Monolitni keramički nadomjesci

master's thesis

• Title (english): Monolithic ceramic restorations
• Author: Dominik Pavić
• Mentor: Slađana Milardović Ortolan (mentor)
• Committee member: Slađana Milardović Ortolan (predsjednik povjerenstva)
• Committee member: Nikša Dulčić (član povjerenstva)
• Committee member: Lana Bergman (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; (Department of Fixed Prosthodontics); Zagreb
• Defense date and country: 2017-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Prosthetic Dentistry

Abstract

Kod dvoslojnih nadomjestaka obložna keramika vezana je za osnovnu konstrukciju građenu od druge vrste keramike ili metala. U praksi se pokazalo da je teško postići zadovoljavajuću veznu čvrstoću između dvaju slojeva pa se komplikacije očituju raslojavanjem nadomjestka ili lomom tanke i krhke obložne keramike. Te se komplikacije pokušavaju izbjeći izradom nadomjestaka u jednom komadu. Monolitni keramički nadomjesci jednokomadni su nadomjesci izrađeni od jedne vrste materijala. Glavna prednost im je kompaktnost i samim time otpornost djelovanju žvačnih sila.
Najčešće primjenjivane keramike u monolitnom obliku su litij-disilikatna i cirkonij-oksidna. Litij-disilikatna keramika odlikuje se izvrsnim optičkim svojstvima koja omogućuju oponašanje prirodne boje i translucencije zuba zbog čega je prvenstveno indicirana za estetsku zonu. Cirkonijev oksid ima bolja mehanička svojstva kao što su tvrdoća, savojna čvrstoća i otpornost na lom, ali lošija optička svojstva u odnosu na litij-disilikatnu keramiku, stoga se još uvijek češće koristi na stražnjim zubima. Međutim, u novije su se vrijeme pojavile cirkonij-oksidne keramike povećanog stupnja translucencije čime se dodatno povećavaju mogućnosti njihove primjene. Daljnim razvojem suvremenih keramičkih materijala očekuje se dodatno povećavanje opsega indikacija za monoline nadomjestke.

Abstract (english)

In bilayered restorations a core structure made of metal or ceramics is covered with a veneer ceramic. Clinical experience has shown that it is difficult to achieve the desired bond strength between the two layers, therefore, complications such as chipping or fracture of the thin and fragile ceramic layer is a common complication. These complications are tried to be avoided by introduciong one-piece, i.e. monolithic restorations. Monolithic ceramic restorations are made of only one type of material. Their main advantage is compactness, and thus high resistance to bite forces.
The most commonly used types of ceramic materials for monolithic restorations are lithium disilicate and zircononium-oxide. Lithium-disilicate has great optical properties which can mimic natural tooth colour and translucency, and therefore it is primarily indicated in the esthetic zone. Zirconium-oxide has outstanding mechanical properties, such as hardness, flexure strenght and fracture restistance, but inferior optical properties in comparison to lithium-disilicate, and therefore it is mainly used in the posterior area. However, nowadays zirconium-oxide ceramics with a higher translucency level have been introduced, which opens new possibilities for their use. Further development of ceramic materials is expected to further broaden the indications for monolithic ceramic restorations.

• Keywords: monolitni keramički nadomjesci; dvoslojni keramički nadomjesci; cirkonijoksidna keramika; litij-disilikatna keramika
• Keywords (english): monolithic ceramic restorations; bilayered ceramic restorations; zirconium-oxide ceramics; lithium-disilicate ceramics
• Language: croatian
• URN:NBN: urn:nbn:hr:127:933493
• 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: 2018-01-17 12:44:44