ABSTRACT
Objective: Vertical root fracture [VRF] is among the most common causes of endodontic treatment failures. This study aims to compare charge-coupled devices [CCD] and photostimulable phosphor plates [PSP] for detection of vertical root fractures in endodontically treated teeth
Methods: In this diagnostic in vitro study, 40 maxillary anterior teeth were selected and after preparation and root canal filling, their crowns were cut 2mm above the cementoenamel junction [CEJ]. The teeth were embedded in a piece of dried bone and radiographed using CCD and PSP with equal geometry at zero and 15[degree sign] horizontal angles. VRFs were then induced and the fractured fragments were reattached. The teeth were radiographed again. Three observers evaluated the radiographs for detection of fracture line. Data were analyzed using the Proportion test and Wilcoxon's Signed Ranks test
Results: No significant difference was found between the two sensors in detection of VRFs [p-value [complete]= 0.592, p-value [absolute]= 1]. The sensitivity of the two sensors for detection of buccolingual and mesiodistal fractures was not significantly different [p-value BL [absolute]= 0.109, p-value BL [complete] 0.180] [p-value MD [complete]=0.593, p-value MD [absolute]= 0.102]. The sensitivity of both sensors for detection of buccolingual fracture was higher than for mesiodistal fractures [p<0.001]
Conclusion: CCD and PSP had equal efficacy for detection of VRFs in endodontically treated teeth
ABSTRACT
The aim of this study was to examine and compare the apical sealing ability of AH26, AH Plus and AH Plus Jet using the fluid filtration model. In this experimental study, 70 single-rooted teeth were dissected from the cement-enamel junction. Canals were prepared with ProTaper rotary system and hand K-files and irrigated with 5.25% NaOCl and 17% EDTA. Ten teeth were assigned to the control group and divided into 5 positive and 5 negative controls. Remaining specimens were divided into 3 groups of 20 samples each and filled with gutta percha by lateral condensation technique. Each sample group was filled with either AH26, AH Plus or AH Plus Jet. Microleakage was assessed on the 2[nd] and 30[th] day by the amount of air bubble movement within the capillary glass tube connected to the root. One-way ANOVA test was used for analysis. AH Plus Jet had the least microleakage value and AH Plus presented the highest rate; however, the differences were not statistically significant. Under the conditions of this study, all three studied sealers provided satisfactory seal within the two time intervals. AH Plus Jet demonstrated slightly lower microleakage values; therefore, its application can be recommended in endodontic therapy