PURPOSE Dental professionals suffer from a high prevalence of work-related musculoskeletal disorders (MSD). Dental hygienists in particular have a high prevalence of pain in the forearms and hands. The objective of this study was to compare 1 cordless handpiece to 2 corded handpieces during simulated tooth polishing in terms of the muscle loads (recorded as electromyography (EMG) activity), dur...

Piezoelectric surgery, known as Piezosurgery, is a relatively new technique which was initiated in oral surgery in the year 2000 with the classic publication of Dr. Tomaso Vercellotti’s article, and in orthognathic surgery only in 2004 and 2005. This technique is safe and useful for facial osteotomies and or osteoplasties with excellent results. Piezosurgery functioning principle is an ultrason...

P roper angulation of the airpolisher handpiece and use of high-velocity evacuation significantly minimize the generation and the liberation of the aerosol particles into the dental environment. 1S16 As can been seen in Figures 1 through 3. the handpiece nozzle should be held 3-4 mm from the tooth surface, The handpiece nozzle should be kept at a 60 0 angle toward the facial and lingual surface...

Background: To find out the operating time and to investigate post-operative sequelae following impacted mandibular third molar surgery after using reduction gear and conventional handpiece for the osteotomy. Materials and Methods: The study was conducted on 15 bilaterally symmetrical mandibular impacted third molars patients; one side of tooth was removed with reduction gear handpiece and anot...

OBJECTIVE To introduce and evaluate the safety of a novel dual-sided electrosurgery handpiece design for simultaneous tissue cutting and coagulation. METHODS We designed a prototype double-sided handpiece allowing automatic switching between two electrodes with a simple handpiece flip. The concept of the system as a surgical instrument was assessed by an animal experiment. RESULTS The skin ...

An autoclavable air turbine handpiece, Air Flushing Clean System (AFCS) (Osada Electric Co., Ltd., Tokyo, Japan) was developed for use in dentistry with the objective of reducing cross-contamination. Its potential for bacterial contamination was investigated in vitro using two bacterial strains (Streptococcus mutants ATCC 25175 and Staphylococcus aureus FDA 209 P). In theory, this device should...

The high-speed dental air-turbine handpieces are widely used in the dentistry as a tool for cutting and drilling a tooth. The advanced existing high-speed dental air-turbine handpieces were investigated to design the high performance dental air-turbine handpiece. The coupler and air-turbine of the dental air-turbine handpiece was designed using computational analysis. The computational domain o...