1.0Glossaryhttps://www.healthbenefitstimes.com/glossaryGlossaryhttps://www.healthbenefitstimes.com/glossary/author/adminglossary/rich600338<blockquote class="wp-embedded-content" data-secret="G26hfQIATu"><a href="https://www.healthbenefitstimes.com/glossary/trephine/">Trephine</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.healthbenefitstimes.com/glossary/trephine/embed/#?secret=G26hfQIATu" width="600" height="338" title="“Trephine” — Glossary" data-secret="G26hfQIATu" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.healthbenefitstimes.com/glossary/wp-includes/js/wp-embed.min.js </script> Surgical act of creating a circular opening.Hollow rotary circular instrument that removes a disk or cylinder of bone or tissue; it can be used to create a trough around an endodontic post to assist in its removal from a natural tooth or to remove a dental implant from bone.A small crown saw used in surgery, of the skull.A surgical instrument for making a round hole in the skull or for removing a round piece of tissue.A surgical instrument used for cutting a circular hole. The trephine is used to cut through bone, most commonly the skull during brain surgery. Another type of trephine is used to remove a circular section from the cornea, the outer covering of the eye.A surgical instrument used to remove a circular area of tissue, usually from the comer of the eye or from bone (the latter for microscopical examination). It consists of a hollow tube with a serrated cutting edge.A compact surgical tool designed to be rotated in order to create a circular incision.A cylindrical, hollow tool equipped with a serrated edge, utilized for creating a circular aperture, often in bone.A surgical tool with a saw-like edge designed for cutting out a circular piece of bone or other tissue; used to excise a round section of the skull or a portion of the sclera to reduce high pressure within these areas.