Purpose: The aim of this study was to compare levels of bacterial contamination of autogenous bone collected when using low-speed drilling, a back-action chisel, and a bone filter.
Materials And Methods: Bone tissue samples were taken from 31 patients who underwent surgical extraction of their third lower molars. Before surgical removal of the molar, bone particles were collected by a low-speed drill or a back-action chisel. Then, a stringent aspiration protocol was applied during the ostectomy to collect particulate bone by a bone filter. Processing of samples commenced immediately by incubation in an anaerobic or a CO2-rich atmosphere. The number of colony-forming units (CFUs) was determined at 48 hours of culture.
Results: No significant difference in the number of CFUs per milliliter was observed between the low-speed drilling group and the back-action chisel group in the anaerobic or CO2-rich condition (P = .34). However, significantly more micro-organisms were found in the bone filter group than in the low-speed drilling group or the back-action chisel group in the anaerobic and CO2-rich conditions (P < .001).
Conclusions: Particulate bone harvested with low-speed drilling or a back-action chisel is safer for use as an autograft than are bone particles collected with a bone filter. These results suggest that bone obtained from low-speed drilling is safe and straightforward to harvest and could be the method of choice for collecting particulate bone. Further research is needed to lower the bacterial contamination levels of autogenous bone particles used as graft material.
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http://dx.doi.org/10.1016/j.joms.2014.10.020 | DOI Listing |
J Endod
December 2024
Division of Conservative Dentistry and Endodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India.
Introduction: The dynamic navigation system (DNS) in endodontics presents a significant learning curve. This cross-sectional study aimed to assess the number of cases required to achieve consistent performance in DNS-assisted treatment of maxillary anterior teeth with pulp canal calcification.
Methods: A series of DNS procedures were performed on 45 calcified maxillary anterior teeth with pulp necrosis by a single endodontist who had no prior clinical DNS experience.
Evid Based Dent
September 2024
Professor, Department of Oral and Maxillofacial Surgery, College of Dentistry, Mosul University, Mosul, Iraq.
Study Design: A randomized, controlled, single-blind clinical trial.
Objective: To assess and compare patient-reported outcome measures (PROMs) between low-speed drilling without irrigation and high-speed drilling with irrigation for implant site preparation.
Patients And Methods: The study adhered to the Declaration of Helsinki principles, obtained approval from the local Ethics Committee, was registered on ClinicalTrials.
Heliyon
August 2024
Center for Advanced Studies and Technology-CAST, "G. D'Annunzio" University of Chieti-Pescara, Via Luigi Polacchi 11, 66100, Chieti, Italy.
This study aimed to evaluate various biomechanical parameters associated with the primary stability of Maestro and Due Cone implants placed in low-density artificial bones, prepared using high-speed drilling with irrigation and low-speed drilling without irrigation. The insertion torque (IT), removal torque (RT), and implant stability quotient (ISQ) values were recorded for Maestro and Due Cone implants placed in low-density polyurethane blocks (10 and 20 pounds per cubic foot (PCF) with and without a cortical layer) prepared using high-speed and low-speed with or without irrigation using a saline solution, respectively. A three-way ANOVA model and Tukey's post-hoc test were conducted, presenting data as means and standard deviations.
View Article and Find Full Text PDFDental Press J Orthod
July 2024
Federal University of Juiz de Fora, Department of Orthodontics (Juiz de Fora/MG, Brazil).
Introduction: The removal of residual resins is a routine procedure in orthodontic clinics and of great importance to the final result of the treatment.
Objective: To evaluate the main methods of residual resin removal used by orthodontists, and the main reasons for choosing these methods.
Methods: A questionnaire consisting of 21 questions: 6 relating to demographic data and the other 15 relating to two methods used to remove residual resins (drills or pliers) was sent by e-mail to orthodontists registered with the Regional Councils of Dentistry of São Paulo and Rio de Janeiro (Brazil) within April and June, 2023.
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