{"id":1661,"date":"2025-08-19T14:32:17","date_gmt":"2025-08-19T14:32:17","guid":{"rendered":"https:\/\/hocera.com\/?p=1661"},"modified":"2025-12-25T07:01:38","modified_gmt":"2025-12-25T07:01:38","slug":"pmma-don-sac-co-bi-nga-vang-theo-thoi-gian-khong-huong-dan-thuc-hanh-trong-phong-thi-nghiem-cua-hocera","status":"publish","type":"post","link":"https:\/\/hocera.com\/vi\/blog\/2025\/08\/19\/does-monochrome-pmma-yellow-over-time-a-lab-ready-guide-by-hocera\/","title":{"rendered":"PMMA \u0111\u01a1n s\u1eafc c\u00f3 b\u1ecb ng\u1ea3 v\u00e0ng theo th\u1eddi gian kh\u00f4ng? H\u01b0\u1edbng d\u1eabn d\u00e0nh cho ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ee7a Hocera"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c n\u0103ng \u0111\u1ed9ng c\u1ee7a c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m nha khoa, hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a v\u1eadt li\u1ec7u l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 thi\u1ebfu. <strong>PMMA (Polymethyl Methacrylate)<\/strong> N\u00f3 v\u1eabn l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t cho m\u00e3o r\u0103ng t\u1ea1m th\u1eddi, c\u1ea7u r\u0103ng v\u00e0 ph\u1ee5c h\u00ecnh r\u0103ng. Nh\u01b0ng m\u1ed9t c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p trong gi\u1edbi nha khoa l\u00e0:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <em>PMMA \u0111\u01a1n s\u1eafc c\u00f3 b\u1ecb ng\u1ea3 v\u00e0ng theo th\u1eddi gian kh\u00f4ng?<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea1i Hocera, ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p PMMA ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n v\u1ec1 m\u1eb7t khoa h\u1ecdc, c\u00e1c v\u1ea5n \u0111\u1ec1 th\u1ef1c ti\u1ec5n v\u00e0 nh\u1eefng c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 duy tr\u00ec t\u00ednh th\u1ea9m m\u1ef9 l\u00e2u d\u00e0i cho c\u00e1c ph\u1ee5c h\u00ecnh c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. Hi\u1ec3u v\u1ec1 PMMA trong Nha khoa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PMMA l\u00e0 m\u1ed9t <strong>V\u1eadt li\u1ec7u t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc, nh\u1eb9 v\u00e0 d\u1ec5 gia c\u00f4ng<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ecdn v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e3o r\u0103ng v\u00e0 c\u1ea7u r\u0103ng t\u1ea1m th\u1eddi<\/li>\n\n\n\n<li>M\u00f4 h\u00ecnh ch\u1ea9n \u0111o\u00e1n<\/li>\n\n\n\n<li>Ph\u1ee5c h\u00ecnh t\u1ea1m th\u1eddi \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u1ea5y gh\u00e9p<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng v\u00e0 s\u1ef1 ti\u1ec7n l\u1ee3i trong quy tr\u00ecnh s\u1eed d\u1ee5ng khi\u1ebfn n\u00f3 tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u1ea3 quy tr\u00ecnh l\u00e0m vi\u1ec7c t\u1ea1i ph\u00f2ng kh\u00e1m v\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. T\u1ea1i sao PMMA b\u1ecb ng\u1ea3 v\u00e0ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1ed1ng nh\u01b0 nhi\u1ec1u lo\u1ea1i polymer kh\u00e1c, PMMA c\u00f3 th\u1ec3 tr\u1ea3i qua nh\u1eefng thay \u0111\u1ed5i theo th\u1eddi gian do nhi\u1ec1u nguy\u00ean nh\u00e2n. <strong>c\u00e1c y\u1ebfu t\u1ed1 b\u00ean ngo\u00e0i v\u00e0 b\u00ean trong<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ti\u1ebfp x\u00fac v\u1edbi tia c\u1ef1c t\u00edm<\/strong> \u2013 \u00c1nh n\u1eafng m\u1eb7t tr\u1eddi v\u00e0 \u00e1nh s\u00e1ng m\u1ea1nh chi\u1ebfu v\u00e0o gh\u1ebf nha khoa c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng d\u1ea7n \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n m\u00e0u.<\/li>\n\n\n\n<li><strong>M\u00f4i tr\u01b0\u1eddng mi\u1ec7ng<\/strong> \u2013 C\u00e0 ph\u00ea, tr\u00e0, h\u00fat thu\u1ed1c v\u00e0 th\u1ef1c ph\u1ea9m c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i m\u00e0u s\u1eafc.<\/li>\n\n\n\n<li><strong>Ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u<\/strong> \u2013 PMMA lo\u1ea1i th\u1ea5p h\u01a1n c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n m\u00e0u k\u00e9m h\u01a1n v\u00e0 \u0111\u1ed9 x\u1ed1p cao h\u01a1n.<\/li>\n\n\n\n<li><strong>Qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a<\/strong> \u2013 S\u1ef1 ph\u00e2n h\u1ee7y t\u1ef1 nhi\u00ean c\u1ee7a polyme c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 \u0111\u1ed5i m\u00e0u nh\u1eb9.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. PMMA \u0111\u01a1n s\u1eafc so v\u1edbi PMMA \u0111a l\u1edbp<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PMMA \u0111\u01a1n s\u1eafc<\/strong>\n<ul class=\"wp-block-list\">\n<li>M\u00e0u s\u1eafc \u0111\u01a1n gi\u1ea3n (A1, A2, B1, v.v.)<\/li>\n\n\n\n<li>Ti\u1ebft ki\u1ec7m chi ph\u00ed cho vi\u1ec7c s\u1eed d\u1ee5ng ng\u1eafn h\u1ea1n.<\/li>\n\n\n\n<li>D\u1ec5 b\u1ecb \u1ed1 v\u00e0ng h\u01a1n n\u1ebfu \u0111eo trong th\u1eddi gian d\u00e0i.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>PMMA nhi\u1ec1u l\u1edbp<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi c\u00e1c l\u1edbp m\u00e0u chuy\u1ec3n s\u1eafc \u0111\u1ec3 t\u1ea1o v\u1ebb ngo\u00e0i t\u1ef1 nhi\u00ean h\u01a1n.<\/li>\n\n\n\n<li>Mang l\u1ea1i v\u1ebb ngo\u00e0i th\u1ea9m m\u1ef9 t\u1ed1t h\u01a1n m\u1ed9t ch\u00fat theo th\u1eddi gian.<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c \u01b0a chu\u1ed9ng cho ph\u1ee5c h\u00ecnh t\u1ea1m th\u1eddi d\u00e0i h\u1ea1n.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. C\u00e1ch gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng \u1ed1 v\u00e0ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tin vui l\u00e0: <strong>Hi\u1ec7n t\u01b0\u1ee3ng \u1ed1 v\u00e0ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u \u0111\u00e1ng k\u1ec3 b\u1eb1ng c\u00e1ch x\u1eed l\u00fd \u0111\u00fang c\u00e1ch v\u00e0 l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u1eed d\u1ee5ng <strong>\u0111\u0129a PMMA m\u1eadt \u0111\u1ed9 cao, \u0111\u1ea1t ti\u00eau chu\u1ea9n y t\u1ebf<\/strong> (gi\u1ed1ng nh\u01b0 d\u00f2ng s\u1ea3n ph\u1ea9m cao c\u1ea5p c\u1ee7a Hocera) \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 x\u1ed1p.<\/li>\n\n\n\n<li>Tr\u00e1nh \u0111\u1ec3 b\u1ec7nh nh\u00e2n ti\u1ebfp x\u00fac l\u00e2u v\u1edbi c\u00e1c ch\u1ea5t g\u00e2y \u1ed1 m\u00e0u trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li>\u0110\u00e1nh b\u00f3ng b\u1ec1 m\u1eb7t th\u1eadt k\u1ef9 \u0111\u1ec3 gi\u1ea3m s\u1ef1 t\u00edch t\u1ee5 m\u1ea3ng b\u00e1m.<\/li>\n\n\n\n<li>\u0110\u1ed1i v\u1edbi r\u0103ng gi\u1ea3 t\u1ea1m th\u1eddi s\u1eed d\u1ee5ng l\u00e2u d\u00e0i, h\u00e3y ch\u1ecdn lo\u1ea1i PMMA nhi\u1ec1u l\u1edbp \u0111\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea9m m\u1ef9 t\u1ed1t h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. Khi n\u00e0o hi\u1ec7n t\u01b0\u1ee3ng \u1ed1 v\u00e0ng th\u1ef1c s\u1ef1 quan tr\u1ecdng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, <strong>PMMA \u0111\u01a1n s\u1eafc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c v\u1eadt li\u1ec7u t\u1ea1m th\u1eddi ng\u1eafn h\u1ea1n.<\/strong>\u2014t\u1eeb v\u00e0i ng\u00e0y \u0111\u1ebfn v\u00e0i tu\u1ea7n\u2014trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y s\u1ef1 thay \u0111\u1ed5i m\u00e0u s\u1eafc l\u00e0 t\u1ed1i thi\u1ec3u v\u00e0 kh\u00f4ng c\u00f3 \u00fd ngh\u0129a l\u00e2m s\u00e0ng.<br>V\u00ec <strong>c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u1ea7n s\u1eed d\u1ee5ng trong nhi\u1ec1u th\u00e1ng<\/strong>, \u0111\u1ea7u t\u01b0 v\u00e0o <strong>PMMA nhi\u1ec1u l\u1edbp ch\u1ea5t l\u01b0\u1ee3ng cao<\/strong> \u0110\u1ea3m b\u1ea3o c\u1ea3 ch\u1ee9c n\u0103ng v\u00e0 t\u00ednh th\u1ea9m m\u1ef9 \u0111\u1ec1u \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eady, PMMA \u0111\u01a1n s\u1eafc c\u00f3 b\u1ecb ng\u1ea3 v\u00e0ng theo th\u1eddi gian kh\u00f4ng?<br>\u2705 C\u00f3, nh\u01b0ng ch\u1ee7 y\u1ebfu l\u00e0 \u1edf <strong>c\u00e1c k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng<\/strong> v\u00e0 t\u00f9y thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u.<br>V\u1edbi <strong>C\u00e1c gi\u1ea3i ph\u00e1p PMMA s\u1eb5n s\u00e0ng cho ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ee7a Hocera<\/strong>, B\u1ea1n c\u00f3 th\u1ec3 tin t\u01b0\u1edfng v\u00e0o \u0111\u1ed9 b\u1ec1n cao, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh m\u00e0u s\u1eafc nh\u1ea5t qu\u00e1n v\u00e0 hi\u1ec7u su\u1ea5t gia c\u00f4ng m\u01b0\u1ee3t m\u00e0, \u0111\u00e1p \u1ee9ng s\u1ef1 h\u00e0i l\u00f2ng c\u1ee7a c\u1ea3 b\u00e1c s\u0129 v\u00e0 b\u1ec7nh nh\u00e2n.<\/p>\n<style>\r\n.lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }.lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(25% - 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C\u1ea9m nang chuy\u00ean nghi\u1ec7p c\u1ee7a Hocera<\/span><\/a><\/li>                    <\/ul>\r\n                    <ul class=\"lwrp-list lwrp-list-double lwrp-list-right\">\r\n                        <li class=\"lwrp-list-item\"><a href=\"https:\/\/hocera.com\/es\/blog\/2025\/03\/13\/10-essential-dental-materials-every-dentist-should-master-by-hocera\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">10 V\u1eadt Li\u1ec7u Nha Khoa Thi\u1ebft Y\u1ebfu M\u00e0 M\u1ecdi Nha S\u0129 N\u00ean N\u1eafm V\u1eefng \u2014 Theo Hocera<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/hocera.com\/es\/blog\/2025\/08\/15\/hocera-dental-burs-usage-guide\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 phay nha khoa \u0111\u1ec3 ch\u1ebf t\u1ea1o m\u00e1ng b\u1ea3o v\u1ec7 r\u0103ng ban \u0111\u00eam kh\u00f4ng? \u2013 Th\u00f4ng tin t\u1eeb Hocera<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/hocera.com\/es\/blog\/2025\/08\/14\/the-ultimate-guide-to-dental-zirconia-crowns-strength-aesthetics-and-longevity\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 m\u00e3o r\u0103ng s\u1ee9 Zirconia: \u0110\u1ed9 b\u1ec1n, t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 tu\u1ed5i th\u1ecd<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/hocera.com\/es\/blog\/2025\/07\/24\/what-do-immediate-implantation-immediate-restoration-and-immediate-weight-bearing-refer-to\/\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">C\u1ea5y gh\u00e9p t\u1ee9c th\u00ec, ph\u1ee5c h\u00ecnh t\u1ee9c th\u00ec v\u00e0 ch\u1ecbu tr\u1ecdng l\u01b0\u1ee3ng t\u1ee9c th\u00ec c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/span><\/a><\/li>                    <\/ul>\r\n                <\/div>\r\n                        <\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 xem PMMA \u0111\u01a1n s\u1eafc c\u00f3 b\u1ecb \u1ed1 v\u00e0ng theo th\u1eddi gian hay kh\u00f4ng, nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 \u0111\u1ed5i m\u00e0u v\u00e0 l\u00e0m th\u1ebf n\u00e0o c\u00e1c \u0111\u0129a PMMA cao c\u1ea5p c\u1ee7a Hocera \u0111\u1ea3m b\u1ea3o t\u00ednh th\u1ea9m m\u1ef9 l\u00e2u d\u00e0i trong c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m nha khoa.<\/p>","protected":false},"author":1,"featured_media":1663,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[171,169],"tags":[],"class_list":["post-1661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-updates","category-insights-resources"],"acf":[],"_links":{"self":[{"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/posts\/1661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/comments?post=1661"}],"version-history":[{"count":0,"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/posts\/1661\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/media\/1663"}],"wp:attachment":[{"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/media?parent=1661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/categories?post=1661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocera.com\/vi\/wp-json\/wp\/v2\/tags?post=1661"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}