Evaluation of ultrasonic and sonic instruments for intraradicular post removal

Buoncristiani, John; Seto, Bradley G.; Caputo, Angelo A.

doi:10.1016/s0099-2399(06)80044-0

Cited by 54 publications

(70 citation statements)

References 12 publications

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“…These cements are less brittle and may not have a tendency to microfractures as zinc phosphate and glass ionomer cements. This would explain the resistance to ultrasonic displacement (4,8,9).…”

Section: Discussionmentioning

confidence: 96%

“…The Enac apparatus uses a piezoeletric mechanism, which vibrates at 30,000 Hz, while the Cavi-Endo uses a magnetostrictive device which vibrates at 25,000 Hz. The Neosonic piezoeletric ultrasound (Amadent, Cherry Hill, NJ), in spite of having a 35,000 Hz frequency, is not as rapid in post removal (4). According to the author, it is possible that the frequency or amplitude of the vibrations may be a key factor in post removal.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of intracanal post removal using ultrasound

et al. 2004

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The aim of this study was to determine the effect of ultrasonic vibration on the force necessary to remove pre-fabricated and anatomic and cast posts. Two hundred and forty teeth were divided into two groups. In group I, a 0.8-mm metallic pre-fabricated post, UnimetricMaillefer, was utilized; in group II, cast copper-aluminum alloy posts measuring 0.8, 1.0 and 1.2 mm in diameter were used. The root canals were prepared in three different diameters: 0.8, 1.0 and 1.2 mm, with a length of 10 mm. The posts were cemented with glass monomer cement resulting in 20 specimens for each subgroup. Half of the sample was submitted to ultrasonic vibration for 3 min, while the other half did not receive any vibration. The specimens were submitted to traction in a universal testing machine. The results were analyzed by non-parametric Mann-Whitney U, Wilcoxon and Kruskal-Wallis tests. The application of ultrasonic vibration significantly reduced the retention provided by the glass ionomer cement in the fixation of intracanal posts. The ultrasonic action was effective in both pre-fabricated and anatomic and cast posts. The effectiveness of the ultrasonic vibration was not related to the cementation line or the diameter of the post.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Evaluation of intracanal post removal using ultrasound

et al. 2004

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“…10,14 Other investigators also indicated its use for the removal of crowns. 12,15 However, the findings of these studies are contradictory, and this discrepancy might be explained by factors such as conicity of the preparation, time of instrumentation, type of cementing agent and thermal cycling.…”

Section: Discussionmentioning

confidence: 99%

Effect of ultrasonic instrumentation on the bond strength of crowns cemented with zinc phosphate cement to natural teeth. An in vitro study

Filho¹,

Mori

Jardini³

et al. 2008

Braz. oral res.

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Several studies have reported the benefits of sonic and/or ultrasonic instrumentation for root debridement, with most of them focusing on changes in periodontal clinical parameters. The present study investigated possible alterations in the tensile bond strength of crowns cemented with zinc phosphate cement to natural teeth after ultrasonic instrumentation. Forty recently extracted intact human third molars were selected, cleaned and stored in physiologic serum at 4°C. They received standard preparations, at a 16º convergence angle, and AgPd alloy crowns. The crowns were cemented with zinc phosphate cement and then divided into four groups of 10 teeth each. Each group was then subdivided into two subgroups, with one of the subgroups being submitted to 5,000 thermal cycles ranging from 55 ± 2 to 5 ± 2°C, while the other was not. Each group was submitted to ultrasonic instrumentation for different periods of time: group 1 -0 min (control), group 2 -5 min, group 3 -10 min, and group 4 -15 min. Tensile bond strength tests were performed with an Instron testing machine (model 4310). Statistical analysis was performed using ANOVA and Tukey's test at the 5% level of significance. A significant reduction in the tensile bond strength of crowns cemented with zinc phosphate and submitted to thermal cycles was observed at 15 min (196.75 N versus 0 min = 452.01 N, 5 min = 444.23 N and 10 min = 470.85 N). Thermal cycling and ultrasonic instrumentation for 15 min caused a significant reduction in tensile bond strength (p < .05).

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“…There are many techniques and devices to facilitate and promote a safer traction of the intraradicular post removal, such as rotary instruments, special forceps, hemostatic tweezers, special devices (Masserann Kit, Eggler post remover, the Ganon post remover, the Ruddle post removal), ultrasonic vibration or a combination of these. 1,[7][8][9][10][11][12] The instrumentation technique and irrigation solutions interfere in the post retention. 13 Moreover, the type of cement influence the intraradicular retention, since the cement promote higher adhesion to the root walls and keep the post fixed.…”

Section: 5005/jp-journals-10024-1703mentioning

confidence: 99%

Ultrasound Effect in the Removal of Intraradicular Posts Cemented with Different Materials

Berbert¹,

Espir

Crisci

et al. 2015

The Journal of Contemporary Dental Practice

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Aim: This study evaluated the effect of ultrasonic vibration on the tensile strength required to remove intraradicular post cemented with different materials. Materials and methods:Bovine teeth were selected, and 7 mm of the cervical root canals were prepared to size 5 Largo drill, the posts were cemented with zinc phosphate, Enforce (resin) or Rely X (glass ionomer). The specimens were divided into six groups (n = 10), according to the following procedures: GI-cementation with zinc phosphate associated with traction force; GII-cementation with zinc phosphate associated with ultrasonic activation and traction force; GIII-cementation with Enforce associated with traction force; GIV-cementation with Enforce associated with ultrasonic activation and traction force; GV-cementation with Rely X associated with traction force; and GVI-cementation with Rely X associated with ultrasonic activation and traction force. The tensile test was conducted using the electromechanical testing machine, the force was determined by a specialized computer program and ultrasonic activation using the Jet Sonic Four Plus (Gnatus) device in 10P.Results: Concerning to average ranking, GI showed statistically significant difference in comparison with GII and GVI (p < 0.05); there was no statistical difference in GIII and GIV when compared to other groups (p > 0.05). Ultrasound Effect in the Clinical significance:The post removal is a routine practice in the dental office, therefore, new solutions and better alternatives are need to the practitioner. We did not find in the literature many articles referring to this practice. Thus, the results from this study are relevant in the case planning and to promote more treatment options.

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Evaluation of ultrasonic and sonic instruments for intraradicular post removal

Cited by 54 publications

References 12 publications

Evaluation of intracanal post removal using ultrasound

Evaluation of intracanal post removal using ultrasound

Effect of ultrasonic instrumentation on the bond strength of crowns cemented with zinc phosphate cement to natural teeth. An in vitro study

Ultrasound Effect in the Removal of Intraradicular Posts Cemented with Different Materials

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