Search results for "operative"
showing 10 items of 2781 documents
Reliability and validity of the Finnish version of the Visual Analogue Scale Foot and Ankle (VAS-FA).
2018
Background: There have previously been no validated foot and ankle-specific patient-reported outcome measures in Finnish. Methods: The Visual Analogue Scale Foot and Ankle (VAS-FA) was translated and adapted into Finnish. Thereafter, 165 patients who had undergone foot and ankle surgery completed a questionnaire set on two separate occasions. Analyses included testing of floor-ceiling effect, internal consistency, reproducibility, and validity. Results: Minor linguistic differences emerged during the translation. Some structural adjustments were made. The mean (SD) total VAS-FA score was 74 (23). In the three subscales, maximum scores were noted in 2-5% of the responses, and internal consis…
Dentin wettability enhancement for three irrigating solutions and their effect on push out bond strength of gutta percha / AH Plus
2014
Background: The aim of this study was to investigate the effect of wettability enhancement for 17% EDTA, 2.5% sodium hypochlorite and 7% maleic acid solutions on push out bond strength of gutta percha /AH Plus to root dentin. Materials and Methods: One hundred and eight extracted single rooted human lower premolars were instrumented up to Protaper Universal F5 then irrigated with 3ml of 2.5% NaOCl after each file. Irrigants were prepared and a pilot study for determination of Tween 80 concentration yielding the lowest surface tension value in every solution was conducted. Samples were randomly divided into a control group and two experimental groups (17% EDTA and 7% Maleate), further split …
Anesthesia protocols in laboratory animals used for scientific purposes
2018
Background: A suitable, effective and free of complications anesthetic protocol is very important in experimental studies on animal models since it could bias the outcome of a trial. To date there is no universally accepted protocol for induction, maintenance and recovery from anesthesia. The endotracheal intubation with the use of inhalation anesthesia is used very especially in the from of large size laboratory animals, because it is a secure and easy control mode. However, it is not common for small laboratory animals because of the high technical skills required. Aim: The aim of this paper is a review of the main methods of induction of anesthesia in laboratory animals. Materials and me…
Cooperative learning in creating and managing joint ventures
2014
Abstract This study examines how and under what conditions joint ventures facilitate cooperative learning. The study analyzes how a joint-venture approach facilitates initial learning in the cooperative process and considers to what extent inter-organizational factors such as commitment, trust, control and conflict resolution affect the partners involved. The study then compares these hypotheses based on a sample of 74 international joint ventures (IJVs). The results provide empirical evidence to show that commitment is both a significant and essential variable, yet they also illustrate that this type of cooperation is not enough on its own for partners to learn how to cooperate effectively.
Antecedents of entry mode choice when diversifying
2009
Abstract Corporate diversification is one of the broadest investigation topics in strategic management, but there are important gaps in the literature regarding entry mode choice. Few studies have examined the extent to which pre-entry conditions influence the choice of entry mode into new businesses. Past research has focused exclusively on internal development and acquisition as ways of entering new businesses, without considering the existence of hybrid forms, such as strategic alliances, that have experienced extensive growth during the last decade. Here we present an in-depth analysis of entry mode choice that uses an integrative perspective of corporate diversification and considers s…
Análisis de los factores que influyen en el proceso de creación de una cooperativa de trabajo asociado.
2006
Este trabajo pretende contribuir al conocimiento existente sobre el proceso de creación de cooperativas de trabajo asociado (CTA) a partir de la aplicación de un método inductivo-deductivo como es la Teoría Fundamentada. Para ello se han realizado un total de 37 entrevistas en profundidad con los socios-promotores de CTA creadas en el periodo 2001-2002, todas ellas localizadas en la Comunidad Valenciana (España). Como resultado de la aplicación de la metodología se han identificado un total de 29 códigos substantivos o factores que influyen en el comportamiento de los socios fundadores en cada una de las fases del proceso de creación de la empresa. This paper aims to contribute to existing …
Effect of professional dental prophylaxis on the surface gloss and roughness of CAD/CAM restorative materials
2017
Background This study aimed to evaluate the effect of dental prophylaxis on the surface gloss and roughness of different indirect restorative materials for computer-aided design/computer-aided manufacturing (CAD/CAM): two types of CAD/CAM composite resin blocks (Shofu Block HC and Estelite Block) and two types of CAD/CAM ceramic blocks (IPS Empress CAD and Celtra DUO). Material and methods After polishing the CAD/CAM blocks and applying prophylaxis pastes, professional dental prophylaxis was performed using four different experimental protocols (n = 5 each): mechanical cleaning with Merssage Regular for 10 s four times (Group 1); four cycles of mechanical cleaning with Merssage Regular for …
Minimal intervention in dentistry: Which is the best approach for silorane composite restoration repairs?
2021
Made available in DSpace on 2021-06-25T10:28:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-04-01 Background: This study aimed to evaluate surface treatments, adhesives and composites for repairing silorane based restorations. Material and Methods: One hundred and twenty truncated cones (2 mm smaller diameter and 4 mm larger diameter) made of silorane composite were divided in 12 groups according with the surface treatment (diamond bur and oxide aluminum abrasion), the adhesive (Adper Scothbond Multipurpose (3M ESPE), Ecusit (Voco) and Filtek P90 Adhesive (3M ESPE)). Each group was subdivided in two according with the composite used for repair (methacrylate and silorane). The rep…
Repair bond strength of bulk fill composites after different adhesion protocols
2019
Background Repairs in composite resin restorations are common procedures in clinical practice. Many surface treatment options have been proposed to improve the adhesion between the old and new composite. The objective of this study was to evaluate the microtensile bond strength of repairs performed on aged bulk fill and conventional composites after different adhesion protocols. Material and methods First, 84 specimens (8x8x4 mm3) of a microhybrid composite and a high-viscosity bulk fill composite were prepared and aged. Afterward, they received a mechanical surface treatment by means of abrasion with a diamond bur, followed by division into six groups according to the adhesion protocol emp…
Influence of different photoinitiators on the resistance of union in bovine dentin: Experimental and microscopic study
2021
Background To evaluate in vitro the influence of photoinitiators on the microtensile strength of adhesive systems and composite resins in bovine dentin. Material and Methods Forty dentin obtained from bovine teeth were randomly distributed in four groups (n = 10) according to the different adhesive systems and composite resins used: G1 - AAPS + VAPS (Ambar APS + Vittra APS); G2- AAPS + O (Ambar APS + Opallis); G3 - A + VAPS (Ambar + Vittra APS) and G4 - A + O (Ambar + Opallis). After restoration with the composite, the samples were sectioned to obtain toothpicks that were subjected to the microtensile and nanofiltration test (1.0 mm/min). Results The Kruskal-Wallis test did not show signifi…