{"id":19111,"date":"2023-04-12T16:49:37","date_gmt":"2023-04-12T09:49:37","guid":{"rendered":"http:\/\/noithathoaphat.in\/ctv\/?p=19111"},"modified":"2023-04-17T14:42:50","modified_gmt":"2023-04-17T07:42:50","slug":"tram-bit-ong-tuy-tong-quan-vat-lieu","status":"publish","type":"post","link":"http:\/\/noithathoaphat.in\/ctv\/index.php\/2023\/04\/12\/tram-bit-ong-tuy-tong-quan-vat-lieu\/","title":{"rendered":"Tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 – T\u1ed5ng quan v\u1eadt li\u1ec7u."},"content":{"rendered":"

Tr\u00e1m b\u00edt h\u1ec7 th\u1ed1ng \u1ed1ng tu\u1ef7 nh\u1eb1m m\u1ee5c \u0111\u00edch b\u00edt k\u00edn v\u00e0 ch\u1eb7t kho\u1ea3ng tr\u1ed1ng trong \u1ed1ng tu\u1ef7 t\u1edbi v\u00f9ng ti\u1ebfp x\u00fac ng\u00e0 – cement k\u1ec3 c\u1ea3 c\u00e1c \u1ed1ng tu\u1ef7 ph\u1ee5 b\u1eb1ng ch\u1ea5t tr\u01a1, k\u00edch th\u01b0\u1edbc c\u1ed5 \u0111\u1ecbnh v\u00e0 t\u01b0\u01a1ng h\u1ee3p sinh h\u1ecdc. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed5ng quan c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 th\u01b0\u1eddng quy, \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u00fang. C\u00f9ng b\u00e0n lu\u1eadn s\u00e2u v\u00e0o v\u1ea5n \u0111\u1ec1.<\/strong><\/p>\n

1. Ti\u00eau chu\u1ea9n c\u1ee7a v\u1eadt li\u1ec7u tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7<\/h2>\n

\u0110\u00e3 c\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch ph\u00e1t tri\u1ec3n qua nhi\u1ec1u n\u0103m k\u1ec3 t\u1eeb khi v\u1eadt li\u1ec7u th\u1ea1ch cao Paris, c\u00e1c kim lo\u1ea1i qu\u00fd nh\u01b0 v\u00e0ng v\u00e0 iridioplatinum \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Ng\u00e0y nay, nhi\u1ec1u v\u1eadt li\u1ec7u \u0111\u00e3 b\u1ecb lo\u1ea1i b\u1ecf b\u1edfi kh\u00f4ng th\u00edch \u1ee9ng v\u1edbi chuy\u00ean ng\u00e0nh nha khoa c\u0169ng nh\u01b0 v\u1ea5n \u0111\u1ec1 sinh h\u1ecdc v\u00e0 v\u1ea5n \u0111\u1ec1 th\u1ef1c d\u1ee5ng. M\u1eb7c d\u00f9 hi\u1ec7n nay ch\u01b0a c\u00f3 v\u1eadt li\u1ec7u tr\u00e1m l\u00fd t\u01b0\u1edfng, nh\u01b0ng Grosman \u0111\u00e3 ch\u1ec9 ra nh\u1eefng y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi m\u1ed9t v\u1eadt li\u1ec7u tr\u00e1m \u1ed1ng tu\u1ef7 l\u00fd t\u01b0\u1edfng.<\/p>\n

\u2013 D\u1ec5 \u0111\u01b0a v\u00e0o v\u1edbi th\u1eddi gian l\u00e0m vi\u1ec7c tho\u1ea3i m\u00e1i.<\/p>\n

\u2013 C\u1ea3n quang v\u00e0 d\u1ec5 nh\u00ecn tr\u00ean phim Xquang.<\/p>\n

\u2013 \u1ed4n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc, kh\u00f4ng b\u1ecb co khi tr\u00e1m<\/p>\n

\u2013 B\u1ecbt k\u00edn \u0111\u01b0\u1ee3c ch\u00f3p r\u0103ng v\u00e0 m\u1eb7t b\u00ean \u1ed1ng tu\u1ef7, ph\u00f9 h\u1ee3p v\u1edbi gi\u1ea3i ph\u1eabu b\u00ean trong c\u1ee7a ch\u00fang.<\/p>\n

\u2013 Kh\u00f4ng th\u1ea5m, kh\u00f4ng b\u1ecb r\u00f2.<\/p>\n

\u2013 \u1ee8c ch\u1ebf vi khu\u1ea9n ph\u00e1t tri\u1ec3n.<\/p>\n

\u2013 Kh\u00f4ng k\u00edch th\u00edch m\u00f4 quanh ch\u00f3p.<\/p>\n

\u2013 Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi d\u1ecbch m\u00f4, kh\u00f4ng b\u1ecb m\u00f2n ho\u1eb7c oxy ho\u00e1.<\/p>\n

\u2013 Kh\u00f4ng l\u00e0m bi\u1ebfn m\u00e0u r\u0103ng.<\/p>\n

\u2013 D\u1ec5 l\u1ea5y ra khi c\u1ea7n thi\u1ebft.<\/p>\n

\u2013 V\u00f4 tr\u00f9ng.<\/p>\n

2. Ph\u00e2n lo\u1ea1i v\u1eadt li\u1ec7u tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7<\/h2>\n

C\u00f3 th\u1ec3 x\u1ebfp lo\u1ea1i v\u1eadt li\u1ec7u tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 nh\u01b0 sau:<\/p>\n

2.1. Lo\u1ea1i paste<\/h3>\n

Lo\u1ea1i n\u00e0y g\u1ed3m xi m\u0103ng ZnO eugenol v\u1edbi nhi\u1ec1u lo\u1ea1i th\u00eam v\u00e0o nh\u01b0: ZnO v\u00e0 resin t\u1ed5ng h\u1ee3p (Cavit), epoxy resin (Ah26), acrylic, polyethylene, polyvinyl \u0111\u01b0\u1ee3c d\u00f9ng nh\u01b0 m\u1ed9t ch\u1ea5t tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 \u0111\u01a1n thu\u1ea7n. Tuy nhi\u00ean, ph\u1ea7n nhi\u1ec1u d\u1ea1ng kem th\u01b0\u1eddng ti\u00eau ng\u00f3t v\u00e0 \u0111\u01b0\u1ee3c mang \u0111i b\u1edfi \u0111\u1ea1i th\u1ef1c b\u00e0o, d\u1eabn t\u1edbi vi\u1ec7c tr\u00e1m r\u1ed7ng, h\u1ed5ng t\u1ea1i 1\/3 ch\u00f3p. H\u01a1n n\u1eefa nh\u1eefng xi m\u0103ng tr\u00e1m b\u00edt d\u1ea1ng paste th\u01b0\u1eddng tr\u00e1m thi\u1ebfu h\u1ed5ng b\u1edfi l\u00fd do kh\u00f4ng th\u1ec3 nh\u1ed3i \u0111\u01b0\u1ee3c n\u00ean ph\u1ea3i d\u00f9ng c\u00e2y lentulo \u0111\u1ec3 \u0111\u01b0a xi m\u0103ng v\u00e0o \u1ed1ng tu\u1ef7. Vi\u1ec7c tr\u00e1m d\u01b0 c\u0169ng th\u01b0\u1eddng x\u1ea3y ra v\u00e0 c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng quan s\u00e1t \u0111\u01b0\u1ee3c qua phim tia X \u0111\u01b0a t\u1edbi nh\u1eefng h\u1eadu qu\u1ea3 nh\u01b0 vi\u00eam quanh ch\u00f3p, ti\u00eau ng\u00f3t ch\u00e2n r\u0103ng \u2013 x\u01b0\u01a1ng \u1ed5 r\u0103ng c\u0169ng nh\u01b0 \u0111au m\u1ea1n t\u00ednh. Ngo\u00e0i ra, c\u00e1c lo\u1ea1i xi m\u0103ng khi c\u1ee9ng r\u1ea5t kh\u00f3 l\u1ea5y \u0111i trong tr\u01b0\u1eddng h\u1ee3p ph\u1ea3i \u0111i\u1ec1u tr\u1ecb l\u1ea1i. Tuy nhi\u00ean, c\u0169ng c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng lo\u1ea1i xi m\u0103ng oxide k\u1ebdm \u2013 engenol n\u00e0y v\u1edbi \u0111i\u1ec1u ki\u1ec7n v\u1eadt li\u1ec7u c\u1ed1t l\u00f5i trong vi\u1ec7c tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 l\u00e0 guttapercha.<\/p>\n

2.2. Lo\u1ea1i b\u00e1n \u0111\u1eb7c<\/h3>\n

Nh\u1eefng c\u00f4n guttapercha \u0111\u01b0\u1ee3c x\u1ebfp v\u00e0o lo\u1ea1i n\u00e0y.<\/p>\n

2.3. Lo\u1ea1i \u0111\u1eb7c<\/h3>\n

Lo\u1ea1i n\u00e0y \u0111\u01b0\u1ee3c chia l\u00e0m hai lo\u1ea1i:<\/p>\n

– Lo\u1ea1i b\u00e1n c\u1ee9ng (d\u1ec5 u\u1ed1n \u0111\u01b0\u1ee3c) g\u1ed3m c\u00f2n b\u1ea1c hay d\u1ee5ng c\u1ee5 b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9. Tuy nhi\u00ean, ch\u00fang kh\u00f4ng tr\u00e1m \u0111\u01b0\u1ee3c \u1ed1ng tu\u1ef7 c\u00f3 h\u00ecnh d\u1ea1ng b\u1ea5t th\u01b0\u1eddng v\u00e0 c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n, t\u1ea1o n\u00ean s\u1ea3n ph\u1ea9m g\u00e2y \u0111\u1ed9c t\u1ebf b\u00e0o. V\u00ec v\u1eady, ng\u00e0y nay kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng n\u1eefa. Lo\u1ea1i n\u00e0y c\u00f3 th\u1ec3 b\u1ebb cong \u0111\u1ec3 th\u00edch h\u1ee3p v\u1edbi chi\u1ec1u cong c\u1ee7a \u1ed1ng tu\u1ef7.<\/p>\n

– Lo\u1ea1i c\u1ee9ng:<\/p>\n

+ Vitalium v\u00e0 chrome cobalt \u0111\u1ec3 l\u00e0m implant th\u00ec c\u1ee9ng kh\u00f4ng u\u1ed1n \u0111\u01b0\u1ee3c nh\u01b0 lo\u1ea1i tr\u00ean. Lo\u1ea1i n\u00e0y d\u00f9ng \u0111\u1ec3 c\u1eafm gh\u00e9p n\u1ed9i nha hay \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng cho v\u1eefng nh\u1eefng tr\u01b0\u1eddng h\u1ee3p g\u00e3y ch\u00e2n r\u0103ng, ch\u00e2n r\u0103ng b\u1ecb ti\u00eau.<\/p>\n

+ Amalgam b\u1ea1c: Tr\u01b0\u1edbc \u0111\u00e2y \u0111\u01b0\u1ee3c d\u00f9ng r\u1ed9ng r\u00e3i, trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u1ed9i ti\u00eau, ngo\u1ea1i ti\u00eau hay th\u1ee7ng ch\u00e2n r\u0103ng ho\u1eb7c \u0111\u1ec3 tr\u0103m ng\u01b0\u1ee3c v\u00e0 c\u00e1c \u1ed1ng tu\u1ef7 ph\u1ee5 l\u1edbn. Hi\u1ec7n nay \u00edt d\u00f9ng.<\/p>\n

+ IRM v\u00e0 super EBA l\u00e0 ch\u1ea5t tr\u00e1m c\u00f3 t\u00ednh t\u01b0\u01a1ng h\u1ee3p t\u1ed1t coi nh\u01b0 lo\u1ea1i xi m\u0103ng tr\u00e1m ng\u01b0\u1ee3c trong ph\u1eabu thu\u1eadt n\u1ed9i nha ho\u1eb7c \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh l\u00e0m v\u1eadt li\u1ec7u tr\u00e1m khi r\u0103ng ch\u01b0a \u0111\u00f3ng k\u00edn cu\u1ed1ng. Ion Calci gi\u1ea3i ph\u00f3ng t\u1eeb MTA, ph\u1ea3n \u1ee9ng v\u1edbi phosphat trong d\u1ecbch m\u00f4 t\u1ed5ng h\u1ee3p t\u1ea1o ra hydroxyl apatit. MTA v\u00f4 khu\u1ea9n, t\u01b0\u01a1ng h\u1ee3p sinh h\u1ecdc v\u00e0 c\u00f3 th\u1ec3 g\u00e2y h\u00ecnh th\u00e0nh m\u00f4 r\u1eafn. V\u1eadt li\u1ec7u n\u00e0y \u0111\u00f4ng c\u1ee9ng trong v\u00f9ng l\u1ed7 cu\u1ed1ng v\u00e0 cho ph\u00e9p \u0111\u01b0a guttapercha v\u00e0o m\u00e0 kh\u00f4ng s\u1ee3 b\u1ecb \u0111\u1ea9y ra ngo\u00e0i cu\u1ed1ng. K\u1ef9 thu\u1eadt n\u00e0y nhanh, th\u00e0nh c\u00f4ng tr\u00ean l\u00e2m s\u00e0ng, b\u1ec7nh nh\u00e2n kh\u00f4ng ph\u1ea3i \u0111i l\u1ea1i nhi\u1ec1u l\u1ea7n v\u00e0 kh\u00f4ng b\u1ecb t\u00e1i nhi\u1ec5m.<\/p>\n

2.4. Xi m\u0103ng sealer<\/h3>\n

Xi m\u0103ng sealer \u0111\u01b0\u1ee3c d\u00f9ng trong vi\u1ec7c tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 v\u1edbi nh\u1eefng cone b\u00e1n \u0111\u1eb7c, \u0111\u1eb7c hay c\u1ee9ng, c\u00f3 t\u00ednh n\u1ed1i d\u00ednh gi\u1eef c\u00e1c c\u00e2y c\u00f4n v\u00e0 th\u00e0nh \u1ed1ng tu\u1ef7, l\u00e0m tr\u01a1n v\u00e0 gi\u00fap cho c\u00e1c c\u00e2y c\u00f4n y\u00ean v\u1ecb. N\u00f3 c\u0169ng c\u00f3 nhi\u1ec7m v\u1ee5 tr\u00e1m b\u00edt c\u00e1c \u1ed1ng tu\u1ef7 ph\u1ee5 v\u00e0 c\u00e1c l\u1ed7 ch\u00f3p (foramen). M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u m\u1edbi d\u1ef1a tr\u00ean k\u1ef9 thu\u1eadt g\u1eafn dentin (\u1ed1ng ng\u00e0) nh\u1eb1m n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng tr\u0103m \u1ed1ng tu\u1ef7 v\u00e0 l\u00e0m m\u1ea1nh cu\u1ed1ng r\u0103ng.<\/p>\n

a) M\u1ed9t s\u1ed1 xi m\u0103ng d\u00f9ng \u0111\u1ec3 tr\u00e1m b\u00edt:<\/p>\n

SEALER GROSSMAN: Lo\u1ea1i n\u00e0y \u0111\u01b0\u1ee3c d\u00f9ng r\u1ed9ng r\u00e3i v\u00e0 \u0111\u00e1p \u1ee9ng \u0111\u00f2i h\u1ecfi cho m\u1ed9t sealer l\u00fd t\u01b0\u1edfng, v\u1edbi s\u1ef1 k\u00edch th\u00edch t\u1ed1i thi\u1ec3u v\u00e0 c\u00f3 t\u00ednh kh\u00e1ng khu\u1ea9n cao.<\/p>\n

\u2013 Th\u00e0nh ph\u1ea7n:<\/p>\n

+ B\u1ed9t:<\/p>\n

ZnO: 42%<\/p>\n

Staybelite resin : 27%<\/p>\n

Bismuth subcarbonate: 15%<\/p>\n

Barium Sulfate: 15%<\/p>\n

Sodium borate anhydrons: 1%<\/p>\n

N\u01b0\u1edbc eugenol<\/p>\n

+ AH26: \u0110\u00f3 l\u00e0 epoxy resin v\u1edbi \u0111\u1ed9 ho\u00e0 tan ch\u1eadm, th\u00e0nh ph\u1ea7n:<\/p>\n

B\u1ea1c \u1edf d\u1ea1ng b\u1ed9t: 10%<\/p>\n

Bisimuth trioxide: 60%<\/p>\n

Titanium dioxide: 5%<\/p>\n

Hexamethy lene tetramine: 25%<\/p>\n

N\u01b0\u1edbc: Bisphenol diglycidyl ether: 100%<\/p>\n

T\u00ednh d\u00ednh cao, t\u00ednh ch\u1ed1ng khu\u1ea9n, \u00edt \u0111\u1ed9c h\u1ea1i v\u00e0 ch\u1ea5p nh\u1eadn t\u1ed1t \u0111\u1ed1i v\u1edbi m\u00f4 quanh ch\u00f3p.<\/p>\n

So\u1ea1n ph\u1ea7n xi m\u0103ng tr\u00e1m:<\/em> Ng\u01b0\u1eddi ta d\u00f9ng m\u1ed9t t\u1ea5m k\u00ednh v\u00e0 m\u1ed9t c\u00e2y tr\u1ed9n kh\u1eed tr\u00f9ng. Kh\u00f4ng n\u00ean d\u00f9ng qu\u00e1 ba gi\u1ecdt n\u01b0\u1edbc cho m\u1ed7i l\u1ea7n tr\u00e1m. C\u00f3 2 test \u0111\u1ec3 th\u1eed \u0111\u1ed9 qu\u00e1nh \u0111\u1eb7c c\u1ee7a xi m\u0103ng.<\/p>\n

1. Test ch\u1ea3y xu\u1ed1ng (droptest): Gom xi m\u0103ng tr\u00ean c\u00e2y tr\u1ed9n v\u00e0 nh\u1ea5c l\u00ean, xi m\u0103ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ea3y trong v\u00f2ng 10 \u0111\u1ebfn 12 gi\u00e2y. C\u00f3 th\u1ec3 d\u00f9ng 1 tr\u00e2m s\u1ed1 25 \u0111\u01b0a nh\u00fang v\u00e0o kh\u1ed1i xi m\u0103ng v\u00e0 \u0111\u1ec3 th\u1eb3ng \u0111\u1ee9ng, xi m\u0103ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ea3y trong v\u00f2ng 10 gi\u00e2y.<\/p>\n

2. Test k\u00e9o d\u00e0i (String out test): gom xi m\u0103ng tr\u00ean c\u00e2y tr\u1ed9n v\u00e0 nh\u1ea5c l\u00ean t\u1eeb t\u1eeb, xi m\u0103ng s\u1ebd ch\u1ea3y d\u00e0i \u00edt nh\u1ea5t linch m\u00e0 kh\u00f4ng b\u1ecb \u0111\u1ee9t.<\/p>\n

3. V\u1eadt li\u1ec7u tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 – Guttapercha<\/h2>\n

\u0110\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn b\u1edfi Bowman t\u1eeb n\u0103m 1867 cho \u0111\u1ebfn nay, ch\u1ea5t n\u00e0y v\u1eabn \u0111\u01b0\u1ee3c d\u00f9ng r\u1ed9ng r\u00e3i \u0111\u1ec3 tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7, c\u00f3 t\u00ednh r\u1ea5t \u00edt \u0111\u1ed9c, \u00edt k\u00edch th\u00edch m\u00f4, \u00edt g\u00e2y d\u1ecb \u1ee9ng nh\u1ea5t. Guttapercha l\u00e0 m\u1ed9t ch\u1ea5t \u0111\u1ed3ng ph\u00e2n xuy\u00ean c\u1ee7a polyisopren t\u1ed3n t\u1ea1i d\u01b0\u1edbi 2 d\u1ea1ng k\u1ebft t\u1ec9nh (alpha v\u00e0 beta) c\u00f3 \u0111\u1eb7c t\u00ednh kh\u00e1c nhau.<\/p>\n

\"tram-bit-ong-tuy\"
So s\u00e1nh hai pha c\u1ee7a Guttapercha<\/figcaption><\/figure>\n

\u2013 Th\u00e0nh ph\u1ea7n c\u1ee7a cone guttapercha tu\u1ef3 thu\u1ed9c v\u00e0o nh\u00e0 s\u1ea3n xu\u1ea5t, c\u00f3 kho\u1ea3ng 20% guttapercha, 65% oxide k\u1ebdm 10% radiopacifin, 5% ch\u1ea5t l\u00e0m m\u1ec1m d\u1ebbo \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac d\u01b0\u1edbi 2 d\u1ea1ng:<\/p>\n

+ Lo\u1ea1i chu\u1ea9n: c\u00f3 s\u1ed1 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi s\u1ed1 c\u00e1c c\u00e2y tr\u00e2m d\u00f9ng \u0111\u1ec3 s\u1eeda so\u1ea1n \u1ed1ng t\u1ee7y, th\u01b0\u1eddng l\u00e0m cone ch\u00ednh (c\u00e2y cone \u0111\u1ea7u ti\u00ean).<\/p>\n

+ Lo\u1ea1i kh\u00f4ng chu\u1ea9n: th\u01b0\u1eddng \u0111\u1ea7u nh\u1ecdn, d\u00f9ng l\u00e0m cone ph\u1ee5 trong ph\u01b0\u01a1ng ph\u00e1p l\u00ean ngang, l\u00ean d\u1ecdc.<\/p>\n

\u2013 Guttapercha \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m v\u1eadt li\u1ec7u tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n

+ \u1ede nh\u1eefng r\u0103ng \u0111\u00f2i h\u1ecfi d\u00f9ng ch\u1ed1t \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng vi\u1ec7c t\u00e1i t\u1ea1o l\u1ea1i th\u00e2n r\u0103ng b\u1ecb v\u1ee1 qu\u00e1 l\u1edbn.<\/p>\n

+ \u1ede nh\u1eefng r\u0103ng tr\u01b0\u1edbc \u0111\u00f2i h\u1ecfi t\u1ea9y tr\u1eafng v\u00e0 s\u1ebd th\u1ef1c hi\u1ec7n vi\u1ec7c c\u1eaft ch\u00f3p.<\/p>\n

+ \u1ede nh\u1eefng tr\u01b0\u1eddng h\u1ee3p v\u00e1ch tu\u1ef7 kh\u00f4ng \u0111\u1ec1u \u0111\u1eb7n hay \u1ed1ng tu\u1ef7 kh\u00f4ng tr\u00f2n (oval, h\u1ea1t \u0111\u1eadu, d\u1eb9t d\u00e0i) b\u1edfi gi\u1ea3i ph\u1eabu hay do s\u1ef1 s\u1eeda so\u1ea1n.<\/p>\n

+ Khi c\u00f3 c\u00e1c \u1ed1ng tu\u1ef7 ph\u1ee5, \u1ed1ng tu\u1ef7 b\u00ean hay khi c\u00f3 nhi\u1ec1u l\u1ed7 ch\u00f3p (v\u00f9ng tam gi\u00e1c).<\/p>\n

+ Khi c\u00f3 \u1ed1ng tu\u1ef7 qu\u00e1 l\u1edbn, ta c\u00f3 th\u1ec3 d\u00f9ng c\u00e1c c\u00e2y guttapercha c\u00f3 s\u1eb5n cu\u1ed9n l\u1ea1i v\u1edbi nhau \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e2y cone l\u1edbn th\u00edch h\u1ee3p.<\/p>\n

Ngo\u00e0i ra, c\u00f2n c\u00f3 chloropercha v\u00e0 cucapercha: \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi G.P tan trong dung m\u00f4i chloroform v\u00e0 eucalyptol d\u00f9ng \u0111\u1ec3 tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 cong kh\u00f4ng b\u00ecnh th\u01b0\u1eddng hay tr\u01b0\u1eddng h\u1ee3p th\u1ee7ng ho\u1eb7c c\u00f3 kh\u1ea5c trong \u1ed1ng tu\u1ef7.<\/p>\n

* \u01afu \u0111i\u1ec3m:<\/p>\n

– C\u00f3 m\u1ed9t s\u1ef1 th\u00edch h\u1ee3p ho\u00e0n h\u1ea3o cho nh\u1eefng \u1ed1ng tu\u1ef7 hay v\u00e1ch tu\u1ef7 kh\u00f4ng \u0111\u1ec1u b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p l\u00e8n ngang hay l\u00e8n \u0111\u1ecdc.<\/p>\n

– C\u00f3 th\u1ec3 l\u00e0m m\u1ec1m v\u00e0 tr\u1edf n\u00ean d\u1ebbo b\u1edfi nhi\u1ec7t \u0111\u1ed9 hay dung m\u00f4i.<\/p>\n

– L\u00e0 m\u1ed9t ch\u1ea5t tr\u01a1, kh\u00f4ng ho\u00e0 tan trong n\u01b0\u1edbc.<\/p>\n

– C\u00f3 k\u00edch th\u01b0\u1edbc \u1ed5n \u0111\u1ecbnh.<\/p>\n

– Th\u00edch h\u1ee3p v\u1edbi m\u00f4. Sau khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00f4ng sinh ra ch\u1ea5t n\u00e0o c\u00f3 th\u1ec3 g\u00e2y \u0111\u1ed9c h\u1ea1i cho m\u00f4, t\u1ebf b\u00e0o.<\/p>\n

– Kh\u00f4ng l\u00e0m \u0111\u1ed5i m\u00e0u r\u0103ng.<\/p>\n

– C\u00f3 t\u00ednh c\u1ea3n quang.<\/p>\n

– D\u1ec5 l\u1ea5y \u0111i khi c\u1ea7n.<\/p>\n

* Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/p>\n

– Thi\u1ebfu s\u1ef1 c\u1ee9ng ch\u1eafc, nh\u1eefng c\u00e2y cone nh\u1ecf nh\u1ea5t th\u00ec kh\u00f3 d\u00f9ng tr\u1eeb tr\u01b0\u1eddng h\u1ee3p nh\u1eefng c\u00e2y cone l\u1edbn h\u01a1n s\u1ed1 30.<\/p>\n

– Thi\u1ebfu t\u00ednh d\u00ednh: guttapercha kh\u00f4ng d\u00ednh v\u00e0o th\u00e0nh \u1ed1ng tu\u1ef7 \u0111\u01b0\u1ee3c n\u00ean \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 sealer.<\/p>\n

– Guttapercha (G.P) c\u00f3 th\u1ec3 x\u00ea d\u1ecbch m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng v\u00e0 c\u00f3 th\u1ec3 k\u00e9o d\u00e0i \u0111\u01b0\u1ee3c. B\u1edfi t\u00ednh ch\u1ea5t n\u00e0y n\u00ean d\u1ec5 tr\u00e1m d\u01b0 trong qu\u00e1 tr\u00ecnh nh\u1ed3i \u00e9p, cho n\u00ean khi tr\u00e1m guttapercha \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 m\u1ed9t n\u00fat ch\u1eb7n n\u01a1i ch\u00f3p, n\u01a1i giao \u0111i\u1ec3m c\u1ee7a cement \u2013 ng\u00e0 r\u0103ng (ch\u1ed7 th\u1eaft ch\u00f3p) \u0111\u1ec3 tr\u00e1nh tai n\u1ea1n tr\u00ean.<\/p>\n

Ngu\u1ed3n: Ch\u1eefa r\u0103ng v\u00e0 n\u1ed9i nha t\u1eadp 2 – NXB Gi\u00e1o d\u1ee5c Vi\u1ec7t Nam<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Tr\u00e1m b\u00edt h\u1ec7 th\u1ed1ng \u1ed1ng tu\u1ef7 nh\u1eb1m m\u1ee5c \u0111\u00edch b\u00edt k\u00edn v\u00e0 ch\u1eb7t kho\u1ea3ng tr\u1ed1ng trong \u1ed1ng tu\u1ef7 t\u1edbi v\u00f9ng ti\u1ebfp x\u00fac ng\u00e0 – cement k\u1ec3 c\u1ea3 c\u00e1c \u1ed1ng tu\u1ef7 ph\u1ee5 b\u1eb1ng ch\u1ea5t tr\u01a1, k\u00edch th\u01b0\u1edbc c\u1ed5 \u0111\u1ecbnh v\u00e0 t\u01b0\u01a1ng h\u1ee3p sinh h\u1ecdc. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed5ng quan c\u00e1c lo\u1ea1i v\u1eadt […]<\/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":"\nTr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 - T\u1ed5ng quan v\u1eadt li\u1ec7u. - Vinmec<\/title>\n<meta name=\"description\" content=\"B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed5ng quan c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 th\u01b0\u1eddng quy, \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u00fang.\" \/>\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=\"Tr\u00e1m b\u00edt \u1ed1ng tu\u1ef7 - 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