{"id":22493,"date":"2023-04-16T19:30:02","date_gmt":"2023-04-16T12:30:02","guid":{"rendered":"http:\/\/noithathoaphat.in\/ctv\/?p=22493"},"modified":"2023-05-02T14:15:44","modified_gmt":"2023-05-02T07:15:44","slug":"dai-cuong-lam-thang-hang-rang-bang-he-thong-neo-giu","status":"publish","type":"post","link":"http:\/\/noithathoaphat.in\/ctv\/index.php\/2023\/04\/16\/dai-cuong-lam-thang-hang-rang-bang-he-thong-neo-giu\/","title":{"rendered":"\u0110\u1ea1i c\u01b0\u01a1ng l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng b\u1eb1ng h\u1ec7 th\u1ed1ng neo gi\u1eef."},"content":{"rendered":"<p><strong>Th\u00e0nh c\u00f4ng c\u1ee7a giai \u0111o\u1ea1n l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ch\u00fang ta c\u00f3 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng di chuy\u1ec3n r\u0103ng kh\u00f4ng mong mu\u1ed1n c\u00f3 th\u1ec3 x\u1ea3y ra trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a \u0111i\u1ec1u tr\u1ecb, ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 nghi\u00eang g\u1ea7n xa \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o s\u1eb5n trong m\u1eafc c\u00e0i \u0111i\u1ec1u ch\u1ec9nh s\u1eb5n. C\u00f9ng t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u00e0o v\u1ea5n \u0111\u1ec1.<\/strong><\/p>\n<h2>1. Gi\u1edbi thi\u1ec7u v\u00e0 \u0111\u1ecbnh ngh\u0129a v\u1ec1 l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng<\/h2>\n<p>Th\u00f4ng th\u01b0\u1eddng th\u00ec \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u1eb3ng h\u00e0ng r\u0103ng l\u00e0 m\u1ee5c ti\u00eau \u0111\u1ea7u ti\u00ean c\u1ee7a c\u00e1c b\u00e1c s\u0129 ch\u1ec9nh nha trong giai \u0111o\u1ea1n \u0111i\u1ec1u tr\u1ecb \u0111\u1ea7u ti\u00ean v\u00e0 n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a nh\u01b0 sau:<\/p>\n<p><em>\u0110\u00f3 l\u00e0 s\u1ef1 di chuy\u1ec3n r\u0103ng c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea9y \u0111\u01b0\u1ee3c d\u00e2y th\u00e9p ch\u1eef nh\u1eadt k\u00edch th\u01b0\u1edbc 0.19\/0.25 v\u00e0o trong khe m\u1eafc c\u00e0i v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c d\u1ea1ng cung ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng m\u1eafc c\u00e0i 0.22 \u0111i\u1ec1u ch\u1ec9nh s\u1eb5n \u0111\u01b0\u1ee3c \u0111\u1eb7t ch\u00ednh x\u00e1c.<\/em><\/p>\n<p>Th\u00e0nh c\u00f4ng c\u1ee7a giai \u0111o\u1ea1n l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ch\u00fang ta c\u00f3 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng di chuy\u1ec3n r\u0103ng kh\u00f4ng mong mu\u1ed1n c\u00f3 th\u1ec3 x\u1ea3y ra trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a \u0111i\u1ec1u tr\u1ecb, ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 nghi\u00eang g\u1ea7n xa \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o s\u1eb5n trong m\u1eafc c\u00e0i \u0111i\u1ec1u ch\u1ec9nh s\u1eb5n. C\u1ea7n ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd nh\u1eefng d\u1ecbch chuy\u1ec3n kh\u00f4ng mong mu\u1ed1n n\u00e0y c\u1ee7a r\u0103ng, hay t\u00ecnh tr\u1ea1ng sai kh\u1edbp c\u1eafn c\u00e0ng t\u1ed3i t\u1ec7 h\u01a1n trong qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng. T\u00ecnh tr\u1ea1ng n\u00e0y s\u1ebd l\u00e0m k\u00e9o d\u00e0i th\u1eddi gian \u0111i\u1ec1u tr\u1ecb v\u00e0 \u0111\u00f2i h\u1ecfi nhi\u1ec1u c\u1ed1 g\u1eafng ho\u00e0n t\u1ea5t \u0111i\u1ec1u tr\u1ecb trong c\u00e1c giai \u0111o\u1ea1n sau.<\/p>\n<p>Tuy nhi\u00ean trong su\u1ed1t qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng th\u00ec s\u1ef1 d\u1ecbch chuy\u1ec3n c\u1ee7a c\u00e1c r\u0103ng ph\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n t\u1eadp trung v\u00e0o m\u1ee5c ti\u00eau \u0111i\u1ec1u tr\u1ecb cu\u1ed1i c\u00f9ng. N\u00ean s\u1eed d\u1ee5ng m\u1ecdi bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t neo gi\u1eef \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 d\u1ecbch chuy\u1ec3n r\u0103ng kh\u00f4ng mong mu\u1ed1n. Trong ph\u1ea7n vi\u1ebft n\u00e0y, thu\u1eadt ng\u1eef \u201cki\u1ec3m so\u00e1t neo gi\u1eef trong qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng\u201d s\u1ebd c\u00f3 ngh\u0129a l\u00e0:<\/p>\n<p><em>C\u00e1c bi\u1ec7n ph\u00e1p s\u1eed d\u1ee5ng \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1eefng thay \u0111\u1ed5i kh\u00f4ng mong mu\u1ed1n trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a \u0111i\u1ec1u tr\u1ecb, sao \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u1eb3ng h\u00e0ng r\u0103ng m\u00e0 kh\u00f4ng l\u00e0m cho nh\u1eefng ch\u00eca kh\u00f3a kh\u1edbp c\u1eafn tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n.<\/em><\/p>\n<p><strong>M\u1ee5c ti\u00eau ng\u1eafn h\u1ea1n n\u1eb1m trong m\u1ee5c ti\u00eau d\u00e0i h\u1ea1n<\/strong><\/p>\n<p>L\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng c\u1ea7n xem x\u00e9t d\u1ef1a tr\u00ean nh\u1eefng m\u1ee5c ti\u00eau ng\u1eafn h\u1ea1n v\u00e0 m\u1ee5c ti\u00eau d\u00e0i h\u1ea1n:<\/p>\n<ul>\n<li>M\u1ee5c ti\u00eau \u0111i\u1ec1u tr\u1ecb ng\u1eafn h\u1ea1n trong nh\u1eefng th\u00e1ng \u0111i\u1ec1u tr\u1ecb \u0111\u1ea7u ti\u00ean s\u1ebd l\u00e0 c\u1ed1 g\u1eafng \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 th\u1eb3ng h\u00e0ng r\u0103ng h\u1ee3p l\u00fd \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0a d\u00e2y cung th\u00e9p ch\u1eef nh\u1eadt v\u00e0o \u0111\u01b0\u1ee3c trong khe m\u1eafc c\u00e0i.<\/li>\n<li>M\u1ee5c ti\u00eau \u0111i\u1ec1u tr\u1ecb d\u00e0i h\u1ea1n ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c khi k\u1ebft th\u00fac \u0111i\u1ec1u tr\u1ecb. \u0110\u00f3 l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t b\u1ed9 r\u0103ng l\u00fd t\u01b0\u1edfng th\u00f4ng qua s\u00e1u ch\u00eca kh\u00f3a kh\u1edbp c\u1eafn b\u00ecnh th\u01b0\u1eddng v\u1edbi b\u1ed9 r\u0103ng chu\u1ea9n trong m\u1ed9t khu\u00f4n m\u1eb7t ph\u00f9 h\u1ee3p.<\/li>\n<\/ul>\n<p>Kinh nghi\u1ec7m ch\u1ec9 ra r\u1eb1ng n\u1ebfu n\u00f4n n\u00f3ng mu\u1ed1n \u0111\u1ea1t m\u1ee5c ti\u00eau \u0111i\u1ec1u tr\u1ecb ng\u1eafn b\u1eb1ng c\u00e1ch b\u1ecf b\u1edbt giai \u0111o\u1ea1n \u0111i\u1ec1u tr\u1ecb, s\u1eed d\u1ee5ng l\u1ef1c m\u1ea1nh, s\u1ebd g\u00e2y ra nh\u1eefng thay \u0111\u1ed5i kh\u00f4ng mong mu\u1ed1n. S\u1ebd l\u00e0m cho m\u1ee5c ti\u00eau \u0111i\u1ec1u tr\u1ecb d\u00e0i h\u1ea1n kh\u00f3 \u0111\u1ea1t h\u01a1n.<\/p>\n<p><strong>Nh\u1eefng nguy\u00ean t\u1eafc ki\u1ec3m so\u00e1t neo gi\u1eef<\/strong><\/p>\n<p>C\u00f3 hai nguy\u00ean t\u1eafc ch\u00ednh \u0111\u1ec3 ki\u1ec3m so\u00e1t neo gi\u1eef:<\/p>\n<ol>\n<li>Gi\u1ea3m nhu c\u1ea7u neo gi\u1eef trong qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng: Gi\u1ea3m thi\u1ec3u c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn neo gi\u1eef, nh\u1eefng y\u1ebfu t\u1ed1 l\u00e0m di chuy\u1ec3n r\u0103ng kh\u00f4ng mong mu\u1ed1n &#8211; gi\u1ea3m y\u00eau c\u1ea7u neo gi\u1eef.<\/li>\n<li>Neo gi\u1eef t\u0103ng c\u01b0\u1eddng trong qu\u00e1 tr\u00ecnh th\u1eb3ng h\u00e0ng r\u0103ng \u1edf nh\u1eefng n\u01a1i c\u1ea7n thi\u1ebft, v\u00ed d\u1ee5 neo gi\u1eef t\u0103ng c\u01b0\u1eddng b\u1eb1ng cung kh\u1ea9u c\u00e1i, cung l\u01b0\u1ee1i \u0111\u1ec3 gi\u00fap ki\u1ec3m so\u00e1t t\u1ed1t m\u1ed9t r\u0103ng hay m\u1ed9t nh\u00f3m r\u0103ng n\u00e0o \u0111\u00f3.<\/li>\n<\/ol>\n<p>Nhu c\u1ea7u neo gi\u1eef ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eebng tr\u01b0\u1eddng h\u1ee3p b\u1ec7nh nh\u00e2n. Neo gi\u1eef t\u0103ng c\u01b0\u1eddng kh\u00f4ng ph\u1ea3i khi n\u00e0o c\u0169ng c\u1ea7n cho c\u1ea3 hai h\u00e0m \u0111\u1ed1i v\u1edbi m\u1ecdi b\u1ec7nh nh\u00e2n. V\u00ed d\u1ee5, \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p class I, class II ti\u1ec3u lo\u1ea1i 2 th\u00ec kh\u00f4ng c\u1ea7n b\u1ea5t c\u1ee9 m\u1ed9t bi\u1ec7n ph\u00e1p neo gi\u1eef \u0111\u1eb7c bi\u1ec7t n\u00e0o. Qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng kh\u00f4ng \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m so\u00e1t neo gi\u1eef. Tuy nhi\u00ean, h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p v\u1eabn c\u1ea7n c\u00f3 ki\u1ec3m so\u00e1t neo gi\u1eef th\u00edch h\u1ee3p v\u00e0 ch\u00fang ta c\u1ea7n x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 c\u1ea7n thi\u1ebft c\u1ee7a neo gi\u1eef cho m\u1ed7i tr\u01b0\u1eddng h\u1ee3p, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng.<\/p>\n<p><strong>C\u00e1c b\u01b0\u1edbc \u0111i\u1ec1u tr\u1ecb trong qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng<\/strong><\/p>\n<figure id=\"attachment_22498\" aria-describedby=\"caption-attachment-22498\" style=\"width: 752px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22498\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-135.png\" alt=\"neo-giu\" width=\"752\" height=\"392\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-135.png 752w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-135-300x156.png 300w\" sizes=\"(max-width: 752px) 100vw, 752px\" \/><figcaption id=\"caption-attachment-22498\" class=\"wp-caption-text\">Kh\u1edbp c\u1eafn class I chen ch\u00fac n\u1eb7ng, r\u0103ng s\u1ed1 4 \u0111\u00e3 nh\u1ed5 \u0111i t\u1eeb tr\u01b0\u1edbc, r\u0103ng c\u1eeda b\u00ean tr\u00ean ph\u1ea3i c\u1eafn ch\u00e9o, kh\u1edbp c\u1eafn t\u1eadn c\u00f9ng tr\u01b0\u1ee3t 2mm.<\/figcaption><\/figure>\n<figure id=\"attachment_22499\" aria-describedby=\"caption-attachment-22499\" style=\"width: 753px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22499\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-136.png\" alt=\"neo-giu-1\" width=\"753\" height=\"389\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-136.png 753w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-136-300x155.png 300w\" sizes=\"(max-width: 753px) 100vw, 753px\" \/><figcaption id=\"caption-attachment-22499\" class=\"wp-caption-text\">B\u1eaft \u0111\u1ea7u l\u00e0m th\u1eb3ng h\u00e0ng v\u1edbi d\u00e2y cung \u0111a s\u1ee3i 0.15 cho h\u00e0m tr\u00ean v\u00e0 d\u00e2y Niti k\u00edch ho\u1ea1t nhi\u1ec7t O16 cho h\u00e0m d\u01b0\u1edbi, \u0111\u1eb7t kh\u00e2u cho r\u0103ng c\u1eeda b\u00ean h\u00e0m tr\u00ean ph\u1ea3i, bu\u1ed9c h\u01a1i l\u1ecfng l\u1ebbo v\u00e0o d\u00e2y cung.<\/figcaption><\/figure>\n<figure id=\"attachment_22500\" aria-describedby=\"caption-attachment-22500\" style=\"width: 752px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22500\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-137.png\" alt=\"neo-giu-2\" width=\"752\" height=\"365\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-137.png 752w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-137-300x146.png 300w\" sizes=\"(max-width: 752px) 100vw, 752px\" \/><figcaption id=\"caption-attachment-22500\" class=\"wp-caption-text\">Sau 2 th\u00e1ng, g\u1eafn m\u1eafc c\u00e0i cho r\u1eb1ng c\u1eeda b\u00ean tr\u00ean ph\u1ea3i, kh\u00f4ng \u0111\u1ea3o chi\u1ec1u m\u1eafc c\u00e0i b\u1edfi v\u00ec v\u1ecb tr\u00ed c\u1ee7a ch\u00e2n r\u0103ng n\u00e0y \u0111\u00fang, kh\u00f4ng c\u1ea7n ki\u1ec3m so\u00e1t \u0111\u1ed9 xoay. D\u00f9ng d\u00e2y cung th\u00e9p \u0111a s\u1ee3i \u0111\u1ec3 l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng tr\u00ean, d\u00e2y cung th\u00e9p u\u1ed1n 0.14 cho h\u00e0m d\u01b0\u1edbi.<\/figcaption><\/figure>\n<figure id=\"attachment_22501\" aria-describedby=\"caption-attachment-22501\" style=\"width: 751px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22501\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-138.png\" alt=\"neo-giu-3\" width=\"751\" height=\"362\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-138.png 751w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-138-300x145.png 300w\" sizes=\"(max-width: 751px) 100vw, 751px\" \/><figcaption id=\"caption-attachment-22501\" class=\"wp-caption-text\">Sau 4 th\u00e1ng \u0111i\u1ec1u tr\u1ecb c\u00f3 th\u1ec3 \u0111\u1eb7t d\u00e2y cung ch\u1eef nh\u1eadt k\u00edch ho\u1ea1t nhi\u1ec7t O19\/O25 cho h\u00e0m tr\u00ean v\u00e0 h\u00e0m d\u01b0\u1edbi. D\u00e2y n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng trong v\u00e0i th\u00e1ng, c\u00f3 th\u1ec3 thay \u0111\u1ed5i chun bu\u1ed9c m\u1eafc c\u00e0i n\u1ebfu c\u1ea7n.<\/figcaption><\/figure>\n<figure id=\"attachment_22502\" aria-describedby=\"caption-attachment-22502\" style=\"width: 751px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22502\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-139.png\" alt=\"neo-giu-4\" width=\"751\" height=\"382\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-139.png 751w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-139-300x153.png 300w\" sizes=\"(max-width: 751px) 100vw, 751px\" \/><figcaption id=\"caption-attachment-22502\" class=\"wp-caption-text\">Sau khi ho\u00e0n t\u1ea5t giai \u0111o\u1ea1n th\u1eb3ng h\u00e0ng r\u0103ng. \u0110\u01b0a d\u00e2y cung th\u00e9p ch\u1eef nh\u1eadt O.19\/O25 h\u00ecnh tr\u1ee9ng v\u00e0o trong khe m\u1eafc c\u00e0i v\u1edbi m\u1eafc c\u00e0i O22.<\/figcaption><\/figure>\n<figure id=\"attachment_22503\" aria-describedby=\"caption-attachment-22503\" style=\"width: 750px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22503\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-140.png\" alt=\"\" width=\"750\" height=\"378\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-140.png 750w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-140-300x151.png 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-22503\" class=\"wp-caption-text\">Sau khi tinh ch\u1ec9nh v\u00e0 th\u00e1o b\u1ecf kh\u00ed c\u1ee5, c\u00e1c r\u0103ng kh\u00edt v\u1edbi nhau t\u1ed1t do k\u00edch th\u01b0\u1edbc c\u1ee7a r\u0103ng c\u1eeda b\u00ean tr\u00ean to.<\/figcaption><\/figure>\n<h2>2. Nh\u1eadn bi\u1ebft nhu c\u1ea7u neo gi\u1eef cho t\u1eebng b\u1ec7nh nh\u00e2n<\/h2>\n<p>Trong giai \u0111o\u1ea1n ch\u1ea9n \u0111o\u00e1n v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch \u0111i\u1ec1u tr\u1ecb cho m\u1ed7i b\u1ec7nh nh\u00e2n, th\u00ec m\u1ee5c ti\u00eau \u0111i\u1ec1u tr\u1ecb nh\u1eafm v\u00e0o v\u1ecb tr\u00ed r\u0103ng c\u1eeda trong khu\u00f4n m\u1eb7t khi k\u1ebft th\u00fac \u0111i\u1ec1u tr\u1ecb. Vi\u1ec7c quy\u1ebft \u0111\u1ecbnh v\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch (planed incisor position: PIP)<\/p>\n<p>Nhu c\u1ea7u ki\u1ec3m so\u00e1t neo gi\u1eef cho t\u1eebng tr\u01b0\u1eddng h\u1ee3p khi b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u tr\u1ecb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch so s\u00e1nh v\u1ecb tr\u00ed ban \u0111\u1ea7u c\u1ee7a r\u0103ng c\u1eeda tr\u00ean v\u00e0 d\u01b0\u1edbi v\u1edbi v\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch khi k\u1ebft th\u00fac \u0111i\u1ec1u tr\u1ecb. Trong qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng ph\u1ea3i ki\u1ec3m so\u00e1t neo gi\u1eef \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi r\u0103ng c\u1eeda tr\u00ean v\u00e0 d\u01b0\u1edbi, ho\u1eb7c n\u1ebfu di chuy\u1ec3n th\u00ec ph\u1ea3i theo chi\u1ec1u h\u01b0\u1edbng \u201cv\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch\u201d. L\u00fd t\u01b0\u1edfng nh\u1ea5t l\u00e0 s\u1ef1 di chuy\u1ec3n c\u00e1c r\u0103ng c\u1eeda ph\u1ea3i theo chi\u1ec1u h\u01b0\u1edbng \u201cv\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch\u201d trong su\u1ed1t qu\u00e1 tr\u00ecnh th\u1eb3ng h\u00e0ng r\u0103ng, c\u00f3 nh\u01b0 v\u1eady th\u00ec s\u1ebd gi\u1ea3m \u0111\u01b0\u1ee3c s\u1ed1 r\u0103ng c\u1ea7n di chuy\u1ec3n trong nh\u1eefng giai \u0111o\u1ea1n \u0111i\u1ec1u tr\u1ecb sau.<\/p>\n<p><strong>Tr\u01b0\u1eddng h\u1ee3p sai kh\u1edbp c\u1eafn lo\u1ea1i II, ti\u1ec3u lo\u1ea1i 1<\/strong><\/p>\n<figure id=\"attachment_22507\" aria-describedby=\"caption-attachment-22507\" style=\"width: 722px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22507\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-141.png\" alt=\"neo-giu-5\" width=\"722\" height=\"704\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-141.png 722w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-141-300x293.png 300w\" sizes=\"(max-width: 722px) 100vw, 722px\" \/><figcaption id=\"caption-attachment-22507\" class=\"wp-caption-text\">Sai kh\u1edbp c\u1eafn lo\u1ea1i II, ti\u1ec3u lo\u1ea1i 1<\/figcaption><\/figure>\n<p>Khi b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u tr\u1ecb, r\u0103ng c\u1eeda h\u00e0m tr\u00ean th\u01b0\u1eddng \u1edf tr\u01b0\u1edbc \u201cv\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch\u201d, v\u00e0 neo gi\u1eef t\u1ed1i \u0111a theo chi\u1ec1u tr\u01b0\u1edbc &#8211; sau \u0111\u1ec3 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng di g\u1ea7n l\u00e0m t\u0103ng \u0111\u1ed9 c\u1eafn ch\u00eca. Nh\u01b0 th\u1ea3o lu\u1eadn ti\u1ebfp theo \u1edf ch\u01b0\u01a1ng n\u00e0y, ki\u1ec3m so\u00e1t neo gi\u1eef cung h\u00e0m tr\u00ean s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch bu\u1ed9c v\u1ec1 sau v\u00e0 b\u1ebb d\u00e2y cung ph\u00eda sau. C\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng b\u1eb1ng cung kh\u1ea9u c\u00e1i, Headgear ho\u1eb7c chun class II.<\/p>\n<p>R\u0103ng c\u1eeda d\u01b0\u1edbi th\u01b0\u1eddng \u1edf \u0111\u00fang hay sau \u201cv\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch\u201d, c\u1ea7n neo gi\u1eef \u0111\u1ec3 ng\u0103n r\u0103ng c\u1eeda nghi\u00eang v\u1ec1 ph\u00eda tr\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh l\u00e0m th\u1eb3ng h\u00e0ng. Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, c\u1ea7n c\u1ea9n th\u1eadn tr\u00e1nh t\u1ea1o l\u1ef1c l\u00ean d\u00e2y cung qu\u00e1 m\u1ee9c, \u0111\u1ec3 tr\u00e1nh g\u00e2y ra hi\u1ec7u \u1ee9ng cu\u1ed9n v\u00e0 kh\u1edbp c\u1eafn s\u00e2u.<\/p>\n<p>M\u1ed1i quan t\u00e2m l\u1edbn nh\u1ea5t l\u00e0 s\u1ef1 thay \u0111\u1ed5i theo chi\u1ec1u tr\u01b0\u1edbc\/sau. Nh\u01b0ng ki\u1ec3m so\u00e1t \u0111\u1ed9 xoay v\u00e0 k\u00edch th\u01b0\u1edbc d\u1ecdc c\u1ea7n \u0111\u01b0\u1ee3c c\u00e2n nh\u1eafc v\u00e0 \u0111i\u1ec1u ch\u1ec9nh h\u1ee3p l\u00fd \u1edf t\u1eebng v\u1ecb tr\u00ed.<\/p>\n<p>Trong d\u1ea1ng sai kh\u1edbp c\u1eafn d\u01b0\u1edbi \u0111\u00e2y, v\u1ecb tr\u00ed r\u0103ng c\u1eeda ban \u0111\u1ea7u l\u00e0 \u0111\u01b0\u1eddng m\u00e0u \u0111en v\u00e0 \u201cv\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch\u201d (PIP) c\u00f3 m\u00e0u xanh, \u0111\u01b0a ra l\u1eddi gi\u1ea3i th\u00edch li\u00ean quan \u0111\u1ebfn y\u00eau c\u1ea7u \u0111i\u1ec1u tr\u1ecb c\u1ee7a tr\u01b0\u1eddng h\u1ee3p n\u00e0y. M\u1ed7i b\u1ec7nh nh\u00e2n \u0111i\u1ec1u tr\u1ecb ch\u1ec9nh nha th\u00ec kh\u00e1c nhau. V\u00e0 y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t neo gi\u1eef quy\u1ebft \u0111\u1ecbnh b\u1edfi v\u1ecb tr\u00ed r\u0103ng c\u1eeda so v\u1edbi \u201cv\u1ecb tr\u00ed r\u0103ng c\u1eeda theo k\u1ebf ho\u1ea1ch\u201d, ch\u1ee9 kh\u00f4ng ph\u1ea3i quy\u1ebft \u0111\u1ecbnh b\u1edfi t\u01b0\u01a1ng quan r\u0103ng c\u1ed1i l\u1edbn theo ph\u00e2n lo\u1ea1i c\u1ed5 \u0111i\u1ec3n c\u1ee7a Angle.<\/p>\n<p><strong>Tr\u01b0\u1eddng h\u1ee3p sai kh\u1edbp c\u1eafn lo\u1ea1i\u00a0<\/strong><b>III<\/b><\/p>\n<figure id=\"attachment_22510\" aria-describedby=\"caption-attachment-22510\" style=\"width: 705px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22510\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-142.png\" alt=\"\" width=\"705\" height=\"621\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-142.png 705w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-142-300x264.png 300w\" sizes=\"(max-width: 705px) 100vw, 705px\" \/><figcaption id=\"caption-attachment-22510\" class=\"wp-caption-text\">Sai kh\u1edbp c\u1eafn lo\u1ea1i III<\/figcaption><\/figure>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, r\u0103ng c\u1eeda h\u00e0m tr\u00ean n\u1eb1m sau PIP khi b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u tr\u1ecb, m\u1eb7c d\u00f9 trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p lo\u1ea1i III kh\u00e1c ch\u00fang c\u00f3 th\u1ec3 tr\u00f9ng v\u1edbi PIP ho\u1eb7c th\u1eadm ch\u00ed \u1edf ph\u00eda tr\u01b0\u1edbc PIP. V\u00ec th\u1ebf, bu\u1ed9c v\u00e0 u\u1ed1n cong d\u00e2y \u1edf ph\u00eda sau s\u1ebd b\u1ecb c\u1ea5m d\u00f9ng cho h\u00e0m tr\u00ean trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p lo\u1ea1i III, tr\u00e1nh cho c\u00e1c r\u0103ng c\u1eeda h\u00e0m tr\u00ean l\u00f9i l\u1ea1i, th\u1ec3 hi\u1ec7n \u0111\u1ed9 xoay ph\u00f9 h\u1ee3p theo PIP, cho ph\u00e9p ph\u00e1t tri\u1ec3n cung h\u00e0m tr\u00ean.<\/p>\n<p>Ki\u1ec3m so\u00e1t neo gi\u1eef ch\u1ec9 c\u1ea7n thi\u1ebft n\u1ebfu c\u00e1c r\u0103ng c\u1eeda h\u00e0m tr\u00ean c\u00f3 nguy c\u01a1 ng\u1ea3 v\u00e0o trong qu\u00e1 m\u1ee9c, xa h\u01a1n nhi\u1ec1u so v\u1edbi PIP.<\/p>\n<p>Nh\u1eefng r\u0103ng c\u1eeda h\u00e0m d\u01b0\u1edbi \u1edf xa tr\u01b0\u1edbc PIP trong sai l\u1ec7ch kh\u1edbp c\u1eafn lo\u1ea1i III. V\u00ec th\u1ebf, nh\u1eefng cung h\u00e0m d\u01b0\u1edbi th\u00f4ng th\u01b0\u1eddng y\u00eau c\u1ea7u c\u00f3 s\u1ef1 ki\u1ec3m so\u00e1t neo gi\u1eef \u0111\u1ea7y \u0111\u1ee7 v\u1edbi bu\u1ed9c v\u00e0 u\u1ed1n d\u00e2y \u1edf ph\u00eda sau, c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng v\u1edbi cung l\u01b0\u1ee1i ho\u1eb7c chun lo\u1ea1i III ho\u1eb7c k\u1ebft h\u1ee3p c\u1ea3 hai.<\/p>\n<p><strong>Tr\u01b0\u1eddng h\u1ee3p v\u1ea9u hai h\u00e0m<\/strong><\/p>\n<figure id=\"attachment_22512\" aria-describedby=\"caption-attachment-22512\" style=\"width: 701px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22512\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-143.png\" alt=\"\" width=\"701\" height=\"636\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-143.png 701w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-143-300x272.png 300w\" sizes=\"(max-width: 701px) 100vw, 701px\" \/><figcaption id=\"caption-attachment-22512\" class=\"wp-caption-text\">Tr\u01b0\u1eddng h\u1ee3p v\u1ea9u hai h\u00e0m<\/figcaption><\/figure>\n<p>B\u00ecnh th\u01b0\u1eddng c\u1ea7n ki\u1ec3m so\u00e1t neo gi\u1eef t\u1ed1i \u0111a cho c\u1ea3 hai h\u00e0m trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1edfi v\u00ec nh\u1eefng r\u0103ng c\u1eeda h\u00e0m tr\u00ean, h\u00e0m d\u01b0\u1edbi s\u1ebd \u1edf tr\u01b0\u1edbc PIP khi b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u tr\u1ecb.<\/p>\n<p>\u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 \u0111\u1ed9 nghi\u00eang g\u1ea7n xa c\u1ee7a m\u1eafc c\u00e0i lu\u00f4n kh\u00f4ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1edfi v\u00ec nh\u1eefng th\u00e2n r\u0103ng \u0111\u00e3 nghi\u00eang g\u1ea7n ngay khi b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u tr\u1ecb. M\u1eb7c d\u00f9 v\u1eady, ki\u1ec3m so\u00e1t neo gi\u1eef t\u1ed1i \u0111a l\u00e0 th\u00edch h\u1ee3p nh\u1ea5t trong giai \u0111o\u1ea1n \u0111i\u1ec1u tr\u1ecb ban \u0111\u1ea7u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o thu\u1eadn l\u1ee3i cho vi\u1ec7c k\u00e9o nh\u00f3m r\u0103ng tr\u01b0\u1edbc v\u1ec1 ph\u00eda sau.<\/p>\n<p><strong>Tr\u01b0\u1eddng h\u1ee3p l\u00f9i hai h\u00e0m: class II, ti\u1ec3u lo\u1ea1i 2<\/strong><\/p>\n<figure id=\"attachment_22513\" aria-describedby=\"caption-attachment-22513\" style=\"width: 703px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22513\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-144.png\" alt=\"\" width=\"703\" height=\"636\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-144.png 703w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-144-300x271.png 300w\" sizes=\"(max-width: 703px) 100vw, 703px\" \/><figcaption id=\"caption-attachment-22513\" class=\"wp-caption-text\">Sai kh\u1edbp c\u1eafn lo\u1ea1i II, ti\u1ec3u lo\u1ea1i 2<\/figcaption><\/figure>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y th\u00ec y\u00eau c\u1ea7u \u0111i\u1ec1u tr\u1ecb l\u00e0 \u0111\u1ec3 c\u00e1c r\u0103ng c\u1eeda t\u1ef1 do d\u1ecbch chuy\u1ec3n v\u1ec1 ph\u00eda tr\u01b0\u1edbc d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a d\u00e2y cung. V\u00ec th\u1ebf kh\u00f4ng bu\u1ed9c v\u00e0 u\u1ed1n d\u00e2y cung ph\u00eda sau \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho \u0111\u1ed9 nghi\u00eang m\u1eafc c\u00e0i r\u0103ng c\u1eeda ph\u00e1t huy t\u00e1c d\u1ee5ng.<\/p>\n<p>L\u00fac b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u tr\u1ecb, kh\u1edbp c\u1eafn sai v\u1edbi r\u0103ng nanh nghi\u00eang xa l\u00e0 ch\u1ec9 \u0111\u1ecbnh cho vi\u1ec7c s\u1eed d\u1ee5ng d\u00e2y cung r\u1ea5t nh\u1eb9, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho \u0111\u1ed9 nghi\u00eang v\u1ec1 ph\u00eda tr\u01b0\u1edbc v\u00e0 c\u00e1c thay \u0111\u1ed5i theo chi\u1ec1u \u0111\u1ee9ng x\u1ea3y ra s\u1edbm v\u00e0 th\u01b0\u1eddng l\u00e0 kh\u00f4ng c\u1ea7n ki\u1ec3m so\u00e1t neo gi\u1eef.<\/p>\n<h2><strong>3. Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng<\/strong><\/h2>\n<p>\u0110\u1ed9 nghi\u00eang g\u1ea7n xa \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o trong c\u00e1c m\u1eafc c\u00e0i r\u0103ng tr\u01b0\u1edbc c\u1ee7a h\u1ec7 th\u1ed1ng kh\u00ed c\u1ee5 \u0111i\u1ec1u ch\u1ec9nh s\u1eb5n g\u00e2y ra nh\u1eefng kh\u00f3 kh\u0103n \u0111\u00e1ng k\u1ec3 trong th\u1eddi k\u1ef3 \u0111\u1ea7u. \u0110\u1ed9 nghi\u00eang g\u1ea7n xa c\u1ee7a m\u1eafc c\u00e0i l\u00e0m cho th\u00e2n c\u00e1c r\u0103ng c\u1eeda nghi\u00eang ra tr\u01b0\u1edbc trong th\u1eddi k\u1ef3 \u0111\u1ea7u c\u1ee7a giai \u0111o\u1ea1n l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng.<\/p>\n<figure id=\"attachment_22521\" aria-describedby=\"caption-attachment-22521\" style=\"width: 671px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22521\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-145.png\" alt=\"neo-giu-5\" width=\"671\" height=\"665\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-145.png 671w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-145-300x297.png 300w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-145-150x150.png 150w\" sizes=\"(max-width: 671px) 100vw, 671px\" \/><figcaption id=\"caption-attachment-22521\" class=\"wp-caption-text\">\u0110\u1ed9 nghi\u00eang g\u1ea7n xa \u0111\u01b0\u1ee3c t\u1ea1o ra trong nh\u1eefng m\u1eafc c\u00e0i r\u0103ng tr\u01b0\u1edbc c\u1ee7a h\u1ec7 th\u1ed1ng kh\u00ed c\u1ee5 l\u00e0m cho th\u00e2n c\u00e1c r\u0103ng tr\u01b0\u1edbc nghi\u00eang v\u1ec1 ph\u00eda tr\u01b0\u1edbc trong giai \u0111o\u1ea1n \u0111\u1ea7u l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng.<\/figcaption><\/figure>\n<p>Trong th\u1eddi k\u1ef3 \u0111\u1ea7u n\u00e0y ng\u01b0\u1eddi ta \u0111\u00e3 th\u1eed lo\u1ea1i b\u1ecf ho\u1eb7c gi\u1ea3m thi\u1ec3u hi\u1ec7u \u1ee9ng n\u00e0y b\u1eb1ng c\u00e1ch bu\u1ed9c nh\u00f3m r\u0103ng tr\u01b0\u1edbc v\u00e0o nh\u00f3m r\u0103ng ph\u00eda sau b\u1eb1ng d\u00e2y chun. Nh\u01b0ng khi d\u00f9ng d\u00e2y chun th\u00ec \u0111\u00f2i h\u1ecfi ki\u1ec3m so\u00e1t neo gi\u1eef r\u1ea5t l\u1edbn trong giai \u0111o\u1ea1n l\u00e0m th\u1eb3ng h\u00e0ng. Nh\u01b0 v\u1eady, n\u1ebfu l\u1ef1c c\u1ee7a d\u00e2y chun l\u1edbn h\u01a1n l\u1ef1c l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng c\u1ee7a d\u00e2y cung th\u00ec c\u00f3 xu th\u1ebf l\u00e0m c\u00e1c r\u0103ng ph\u00eda tr\u01b0\u1edbc s\u1ebd nghi\u00eang v\u00e0 xoay v\u1ec1 ph\u00eda xa l\u00e0m t\u0103ng \u0111\u01b0\u1eddng cong Spee v\u00e0 kh\u1edbp c\u1eafn s\u00e2u. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t r\u00f5 r\u00e0ng trong tr\u01b0\u1eddng h\u1ee3p nh\u1ed5 r\u0103ng c\u1ed1i nh\u1ecf th\u1ee9 nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c nh\u1eafc t\u1edbi nh\u01b0 hi\u1ec7u \u1ee9ng cu\u1ed9n.<\/p>\n<figure id=\"attachment_22523\" aria-describedby=\"caption-attachment-22523\" style=\"width: 1578px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-22523\" src=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-146.png\" alt=\"\" width=\"1578\" height=\"552\" srcset=\"http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-146.png 1578w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-146-300x105.png 300w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-146-1024x358.png 1024w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-146-768x269.png 768w, http:\/\/noithathoaphat.in\/ctv\/wp-content\/uploads\/2023\/04\/Untitled-146-1536x537.png 1536w\" sizes=\"(max-width: 1578px) 100vw, 1578px\" \/><figcaption id=\"caption-attachment-22523\" class=\"wp-caption-text\">S\u1eed d\u1ee5ng l\u1ef1c c\u1ee7a d\u00e2y chun qu\u00e1 m\u1ea1nh \u0111\u1ec3 k\u00e9o r\u0103ng nanh v\u1ec1 ph\u00eda sau th\u01b0\u1eddng t\u1ea1o n\u00ean xu th\u1ebf c\u1eafn s\u00e2u v\u00f9ng r\u0103ng c\u1eeda v\u00e0 xu th\u1ebf kh\u1edbp c\u1eafn h\u1edf \u1edf ph\u00eda b\u00ean, g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng cu\u1ed9n x\u1ea3y ra trong \u0111i\u1ec1u tr\u1ecb \u1edf nh\u1eefng n\u0103m 1970 &#8211; 1980. Ng\u01b0\u1eddi ta \u0111\u00e3 nh\u1eadn th\u1ea5y hi\u1ec7u \u1ee9ng c\u1ee7a l\u1ef1c d\u00e2y chun t\u00e1c d\u1ee5ng l\u00ean r\u0103ng nanh trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u1ed5 r\u0103ng v\u00e0 s\u1eed d\u1ee5ng d\u00e2y cung nh\u1ecf: (a) Nghi\u00eang r\u0103ng v\u00e0 xoay v\u1ec1 ph\u00eda r\u0103ng nh\u1ed5; (b) Kh\u1edbp c\u0103n h\u1edf v\u00f9ng r\u0103ng c\u1ed1i nh\u1ecf; (c) Kh\u1edbp c\u1eafn s\u00e2u v\u00f9ng r\u0103ng c\u1eeda.<\/figcaption><\/figure>\n<p>Hi\u1ec7n nay hi\u1ec7u \u1ee9ng cu\u1ed9n hi\u1ebfm khi g\u1eb7p nh\u1edd c\u00f3 s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 nghi\u00eang g\u1ea7n xa trong h\u1ec7 th\u1ed1ng m\u1eafc c\u00e0i MBT, c\u00e1c l\u1ef1c d\u00e2y cung nh\u1eb9 h\u01a1n v\u00e0 s\u1eed d\u1ee5ng c\u00e1ch bu\u1ed9c v\u1ec1 ph\u00eda sau cho c\u00e1c r\u0103ng nanh thay th\u1ebf cho chun chu\u1ed7i.<\/p>\n<p><em>Theo: Systemized Orthodontic Treatment Mechanics &#8211; Richard P. McLaughlin BS DDS<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Th\u00e0nh c\u00f4ng c\u1ee7a giai \u0111o\u1ea1n l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ch\u00fang ta c\u00f3 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng di chuy\u1ec3n r\u0103ng kh\u00f4ng mong mu\u1ed1n c\u00f3 th\u1ec3 x\u1ea3y ra trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a \u0111i\u1ec1u tr\u1ecb, ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 nghi\u00eang g\u1ea7n xa \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o s\u1eb5n trong m\u1eafc c\u00e0i \u0111i\u1ec1u ch\u1ec9nh [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[28,33],"tags":[3],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0110\u1ea1i c\u01b0\u01a1ng l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng b\u1eb1ng h\u1ec7 th\u1ed1ng neo gi\u1eef. - Vinmec<\/title>\n<meta name=\"description\" content=\"Th\u00e0nh c\u00f4ng giai \u0111o\u1ea1n l\u00e0m th\u1eb3ng h\u00e0ng r\u0103ng ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 nghi\u00eang g\u1ea7n xa \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o s\u1eb5n trong m\u1eafc c\u00e0i \u0111i\u1ec1u ch\u1ec9nh s\u1eb5n. 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