Analiza utjecaja brze polimerizacije na polimerizacijsku kinetiku nove generacije kompozitnih materijala

master's thesis

• Title (english): Impact of rapid polymerization on the polymerization kinetics of new-generation composite materials
• Author: Ana Marošević
• Mentor: Danijela Marović (mentor)
• Committee member: Danijela Marović (predsjednik povjerenstva)
• Committee member: Anja Baraba (član povjerenstva)
• Committee member: Larisa Musić (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; (Department of Endodontics and Restorative Dentistry); Zagreb
• Defense date and country: 2024-07-10, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Endodonics and Restorative Dentistry

Abstract

Cilj istraživanja bio je ispitati kinetiku polimerizacije bulk-fill kompozitnih materijala na dubini 4 mm pri brzoj polimerizaciji koristeći viševalni ili jednovalni polimerizacijski uređaj. Ispitana su četiri bulk-fill kompozitna materijala: Filtek One Bulk Fill Restorative, Tetric PowerFill, Tetric PowerFlow i SDR Plus Bulk Fill Flowable. Valjkasti uzorci (n=6; d=2 mm, h=4 mm) polimerizirani su s (I) Bluephase PowerCure (Ivoclar Vivadent) ili (II) Translux Wave (Kulzer) s ukupno 5 polimerizacijskih programa. Bluephase PowerCure je emitirala ljubičasto-plavi spektar te je imala program za brzu polimerizaciju s 3.000 mW/cm2 tijekom 3 s, dok je Translux Wave emitirao samo u plavom dijelu spektra te nije imao program za brzu polimerizaciju. Spektri su registrirani u realnom vremenu kontinuirano za vrijeme i nakon svjetlosne polimerizacije tijekom 5 minuta ATR-FTIR spektrometrijom (Nicolet™ iS50 FTIR Spectrometer, Thermo Fisher Scientific Inc.) na dubini od 4 mm. Svi materijali pokazali su najveći stupanj konverzije za 20 s protokol, a najniži za 3 s protokol na 4 mm dubine. Tetric PowerFlow pokazao je najveći stupanj konverzije i najvišu maksimalnu brzinu polimerizacije za sve polimerizacijske protokole i polimerizacijske uređaje, dok je Filtek One postigao najniže vrijednosti. Vrijeme dostizanja maksimalne brzine polimerizacije bilo je najduže za 20 s polimerizacijske protokole s oba polimerizacijska uređaja, a najkraće za 3 s i 10 s protokol kod Bluephase PowerCure.Polimerizacija nižim intenzitetom tijekom 20 s dovela je do višeg stupnja konverzije analiziranih bulk-fill kompozita. Ultrakratka polimerizacija s visokim intenzitetom svjetlosti nije odgovarajuća za sve materijale.

Abstract (english)

The aim of the research was to examine the kinetics of polymerization of bulk-fill composite materials at a 4-mm depth under rapid polymerization using a polywave or monowave polymerization unit. Four bulk-fill composite materials were examined: Filtek One Bulk Fill Restorative, Tetric PowerFill,Tetric PowerFlow and SDR Plus Bulk Fill Flowable. Cylindrical specimens (n=6; d=2 mm, h=4 mm) were polymerized using (I) Bluephase PowerCure (Ivoclar Vivadent) or (II) Translux Wave (Kulzer) in five polymerization protocols. Bluephase PowerCure emitted violet-blue light and had a rapid polymerization mode at 3.000 mW/cm2 during 3 seconds, while Translux Wave emitted only within the blue region and did not have a rapid polymerization module. The spectra were recorded in real time continuously during and after light polymerization for 5 minutes using ATR-FTIR spectrometry (Nicolet™ iS50 FTIR Spectrometer, Thermo Fisher Scientific Inc.) at a 4-mm depth. All materials showed the highest degree of conversion for the 20 s protocol, and the lowest for the 3 s protocol at a depth of 4 mm. Tetric PowerFlow showed the highest degree of conversion and the highest maximum polymerization rate for all polymerization protocols and polymerization units, whereas Filtek One achieved the lowest values. The time to reach the maximum polymerization speed was the longest for the 20 s polymerization protocols with both polymerization devices, and the shortest for the 3 s and 10 s protocol with Bluephase PowerCure. Low-intensity polymerization for 20 s led to a higher degree of conversion of the analyzed bulk-fill composites. Ultra-short polymerization with high-intensity is not suitable for all materials.

• Keywords: bulk-fill kompoziti; kompozitne smole; svjetlosna polimerizacija adheziva; polimerizacija; ultrakratka polimerizacija s visokim stupnjem intenziteta
• Keywords (english): Bulk-Fill Composites; Composite Resins; Light-Curing of Dental Adhesives; Polymerization; Ultra-Short Polymerization with High Intensity
• Language: croatian
• URN:NBN: urn:nbn:hr:127:698373
• Project: Number: IP-2019-04-6183; Title: Biomimetički inteligentni kompozitni sustavi; Acronym: BIOMICS; Leader: Zrinka Tarle; Jurisdiction: Croatia; Funder: HRZZ (Hrvatska zaklada za znanost); Funding stream: IP
• Study programme: Title: Integrated undergraduate and graduate university study of 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: 2024-07-08 14:20:34