Effectiveness of 10% povidone-iodine drying time before Peripheral Intravascular Catheter insertion: preliminary results from an explorative quasi-experimental study / Eficácia de iodopovidona a 10% de acordo com tempo de secagem antes da inserção do cateter intravenoso periférico: resultados preliminares de um estudo exploratório quasi-experimental / Eficacia del tiempo de secado de la yodopovidona al 10% antes de la inserción de catéter venoso periférico: resultados preliminares de un estudio exploratorio casi-experimental

AIM: to investigate the effectiveness of 10% povidone-iodine after a 30-second or 2-minute drying time on microbial count reduction at the point of a Peripheral Intravascular Catheter (PIC) insertion. A quasi-experimental design was adopted. In total, 53 patients were enrolled, 25 were exposed to a 2-m drying time and 28 to a 30-s drying time. From the preliminary results of this study, no differences in the occurrence of contamination have emerged between patients receiving 30-s and 2-m drying time for 10% povidone-iodine solutions.

OBJETIVO: investigar a eficácia da solução iodopovidona a 10% sobre a redução da contagem microbiana no ponto de inserção do Cateter Venoso Periférico após tempo de secagem de 30s ou 2 min. MÉTODO: desenho quase-experimental. Foram incluídos 53 pacientes no estudo: 25 foram expostos a 2min de secagem e 28 foram expostos a 30s de secagem. RESULTADOS: Os resultados preliminares não apresentaram diferenças na ocorrência de contaminação entre os pacientes que foram submetidos a 30s ou 2min de secagem após desinfecção com solução de iodopovidona a 10%.

OBJETIVO: para investigar la eficacia de una solución yodopovidona al 10% tras tiempo de secado de 30 segundos o 2 minutos en la reducción del contaje microbiano en el local de inserción del Catéter Venoso Periférico, fue adoptado un diseño casi-experimental. Al total, fueron incluidos 53 pacientes, 25 expuestos a 2 min. de secado y 28 a 30 segundos. Con base en los resultados preliminares, no se encontraron diferencias en la ocurrencia de contaminaciones entre pacientes sometidos a un tiempo de secado de 30 s. o de 2 min tras desinfección con solución de yodopovidona al 10%.

Effect of wetness on the enamel bonding / 대한치과보존학회지

This study evaluated the microleakage and interfacial gap between enamel and composite resin under the dry and wet condition of the enamel surface. V shaped class 5 cavities were prepared on the occlusal portion of extracted human molars. Samples were divided into three groups: D group (air dry for 10-15 s), BD group (blot dry with moist cotton pellet), and DR group (air dry for 10-15 s and rewet with Aqua-Prep F for 20 s). Cavities were filled using Aelitefil composite resin after applied One-Step. Microleakage was tested by 2% methylene blue dye solution and the data were statistically analysed by Kruskal-Wallis test and Mann-Whitney test. Also Enamel-resin interface was observed under SEM. Group BD showed statistically lower microleakage than group D (p 0.05). At the enamel-resin interface, group D showed the gap of 2 microm thickness, but group BD and DR showed close adaptation. In conclusion, the use of blot dry and rewetting agent (Aqua-Prep F) resulted in decreased microleakage and improved adhesion between enamel and resin when using One-Step.

Effect of a rewetting agent on dentin adhesion / 대한치과보존학회지

This study compared the dentin adhesion to composite resin according to air-dry, blot dry, application of rewetting agent on air-dry or blot dry dentin surface by microleakag test and SEM observation. For microleakage test, class V cavity preparations with dentinal margins were prepared on both buccal and lingual surfaces of 40 extracted human molars. For SEM observation, occlusal dentin of 20 extracted human molars were exposed. After etched the dentin, prepared teeth were randomly divided into four groups; D group: air dry for 10-15 sec., B group: blot dry with moist cotton pellet, D-R group: air dry and rewet with Aqua-Prep F for 20 sec., B-R group: blot dry and rewet with Aqua-Prep F for 20 sec. Treated cavities and surfaces were filled or constructed using One-Step adhesives and Aelitefil composite resins. Specimens were stored in distilled water for 24 hours. For microleakage test, the specimens were thermocycled and soaked into 2% methylene blue. The specimens were sectioned longitudinally and evaluated for microleakage under steromicroscope. The data were statistically analysed by Kruskal-Wallis Test, Mann-Whitney and Wilcoxon signed ranked tests. For SEM observation, the specimens were bisectioned mesiodiatally. After decalcified and deproteinized, specimens were observed under SEM. The results of this study were as follows; 1. The microleakges on dentinal margin were the highest in D group compared with B group, D-R group, and B-R group(p<0.05). But there was no significant difference between B group, D-R group and B-R group. 2. D group showed gap and a few resin tags between dentin and composite resin. 3. B group, D-R group, and B-R groups showed close adaptation between dentin and composite resin. It showed that resin rags in B group were numerous and long, in D-R group were few and short, in B-R group were numerous and short or long. 4. Adhesive layer showed in D-R group (10 microm) and B-R group (3 microm) In conclusion, use of rewetting agent to dry dentin was efficient to dentin adhesion, also it did not provide reverse effect on blot dry dentin.