The Ultrasound Method of Preparing the Root Canal During Endodontic Treatment

Svrha rada: Svrha je rada refleksijskom elektronskom mikroskopijom istražiti površinu stijenki korijenskih kanala i procijeniti djelotvornost ultrazvučne tehnike obrade tijekom endodontskog tretmana. Materijal i metode: Eksperimentalni dio studije izveden je na izvađenim ljudskim zubima. U obradi korijenskih kanala uporabljen je ultrazvučni uređaj ENAC Osada Electric CO.LTD. Fizikalne osnove rada ultrazvučnih endodontskih uređaja temelje se na transverzalnim oscilacijama strugača. Slobodno vibrirajuči vrh instrumenta uz akustično strujanje otopine Na-hipoklorita proizvodi hidrodinamični stres dovoljno jak da čisti stijenke korijenskoga kanala. Rezultati: Raščlamba mikrofotografija istraživanih uzoraka nedovojbeno potvrđuje čiste i glatke površine stijenki korijenskoga kanala, oštre i jasne konture oko ulaza u dentinske tubuluse i dobru prohodnost tubulusa. Rezultatai istraživanja potvrđuju djelotvornost i prednost istodobne uporabe ultrazvučnog instrumenta i Na-hipoklorita tijekom endodontskog tretmana.Zaključak: Ultrazvučna tehnika obrade endodotnskog prostora metoda je izbora, te uz kontinuiranu irigaciju djelotvorno uklanja inficirano tkivo iz korijenskoga kanala, konično ga proširuje ostavljajući čiste i glatke stijenke bez zaostatnoga sloja.Aim of research: The aim of this research was to examine the root canal wall surface by reflexional microscopy and to evaluate the effectiveness o f ultrasound technique during endodontic treatment. Material and methods: The experimental part o f this study was conducted on extracted human teeth. An ENAC Osada Electric CO. LTD. ultrasound unit was used in the treatment. The physical principles of using the ultrasound endodontic unit is based on transversal oscillations of the scraper. The free vibrating point o f the instrument combined with caustic circulation o f Na-Hypochloride solution produces dynamic stress strong enough to clean the root canal walls. Results: Analysis o f examined specimen micrographs indisputedly revaled clean and smooth root canal surfaces, sharp and clear contours around the dentinal tubuli openings and good conduction o f the tubuli. The results of this research confirmed the effectiveness and advantage of simultaneous use o f ultrasound instruments and Na-Hypochloride during endodontic treatment. Conclusion: The ultrasound method of preparing the endodonti space is a method of choice, which, by continued irrigation, efficiently removes infected tissues from the root canal and conically widens it, leaving the root canal walls clean, smooth and without residual deposits