{"id":14,"date":"2024-04-03T23:10:22","date_gmt":"2024-04-03T20:10:22","guid":{"rendered":"https:\/\/sisu.ut.ee\/hambaravi2\/22-klaasionomeertsement\/"},"modified":"2024-04-09T13:43:08","modified_gmt":"2024-04-09T10:43:08","slug":"22-klaasionomeertsement","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/hambaravi2\/22-klaasionomeertsement\/","title":{"rendered":"2.2. Klaasionomeertsement"},"content":{"rendered":"<p>Klaasionomeertsement on \u00fcks t\u00e4idismaterjali liikidest, mida <strong style=\"line-height: 1.6em;\">kasutatakse<\/strong> enamasti piimahammaste ning hambakaela piirkonnas asetsevate kaarieskahjustuste raviks. Samuti aluskihina s\u00fcgavamates kaviteetides, isoleerimaks pulpi t\u00e4idismaterjalist.<\/p>\n<p>Klaaasionomeert\u00e4idis on <strong>koes\u00f5bralik, dentiiniga h\u00e4sti \u00fchilduv<\/strong> materjal. Tema puudusteks on <strong>rabedus ja kiire kulumine<\/strong>. Seet\u00f5ttu ei sobi seda kasutada m\u00e4lumispindadel. Enamasti on materjali v\u00e4rvivalik piiratud ja seda ei kasutata esihammaste n\u00e4htavatel pindadel.<\/p>\n<p>Klaasionomeertsement on <strong>pol\u00fcakr\u00fclaattsementide r\u00fchma tuntuim esindaja<\/strong>. Adhesiivsete s\u00fcsteemide kasutamine tsementidena sai alguse alles 1970ndatest aastatest, mil materjali arendamist alustas dr D.S.Smith Manchasterist. Pol\u00fcakr\u00fclaattsementide eelis on <strong>hea adhesioon<\/strong>, seda nii emaili kui dentiiniga ning isegi metallidega.<\/p>\n<p>Klaasionomeertsement arendati v\u00e4lja oma eelk\u00e4iiate baasil, otsides materjali, millel oleks madalam toksilisus, hea adhesiivsus ja eeshammaste taastamiseks sobiv esteetilisus.<\/p>\n<p>Klaasionomeertsemente v\u00f5ib <strong>kasutamise alusel <\/strong>jaotada kolmeks:<\/p>\n<ul>\n<li>Sidusmaterjalid<\/li>\n<li>T\u00e4idismaterjalid<\/li>\n<li>Materjalid kaviteedi t\u00f6\u00f6tlemiseks ja silandid<\/li>\n<\/ul>\n<p>Materjali <strong>k\u00f5vastumine toimub keemiliselt<\/strong>, happe-alus reaktsioonil, mis kliiniliselt on oluline <strong>l\u00fchiajalise pulbikoe \u00e4rrituse<\/strong> l\u00e4bi. Sidusainetes on klaasiosakesed v\u00e4ikese l\u00e4bim\u00f5\u00f5duga, et v\u00f5imaldada \u00f5hukese tsemendikihi teket. Pulbi\u00e4rrituse v\u00e4hendamiseks ei soovitata tsementeerimisel avaldada <strong>liigset survet<\/strong>, mille tagaj\u00e4rjel tsement dentiinikanalitesse surutakse.<\/p>\n<p>Klaasionomeersed t\u00e4idismaterjalid ei ole v\u00f5rreldavad komposiitmaterjalide esteetikaga ja seet\u00f5ttu ei sobi nad suurte, n\u00e4htavate emailipindade taastamiseks. Kuna tegemist on keemiliselt k\u00f5vastuva materjalidega, tuleb kogu kasutatav restauratiivne <strong>materjal viia kaviteeti \u00fche korraga<\/strong> ja koheselt vormida. L\u00f5plik <strong>pinnaviimistlus <\/strong>tehakse <strong>\u00f6\u00f6p\u00e4ev hiljem<\/strong>, peale materjali l\u00f5plikku k\u00f5vastumist.<\/p>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69e0a0240da6a-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69e0a0240da6a-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69e0a0240da6a-collapse\">Milline on erinevus tsemendi ja adhesiivi vahel?\u00a0<\/button>\n        <\/h2>\n        <div id=\"accordion-69e0a0240da6a-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69e0a0240da6a-heading\">\n            <div class=\"accordion-body\">Erinevus on toimemehhanismis. Tsement annab mehhaanilise retentsiooni. Adhesiivid, nagu nimigi \u00fctleb, kasutavad \u00e4ra adhesiooni ehk molekulaarj\u00f5ududest tulenevat seostumist. See m\u00e4\u00e4rab ka n\u00f5uded pindadele. Tsemendiga seostatavad pinnad peavad olema karedad, v\u00f5imaldades mehhaanilist seostumist; parim adhesioon saadakse aga siledate pindade puhul.<\/div>\n        <\/div>\n        <\/div>\n    <\/div> <div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69e0a0240da70-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69e0a0240da70-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69e0a0240da70-collapse\">Loe lisaks!<\/button>\n        <\/h2>\n        <div id=\"accordion-69e0a0240da70-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69e0a0240da70-heading\">\n            <div class=\"accordion-body\">Huvi korral loe klaasionomeertsementide keemilisest koostisest ja omadustest p\u00f5hjalikumalt t\u00f5lkeartiklist \u201cHambaravis kasutatavad tsemendid\u201d (<a href=\"http:\/\/www.hambaarst.ee\/artiklid\/359\/\" target=\"_blank\" rel=\"noopener\">http:\/\/www.hambaarst.ee\/artiklid\/359\/<\/a>)<\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Klaasionomeertsement on \u00fcks t\u00e4idismaterjali liikidest, mida kasutatakse enamasti piimahammaste ning hambakaela piirkonnas asetsevate kaarieskahjustuste raviks. Samuti aluskihina s\u00fcgavamates kaviteetides, isoleerimaks pulpi t\u00e4idismaterjalist. Klaaasionomeert\u00e4idis on koes\u00f5bralik, dentiiniga h\u00e4sti \u00fchilduv materjal. Tema puudusteks on rabedus ja kiire kulumine. Seet\u00f5ttu ei sobi seda &#8230;<\/p>\n","protected":false},"author":12,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-14","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/pages\/14","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/comments?post=14"}],"version-history":[{"count":3,"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/pages\/14\/revisions"}],"predecessor-version":[{"id":108,"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/pages\/14\/revisions\/108"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/hambaravi2\/wp-json\/wp\/v2\/media?parent=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}