JCO/AUGUST 2004 T of a palatally impacted maxillary permanent canine often involves surgical exposure of the tooth, followed by orthodontic repositioning.1-10 After the elevation of a palatal flap, the overlying bone is usually removed with electric or manual instruments. This article presents an alternative method that uses piezoelectricity to minimize trauma to the impacted tooth and the surr...

Extraction of third molars is the most common surgical procedure performed in oral surgery on a daily basis and, despite surgical skills and expertise, complications may occur. Complications observed during or after third molar removal may include pain, swelling, bleeding, infection, sinus perforation and nerve damage. Fortunately, with a proper management and a good surgical technique, the inc...

waterwheels are the oldest types of hydraulic machines. these turbines are of relatively simple design, large diameter, low rotational speed and high torques. but applying them as micro hydros of high speed and small diameter is yet to be explored. a micro hydro waterwheel of one meter diameter was designed and manufactured at the iranian  esearc†h organization for science and technology (irost...

Background and Aim: Considering the importance of detection of secondary caries, the adverse consequences of false positive and false negative diagnoses and the gap of information in the diagnostic efficacy of digital sensors in detection of secondary caries, this in vitro study sought to compare the diagnostic efficacy of two different resolutions of radiographs obtained by photostimulable pho...

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 ...