Browsing by Author "Vega Yépez, Andrés Gustavo"

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    Eficacia de diferentes tipos de aguja de irrigación en la remoción de debris en dientes Bovinos
    (2017) Ortiz Garay, Elida Magaly; Vega Yépez, Andrés Gustavo
    Objective: Compare the efficacy of the open-end needle (Flat) with the notched open-end needle (Notched) and the closed-end needle with lateral ventilation (Side-port) in the removal of debris of the apical third on bovine teeth. Materials and Methods: A transverse in vitro study was performed using 108 bovine teeth which were standardized to a length of 16mm and were apically prepared to a K # 60 file, were longitudinally divided and a groove was created in the apical third of the vestibular segment, which was filled with a mixture of debris and irrigant, the teeth were reassembled and distributed in three groups to be irrigated with 8ml of 5.25% sodium hypochlorite using three types of needles, finally dried with paper points . The teeth were disassembled for observation and take photographs of the grooves under the stereomicroscope at 30x. The evaluation of the effectiveness of debris removal was performed by two blinded and previously calibrated observers looking at the images obtained using the score described by van der Sluis. The tabulation and data analysis was performed in "SPSS vs.20" and the Chi Square test was performed
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    Eficacia de la irrigación ultrasónica, sónica y agitación manual dinámica en la remoción de hidróxido de calcio de conductos radiculares de dientes Bovinos
    (2017) Intriago Morales, Ruth Viviana; Vega Yépez, Andrés Gustavo
    Objective: To compare the irrigation techniques: ultrasonic, sonic and manual dynamic activation in the removal of Ca(OH)2 from simulated grooves in bovine teeth. Materials and Methods: An in vitro study was performed on one hundred and six bovine incisors, where their root canals were prepared up to a file of diameter 60. The roots were divided longitudinally to create a groove 2mm from the apex which was filled with Ca(OH)2, then the halves were reassembled and after 7 days of incubation the techniques were applied: passive ultrasonic irrigation (PUI), sonic irrigation [Endo Activator (EA)] and manual dynamic activation (MDA), using 5% NaOCl as irrigant. Positive control and negative control were used. Samples were analyzed using a stereomicroscope and images were taken with a digital camera. Two calibrated observers (Kappa> 0.8) evaluated the removal according to the van der Sluis scores and the results were analyzed using the Chi Square test. Results: Effectiveness percentages in Ca(OH)2 removal were 87.5%; 46.9% and 28.1% for PUI, EA and MDA respectively. The PUI irrigation protocol was superior and obtained a statistically significant difference compared to the other evaluated techniques (P <0.01). Conclusions: PUI eliminated significantly more Ca(OH)2 from the simulated grooves than the EA and MDA protocols. Keywords: Calcium hydroxide removal, ultrasonic irrigation, sonic irrigation, Endo Activator, manual dynamic activation, endodontics