Effect of three nickel-titanium rotary file techniques on infected root dentin reduction
| Autor: | Fabienne Perez, C. Badet, Jean-François Peli, Marie-Pierre Chuste-Guillot |
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| Rok vydání: | 2005 |
| Předmět: |
Dental Instruments
Materials science Sodium Hypochlorite Root canal Dentistry Optical density Root dentin chemistry.chemical_compound Nickel Streptococcal Infections Dentin medicine Humans General Dentistry Dental Pulp Cavity Titanium Analysis of Variance Root Canal Irrigants business.industry Equipment Design Stainless Steel Dental instruments medicine.anatomical_structure Otorhinolaryngology chemistry Nickel titanium Sodium hypochlorite Surgery Oral Surgery Streptococcus sanguis business Root Canal Preparation Dental Alloys |
| Zdroj: | Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. 102(2) |
| ISSN: | 1528-395X |
| Popis: | This study compared the bacterial reduction of in vitro infected root canals after instrumentation by 3 nickel-titanium (NiTi) rotary files with different taper and diameter versus manual stainless steel files.Sixty-four single-rooted human teeth were infected with a suspension of Streptococcus sanguis measured by optical density. Teeth were divided randomly into 4 groups of 16 and prepared with Flexofiles, GT rotary files, HERO 642, and ProFile. Bacterial samplings were performed before (S1), during (S2-S3), and after (S4) instrumentation.All techniques significantly reduced the number of bacterial cells in the root canals (P.05). There was no significant difference between NiTi and manual instrumentation at S2, S3, or S4. Concerning bacterial reduction, the results suggest that a manual stainless steel file preparation is as efficient as a NiTi rotary instrumentation.Regardless of the root canal preparation technique, its taper, and diameter, the root dentin remained infected and was not bacteria-free at the end of the experiment. |
| Databáze: | OpenAIRE |
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