Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53217#.VLcsZMnQrzE Author(s) César Gaitán- Fonseca 1 , Denise Romo- Castillo 1 , Bernardino Cerda- Cristerna 2 , David Masuoka 1* , Amaury Pozos- Guillén 2 Affiliation(s) 1 Stomatology Department, Aguascalientes University, Aguascalientes City, Mexico . 2 Basic Sciences Laboratory, Faculty of Dentistry, San Luis Potosi University, San Luis Potosi, Mexico . ABSTRACT Objectives: To evaluate quantitatively deformation of the angle of the horizontal plane of the bevel tip in new dental needles and in dental needles used in clinical procedures. Material and Methods: A cross-sectional study was performed with 360 dental needles from four different manufacturers. The needles were divided into four groups (90 per group): Group 1, Monoject ; Group 2, DLP ; Group 3, Badiject, and Group 4, Zeyco. The new and used needles were evaluated by scanning elect...
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