Paulsen K
Laryngol Rhinol Otol (Stuttg). 1975 Oct;54(10):835-40.
Examinations of the shape and size of chips produced during boring and grinding of dry macerated and fresh temporal bone by various drills and grinders at different revolutions show that rose trepans mainly scrape fresh bone, producing large rolled-up chips, but knock off dry macerated bone, producing more compact chips of bizarre shape. In either case the chip waste also contains plenty of fine and finest compact chips which are broken off and splinter during the removal or knocking-off of the chips from solid bone. The size of the chip depends on the size of the drill head. Diamond cutting heads produce fine and finest compact bone chips. Bone milling produces plenty of scrapes even from dry macerated temporal bone. The rate of revolutions (10,000-80,000 per min) had no influence on the shape and size of chips. Clinically the scraped chip seems to be the most favourable in the drilling of bone because it causes least damage. The use of a drill head with sharp-edged, intact cutting surfaces seems important for this, with continuous rinsing during the boring process to prevent soiling of the interspaces between the cutters and to ensure full performance in accordance with their construction.
对各种钻头和磨具在不同转速下对干燥浸软的新鲜颞骨进行钻孔和磨削时产生的碎屑的形状和大小进行检查后发现，玫瑰形环钻主要刮削新鲜骨，产生大的卷起的碎屑，但敲落干燥浸软的骨，产生形状怪异、更为紧实的碎屑。在任何一种情况下，碎屑废物中还包含大量细小和极细小的紧实碎屑，这些碎屑在从实心骨中取出或敲落碎屑的过程中被折断和碎裂。碎屑的大小取决于钻头头部的大小。金刚石切割头产生细小和极细小的紧实骨屑。即使是对干燥浸软的颞骨进行骨铣削，也会产生大量碎屑。转速（每分钟10,000 - 80,000转）对碎屑的形状和大小没有影响。临床上，刮削产生的碎屑在骨钻孔中似乎是最有利的，因为它造成的损伤最小。使用具有锋利边缘、完整切割面的钻头头部似乎对此很重要，在钻孔过程中持续冲洗以防止刀具之间的间隙被弄脏，并确保根据其结构发挥全部性能。
