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Sealing ability of contemporary endodontic cements

dc.contributor.advisorStojanac, Igor
dc.contributor.otherBlagojević, Duška
dc.contributor.otherDrobac, Milan
dc.contributor.otherKaradžić, Branislav
dc.contributor.otherMedić, Deana
dc.contributor.otherVujkov, Sanja
dc.creatorNešković, Isidora
dc.date.accessioned2020-07-06T10:11:04Z
dc.date.available2020-02-24T10:11:04Z
dc.date.available2020-07-03T13:25:57Z
dc.date.issued2020-02-07
dc.identifier.urihttp://nardus.mpn.gov.rs/handle/123456789/11935
dc.identifier.urihttps://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija157287433594684.pdf?controlNumber=(BISIS)112249&fileName=157287433594684.pdf&id=14163&source=NaRDuS&language=srsr
dc.identifier.urihttps://www.cris.uns.ac.rs/record.jsf?recordId=112249&source=NaRDuS&language=srsr
dc.identifier.urihttps://www.cris.uns.ac.rs/DownloadFileServlet/IzvestajKomisije157287434419573.pdf?controlNumber=(BISIS)112249&fileName=157287434419573.pdf&id=14164&source=NaRDuS&language=srsr
dc.description.abstractEndodontska terapija predstavlja relativno složenu mikrohiruršku intervenciju na patološki promenjenoj ili traumatsko oštećenoj pulpi. Najčešći uzrok neuspeha endodontske terapije predstavlja apikalno curenje, koje najčešće omogućava progresiju mikroorganizama usled nepotpune kanalne opturacije. Dalji uzroci nespeha su: anatomo-morfološke varijacije kanalnog sistema, kalcifikovani i neprohodni kanali, jako zakrivljeni i zaboravljeni (netretirani) kanali itd. Za kanalnu opturaciju se najčešće koristi gutaperka zbog dobrih fizičkih i bioloških svojstava, ali usled slabe adhezije za dentin i nedovoljnog ispunjavanja mikroprostora unutar kanalnog sistema, uvek se mora koristiti u kombinaciji sa cementom za opturaciju (engl. sealer). Endodontski cementi su odgovorni za popunjavanje nepravilnosti u preparisanim kanalima, eliminisanje preostalih bakterija i hermetičko zaptivanje kanalnog sistema. Idelan endodontski cement ima sposobnost da se lako adaptira za zidove kanala korena zuba, da popuni aksesorne kanale i apikalne ramifikacije, područja resorpcije, nepravilnosti unutar kanalnog sistema, odnosno sve prostore koje gutaperka ne može da ispuni i koji su kao takvi potencijalni rezervoar za bakterijsku kolonizaciju. Endodontski cementi koji poseduju sposobnost penetracije unutar dentinskih tubula mogu ispoljiti potencijalno antibakterijsko svojstvo i time dodatno uticati na broj preostalih bakterija. Cilj ovog istraživanja je bio da se odredi kvalitet zaptivnih svojstava biokeramičkog cementa na bazi kalcijum silikata u odnosu na konvencionalne cemente na bazi epoksi-bisfenol smola i na bazi epoksi-bisfenol smola i kalcijum hidroksida, dve tehnike opturacije kanalnog sistema: monokona tehnika i opturacija tehnikom zagrejane gutaperke na čvrstom nosaču. Materijali i metode: U studiji, uzorak su činili vitalni jednokoreni humani zubi, sa sličnom morfologijom, ekstrahovani iz parodontoloških i ortodontskih razloga. U ispitivanje je uključeno 66 zuba. Uzorak je podeljen u dve grupe na osnovu tehnike opturacije, a svaka grupa je dodatno podeljena na još tri podgrupe u zavisnosti od endodontskog cementa koji je ispitivan, što ukupno čini 6 grupa od po 10 kanala. Zubi sa intaktnim krunicama (n=3) predstavljali su negativnu kontrolnu grupu, dok su uzorci (n=3) opturisani samo gutaperkom predstavljali pozitivnu kontrolnu grupu. Rezultati: Pojava mikrocurenja kod monokone tehnike i tehnike zagrejane gutaperke na čvrstom nosaču (Thermafil) prvi put se pojavljuje 14. dana od momenta inokulacije bakterijskim sojem. Kod monokone tehnike opturacije u 50% uzoraka do 33. dana došlo je do pojave mikrocurenja nakon inokulacije bakterijskim sojem. Kod tehnike zagrejane gutaperke na čvrstom nosaču (Thermafil) u 53,33% uzoraka do 33. dana došlo je do pojave mikrocurenja nakon inokulacije bakterijskim sojem. AH plus cement pokazuje statistički značajno bolje rezultate zaptivanja kanala korena od BC sealer cementa i Acroseal cementa, bez obzira na korišćenu teniku opturacije. AH plus pokazuje statistički značajno manju pojavu mikrocurenja uz primenu monokone tehnike opturacije. Acroseal cement je obezbedio adekvatno zaptivanje kanala korena u obe korišćene tehnike opturacije u periodu od 23 dana od inokulacije što je statistički značajno bolje u odnosu na odnosu na AH plus i BC sealer, bez obzira na korišćenu teniku opturacije Zaključak: Na osnovu dobijenih rezultata može se zaključiti da kanalno punjenje može da prevenira pojavu mikrocurenja maksimalno do 14 dana, te je u tom periodu neophodno izvršiti definitivnu koronarnu restauraciju, u suprotonom neophodno je ponoviti endodontski tretman.sr
dc.description.abstractEndodontic therapy is a relatively complex microsurgical intervention on a pathologically altered or traumatically damaged pulp. The most common cause of failure of endodontic therapy is apical leakage, which most often allows the progression of microorganisms due to incomplete canal obstruction. Further causes of failure are: anatomo-morphological variations of the canal system, calcified and impassable canals, heavily curved and forgotten (untreated) canals, etc. Gutta-percha is most commonly used for canal obturation because it has a good physical and biological properties, but due to poor dentin adhesion and insufficient filling of the micro space within the canal system, it has to be used in combination with sealer. Endodontic sealers are responsible for filling imperfections in the prepared canals, eliminating the remaining bacteria, and sealing the canal system. Ideal endodontic cement has the ability to adapt to the walls of the root canal, to fill the accessory canals and apical ramifications, areas of resorption, irregularities within the canal system and spaces that the gutta-percha cannot fill, which as such are a potential reservoir for bacterial colonization. Endodontic cements that have the ability to penetrate the dentinal tubules may have exhibit a potential antibacterial capacity and thus further affect the number of bacteria remaining. The aim of this study was to determin the quality of sealing properties of calcium silicate-based bioceramic cement over conventional epoxy-bisphenol resin and epoxy-bisphenol resin and calcium hydroxide cements and two obturation techniques: single-cone technique and Thermafil technique. Materials and methods: In the study, the sample was consisted of vital single-rooted human teeth, with similar morphology, extracted by periodontal and orthodontic reasons. 66 teeth were included in the test. The sample was divided into two groups on the basis of the technique of opturation, and each group was further divided into three more subgroups depending on the endodontic cement that was examined, making a total of 6 groups of 10 canal each. Teeth with intact crowns (n = 3) represented a negative control group, whereas specimens (n = 3) only gutta-percha-treated specimens represented a positive control group. Results: The occurrence of micro leakage in the monocone technique and Thermafil technique first appears on 14th day from the moment of inoculation with bacterial strain. With the monocone technique of opturation, micro leakage occurred in 50% of the samples by day 33 after inoculation with bacterial strain. In Thermafil technique 53.33% of samples by day 33 showed microleakage after inoculation with bacterial strain. AH plus cement shows statistically significantly better root canal sealing results than BC sealer cement and Acroseal cement, regardless of the used techiques. AH plus sealer shows a statistically significantly lower incidence of microleakage with the use of a single-cone technique. Acroseal cement provided adequate root canal sealing in both used techniques of inoculation over a period of 23 days after inoculation, which is statistically significantly better than that of AH plus and BC sealer, regardless of the technique used. Conclusion: Based on the obtained results, it can be concluded that canal filling can prevent the occurrence of microleakage for up to 14 days, then during this period it is necessary to perform definitive coronary restoration, otherwise it is necessary to do retreatment.en
dc.languagesr (latin script)
dc.publisherУниверзитет у Новом Саду, Медицински факултетsr
dc.rightsopenAccessen
dc.sourceУниверзитет у Новом Садуsr
dc.subjectmaterijali za punjenje kanala korena zubasr
dc.subjectRoot Canal Filling Materialsen
dc.subjectterapija kanala korena zubasr
dc.subjectantibakterijski lekovisr
dc.subjectdentalni cementisr
dc.subjectmikrocurenjesr
dc.subjectEnterococcus faecalissr
dc.subjectopturacija kanala korena zubasr
dc.subjectepoksi smolesr
dc.subjectjedinjenja kalcijumasr
dc.subjectsilikatisr
dc.subjectRoot Canal Therapyen
dc.subjectAnti-Bacterial Agentsen
dc.subjectDental Cementsen
dc.subjectDental Leakageen
dc.subjectEnterococcus faecalisen
dc.subjectRoot Canal Obturationen
dc.subjectEpoxy Resinsen
dc.subjectCalcium Compoundsen
dc.subjectSilicatesen
dc.titleZaptivna svojstva savremenih endodontskih cemenatasr
dc.title.alternativeSealing ability of contemporary endodontic cementsen
dc.typedoctoralThesisen
dc.rights.licenseBY-NC-ND
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/34589/IzvestajKomisije.pdf
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/34588/Disertacija.pdf


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