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Outcome of Root Canal Treatments Prepared with Tri-Auto ZX and Hand Filing. An in Vivo Study

ABSTRACT The aim of the present study was to evaluate the outcome of root canal treatments prepared by Tri-Auto ZX and conventional hand filing, in vivo. The subjects of this study were 50 patients. In group I, root canal enlargements of 25 teeth were completed by Tri-Auto ZX. Group II, was control group. In both groups, root canals were obturated with cold lateral compaction. Time used for all preparation procedure and flare-up incidence were recorded. Root canal preparation times were 9 minute less with Tri-Auto ZX when compared with hand filing (16.7 min vs. 25.7 min, p<0.001). Five patients (20%) had flare-up in group I, whereas it was 12 (48%) in group II. Clinical symptoms and/or radiographic radiolucency was observed in three teeth (12%) of the Tri-Auto ZX group and five teeth (20%) in the hand filing group. There was no statistically significant difference (p>0.05) for the presence of disease, incidance of flare-up between the groups after two years. Using Tri-Auto ZX or hand filing in the preparation of root canals did not result in difference in the clinical treatment outcome. Using Tri-Auto ZX significantly reduced flare-up incidence and chair time when compared with hand filing.