E-ISSN 2534-9821
 

Original Research 


Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone

Gholamreza Shirini, Seyed Behroz Jalali, Reza Amirzargar, Shokoufeh Raeisian.

Abstract
The proper design of the screw and plate placement relative to each other in order to prevent the driving the screw out of the bone, maintain the integrity of the screw-plate and create a more robust system in order to improve the plate function are important in the treatment of fractures or abnormalities surgery of mandibular bone using screw and plate. As regards, no study so far has been done about the change in the angle of monocortical screw placement relative to the miniplates in these surgeries; the aim of this study is the investigation of the effect of the angle of monocortical screw placement in the miniplate stability in created fractures of sheep mandibular bone. 30 hemi-mandibles were cut from the mandibular angle and two pieces of bone were again fixed to the same position with a mini plate and in each sample with one of three angle of monocortical screw (45, 60, and 90) relative to mini plates. Afterwards, mandibles were fixed in the universal testing machine that is used for tensile and shear tests. There were a significant difference between the mean tolerated tensile forces at the angle of 45 and 60 degree and at the angle of 45 and 90 degree. On the other hand, there was not a significant difference between the mean tolerated tensile forces at the angle of 60 and 90 degree. It seems that in cases where the surgeon faces with limited access during surgery or screw placement path interference with important anatomical elements, he can use a 60 degree screw angle

Key words: monocortical screw, stability miniplates, Mandible, tensile force


 
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How to Cite this Article
Pubmed Style

Shirini G, Jalali SB, Amirzargar R, Raeisian S. Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. Int J Med Rev Case Rep. 2019; 3(12): 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw


Web Style

Shirini G, Jalali SB, Amirzargar R, Raeisian S. Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. http://www.mdpub.net/?mno=60993 [Access: September 27, 2020]. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw


AMA (American Medical Association) Style

Shirini G, Jalali SB, Amirzargar R, Raeisian S. Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. Int J Med Rev Case Rep. 2019; 3(12): 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw



Vancouver/ICMJE Style

Shirini G, Jalali SB, Amirzargar R, Raeisian S. Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. Int J Med Rev Case Rep. (2019), [cited September 27, 2020]; 3(12): 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw



Harvard Style

Shirini, G., Jalali, . S. B., Amirzargar, . R. & Raeisian, . S. (2019) Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. Int J Med Rev Case Rep, 3 (12), 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw



Turabian Style

Shirini, Gholamreza, Seyed Behroz Jalali, Reza Amirzargar, and Shokoufeh Raeisian. 2019. Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. International Journal of Medical Reviews and Case Reports, 3 (12), 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw



Chicago Style

Shirini, Gholamreza, Seyed Behroz Jalali, Reza Amirzargar, and Shokoufeh Raeisian. "Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone." International Journal of Medical Reviews and Case Reports 3 (2019), 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw



MLA (The Modern Language Association) Style

Shirini, Gholamreza, Seyed Behroz Jalali, Reza Amirzargar, and Shokoufeh Raeisian. "Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone." International Journal of Medical Reviews and Case Reports 3.12 (2019), 837-841. Print. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw



APA (American Psychological Association) Style

Shirini, G., Jalali, . S. B., Amirzargar, . R. & Raeisian, . S. (2019) Investigation the effect of angle of monocortical screw placement on the stability miniplates in the fractures of the sheep mandibular bone. International Journal of Medical Reviews and Case Reports, 3 (12), 837-841. doi:10.5455/IJMRCR.Investigation-effect-of-angle-of-monocortical-screw