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US5569035A Enhanced cutting drill tip for endosseous implants 失效
用于内骨植入物的增强切割钻头

Enhanced cutting drill tip for endosseous implants
摘要:
A tri-spade dental drill with an enhanced cutting tip for preparing surgical sites for endosseous implants is described. The cutting tip incorporates a split point cutting surface for each of the three blades wherein the split point includes a positive rake angle. All three split points converge at the center of the drill, eliminating any chisel edges. The positive rake angle split point and its offset secondary cutting flutes breaks the removed bone into smaller chips, decreasing the principle cutting force necessary for drilling and facilitating material ejection.
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