{"id":34540,"date":"2023-07-03T14:17:30","date_gmt":"2023-07-03T07:17:30","guid":{"rendered":"http:\/\/noithathoaphat.in\/ctv\/?p=34540"},"modified":"2023-07-03T14:17:30","modified_gmt":"2023-07-03T07:17:30","slug":"dac-tinh-thanh-phan-hoa-hoc-cau-truc-nga-rang","status":"publish","type":"post","link":"http:\/\/noithathoaphat.in\/ctv\/index.php\/2023\/07\/03\/dac-tinh-thanh-phan-hoa-hoc-cau-truc-nga-rang\/","title":{"rendered":"\u0110\u1eb7c t\u00ednh, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng"},"content":{"rendered":"

Men r\u0103ng, ng\u00e0 r\u0103ng v\u00e0 t\u1ee7y r\u0103ng l\u00e0 ba b\u1ed9 ph\u1eadn c\u1ea5u th\u00e0nh n\u00ean r\u0103ng \u1edf ng\u01b0\u1eddi. V\u00ec v\u1eady, hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1eb7c t\u00ednh, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 v\u00e0 ch\u0103m s\u00f3c r\u0103ng mi\u1ec7ng c\u1ee7a ch\u00fang ta m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.\u00a0<\/strong><\/p>\n

\"\u0110\u1eb7c
H\u00ecnh \u1ea3nh c\u1ea5u tr\u00fac c\u1ee7a r\u0103ng<\/figcaption><\/figure>\n

1. \u0110\u1eb7c t\u00ednh v\u1eadt l\u00fd c\u1ee7a ng\u00e0 r\u0103ng<\/h4>\n
    \n
  • \u0110\u1ed9 c\u1ee9ng: Ng\u00e0 r\u0103ng m\u1ec1m h\u01a1n men r\u0103ng, nh\u01b0ng c\u1ee9ng h\u01a1n x\u01b0\u01a1ng v\u00e0 x\u01b0\u01a1ng r\u0103ng. \u0110\u1ed9 c\u1ee9ng c\u1ee7a ng\u00e0 r\u0103ng \u1edf th\u00e2n r\u0103ng, c\u1ed5 r\u0103ng v\u00e0 ch\u00e2n r\u0103ng l\u00e0 gi\u1ed1ng nhau tuy nhi\u00ean tu\u1ef3 theo t\u1eebng v\u00f9ng th\u00ec c\u00f3 s\u1ef1 kh\u00e1c nhau. V\u00f9ng ng\u00e0 c\u1ee9ng nh\u1ea5t l\u00e0 v\u00f9ng c\u00e1ch tu\u1ef7 0,4 – 0,6mm cho \u0111\u1ebfn kho\u1ea3ng gi\u1eefa ng\u00e0. \u1ede g\u1ea7n tu\u1ef7 ng\u00e0 r\u0103ng m\u1ec1m h\u01a1n 30%. Do ng\u00e0 m\u1ec1m h\u01a1n men, n\u00ean kh\u00e1c v\u1edbi men r\u0103ng, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 b\u1eb1ng tay c\u0169ng c\u00f3 th\u1ec3 n\u1ea1o b\u1ecf \u0111\u01b0\u1ee3c d\u00f9 \u1edf ng\u00e0 b\u00ecnh th\u01b0\u1eddng.<\/li>\n
  • M\u00e0u s\u1eafc: Ng\u00e0 r\u0103ng c\u00f3 m\u00e0u v\u00e0ng nh\u1ea1t. Do l\u1edbp men \u1edf b\u00ean tr\u00ean trong m\u1edd, ng\u00e0 r\u0103ng l\u00e0m cho l\u1edbp men tr\u1eafng c\u1ee7a th\u00e2n r\u0103ng c\u00f3 m\u00e0u v\u00e0ng c\u1ee7a ng\u00e0 \u1edf<\/em> b\u00ean d\u01b0\u1edbi. N\u1ebfu m\u1ea5t \u0111i l\u1edbp men v\u00e0 cement ph\u1ee7 b\u00ean ngo\u00e0i, ng\u00e0 r\u0103ng b\u1ecb l\u1ed9 ra s\u1ebd c\u00f3 nh\u1eefng s\u1eafc th\u00e1i v\u00e0ng-tr\u1eafng kh\u00e1c nhau v\u00e0 c\u00f3 b\u1ec1 m\u1eb7t r\u00e1p h\u01a1n men r\u0103ng. Ng\u00e0 r\u0103ng m\u1edbi b\u1ecb l\u1ed9 th\u01b0\u1eddng c\u00f3 m\u00e0u v\u00e0ng h\u01a1n m\u00e0u tr\u1eafng c\u1ee7a men r\u0103ng. Khi b\u1ecb l\u1ed9 l\u00e2u ng\u00e0y, ng\u00e0 r\u0103ng b\u1ecb nhi\u1ec5m m\u00e0u t\u1eeb th\u1ee9c \u0103n, thu\u1ed1c l\u00e1, khi\u1ebfn cho ch\u00fang b\u1ecb chuy\u1ec3n sang m\u00e0u v\u00e0ng h\u01a1n, th\u1eadm ch\u00ed l\u00e0 c\u00f3 m\u00e0u n\u00e2u hay \u0111en. S\u1ef1 nhi\u1ec5m m\u00e0u n\u00e0y l\u00e0 do ng\u00e0 x\u1ed1p h\u01a1n men r\u0103ng. Ng\u00e0 r\u0103ng x\u1ed1p l\u00e0 do th\u00e0nh ph\u1ea7n h\u1eefu c\u01a1 c\u1ee7a ng\u00e0 chi\u1ebfm t\u1ef7 l\u1ec7 cao v\u00e0 ng\u00e0 c\u00f3 nhi\u1ec1u \u1ed1ng nh\u1ecf gi\u1ed1ng nh\u01b0 b\u1ecdt bi\u1ec3n l\u00e0m gi\u1eef l\u1ea1i c\u00e1c ch\u1ea5t m\u00e0u. S\u1ef1 nhi\u1ec5m m\u00e0u n\u00e0y l\u00e0 m\u1ed9t v\u00e2h \u0111\u1ec1 v\u1ec1 th\u1ea9m m\u1ef9 m\u00e0 nhi\u1ec1u b\u1ec7nh nh\u00e2n quan t\u00e2m.<\/li>\n<\/ul>\n

    Vi\u1ec7c lo\u1ea1i b\u1ecf nh\u1eefng ch\u1ea5t m\u00e0u b\u1eb1ng d\u1ee5ng c\u1ee5 c\u1ea7m tay hay d\u1ee5ng c\u1ee5 ch\u1ea1y b\u1eb1ng m\u00e1y c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t th\u00eam ng\u00e0 r\u0103ng, do v\u1eady, vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch m\u00e1y si\u00eau \u00e2m c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn \u0111\u1ec3 lo\u1ea1i b\u1ecf nh\u1eefng m\u1ea3ng m\u00e0u m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t t\u1ed5 ch\u1ee9c c\u1ee9ng c\u1ee7a r\u0103ng.<\/p>\n

      \n
    • \u0110\u1ed9 \u0111\u00e0n h\u1ed3i cao.<\/li>\n
    • Ng\u00e0 r\u0103ng x\u1ed1p v\u00e0 c\u00f3 t\u00ednh th\u1ea5m.<\/li>\n
    • \u00cdt c\u1ea3n quang h\u01a1n men r\u0103ng. Tr\u00ean phim Xquang, c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1ee9c \u0111\u1ed9 kho\u00e1ng ho\u00e1 c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau c\u1ee7a r\u0103ng. Men r\u0103ng c\u1ea3n quang h\u01a1n, ng\u00e0 th\u1ea5u quang h\u01a1n v\u00e0 c\u1ea3n quang h\u01a1n tu\u1ef7.<\/li>\n<\/ul>\n

      2. Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a ng\u00e0 r\u0103ng<\/h4>\n

      2.1. Th\u00e0nh ph\u1ea7n h\u1eefu c\u01a1<\/h5>\n

      Chi\u1ebfm kho\u1ea3ng 30%. Ch\u1ea5t t\u1ef1a h\u1eefu c\u01a1 c\u1ee7a ng\u00e0 r\u0103ng ch\u1ee9a 91 – 92% collagen. Ph\u1ea7n l\u1edbn l\u00e0 collagen type I.<\/p>\n

      2.2. Th\u00e0nh ph\u1ea7n v\u00f4 c\u01a1<\/h5>\n

      Th\u00e0nh ph\u1ea7n v\u00f4 c\u01a1 chi\u1ebfm kho\u1ea3ng 70%, 20% l\u00e0 h\u1eefu c\u01a1, 10% c\u00f2n l\u1ea1i l\u00e0 n\u01b0\u1edbc. Th\u00e0nh ph\u1ea7n v\u00f4 c\u01a1 ch\u00ednh l\u00e0 c\u00e1c tinh th\u1ec3 phosphat calci d\u1ea1ng apatite (Ca10<\/sub>(PO4<\/sub>)6<\/sub>(OH)2)<\/sub>). Calcium hydroxyapatite n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y v\u1edbi t\u1ef7 l\u1ec7 cao h\u01a1n \u1edf men v\u00e0 th\u1ea5p h\u01a1n \u1edf x\u01b0\u01a1ng v\u00e0 cement, v\u1ec1 th\u1ec3 t\u00edch c\u00e1c tinh th\u1ec3 n\u00e0y chi\u1ebfm 90% ng\u00e0 quanh \u1ed1ng v\u00e0 50% ng\u00e0 gian \u1ed1ng. C\u00e1c tinh th\u1ec3 \u1edf ng\u00e0 r\u0103ng c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n \u1edf men r\u0103ng, tuy nhi\u00ean ch\u00fang c\u00f3 h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u1edf x\u01b0\u01a1ng r\u0103ng.<\/p>\n

      Trong th\u00e0nh ph\u1ea7n c\u1ee7a ng\u00e0 r\u0103ng c\u00f2n c\u00f3 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf carbon, Mg, F, ch\u00ec, k\u1ebdm… v\u1edbi h\u00e0m l\u01b0\u1ee3ng thay \u0111\u1ed5i<\/p>\n

      3. C\u1ea5u tr\u00fac t\u1ed5 ch\u1ee9c h\u1ecdc c\u1ee7a ng\u00e0 r\u0103ng<\/h4>\n

      Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u: Quan s\u00e1t tr\u00ean ti\u00eau b\u1ea3n ng\u00e0 r\u0103ng l\u00e0m b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p m\u00e0i kh\u00f4ng kh\u1eed kho\u00e1ng ho\u1eb7c nh\u1eefng ti\u00eau b\u1ea3n l\u00e0m b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p c\u1eaft nhu\u1ed9m nh\u1eefng t\u1ed5 ch\u1ee9c ng\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c kh\u1eed v\u00f4i ho\u1eb7c kh\u00f4ng kh\u1eed v\u00f4i.<\/p>\n

      3.1. \u0110\u1ea1i th\u1ec3:<\/h5>\n

      Quan s\u00e1t b\u1eb1ng k\u00ednh l\u00fap ch\u00fang ta th\u1ea5y ng\u00e0 c\u00f3 nhi\u1ec1u \u1ed1ng nh\u1ecf ch\u1ea1y theo chi\u1ec1u d\u00e0y c\u1ee7a ng\u00e0, ngo\u00e0i ra ch\u00fang ta c\u0169ng c\u00f3 th\u1ec3 th\u1ea5y c\u00e1c \u0111\u01b0\u1eddng v\u00e2n Von Ebner gi\u1ed1ng nh\u01b0 c\u00e1c \u0111\u01b0\u1eddng Retzius \u1edf men r\u0103ng.<\/p>\n

      3.2.Vi th\u1ec3:<\/h5>\n

      Quan s\u00e1t ng\u00e0 tr\u01b0\u1edfng th\u00e0nh tr\u00ean k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n \u00ed \u1eed c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c c\u00e1c c\u1ea5u tr\u00fac nh\u01b0 \u1ed1ng ng\u00e0 v\u00e0 c\u00e1c lo\u1ea1i ng\u00e0, kh\u00f3 quan s\u00e1t \u0111\u01b0\u1ee3c c\u00e1c nh\u00fa nguy\u00ean b\u00e0o ng\u00e0 tr\u00ean k\u00ednh hi\u1ec3n vi.<\/p>\n

      B\u1eb1ng c\u00e1c k\u00ednh ph\u00f3ng \u0111\u1ea1i nh\u1ecf ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y r\u00f5 c\u00e1c \u0111\u01b0\u1eddng Von Ebner, c\u00e1c \u0111\u01b0\u1eddng r\u00f5 r\u00e0ng h\u01a1n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng Owen. Tu\u1ef3 theo giai \u0111o\u1ea1n sinh ng\u00e0 hay ho\u00e0n c\u1ea3nh sinh ng\u00e0 m\u00e0 ng\u00e0 s\u1ebd c\u00f3 c\u00e1c c\u1ea5u tr\u00fac kh\u00e1c nhau.<\/p>\n

      L\u1edbp h\u1ea1t Tome c\u00f3 nhi\u1ec1u nh\u1ea5t \u1edf v\u00f9ng ngo\u1ea1i vi c\u1ee7a ng\u00e0 r\u0103ng b\u00ean d\u01b0\u1edbi cement ch\u00e2n r\u0103ng, g\u1ea7n \u0111\u01b0\u1eddng ranh gi\u1edbi men-ng\u00e0. V\u00f9ng n\u00e0y ch\u1ec9 th\u1ea5y c\u00e1c h\u1ea1t nh\u1ecf do tr\u00ean k\u00ednh hi\u1ec3n vi ch\u00fang c\u00f3 d\u1ea1ng c\u00e1c \u0111\u1ed1m. Nguy\u00ean nh\u00e2n c\u1ee7a nh\u1eefng thay \u0111\u1ed5i trong v\u00f9ng n\u00e0y v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c bi\u1ebft r\u00f5. C\u00f3 th\u1ec3 l\u00e0 do nh\u1eefng v\u00f9ng ng\u1ea5m v\u00f4i k\u00e9m c\u1ee7a ng\u00e0 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ng\u00e0 gian c\u1ea7u hay c\u00e1c nh\u00e1nh t\u1eadn c\u1ee7a c\u00e1c \u1ed1ng ng\u00e0 \u1edf<\/em> g\u1ea7n \u0111\u01b0\u1eddng ranh gi\u1edbi cement-ng\u00e0 gi\u1ed1ng nh\u01b0 c\u1ee7a \u0111\u01b0\u1eddng ranh gi\u1edbi men-ng\u00e0.<\/p>\n

      \"C\u1ea5u
      H\u00ecnh \u1ea3nh minh h\u1ecda<\/figcaption><\/figure>\n

      4. K\u1ebft lu\u1eadn<\/h4>\n

      T\u1ed5ng k\u1ebft l\u1ea1i, ng\u00e0 r\u0103ng l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng r\u0103ng mi\u1ec7ng c\u1ee7a con ng\u01b0\u1eddi, c\u00f3 t\u00ednh c\u1ee9ng, \u0111\u1ed9 b\u1ec1n cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p l\u1ef1c v\u00e0 va \u0111\u1eadp t\u1ed1t. Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a ng\u00e0 r\u0103ng l\u00e0 hydroxyapatit, k\u1ebft h\u1ee3p v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n h\u1eefu c\u01a1 kh\u00e1c nh\u01b0 collagen v\u00e0 protein. C\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng c\u00f3 l\u1edbp v\u1ecf b\u00ean ngo\u00e0i b\u1ea3o v\u1ec7 l\u00f5i c\u1ee7a r\u0103ng, ch\u1ee9a c\u00e1c m\u1ea1ch m\u00e1u v\u00e0 d\u00e2y th\u1ea7n kinh gi\u00fap cung c\u1ea5p dinh d\u01b0\u1ee1ng v\u00e0 b\u1ea3o v\u1ec7 r\u0103ng. Ngo\u00e0i ra, ng\u00e0 r\u0103ng c\u00f2n c\u00f3 nh\u1eefng \u0111\u1eb7c t\u00ednh kh\u00e1c nh\u01b0 \u0111\u1ed9 nh\u1ea1y c\u1ea3m, kh\u1ea3 n\u0103ng t\u1ef1 ph\u1ee5c h\u1ed3i v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n.<\/p>\n

      V\u00ec v\u1eady, hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1eb7c t\u00ednh, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 v\u00e0 ch\u0103m s\u00f3c r\u0103ng mi\u1ec7ng c\u1ee7a con ng\u01b0\u1eddi. \u0110\u1ed3ng th\u1eddi, nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n ti\u1ebfp t\u1ee5c v\u1ec1 ng\u00e0 r\u0103ng s\u1ebd gi\u00fap nha s\u0129 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ch\u00fang v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c c\u1ee7a m\u00ecnh, \u0111\u1ed3ng th\u1eddi t\u0103ng c\u01b0\u1eddng s\u1ee9c kh\u1ecfe r\u0103ng mi\u1ec7ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c s\u1ed1ng c\u1ee7a ng\u01b0\u1eddi d\u00e2n.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Men r\u0103ng, ng\u00e0 r\u0103ng v\u00e0 t\u1ee7y r\u0103ng l\u00e0 ba b\u1ed9 ph\u1eadn c\u1ea5u th\u00e0nh n\u00ean r\u0103ng \u1edf ng\u01b0\u1eddi. V\u00ec v\u1eady, hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1eb7c t\u00ednh, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 v\u00e0 ch\u0103m s\u00f3c r\u0103ng mi\u1ec7ng c\u1ee7a ch\u00fang ta m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.\u00a0 […]<\/p>\n","protected":false},"author":29,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[28,33],"tags":[],"yoast_head":"\n\u0110\u1eb7c t\u00ednh, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng - Vinmec<\/title>\n<meta name=\"description\" content=\"B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap ta hi\u1ec3u th\u00eam v\u1ec1 \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng,..........\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1eb7c t\u00ednh, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, c\u1ea5u tr\u00fac c\u1ee7a ng\u00e0 r\u0103ng - 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