Shanduro dzenheyo dzinonzi zvivako zvisingaitiki, zvinoshandiswa kugadzirisa kukanganisa kwevanhu kuruma. Izvo zviyero zvakakosha zvakagadzirirwa pameno eine glue chaiyo, uye zvino inosangana neArc ine "shape memory", ndiko kuti, inodzokera kune fomu yavo yepakutanga panguva yekupisa. Kuchinja mune maitiro emazino ari mumuromo wemuromo kunowanikwa kuburikidza nechisimba chekudzivirira chechigadziriswa. Makore gumi nemashanu apfuura, kusungira kwaiva chinhu chitsva uye kuziva, asi ikozvino chisarudzo chakanaka-simbi kana sarufa - pane chero mari.
Chii chinonzi sarfires mabhesi anoita sei?
Zvechokwadi, yekutanga mabhosi yakanga iri kure nekunakidza muchitarisiko. Mamiriyoni evanhu haana kushinga kururamisa kurohwa nenzira chaiyo nekuda kwehutsika hwakanaka. Zviuru zvevana zvakagadzirisa zvinetso zvakanyanya, zvichipedza makore akawanda ehutano hwakanyanya hwevechiri kuyaruka nemasuo ekudzivirira pameno avo. Asi, neropafadzo, mazinyo anoenda mberi achingosimuka uye zvipfeko uye mabhesi emazuva ano zvinogona kunge zvisingaoneki pameno.
Kunyanya kunakidzwa kwavo ndekwesafirosi. Nokuda kwekugadzirwa kwavo, makristasi asina kushandiswa emafirofiro anoshandiswa, semugumisiro, mashizha anenge ari pachena uye asingagamuchiri paanowedzerwa pameno. Unhu hwesafirisi-maitiro ndeaya anotevera:
- ivo vari pachena;
- Usasvibisa kana uchingodya zvokudya kana kuisa zvinwiwa;
- pamusoro pehupenyu hwayo hapana kuunganidza danda, izvo zvinoderedza ngozi yekugadziriswa kwemazino mazino akavharwa nehutu (kunyange, chokwadi, hazvidi kushandisa shandisi zvisina kunaka);
- high wear wear;
- usapindira nebasa rekutaura;
- usakonzera kushushikana mumuromo;
- zviduku, zvakagadzirwa zvakanaka, kumativi ose;
- nzira yakatendeseka yekutsanangurira kune enamel.
Izvo zvisingaoneki ndezvishongo zvesafiri ne white arc. Kazhinji, arc yokugadzirisa yakasviba, metallic uye, kunyange kana sarifisi yakasviba yakaiswa, inoonekwa pameno. Asi mazuva ano orthodontics inobatanidza mashizha akasiyana-siyana nemucheka wakaisvonaka wemucheka, izvo zvinoita kuti chigadzirwa chisati chisinganzwisisiki nguva dzose.
Kukanganisika kwebrasiti
Zvechokwadi, hapana chakakwana, uye sarfiro yakachena yakajeka, zvinosuruvarisa, zvakare. Dambudziko ravo guru nderokuti fragility. Saka, zvose zvakafanana, zvakakosha kuchenjerera panguva yekudya kwekudya uye kusashanda nesimba zvakanyanya kana uchinge uchinge uchidya zvokudya zvakasimba. Chechipiri kukosha kwehutano hwemasikirwo akadai mabhadharo awo akakwirira. Maiwe, sarfriine yakachena ye monocrystalline haisi kufara kunodhura. Asi zvimwe zvese zvinobatsira zvinoramba zvichiri kupfurikidza nekuiswa kwesafirosi.
Ndeapi mabhandi esafire achafanira kupfeka ndeyeimwe nyaya inokosha inoshungurudza munhu wose akafunga kururamisa kurohwa. Ikoko hakugoni kuva nemhinduro isina kufanirwa, zvose zvinotarisana nemamiriro ezvinhu echokwadi. Asi kazhinji nguva yekupfeka maesthetic marudzi
Kusiyanisa pakati pekramiki uye sarafire mabhesi
Misiyano yekutanga pakati pemamwe mabhidhiyo anozivikanwa zvikuru mukuonekwa. Bhandi yeCeramic yakachena, uye sarafire, sezvatave tatoona-pachena. Ceramic inoumbwa nepolycrystalline aluminium oxide, iyo inopa simba guru rekushongedza kwakadaro pakuenzanisa nesafire. Chimwe chinhu chakakosha ndiyo mutengo - ceramic inodhura kupfuura sapafiresi. Nokudaro mabhandi esafire anotarisa akanaka pane mamwe mazino akachena, vasati vashandisa, varwere vakawanda vanotorudzirwa kuti vaite mazino ekuchena . Bhandi rekeramic rinotarisa rakakura pane eamel chero mumvuri, nokuti mumvuri weeramikiti unogona kugadziriswa.