ArticleClinical oral investigations2017
Influence of ultrasonic tip distance and orientation on biofilm removal.
Article in Clinical oral investigations, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 13 citations in OpenAlex.
- Effect of Air-Polishing on 3D Surface Integrity of Composite Dental Restorations-Comparison of Three Different Powders with Reduced Abrasiveness.Materials (Basel, Switzerland) · 2025Article
- In-vitro effects of novel periodontal scalers with a planar ultrasonic piezoelectric transducer on periodontal biofilm removal, dentine surface roughness, and periodontal ligament fibroblasts adhesion.Clinical oral investigations · 2024Article
- [Application and clinical efficacy of ultrasound debridement method in residual burn wounds].Zhonghua shao shang yu chuang mian xiu fu za zhi · 2022Article
- In vitro surface analysis of the brushing resistance of orthodontic sealants using two different profilometric evaluation methods.Scientific reports · 2022Article
- The effect of standoff distance and surface roughness on biofilm disruption using cavitation.PloS one · 2020Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe aim of this study is to assess the effects of ultrasonic tip distance and orientation on the removal of a multispecies biofilm under standardized conditions in vitro.
methodsSix-species biofilms were grown on hydroxyapatite discs for 64 h and treated with a magnetostrictive ultrasonic tip (Cavitron) placed either on contact or at 0.25- and 0.5-mm distance. The treatment was performed for 15 s with either the tip at right angle or sideways. Biofilm removal was evaluated by assessing the viable bacteria in each supernatant and compared to respective controls. In the latter, biofilms were mechanically removed and evaluated in supernatants to assess adhering and floating bacteria. Colony-forming units (CFU) were determined by cultivation on solid media. Any remaining biofilm on the treated discs was also visualized after staining with green-fluorescent SYTO® 9 stain using a confocal laser scanning microscope (CLSM). Mann-Whitney U tests and Bonferroni correction were used to analyze the results between the groups.
resultsSideways application of the ultrasonic tip at distances of 0.25 and 0.5 mm removed as many bacteria as present on the control discs compared to the tip on contact (p < 0.05). All other application modes, especially the ultrasonic tip applied perpendicularly on contact, showed no statistical significance in removing biofilm.
conclusionOverall, data indicated that bacterial detachment depended on tip orientation and distance, especially when the tip was applied sideways similar to the clinical setting. CLINICAL RELEVANCE: Biofilm removal by means of ultrasonic debridement remains a crucial aspect in the treatment of periodontal disease. To ensure sufficient biofilm removal, the tip does not necessarily require contact to the surface, but an application parallel to the surface on the side is recommended.
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