Temperature Changes During Ultrasonic Irrigation with Different Inserts and Modes of Activation

Zeltner, Marco; Peters, Ove A.; Paqué, Frank

doi:10.1016/j.joen.2009.01.007

Cited by 42 publications

(42 citation statements)

References 27 publications

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“…A pilot trial (n = 3 instruments per group) was performed with the plastic base placed in the empty water container, rotating the instruments until fracture in ambient air. Then, to be able to define temperatures, a glass container was filled with 200 mL deionized water at 20 C or 37 C. Deionized water was acquired from a Milli Q Integral unit (Millipore, Billerica, MA), and the original temperature of the water was 25.5 C. To achieve the desired temperatures, the glass container was either immersed in ice until the water temperature was stabilized at 20 C or placed on a hot plate until the water temperature was stabilized at 37 C; during all tests, the temperature was measured with an infrared thermometer. The plastic base with pins, the instrument, and 2 connected clips was positioned inside the glass container and fixed with a clamp, and sufficient time after immersion of the base was allowed to equilibrate temperatures.…”

Section: Cyclic Fatigue Analysismentioning

confidence: 99%

“…Upon heating, the martensite to R-phase transformation around 20 C precedes the R-phase to austenite transformation, which takes place around 30 C (Fig. 2D).…”

Section: Dscmentioning

confidence: 99%

“…Therefore, the aim of this study was to test fatigue limits of current, thermally treated, NiTi rotary instruments during immersion in water at body temperature. bath both at room temperature (20 C AE 1 C) and at body temperature (37 C AE 1 C). A subset of instruments was also tested in air, without immersion in water (Table 1).…”

mentioning

confidence: 99%

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Evidence for Reduced Fatigue Resistance of Contemporary Rotary Instruments Exposed to Body Temperature

Vasconcelos

Murphy

Carvalho³

et al. 2016

Journal of Endodontics

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166

149

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Section: Cyclic Fatigue Analysismentioning

confidence: 99%

“…Upon heating, the martensite to R-phase transformation around 20 C precedes the R-phase to austenite transformation, which takes place around 30 C (Fig. 2D).…”

Section: Dscmentioning

confidence: 99%

See 1 more Smart Citation

Evidence for Reduced Fatigue Resistance of Contemporary Rotary Instruments Exposed to Body Temperature

Vasconcelos

Murphy

Carvalho³

et al. 2016

Journal of Endodontics

Self Cite

166

149

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show abstract

“…This system allowed the temperature increases inside and outside the canal to be recorded easily, when irrigant at a temperature of 25˚C was used. In contrast, Cameron [35] and Marco [36] placed the teeth in a water bath at 37˚C to provide a stable temperature for the thermocouples, but used irrigant at 25˚C. As a conesquence, the temperature of the teeth was affected by the temperature of the irrigation solution and the magnitude of the increase in temperature due to laser treatment could not be measured directly.…”

Section: Discussionmentioning

confidence: 99%

Measurement of temperature changes during cavitation generated by an erbium, chromium: Yttrium, scandium, gallium garnet laser

Peeters¹,

Mooduto²

2012

OJST

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Aim: The present study evaluated the magnitude of temperature changes in the tooth during cavitation produced by an Er,Cr:YSGG laser. Methods: The root canal of a single extracted maxillary canine was enlarged to a size 30/.02 file. Four thermocouples were attached to the tooth: one to the surface of the root and three inserted into the canal at 3, 9, and 15 mm from the apical foramen, respectively. The tooth was placed in a plastic container at room temperature around 25˚C. The tooth was processed as follows. In the EDTA condition, the tooth was irrigated with 17% EDTA; in the NaOCl condition, the tooth was irrigated with 3% NaOCl; and to analyse the effect of different thicknesses of dentin, the tooth was irrigated with tap water. In all conditions, the irrigants were activated at 2 W for 120 seconds. Results: The mean temperature was 25.2˚C to 27.1˚C and the temperature ranged from 25.0˚C to 29.6˚C. The temperature elevation measured during cavitation generated by the laser didnot exceed 5˚C. Conclusions: The magnitude of the temperature changes in the root canal and at the surface of the tooth did not exceed 5˚C when laser-driven irrigation was used to produce cavitation in the root canal.

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“…5 The use of ultrasound has been suggested to improve root canal irrigation. Passive ultrasonic irrigation (PUI) is the activation of an irrigant inside the root canal by means of an accessory, smooth tip, producing a sound flow and/or cavitation of any irrigating or chelating agent, thereby enhancing the cleaning effect.…”

mentioning

confidence: 99%

Influence of the type of instrument used in passive ultrasonic irrigation on the smear layer removal capacity

Filpo-Perez¹,

Amoroso-Silva²,

Guimarães³

et al. 2015

Dental Press Endod

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Introduction: The aim of this study was to evaluate the smear layer removal ability of stainless steel and NiTi hand files as well as an orthodontic rectangular NiTi wire activated by an ultrasonic device. Methods: 50 palatal root canals of maxillary molars were preflared with a #35 LA Axxess bur at the cervical third and with ProTaper instrument, up to F4 instrument, within working length, at the apical third. The canals were irrigated with 1% sodium hypochlorite and divided into five groups for passive ultrasonic activation (PUI): GI = EDTA + 1 minute (PUI) with a stainless steel#15 K-file; GII = EDTA + 1 minute (PUI) with a NiTi #15 K-file; GIII = EDTA + 1 minute (PUI) with orthodontic NiTi 25 x 11 wire; GIV = EDTA for 3 minutes without PUI; GV = No EDTA and no PUI. Subsequently, each root was sectioned longitudinally and a hemisection was covered with a layer of metal and analyzed by a scanning electron microscope. Images of the three thirds were taken, stipulating scores as follows: 0 = no layer of dentin debris, clean and open dentinal tubules; 1 = moderate dentin debris layer; 2 = thick layer of dentin debris covering the surface of the dentinal tubules. The data for each score were compared statistically. Results: Smear layer was observed in all three thirds. All groups using EDTA differed statistically (p < 0.05) from the group without EDTA. There were no significant differences between the groups activated with ultrasound and the EDTA group without ultrasound. There were no significant differences (p < 0.05) among the three instruments employed. Conclusion: The use of EDTA favored smear layer removal. Activation of EDTA for one minute, regardless of the instrument used, favored cleaner dentin walls.Keywords: Smear layer. Root canal irrigants. Ultrasound. How to cite this article: Filpo-Perez CA, Amoroso-Silva PA, Guimarães BM, Bernardineli N, Bramante CM, Morais CAH, Duarte MAH. Inluence of the type of instrument used in passive ultrasonic irrigation on the smear layer removal capacity.

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Temperature Changes During Ultrasonic Irrigation with Different Inserts and Modes of Activation

Cited by 42 publications

References 27 publications

Evidence for Reduced Fatigue Resistance of Contemporary Rotary Instruments Exposed to Body Temperature

Evidence for Reduced Fatigue Resistance of Contemporary Rotary Instruments Exposed to Body Temperature

Measurement of temperature changes during cavitation generated by an erbium, chromium: Yttrium, scandium, gallium garnet laser

Influence of the type of instrument used in passive ultrasonic irrigation on the smear layer removal capacity

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