BACKGROUND AND OBJECTIVES Literature on preemptive analgesia is controversial. Reliability of results and difficult reproducibility of research contribute for non-elucidation of the subject. The aim of this study is to test the efficacy of oral ketoprofen (150 mg) preemptively administrated two days before third molar surgery, compared with postoperative administration in the same patient. ME...

tooth discoloration induced by endodontic sealers, is a common finding that impairs aesthetic outcome of endodontic treatment. the aim of the present mini literature review, was to summarize the existing data on discoloration potential of different endodontic sealers. the research covered the article published in pubmed and google scholar from 2000 to 2015. the searched keywords included ‘tooth...

Objective: evaluate the influence of single- or double-layer application a universal adhesive on bond strength to different tooth substrates. 
 Methods: To Seventy-two extracted sound human teeth were used for study. The divided into three groups according substrates; enamel, coronal and radicular dentin (n=24). roots separated from crowns then abraded obtain flat surfaces. specimens rando...

This paper presents a Hybrid Excited Double-Sided Linear Flux Switching Machine (HEDSLFSM) with crooked tooth modular stator. Generally, the conventional stators are made of full-length iron core, increasing manufacturing costs and losses. Higher losses result in lower efficiency overall performance. A U-shaped stator is used to consumption increase machine’s efficiency. Ferrite magnets replace...

Monitoring transmission systems is a huge scientific focus to prevent any anomaly and malfunctioning damaging the system. Several methods were used investigate gears behaviour mainly its state. And until last century, vibrations signals most performing technique in this field. However, nowadays, other alternatives are considered more accurate accessible such as controlling motor current study o...

abstract : the crown-root fracture is a common tooth injury which compromises the biological width and need proper endodontic and prosthodontic treatment to achieve acceptable clinical outcome. this case report describes clinical management of crown-root fracture in maxillary central incisors which was successfully treated by forceps eruption with 180˚ rotation to restore the biological width. ...

objective: the use of sugar-free chewing gums has been reported to be highly effective in the prevention of dental caries. this study carried out to compare the effect of mastic gum and a xylitol chewing gum on remineralization of caries-like lesions. materials and methods: in this cross-over, single blinded, in situ study, first, artificial caries-like lesions were created in six extracted hum...

An investigation on enhancement of heat transfer is carried out for a double pipe exchanger in which the outer wall inner provided with circumferential labyrinth passages. Rectangular and triangular cavities fixed tooth thickness, height, pitch are considered effect added structures characteristics discussed. A two-dimensional steady numerical simulation using ANSYS-FLUENT software. The flow Re...

awareness of hyperdontia pattern/prevalence can be useful in early diagnosis and prevention by general practitioners, pediatric dentists, and orthodontists. since the previous results regarding the pattern of hyperdontia (supernumerary teeth) are controversial, this study aimed to assess this subject among iranian orthodontic patients.all approved panoramic radiographs of 3374 orthodontic patie...

Background: Neutron contamination is produced in electron beams of linac when tooth or dental materials are located in the path of beam. Objective: This study aims to determine the neutron dose contamination from different dental restoration materials in electron mode of a linac. Material and Methods: In this experimental study, the neutron dose contamination was calculated in the p...