BACKGROUND The authors investigated the performance of nine commercially available high-speed air-turbine dental handpieces subjected to 1,000 simulated clinical uses and sterilizations. METHODS Six new handpieces from each of nine different models were subjected to simulated clinical use with a custom-made handpiece wear tester and then autoclaved. Ten parameters related to clinical performa...

  Background and purpose: Conventionally, rotary devices were used for bone surgery. Recently, new techniques have been proposed such as piezosurgery. The prevalence of impacted teeth which should be removed is high. There are different techniques for bone removal that are associated with specific complications. This study compared the postoperative complications of impacted third molar extrac...

The aim of this study was to compare intrapulpal temperature increase produced by high-speed handpiece, Er:YAG laser and CVDentus ultrasound tips during cavity preparation. Thirty bovine mandibular incisors with an enamel/dentin thickness of 4 mm at buccal surface had their roots amputated and were allocated to the following groups (n=10): Group I- high-speed handpiece; Group II- noncontact Er:...

the modern surgical endodontic treatment is a safe and predictable procedure with high success rate. however, several factors can retard or impede the proper healing process. use of a high speed handpiece during hard tissues management (osteotomy and apical resection) can potentially be one of these factors. formation of metallic debris from the surgical diamond burs, production of necrotic loc...

OBJECTIVE The aim of the Study was to compare the impacted third molar surgical technique by means of the high speed rotary handpiece with the piezoelectric one. MATERIALS AND METHODS 192 patients have been selected among those who had to undergo a third molar surgical extraction. These patients' surgeries have been performed by means of one of the techniques, randomly chosen. Each patient ha...

PURPOSE This study evaluated in vivo 2 different obturation techniques (lentulo spiral mounted in a slow-speed handpiece and hand-held) in primary teeth. METHODS The study was carried out on 24 children (mean age = 6.71 years) who had received 50 single-visit zinc oxide and eugenol (ZOE) pulpectomies in primary molars. The root canal filling materials were deposited into the canals either by ...

The aim of this study was evaluated, in vitro, the tensile bond strength to dentin Single Bond (3M) adhesive system applied over surfaces treated with hith-speed handpiece, Er.YAG laser or air abrasion. Thity four enclosed molars extracted due therapeutic indication had been used. teeth sectioned on mesial-distal sense. dental portions included a selfcured acrilic resin and so fourty five sampl...

The anti-suck-back ability of five new high-speed air turbine handpiece models was evaluated in this study. First, suck-back pressure with water displacement within a glass tube was measured. Next, under three different conditions, how many on-off times it takes before fluorescent stains became visible on a piece of gauze at the exhaust vent was counted and the presence of fluorescent stains on...