{"id":1046,"date":"2019-07-19T10:11:21","date_gmt":"2019-07-19T08:11:21","guid":{"rendered":"https:\/\/magazine.zhermack.com\/laboratory-en\/perche-utilizzare-un-portaimpronta-individuale-per-le-protesi-rispetto-a-quello-standard\/"},"modified":"2023-09-08T14:34:05","modified_gmt":"2023-09-08T12:34:05","slug":"why-use-custom-impression-tray-for-prostheses","status":"publish","type":"post","link":"https:\/\/magazine.zhermack.com\/en\/laboratory-en\/why-use-custom-impression-tray-for-prostheses\/","title":{"rendered":"Why use a custom impression tray for prostheses rather than a standard model?"},"content":{"rendered":"\n<div class=\"youtube-responsive-container\"><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/afYGJfcXm0I\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><\/div>\n\n\n\n<p>The impression tray is the starting point\nfor any type of indirect rehabilitation, whether a mobile prosthesis, or a\nprosthesis on implant.<\/p>\n\n\n\n<p>The first step in choosing the correct\nimpression tray is determining whether the procedure requires a<strong>&nbsp;standard\nor custom tray<\/strong>.<\/p>\n\n\n\n<p>The standard devices on the market are\navailable <strong>in solid or perforated metal<\/strong> or&nbsp;<strong>in resin.<\/strong> The\nlatter are disposable and do not allow a high degree of precision due to their\nlack of rigidity, however they have the advantage of&nbsp;<strong>allowing the\nremoval of parts of the tray in certain situations,<\/strong>&nbsp;such as allowing\nthe passage of long transfers for impressions on implants.<\/p>\n\n\n\n<p>One area where&nbsp;<strong>customisation&nbsp;<\/strong>is\nparticularly useful in dentistry is the use of custom impression trays, also\nmade from resin, but created using an initial impression of the patient\u2019s\nmouth, resulting in a more accurate reproduction of the various surfaces in the\noral cavity.<\/p>\n\n\n\n<p>Use of a custom tray is fundamental for a\nquality impression.<\/p>\n\n\n\n<p><strong>Custom impression trays for total prostheses<\/strong><\/p>\n\n\n\n<p>Complete dentures are another application\nwhere custom impression trays truly come into their own. In this case <strong>the\ntray must be incredibly precise<\/strong>, and is made from an accurate initial\nimpression in alginate.&nbsp;&nbsp;<\/p>\n\n\n\n<p>The device is made from&nbsp;<strong><a href=\"https:\/\/www.zhermack.com\/en\/product\/elite-lc-tray-2\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (apre in una nuova scheda)\">photopolymerisable resin<\/a><\/strong>, taking the areas where compression should be avoided during the impression process into account, namely:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>the&nbsp;<strong>soft tissues<\/strong>&nbsp;which may be altered by the pressure of the tray;<\/li>\n\n\n\n<li>the&nbsp;<strong>areas of muscle activity<\/strong>&nbsp;which might dislodge the prosthesis;<\/li>\n\n\n\n<li>the points where&nbsp;<strong>the passage of nerves or blood vessels<\/strong>&nbsp;could cause pain on pressure, or which could be damaged by the future prosthesis.<\/li>\n<\/ul>\n\n\n\n<p>A&nbsp;<strong>close collaboration between the\nclinician and the dental technician<\/strong> is vital. When using the functional\nimpression technique, once the initial alginate impression has been obtained,\nthe dentist should mark the functional areas to be rejected or excluded.<\/p>\n\n\n\n<p>With this technique, the dentist should\nincrease the retention of the impression tray to the soft tissues when taking\nthe impression from the patient, achieved <strong>using thermoplastic pastes<\/strong>\ndesigned to obtain a good marginal seal.<\/p>\n\n\n\n<p>Holes can be made to increase the retention\nof the impression material to the tray, the size of which is dependent on the\nmaterial used &#8211; smaller for a polysulfide, larger for an alginate.<\/p>\n\n\n\n<p>Using a custom tray means creating an\narticle which is tailor-made to the anatomy of the patient, resulting in a more\nprecise impression, increased patient comfort, and less wastage of material.<\/p>\n\n\n\n<p>The ability to&nbsp;<strong>customise the\nimpression tray according to patient anatomy<\/strong> allows the dentist to take a\nmore precise impression, reducing the risk of material deformation and\ncompression of the soft tissues.<\/p>\n\n\n\n<p>All of this results in a better-quality\nimpression, an indispensable prerequisite for creating a prosthesis which meets\nthe needs and characteristics of each individual patient.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The impression tray is the starting point for any type of indirect rehabilitation, whether a mobile prosthesis, or a prosthesis on implant. The first step in choosing the correct impression tray is determining whether the procedure requires a&nbsp;standard or custom tray. The standard devices on the market are available in solid or perforated metal or&nbsp;in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":847,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":"","footnotes":""},"categories":[38],"tags":[255,256],"class_list":["post-1046","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laboratory-en","tag-portaimpronta-en","tag-protesi-en"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/posts\/1046","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/comments?post=1046"}],"version-history":[{"count":0,"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/posts\/1046\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/media\/847"}],"wp:attachment":[{"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/media?parent=1046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/categories?post=1046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/magazine.zhermack.com\/en\/wp-json\/wp\/v2\/tags?post=1046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}