A comparative in vitro study of a magnetostrictive and a piezoelectric ultrasonic scaling instrument

Busslinger, A.; Lampe, Kathrin; Beuchat, M.; Lehmann, B.

doi:10.1034/j.1600-051x.2001.028007642.x

Cited by 88 publications

(107 citation statements)

References 19 publications

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“…In this investigation, a load of 200 g was applied. This corresponds to previous work, in which loads in the range of 50 up to 200 g were applied [14,28,29].…”

Section: Discussionsupporting

confidence: 84%

“…A specially designed computer programme was used (PPK, Zurich, Switzerland), which is applied in our laboratory to express the cleaning effect (Re) of toothpaste or toothbrushes. The methodology is described in previous papers [14,15]. The only small modification to the programme as applied to this study was that the computer had to recognise the light tooth surface as clean.…”

Section: Calculus Removalmentioning

confidence: 99%

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Potential of shock waves to remove calculus and biofilm

et al. 2010

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Effective calculus and biofilm removal is essential to treat periodontitis. Sonic and ultrasonic technologies are used in several scaler applications. This was the first feasibility study to assess the potential of a shock wave device to remove calculus and biofilms and to kill bacteria. Ten extracted teeth with visible subgingival calculus were treated with either shock waves for 1 min at an energy output of 0.4 mJ/mm(2) at 3 Hz or a magnetostrictive ultrasonic scaler at medium power setting for 1 min, which served as a control. Calculus was determined before and after treatment planimetrically using a custom-made software using a grey scale threshold. In a second experiment, multispecies biofilms were formed on saliva-preconditioned bovine enamel discs during 64.5 h. They were subsequently treated with shock waves or the ultrasonic scaler (N = 6/group) using identical settings. Biofilm detachment and bactericidal effects were then assessed. Limited efficiency of the shock wave therapy in terms of calculus removal was observed: only 5% of the calculus was removed as compared to 100% when ultrasound was used (P

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“…In this investigation, a load of 200 g was applied. This corresponds to previous work, in which loads in the range of 50 up to 200 g were applied [14,28,29].…”

Section: Discussionsupporting

confidence: 84%

Section: Calculus Removalmentioning

confidence: 99%

Potential of shock waves to remove calculus and biofilm

et al. 2010

View full text Add to dashboard Cite

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“…[10][11][12][13][14][15] All of these studies examined the influence of different variables including the power setting, the amount of load applied, and the angle that the scaling tip makes with the tooth surface. However, variability of the tips has not been fully assessed (in the majority of studies, the same ultrasonic scaling insert was used throughout the investigation).…”

Section: Discussionmentioning

confidence: 99%

“…5 Research on the effects of scaling on the root surface in vitro following three treatment modalities (a hand curet, a conventional piezoelectric scaler, and a thin magnetostrictive scaler) showed that the thin ultrasonic tips produced the smoothest root surface, although the piezoelectric scaler was found to be the quickest in removing deposits from the root surface. 6 Previous research also measured the oscillation of the tip in air using light microscopy and assessed how this variable might affect the efficiency of the ultrasonic scaler tips; 7 however, this technique is prone to error, and it is not possible to measure accurately the oscillation of the scalers under loading. Scanning laser vibrometry (SLV) is an experimental method that allows non-invasive (i.e., without contact) measurement of the movement of ultrasonic scaling tips vibrating in air and during contact with solid surfaces.…”

mentioning

confidence: 99%

Effect of Loading on the Vibration Characteristics of Thin Magnetostrictive Ultrasonic Scaler Inserts

Trenter

Landini

Walmsley

2003

Journal of Periodontology

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Thin ultrasonic scaler tips are susceptible to loading. This results in a reduction in the displacement amplitude that shows variation not only between tips of different design but also between those of the same design made by the same manufacturer. Clinicians and researchers should be aware of this variability, which may influence both clinical procedures and future research with thin ultrasonic scaling tips.

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“…Through the random allocation of the roots the five treatment groups were well matched. The digital contrast program to identify calculus on the root surfaces has several advantages [27]. However, it fails to identify plaque, because it is carried out without preliminary staining of all deposited material.…”

Section: Discussionmentioning

confidence: 99%

Cleaning ability and induced dentin loss of a magnetostrictive ultrasonic instrument at different power settings

et al. 2010

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Some laboratory studies have evaluated the oscillation mode of ultrasonic scalers. None of them recorded its influence on calculus removal and quantified dental hard tissue loss. This study aimed to compare the performance of a magnetostrictive ultrasonic instrument at different power settings in vitro in relation to the tip oscillation activity. The oscillation activity of the straight Slimline® insert in the Cavitron® ultrasonic scaling device was analyzed at five different power settings with the help of two laser vibrometers. The performance of this instrument was tested on 60 roots of human single-rooted teeth. Twelve roots each were randomly assigned to be instrumented at a given power setting. Every root was instrumented for 120 s at a standardized instrumentation force of 0.1 ± 0.05 N. In addition, another 30 periodontally involved roots with subgingival calculus were instrumented accordingly to assess the calculus removal potential. The surface characteristics after instrumentation were analyzed under scanning electron microscope. The instrumentation at minimum power setting resulted in an mean increase of the root surface roughness of 0.18 ± 0.28 compared to 0.51 ± 0.48 at maximum power setting (P = 0.0327). The loss of dental hard tissue amounted to 11.37 ± 3.64 at minimum compared to 23.37 ± 15.76 at maximum power (P = 0.0010). The higher the power setting, the more calculus was removed. The values of the latter ranged between 4.04 ± 1.87 and 11.26 ± 4.66 mm² of cleaned dentin surface area (P = 0.0065). At lower power settings, a more favorable relation between cleaning ability, loss of dentine, and surface roughness was found. cleaned dentin surface area (P=0.0065). At lower power settings, a more favourable relation between cleaning ability, loss of dentine and surface roughness was found.

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A comparative in vitro study of a magnetostrictive and a piezoelectric ultrasonic scaling instrument

Abstract: The piezoelectric ultrasonic scaler was more efficient than the magnetostrictive ultrasonic scaler in removing calculus but left the instrumented tooth surface rougher.

Cited by 88 publications

References 19 publications

Potential of shock waves to remove calculus and biofilm

Potential of shock waves to remove calculus and biofilm

Effect of Loading on the Vibration Characteristics of Thin Magnetostrictive Ultrasonic Scaler Inserts

Cleaning ability and induced dentin loss of a magnetostrictive ultrasonic instrument at different power settings

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