Propusnost ispuna korijenskog kanala kod različitih tehnika punjenja

Autor: Katic, Denis, Ivana Miletic, Karlovic, Zoran, Jankovic, Bernard
Jazyk: angličtina
Rok vydání: 2006
Předmět:
Zdroj: Acta stomatologica Croatica : International journal of oral sciences and dental medicine
Volume 40
Issue 1
Web of Science
ISSN: 1846-0410
0001-7019
Popis: Svrha rada bila je ispitati propusnost ispuna korijenskih kanala izrađenih tehnikom hladne lateralne kondenzacije, tehnikom tople lateralne kondenzacije (Touch’n Heat) i tehnikom Thermafil. Za pokus je rabljen uzorak od 70 jednokorijenskih trajnih zuba. Korijenski kanali svih zuba obrađeni su tehnikom “step-back”. Slučajnim odabirom zubi su podijeljeni u tri skupine po 20 uzoraka i ispunjeni su gore navedenim tehnikama. Deset uzoraka bilo je u kontrolnoj skupini. Nakon petnaestodnevnog stvrdnjavanja u sterilnoj fiziološkoj otopini uzorci su izvađeni, osušeni, premazani izolacijskim lakom te stavljeni u kušalicu uz dodatak boje. Nakon sedam dana podvrgnuti su procesu bistrenja. Prozirnost zuba postignuta je demineralizacijom u dušičnoj kiselini, dehidracijom u etilnom alkoholu i uranjanjem zuba u metil-silicilat. Prodor boje očitan je stereomikroskopom. Rezultati su statistički obrađeni dvosmjernom analizom varijance s “post hoc” LSD testovima. Temeljem dobivenih rezultata statistički znatno manji prodor boje izmjeren je kod uzoraka punjenih tehnikom Touch’n Heat (0,63 mm ±0,35) i Thermafilom (0,71 mm ±0,57) u usporedbi s tehnikom hladne lateralne kondenzacije (1,31 mm ±0,75).
The aim of this study was to assess leakage of root canals obturated using different techniques: cold lateral condensation, warm lateral condensation (Touch’n Heat) and Thermafil. The experimental sample had 70 single rooted permanent teeth. Root canals were instrumented using step-back technique. The teeth were randomly assigned to three groups of 20 samples and obturated using experimental techniques. Ten samples were used as control samples. After a fifteen-day setting period in sterile saline, the samples were taken out, dried, covered by insulating varnish and placed in test-tube with dye. After seven days, the samples were subjected to demineralisation in nitrogen acid, dehidration in ethanol and submerged in methyl-silicilate, thus rendering them transparent. Dye penetration was then read using stereomicroscope. The results were processed by two-way analysis of variance with LSD post hoc test. The results indicate significantly lower dye-penetration in samples obturated using Touch’n Heat technique (0.63±0.35mm) and Thermafil (0.71±0.57mm), when compared to the sample obturated using cold lateral condensation (1.31 ±0.75mm).
Databáze: OpenAIRE
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