Staklenoionomerni cementi - svojstva i primjena

master's thesis

• Title (english): Glassionomer cements – properties and application
• Author: Ante Miličević
• Mentor: Domagoj Glavina (mentor)
• Committee member: Domagoj Glavina (predsjednik povjerenstva)
• Committee member: Martina Majstorović (član povjerenstva)
• Committee member: Ketij Mehulić (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; (Department of Paediatric and Preventive Dentistry); Zagreb
• Defense date and country: 2017-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Children's and Preventive Dental Medicine

Abstract

Staklenoionomerni cementi su dvokomponentni sustavi čiju osnovu čine prah i tekućina. Prah sadrži čestice kalcijsko-aluminijskog fluorosilikatnog stakla, a tekućina se sastoji od 35 – 65 postotne otopine kopolimera poliakrilne kiseline i vode (H2O). Za tvrda zubna tkiva vežu se kemijski mehanizmima ionske izmjene, što ih svrstava u biološki aktivne materijale. Reakcija stvrdnjavanja staklenoionomernih cemenata naziva se acidobaznom reakcijom. Zbog svojih pozitivnih karakteristika imaju široku primjenu u kliničkoj stomatologiji. Primjenjuju se kao restorativni i adhezivni materijali zbog: adhezivnog vezanja na tvrda zubna tkiva, antikarijesnog učinka koji postižu otpuštanjem fluorida, biokompatibilinosti s tvrdim zubnim tkivima i niske toksičnosti. Također se koriste za cementiranje mostova, krunica, inleya i overleya, kao materijali za ispune i podloge ispuna te kao sredstva za pečaćenje fisura. Zbog slabije čvrstoće i niske otpornosti na abraziju limitirana je upotreba SIC-a u područjima visokog stresa. Stoga se u lateralnim područjima najčešće upotrebljavaju kao privremeni ispuni. Otpuštanjem fluorida reduciraju i zaustavljaju procese demineralizacije, a povećavaju procese remineralizacije. U suvremenoj literaturi opisano je nekoliko načina klasifikacije staklenoionomernih cemenata. To su: tradicionalna podjela SIC-a, podjela prema načinu primjene i podjela prema sastavu SIC-a.

Abstract (english)

Glass Ionomer Cements are two component systems whose base is made up of powder and liquid. The powder contains particles of calciumaluminofluorosilicate glass and the liquid is a 35-65% solution of copolymer polyalkenoic acid and water (H2O). They adhere to hard tooth tissue through mechanisms of ion-exchange which classifies them as bioactive materials. The setting of the glass-ionomer cements is called an acid-base reaction. Due to their positive characteristics they have wide applications in clinical dentistry. They are used as restorative and adhesive materials due to their adhesive bonding to hard tooth tissue, anticariogenic properties achieved through the release of fluoride, biocompatibility with hard tooth tissue and low toxicity. They are also used for cementing bridges, crowns, inlays and onlays, as well as material for fillings and bases and a fissure sealant. Due to fracture strength and lower resistance to abrasion the use of glass ionomer ements is limited in stress-bearing areas. In posterior dental regions glass ionomer cements are used as temporary fillings. The release of
fluoride reduces and prevents the processes of demineralization, and increases the processes of remineralization. In contemporary literature, several ways of classifying glass ionomer cements are used. These include: the traditional classification of GICs, classification
according to application and classification according to composition.

• Keywords: staklenoionomerni cement; fluoridi; acidobazna reakcija
• Keywords (english): glass ionomer cements; fluoride; acid-base reaction
• Language: croatian
• URN:NBN: urn:nbn:hr:127:745350
• Study programme: Title: dental medicine; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor/doktorica dentalne medicine (doktor/doktorica dentalne medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-01-16 13:19:37