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|Title:||In vitro adhesion of streptococcus sanguinis to dentine root surface after treatment with Er:yag laser, ultrasonic system, or manual curette|
De Freitas, P.M.
|Abstract:||The purpose of this in vitro study was to evaluate the dentine root surface roughness and the adherence of Streptococcus sanguinis (ATCC 10556) after treatment with an ultrasonic system, Er:YAG laser, or manual curette. Background Data: Bacterial adhesion and formation of dental biofilm after scaling and root planing may be a challenge to the long-term stability of periodontal therapy. Materials and Methods: Forty flattened bovine roots were randomly assigned to one of the following groups: ultrasonic system (n?=?10); Er:YAG laser (n?=?10); manual curette (n?=?10); or control untreated roots (n?=?10). The mean surface roughness (Ra, μm) of the specimens before and after exposure to each treatment was determined using a surface profilometer. In addition, S. sanguinis was grown on the treated and untreated specimens and the amounts of retained bacteria on the surfaces were measured by culture method. Results: All treatments increased the Ra; however, the roughest surface was produced by the curettes. In addition, the specimens treated with curettes showed the highest S. sanguinis adhesion. There was a significant positive correlation between roughness values and bacterial cells counts. Conclusion: S. sanguinis adhesion was the highest on the curette-treated dentine root surfaces, which also presented the greatest surface roughness.|
|Editor:||Mary Ann Liebert, Inc. Publishers|
|Appears in Collections:||FOP - Artigos e Outros Documentos|
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