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KMID : 0602720140180030194
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Implantology
2014 Volume.18 No. 3 p.194 ~ p.202
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Comparative Study on Clearance between Drilling and Bushing of Various Implant Guide Systems
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Park Ji-Man
Heo Seong-Joo
Park Eun-Jin
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Abstract
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Purpose: The accuracy of an implant surgical guide system depends on the accumulation of errors from each fabrication step, and efforts to reduce the errors have been made using different strategies. The aim of this study was to examine the tolerance between drilling and bushing of various computer-guided templates and to understand the characteristics of each system.
Materials and Methods: This study investigated six guide systems, including foreign brands (Simplant, NobelGuide), and Korean brands (OsstemGuide, Navisis, NeoGuide, R2GATE). Photos were taken twice while the drill was held to the left and to the right. Two photos were merged together and the angle between two axes of each drill was measured.
Results: There was a difference in tolerance between bushing and drilling according to the system and drill shape. The angular deviation varied from a minimum of 0.94o to a maximum of 7.82o. When we compared the twists of the drills, the tolerance of NobelGuide and Simplant was significantly larger, while that of the R2GATE was significantly smaller than the others.
Conclusion: The tolerance between bushing and drilling was significantly different among the six guide systems examined. Accordingly, the operator should pay attention to the characteristics of each system while drilling.
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KEYWORD
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computer-guided template, implant drill, metal bushing, tolerance
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