTION: The aim of this study was to describe the canal shaping properties of a novel nickel-titanium instrument, the self-adjusting file (SAF), in maxillary molars. METHODS: Twenty maxillary molars were scanned by using micro-computed tomography at 20-m resolution. Canals were shaped with the SAF, which was operated with continuous irrigation in a handpiece that provided an in-and-out vibrating movement. Changes in canal volumes, surface areas, and cross-sectional geometry were compared with preoperative values. Canal transportation and the fraction of unprepared canal surface area were also determined. Data were normally distributed and compared by analyses of variance. RESULTS: Preoperatively, mean canal volumes were 2.88 ± 1.32, 1.50 ± 0.99, and 4.30 ± 1.89 m(3) [corrected] for mesiobuccal (MB), distobuccal (DB), and palatal (P) canals, respectively; these values were statistically similar to earlier studies with the same protocol. Volumes and surface areas increased significantly in MB, DB, and P canals; mean canal transportation scores in the apical and middle root canal thirds ranged between 31 and 89 m. Mean unprepared surfaces were 25.8% ± 12.4%, 22.1% ± 12.0%, and 25.2% ± 11.3% in MB, DB, and P canals, respectively (P > .05) when assessed at high resolution. CONCLUSIONS: By using SAF instruments in vitro, canals in maxillary molars were homogenously and circumferentially prepared with little canal transportation.

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“…There have been attempts to perform endodontic treatment without mechanical instrumentation by means of a vacuum device and hypochlorite perfusion of the root canal system (39). Canal cleanliness obtained with this method, however, is still unacceptable when used clinically (40), and further research is indicated to improve this interesting approach.…”

Section: Root Canal Instrumentationmentioning

confidence: 99%

Root Canal Irrigants

Zehnder

2006

Journal of Endodontics

1,552

1,508

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Clinical evaluation of the cleansing properties of the noninstrumental technique for cleaning root canals

Abstract: The results indicate that the noninstrumental technique for cleaning root canals needs further modifications for achieving acceptable results under clinical conditions.

Cited by 31 publications

References 10 publications

Micro–computed Tomography Evaluation of the Preparation of Long Oval Root Canals in Mandibular Molars with the Self-adjusting File

Micro–computed Tomography Evaluation of the Preparation of Long Oval Root Canals in Mandibular Molars with the Self-adjusting File

Root Canal Preparation of Maxillary Molars With the Self-adjusting File: A Micro-computed Tomography Study

Root Canal Irrigants

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