Ispitivanje učinkovitosti završnih protokola ispiranja u uklanjanju ostataka punila nakon revizije zavijenih korijenskih kanala

master's thesis

• Title (english): Effect of an additional step to the irrigation protocol to reduce filling material remnants after root canal retreatment in severely curved root canals
• Author: Adriana Ferenac
• Mentor: Ivona Bago (mentor)
• Committee member: Ivona Bago (predsjednik povjerenstva)
• Committee member: Valentina Rajić (član povjerenstva)
• Committee member: Ana Ivanišević (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; (Department of Endodontics and Restorative Dentistry); Zagreb
• Defense date and country: 2019-07-11, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Endodonics and Restorative Dentistry

Abstract

Svrha znanstvenog rada bila je ispitati doprinos dodatnog završnog aktivacijskog ispiranja (zvučno aktivacijsko ispiranje i lasersko aktivacijsko ispiranje) korijenskog kanala natrijevim hipokloritom (NaOCl) i otapalom temeljenim na timolu na uklanjanje zaostalog punila iz zavijenih korijenskih kanala nakon standardne kemomehaničke revizije kanala jednim instrumentom. U istraživanju je korišteno 37 ekstrahiranih humanih molara sa zavijenim korijenima. Korijenski kanali instrumentirani su ProTaper Next rotacijskom tehnikom te punjeni punilom na bazi epoksi smole i kombinacijom tehnike kontinuiranog vala i tople injekcijske tehnike. Kanali su revidirani WaveOne Gold primarnim crvenim instrumentom te isprani prema standardnom završnom protokolu (natrij hipoklorit i etilendiaminotetraoctena kiselina). Uzorci su nasumično podijeljeni u četiri skupine ovisno o dodatnom ispiranju kanala. U prvoj skupini korišten je EndoActivator u kombinaciji s NaOCl-om, u drugoj skupini laserski je aktivirano otapalo na bazi timola, u trećoj skupini laserska aktivacija (LAI) NaOCl-a, a u četvrtoj skupini EndoActivator u kombinaciji s otapalom temeljenim na timolu. Korijeni su snimani u mikro-kompjuteriziranom tomogramu (mikro-CT) nakon punjenja, nakon revizije, nakon standardnog završnog ispiranja i nakon dodatnog ispiranja u svrhu izračuna volumena zaostalog punila. Otkriveno je značajno smanjenje volumena punila nakon kemomehaničke revizije (p=0,015) kod svih skupina. Međutim, niti u jednom uzorku punilo nije u potpunosti uklonjeno iz kanala. Ako gledamo smanjenje volumena punila nakon dodatnog završnog ispiranja kanala po skupinama (u odnosu na završno ispiranje kanala), nije dokazano značajno smanjenje niti u jednoj skupini (p>0,05). Nije dokazano značajno uklanjanje ostataka punila dodatnim završnim ispiranjem (p>0,05), kao ni razlika između različitih aktivacijskih tehnika.
Dodatno aktivacijsko ispiranje kanala nije doprinijelo smanjenju volumena punila unutar kanala.

Abstract (english)

The aim of this study was to examine the additional effect of activated irrigation protocols (sonic activated irrigation and laser activated irrigation) in combination with sodium hypochlorite and thymol-based solvent activation on the removal of the filling remnants left after the root canal retreatment. In this study, 37 human extracted molars were used. The root canals were instrumented by rotary ProTaper Next system and filled with epoxy resin-based sealer and the combination of continuous-wave and hot injection technique. The canals were retreated by WaveOne Gold primary red file and rinsed according to the standard final irrigation protocol (sodium hypochlorite and ethylenediaminotetraacetic acid). Subsequently, specimens were randomly divided into four groups according to the additional irrigation step. In Group 1, the additional irrigation was performed with the EndoActivator in combination with NaOCl. In Group 2, the thymol-based solvent was laser activated. In Group 3, the additional irrigation was performed with laser activation (LAI) of NaOCl. In Group 4, the thymol-based solvent was used with EndoActivator. Micro-CT scan was performed after the filling, after the retreatment, after the standard irrigation protocol, after the additional step to the irrigation protocol in order to measure the volume of the remaining filling material. Significantly reduced amount of filling material after chemomechanical preparation (p = 0.015) was found in all groups. However, in either sample the filling material was not completely removed. If we look at the reduction of the filling material volume after the additional rinsing of the canals by groups (in relation to the final canal irrigation), no significant reduction was found in any group (p> 0.05). No significant removal of the filling material by additional irrigation (p> 0.05) was demonstrated, as did the difference between the various activation techniques.
Additional activation rinsing of the canals did not contribute to the reduction of filler volume within the canals.

• Keywords: revizija; zavijeni kanali; ostaci punila; EndoActivator; LAI; Endosolv; mikro-CT
• Keywords (english): retreatment; curved canals; filling remnants; EndoActivator; LAI; Endosolv; micro-CT
• Language: croatian
• URN:NBN: urn:nbn:hr:127:565914
• Study programme: Title: 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: 2019-10-17 12:13:30