diplomsko delo
Nina Pondrk (Author), Peter Bohinc (Reviewer), Igor Kopač (Mentor), Franc Rojko (Co-mentor)

Abstract

Uvod: Vijačene nadgradnje na zobnih vsadkih so v današnjem času vse pogostejši način implantnoprotetične oskrbe pacientov. Izdelava tovrstnih nadgradenj je za zobne tehnike, laboratorijske zobne protetike in zobozdravnike pomembno strokovno področje. Ker je oskrba z zobnimi vsadki v dentalni medicini vse pogostejša, se hitro razvijajo tudi različne tehnike izdelave nadgradenj. Litijeva disilikatna monolitna krona na zobnem vsadku spada med novejše tehnike izdelave nadgradenj in je zato še toliko zanimivejša, prav tako je novejši material pri zobnih vsadkih litijev disilikat. Namen: Namen diplomskega dela je predstaviti izdelavo litijevega disilikatnega opornika in prevleke s tehnologijo CAD/CAM ter litijeve disilikatne monolitne krone s slojenjem keramike. Namen dela je tudi utemeljiti, kdaj se odločimo za določen način, kateri pogoji morajo biti izpolnjeni, opredeliti razlike v izdelavi, prednosti in slabosti obeh načinov ter predstaviti litijev disilikat kot material za protetično oskrbo na vsadkih. Metode dela: Metode dela vključujejo pregled domače in tuje literature ter raziskav, povezanih z zobnimi vsadki, tehnologijo CAD/CAM in restavracijami iz litijeve disilikatne keramike. Rezultati: Študija, ki je analizirala lomno žilavost različnih materialov, je pokazala prednosti litijevega disilikata kot monolitne krone na zobnem vsadku. Prav tako je raziskava pokazala, da ima litijev disilikat dobre lastnosti v odnosu z epitelijskim tkivom, rezultati so bili boljši kot pri cirkonijevem oksidu in titanu. Videz je pri obeh načinih primerljivo dober, razen če je kompozitna zapora na mestu, kjer estetsko moti. V tem primeru je primernejši opornik s prevleko. V prid monolitni kroni kažejo izsledki raziskav, ker pri tovrstni oskrbi ni ostankov cementa, ki vodijo v periimplantitis. Olajšan je dostop do vijaka, če so pozneje potrebni kakršni koli popravki nadgradnje. S tehnologijo CAD/CAM je izdelava postala preprosta, kar za klasični način ne moremo trditi. Razprava in sklep: Z današnjimi tehnologijami CAD/CAM lahko dosežemo ustrezno natančnost vijačenih konstrukcij, z različnimi materiali in na različne načine. V nalogi opisujemo dva načina izdelave, ki imata vsak svoje prednosti in slabosti.

Keywords

diplomska dela;laboratorijska zobna protetika;CAD/CAM;litijev disilikat;vijačena;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL ZF - University College of Health Studies
Publisher: [N. Pondrk]
UDC: 617.3
COBISS: 69184515 Link will open in a new window
Views: 391
Downloads: 56
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Other data

Secondary language: English
Secondary title: Screw retained lithium disilicate ceramic restorations on dental implants, fabricated with CAD/CAM technology
Secondary abstract: Introduction: Fixed screw-retained implant dental prostheses are becoming a preferred and frequently used approach for implant-prosthetic rehabilitation. Manufacturing procedure of this kind of suprastructures is an important field of expertise for dental technicians, laboratory dental prosthetics and dentists. As implant-based rehabilitation dentistry is becoming a trending option for tooth replacement, various techniques for making suprastructures have also seen rapid development. Lithium disilicate monolithic crown on a dental implant is one of the newer techniques in the production of suprastructures and as such an interesting topic for discussion. At the same time, lithium disilicate is a relatively new material also in the field of implant dentistry. Aim: the purpose of this paper is to present manufacturing methods of lithium disilicate implant abutment and crown with CAD/CAM technology and lithium disilicate monolithic crown with layering ceramics. Additionally, we wish to clarify when and under what conditions one method should be chosen over the other, the differences in manufacturing and the advantages and disadvantages of both methods, as with a view to present lithium disilicate as an appropriate material for implant prosthetic rehabilitation. Methods: A review of the available literature was conducted, including a research regarding dental implants, CAD/CAM technology and lithium disilicate suprastructures. Results: A study analyzing fracture toughness of various materials exhibited an important advantage of lithium disilicate as a material for monolithic implant crown. Moreover, in this study lithium disilicate was proven to have good properties in relation to epithelial tissue, producing better results than both zirconium oxide and titanium. Aesthetics are have shown to be equally good with both methods, unless the composite seal is in the esthetic zone. In this case abutment with cemented crown is more appropriate. Research conclusions show cement residues lead to periimplantitis which is another advantage of the monolithic crown. Additionally with easy access to the screw the crown is retrievable in need of any repairs or complications. Manufacturing this kind of suprastructures turned out to be uncomplicated, which cannot be said for the standard way. Discussion and conclusion: Today's CAD/CAM technologies allow for appropriate precision of screw-retained suprastructures using different materials and techniques. In this paper, we discuss two manufacturing methods with their advantages and disadvantages.
Secondary keywords: diploma theses;laboratory dental prosthetics;CAD/CAM;lithium disilicate;screw-retained;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Zdravstvena fak., Oddelek za laboratorijsko zobno protetiko
Pages: 40 str., [1] f. pril.
ID: 13099779