Three‐Dimensional Defect Evaluation of Air Polishing on Extracted Human Roots

Sahrmann, Philipp; Ronay, Valerie; Schmidlin, Patrick R.; Attin, Thomas; Paqué, Frank

doi:10.1902/jop.2014.130629

Cited by 30 publications

(39 citation statements)

References 30 publications

(40 reference statements)

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“…In contrast, no significant substance loss could be measured by all other treatment modalities in the present study after 5x instrumentation. This is in accordance with data for glycine air-polishing showing low abrasivity for glycine [ 17 , 43 ] and for ultrasonication when applying an angulation of 0° and medium forces [ 27 ]. In contrast to these studies, dentin specimens were not statically instrumented but treated as in daily practice by dynamic movements.…”

Section: Discussionsupporting

confidence: 92%

A Biofilm Pocket Model to Evaluate Different Non-Surgical Periodontal Treatment Modalities in Terms of Biofilm Removal and Reformation, Surface Alterations and Attachment of Periodontal Ligament Fibroblasts

et al. 2015

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Background and AimThere is a lack of suitable in vitro models to evaluate various treatment modalities intending to remove subgingival bacterial biofilm. Consequently, the aims of this in vitro-study were: a) to establish a pocket model enabling mechanical removal of biofilm and b) to evaluate repeated non-surgical periodontal treatment with respect to biofilm removal and reformation, surface alterations, tooth hard-substance-loss, and attachment of periodontal ligament (PDL) fibroblasts.Material and MethodsStandardized human dentin specimens were colonized by multi-species biofilms for 3.5 days and subsequently placed into artificially created pockets. Non-surgical periodontal treatment was performed as follows: a) hand-instrumentation with curettes (CUR), b) ultrasonication (US), c) subgingival air-polishing using erythritol (EAP) and d) subgingival air-polishing using erythritol combined with chlorhexidine digluconate (EAP-CHX). The reduction and recolonization of bacterial counts, surface roughness (Ra and Rz), the caused tooth substance-loss (thickness) as well as the attachment of PDL fibroblasts were evaluated and statistically analyzed by means of ANOVA with Post-Hoc LSD.ResultsAfter 5 treatments, bacterial reduction in biofilms was highest when applying EAP-CHX (4 log10). The lowest reduction was found after CUR (2 log10). Additionally, substance-loss was the highest when using CUR (128±40 µm) in comparison with US (14±12 µm), EAP (6±7 µm) and EAP-CHX (11±10) µm). Surface was roughened when using CUR and US. Surfaces exposed to US and to EAP attracted the highest numbers of PDL fibroblasts.ConclusionThe established biofilm model simulating a periodontal pocket combined with interchangeable placements of test specimens with multi-species biofilms enables the evaluation of different non-surgical treatment modalities on biofilm removal and surface alterations. Compared to hand instrumentation the application of ultrasonication and of air-polishing with erythritol prevents from substance-loss and results in a smooth surface with nearly no residual biofilm that promotes the reattachment of PDL fibroblasts.

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Section: Discussionsupporting

confidence: 92%

A Biofilm Pocket Model to Evaluate Different Non-Surgical Periodontal Treatment Modalities in Terms of Biofilm Removal and Reformation, Surface Alterations and Attachment of Periodontal Ligament Fibroblasts

et al. 2015

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“…However, some powders can cause damage to tooth surfaces during polishing. In a previous study, air-powder polishing of dentin surfaces using sodium bicarbonate powder increased damage to the tooth substructure and decreased bonding performance of two-step and single-step self-etching adhesive systems 4) , leading to the development of a prophylactic polishing powder 15,16) . Glycine is a highly water-soluble amino acid with a lower Morse hardness index than sodium bicarbonate, and has very low toxicity, is nonallergenic, has a light sweet taste, and is used as a food flavor enhancer, indicating high suitability for intra-oral use.…”

Section: Discussionmentioning

confidence: 99%

Influence of air-powder polishing on bond strength and surface-free energy of universal adhesive systems

Tamura

Takamizawa

Shimamura

et al. 2017

Dental Materials Journal

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(AB, Bisco) were used in this study. Bovine dentin surfaces were air polished with glycine or sodium bicarbonate powders prior to the bonding procedure, and resin pastes were bonded to the dentin surface using universal adhesives. SBSs were determined after 24-h storage in distilled water at 37°C. Surface-free energy was then determined by measuring contact angles using three test liquids on dentin surfaces. Significantly lower SBSs were observed for dentin that was air-powder polished and surface-free energies were concomitantly lowered. This study indicated that air-powder polishing influences SBSs and surface-free energies. However, glycine powder produced smaller changes in these surface parameters than sodium bicarbonate.

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“…It is a colorless, sweet-tasting crystalline solid and is used in dentistry mainly in powder form for the cleaning of teeth and implants [9][10][11]. In pre-tests, we used commercially available powders to sandblast and thereby conditioning PEEK surfaces, given the hypothesis that this surface pre-treatment, like a silication, could allow for adequate bonding between PEEK and a given adhesive material.…”

Section: Discussionmentioning

confidence: 99%

Glycine: A potential coupling agent to bond to helium plasma treated PEEK?

2016

Self Cite

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OBJECTIVES To test the tensile bond strength (TBS) between two self-adhesive resin composite cements and PEEK after helium plasma treatment and used glycine as a potential coupling agent incorporated in different adhesives. METHODS In summary, 896 air-abraded PEEK specimens were fabricated. Half of the specimens were treated with cold active inert helium plasma and the other half were left non-treated. Both groups were then split in two groups: In group 1 (n=256), 64 specimens were pre-treated with: (a) soft-liner liquid, (b) visio.link, (c) Ambarino P60 and (d) no pre-treatment (control), respectively. In group 2 (n=192), specimens were conditioned accordingly, but the adhesive materials were modified by including a commercially available glycine (Air-Flow PERIO). PEEK specimens were then luted using either RelyX Unicem or Clearfil SA Cement and TBS was measured initially and after 14 days water storage combined with 10'000 thermal cycles (16 specimens/subgroup). Fracture type analysis was performed. For statistical analyses Kolmogorov-Smirnov, Shapiro-Wilk tests, 1-, 4-way ANOVA (post hoc: Scheffé), and t-test were used (p<0.001). RESULTS Helium plasma pre-treatment without glycine showed no impact on initial TBS (p>0.348). In contrast, a combination between glycine application and Softline/Ambarino P60 allowed for significantly higher initial TBS was measured after helium plasma treatment (p=0.001). However, this effect was no evident after thermo-cycling. All groups conditioned with visio.link showed the highest TBS values. SIGNIFICANCE The introduction of amine groups by simple provision of amino acids in the form of glycine can improve the bond strength after helium plasma treatment using different adhesive materials. However, using this simple approach, the method cannot withstand thermal challenge yet. AbstractObjectives: To test the tensile bond strength (TBS) between two self-adhesive resin composite cements and PEEK after helium plasma treatment and used glycine as a potential coupling agent incorporated in different adhesives.Methods: In summary, 896 air-abraded PEEK specimens were fabricated. Half of the specimens were treated with cold active inert helium plasma and the other half were left non-treated. Both groups were then split in two groups: In group 1 (n=256), 64 specimens were pre-treated with: a. Soft-Liner Liquid, b. visio.link, c. Ambarino P60 and d. no pretreatment (control), respectively. In group 2 (n=192), specimens were conditioned accordingly, but the adhesive materials were modified by including a commercially available glycine (Air-Flow PERIO). PEEK specimens were then luted using either RelyX Unicem or Clearfil SA Cement and TBS was measured initially and after 14 days water storage combined with 10'000 thermal cycles (16 specimens/subgroup). Fracture type analysis was performed. For statistical analyses Kolmogorov-Smirnov, Shapiro-Wilk tests, 1-, 4-way ANOVA (post-hoc: Scheffé), and t-test were used (p<0.001).Results: Helium plasma pre-treatment without glycine showed ...

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Three‐Dimensional Defect Evaluation of Air Polishing on Extracted Human Roots

Abstract: In patients with exposed root surfaces, cleaning with bicarbonate powder cannot be recommended. Less abrasive glycine powder, however, demonstrated non-critical substance loss.

Cited by 30 publications

References 30 publications

A Biofilm Pocket Model to Evaluate Different Non-Surgical Periodontal Treatment Modalities in Terms of Biofilm Removal and Reformation, Surface Alterations and Attachment of Periodontal Ligament Fibroblasts

A Biofilm Pocket Model to Evaluate Different Non-Surgical Periodontal Treatment Modalities in Terms of Biofilm Removal and Reformation, Surface Alterations and Attachment of Periodontal Ligament Fibroblasts

Influence of air-powder polishing on bond strength and surface-free energy of universal adhesive systems

Glycine: A potential coupling agent to bond to helium plasma treated PEEK?

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