%0 Journal Article
%T Bevel Tip Deformation in New and Used Dental Needles
%A C¨¦sar Gait¨¢n- Fonseca
%A Denise Romo- Castillo
%A Bernardino Cerda- Cristerna
%A David Masuoka
%A Amaury Pozos- Guill¨¦n
%J Microscopy Research
%P 1-5
%@ 2329-3314
%D 2015
%I Scientific Research Publishing
%R 10.4236/mr.2015.31001
%X <div style=\"text-align:justify;\">
	<span style=\"line-height:1.5;\">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<img src=\"Edit_02e702c0-a59e-4365-8d8e-8665cc815685.bmp\" alt=\"\" />; Group 2, DLP<img src=\"Edit_70ee32ca-2aef-4b23-9068-7bb382488417.bmp\" alt=\"\" />; Group 3, Badiject, and Group 4, Zeyco. The new and used needles were evaluated by scanning electron microscopy to evaluate quantitatively the deformation on the bevel. Results: All groups showed a significantly statistical difference between new needles and needles used for one or two injections (P &lt; 0.05), except for those of Group 4, which exhibited no statistical difference. Conclusion: All dental needles used demonstrated tip deformation after their use, but in addition, dental needles without clinical use also showed deformation.</span> 
</div>
%K Bevel Tip
%K Deformation
%K Dentistry
%K Needles
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53217