Usporedba preciznosti analognih i digitalnih otisaka u implantoprotetici

postgraduate specialist thesis

• Title (english): Comparsion of accuracy between analog and digital impressions in implant prosthetics
• Author: Ana Sandrić
• Mentor: Dubravka Knezović Zlatarić (mentor)
• Committee member: Andreja Carek (predsjednik povjerenstva)
• Committee member: Dubravka Knezović Zlatarić (član povjerenstva)
• Committee member: Maja Žagar (član povjerenstva)
• Committee member: Nikola Petričević (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; Zagreb
• Defense date and country: 2024-05-02, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine

Abstract

Kako bi se pacijenta uspješno opskrbilo protetskim radom koji će trajati dugi niz godina potrebno je osigurati pasivan dosjed protetske suprastrukture na implantat. Za to je potreban precizan otisak i radni model. Otisak u implantoprotetskoj terapiji služi točnom prijenosu trodimenzionalnoga položaja implantata i njegovu odnosu prema periimplantatnim mekim tkivima, ostalim zubima iste i suprotne čeljusti. Analogni otisci standardno se uzimaju polieterima ili silikonima, tehnikom otvorene ili zatvorene žlice. Digitalni otisak uzima se intraoralnim skenerom. Uz veću ugodu za pacijenta, digitalno otiskivanje ima za prednost
brzinu, mogućnost pohrane otiska, kao i olakšanu komunikaciju između ordinacije i laboratorija. Da bi se postigla maksimalna preciznost, važno je pažljivo odabrati metodu otiskivanja ovisno o specifičnim kliničkim slučajevima i uvjetima. Kombinacija analogne i digitalne metode može pružiti najbolje rezultate. Realnost i točnost najvažniji su faktori koji utječu na preciznost otiska. Pojam istinitost/realnost (engl. trueness) odnosi se na odstupanje skena površine objekta od realnoga objekta, a pojam točnosti (engl. accuracy) opisuje stupanj slaganja ponovljenih skenova. Kako bi ušli u široku kliničku uporabu, nužno je da digitalni otisci intraoralnim skenerima budu jednako precizni ili precizniji od otisaka dobivenih konvencionalnom tehnikom otiskivanja. Istraživanja pokazuju da na preciznost digitalnoga otiska utječe iskustvo operatera, brzina i tehnika skeniranja, broj implantata, odnosno prisutnost preostalih zuba ili raspon bezubih prostora te dizajn posebno dizajnirane
nadogradnje. Razumijevanjem svojstava i ograničenja materijala za otiske, tehnika korištenja i čimbenika koji utječu na izbor načina otiskivanja, kliničari mogu optimizirati točnost i pouzdanost otisaka, što dovodi do boljih ishoda za pacijente i unapređuje stomatološke protetike.

Abstract (english)

In order to successfully provide a patient with a prosthetic work that will last for many years, it is necessary to ensure a passive fit of the prosthetic superstructure on the implant. This requires an accurate impression. In implant prosthetics, impressions serve to accurately transfer the three­dimensional position of the implant and its relationship to the peri­implant soft tissues, other adjacent teeth, and the opposing jaw. Analog impressions are typically taken using polyethers or silicones, with either an open or closed tray technique. Digital impressions are obtained using an intraoral scanner. To achieve maximum precision, it is important to carefully select the impression­ taking method based on specific clinical cases and conditions. Accuracy and trueness are the two most important factors influencing impression precision. Trueness refers to the deviation of the scanned surface from the real object, while accuracy describes the closeness of repeated scans. In order to achieve widespread clinical use, it is necessary for intraoral scanner impressions to be as precise as, or at least equally precise as, impressions obtained using
conventional impression techniques. Research shows that the accuracy of digital impressions is influenced by the operator's experience, scanning speed and technique, the number of implants, the presence of remaining teeth, and the design of custom abutments. By understanding the properties and limitations of impression materials, the techniques used, and the factors influencing the choice of impression method, clinicians can optimize the accuracy and reliability of impressions, leading to better outcomes for patients and advancing dental prosthetics.

• Keywords: zubna proteza podržana implantatima; trodimenzionalni otisak; tehnike uzimanja otisaka; zubni implantat-nadogradnja; podešavanje
• Keywords (english): Dental Prosthesis; Implant Supported; Three-Dimensional Printing; Dental Impression Technique; Dental Implant-Abutment Design
• Language: croatian
• URN:NBN: urn:nbn:hr:127:666403
• Study programme: Title: Dental implantology; Study programme type: university; Study level: postgraduate specialist; Academic / professional title: sveučilišni specijalist dentalne medicine (sveučilišni specijalist dentalne medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-05-09 10:45:33