Uas sau cov ntaub ntawv uas yog zoo tshaj plaws?

Yuav ua li cas tshem tawm cov hniav lwj? Qhov zoo tshaj plaws kev xaiv - yuav siv ib tug niaj hnub filling cov ntaub ntawv. Nyob rau hauv kev kho hniav, rau lub hom phiaj muaj ntau pab pawg ntawm cov fillers. Xaiv ntawm ib tug muaj pes tsawg leeg nyob ntawm ntau yam tseem ceeb: nws lub zog, kev ruaj ntseg rau lub cev, cov nqi ntawm. Qhia tus neeg mob mus pab cov nram qab no nyuag txheej txheem cej luam ntawm cov ntaub ntawv rau kev kho hniav.

Filling khoom muab faib mus rau hauv lub nram qab no:

1. Nyiaj hlau. Qhov no cov ntaub ntawv uas ua tau muaj poob nws txoj qub chaw, dhau caij nyoog, lately yuav luag tsis siv. Nws muaj mercury, uas yog ib co tshuaj lom vapors. Thoob plaws siv cov nyiaj nyob hauv cov hlau nyob rau hauv kev kho hniav yog vim ob peb zoo: lub dag zog, durability, siab antibacterial ntsuas uas tsis muaj nqi. Tseem ceeb tsis zoo: tsawg adhesion rau polishing ntsaws yuav tsum rov qab ua mus ntsib mus rau tus kws kho mob, tas, thiab tej zaum yuav tsaus ntuj secede hniav cov ntaub so ntswg toxicity xoob marginal foob.

2. Kho Hniav cements. Lug siv txog nees nkaum xyoo dhau los. Qhov zoo tshaj plaws filling cov ntaub ntawv uas los ntawm qhov no pab pawg neeg, uas yog tseem siv - iav ionomer xis mas. Muaj pes tsawg leeg: pob zeb ntais, txhuas, fluorine. Nws yog tov nrog distilled dej los yog polyacrylic acid (50% tshuaj).

Zoo:

- hardens sai sai - nyob rau hauv ib ob peb feeb;

- xaiv Fluoro, yeej txhawb lwm cov kev kho hniav daim ntawv so ntswg - muaj ib tug sib tov ftoralyumosilikata thiab polyacrylic acid (xws li ib tug foob yog kev tiv thaiv ntawm kev rov muaj dua ntawm caries, txawm li cas los lub khob ionomer MAAs yog indispensable rau kev kho mob ntawm thawj cov hniav);

- dej kuj - muaj peev xwm yuav siv tau raws li ib tug insulating hauv ob sab phlu, uas tiv thaiv tus hniav cov ntaub so ntswg los ntawm cov puas tsuaj ntawm txhoj puab heev;

- txawm - tsis thab plaub hauv lub sis plawv hniav;

- siab adhesion - yog tau khi nrog calcium nyuaj kho hniav cov ntaub so ntswg.

3. Cov composite filling cov ntaub ntawv. Qhov tseem nyob rau hauv coob nyob rau hauv xyoo tsis ntev los. Lub puas muaj ib tug organic matrix (hluavtaws cob) thiab ib tug inorganic muab tub lim (quartz hmoov). Rau cov kev kho mob ntawm posterior hniav khoom siv uas loj hais ntawm quartz, muab cov kev tsim nyog lub dag lub zog rau ib ntev lub sij hawm.

Qhov zoo ntawm composites:

- puas kuj;

- noj qab haus huv kev ruaj ntseg;

- siab zog;

- Tejzaum ntawm qhov kev siv;

- zoo tagnrho polishing;

- tau ntawm kev siv rau kev vam meej kho tshiab ntawm lub hauv pem hauv ntej cov hniav;

- siab aesthetic zog - maximizes sau cov ntaub ntawv uas xyaum tej yam ntuj tso xim, kev ntxhib los mos, transparency, i.e. cov nyhuv ntawm qhuav gloss;

- ib tug ntau yam.

Tau teeb meem:

- Neeg - txhaum tshwm sim thaum kev kho mob hom kev kawm, bookmarks siab koob tshuaj;

- sai erasure tsis yog tsis khaws sau cov ntaub ntawv uas, kuj puas yuav siv tsis tau rau cov kev kho mob ntawm cov neeg mob nrog nce puas ntawm txha hniav laus;

- hniav lwj, cleavage ntawm nws phab ntsa - yuav tsum tsis txhob muab siv los mus muab lub composite khoom siv ntawm lub crown ntawm ib tug hniav puas lawm los ntawm ntau tshaj 50%.

Yog li, cov kev xaiv ntawm ib tug muaj pes tsawg leeg cov ntsaws - MAAs, hlau los yog polymer -better ntseeg kws kho hniav. Nws yuav ntsuam xyuas tus mob ntawm cov hniav thiab cov muaj qhov zoo tshaj plaws kev xaiv rau ib tug neeg mob.