EVALUATION OF NEW GENERATION APEX LOCATORS WITH PRESENCE OF DIFFERENT IRRIGATION SOLUTIONS IN THE ROOT CANALS

The aim of this study was to evaluate the reliability of two different new generation apex locator in the use of different irrigation solutions. in this study 90 human premolar teeth extracted for periodontal or orthodontic reasons were used. after preparing standart access cavities pulp tissue was extirpated with a tirnerf. working length was estimated by a number 10 k file introduced into the root canal, then teeth were mounted in alginate blocks. teeth were randomly divided into 5 group, consisting of 18 teeth each. root canals of samples were irrigated with endovac irragation device, 5.25 % naoci, 2 % chx, ozone water, solution contains a mixture of streptokinase and barium sulfate and mtad. within 2 hours working length was measured with apex locators using a number 20 k file. to control the reliability of measurements results were compared with periapical radiographies that were taken with parallel technique. statistically, it was found that irrigation solution has no effect on the reliability of apex locators to determine the location of apical foramen, but propex ii, a new generation apex locator, has shown more reliable results than raypex 5 (p<0.05). safety value was determined as 86,66 % for propex ii whereas it was 66,54 % for raypex 5. in conclusion the reliability to determine the location of apical foramen is higher in propex ii than raypex 5.