{"product_id":"black-cutting-hatchet-89-10-7-14","title":"Black Cutting Hatchet 8\/9 (10-7-14)","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlack’s Formula\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eA standard method used to describe the size, shape and angulation of cavity preparation instruments, created by Dr. Greene Vardiman Black (“the father of modern dentistry”).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHatchets, chisels and cavity prep instruments have 3 measurements:\u003cbr data-mce-fragment=\"1\"\u003e(x, y, z), based on a circular 100˚ (centigrade) scale, instead of the typical 360˚ (astronomical) scale.\u003cbr data-mce-fragment=\"1\"\u003ex= the width of the blade in tenths of millimeters.\u003cbr data-mce-fragment=\"1\"\u003ey= the length of the blade in whole millimeters.\u003cbr data-mce-fragment=\"1\"\u003ez = the angle the blade forms with the long axis of the handle.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eA fourth number, used on select angle formers and margin trimmers, is placed between the first two numbers ( x, a, y, z ). a= the degree of angle for the cutting edge to the long axis of the handle.\u003c\/p\u003e\n\u003cscript id=\"th-iframe-script\" src=\"chrome-extension:\/\/ofdopmlmgifpfkijadehmhjccbefaeec\/assets\/comms\/commsiframe.js\"\u003e\u003c\/script\u003e","brand":"Premier","offers":[{"title":"Default Title","offer_id":47451482128436,"sku":"PR-1003189","price":49.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/9776\/9012\/files\/63.jpg?v=1769495601","url":"https:\/\/onestopdental.ca\/products\/black-cutting-hatchet-89-10-7-14","provider":"One Stop Dental Supply","version":"1.0","type":"link"}