Evaluation of the Retention Force of Double Conical Crowns Used in Combination with a Galvanoforming and Casting Fabrication Technique

Purpose: The aim of this study was to measure the in vitro retention force of double conical crowns fabricated using primary galvanoforming and secondary casting techniques and those fabricated using primary casting and secondary galvanoforming techniques under simulated clinical conditions before and after a wear test. Materials and Methods: Primary galvanoformed crowns (n = 10) with non‐noble secondary crowns (n = 10; group A) and primary non‐noble crowns (n = 10) with secondary galvanoformed crowns (n = 10; group B) were fabricated. Each primary and secondary crown was embedded in acrylic resin and weighed with a digital balance. Retention forces were then measured using a universal testing device. To simulate wear, specimens were inserted and separated horizonatally 3285 times in wear equipment with artificial saliva. Retention forces and weights of the double crowns were then remeasured. Data were analyzed using paired t‐tests and Wilcoxon tests, and the groups were compared using Mann–Whitney U‐tests. Results: In group A, the wear test had a significant influence on the retentive force (p < 0.05), but wear produced no significant difference in weight (p > 0.05). In group B, the wear test had a significant influence on the retentive force (p < 0.05), and wear produced a significant difference in weight (p < 0.05). Conclusions: The results of this study indicated that the use of different combinations of galvanoforming and casting techniques in the fabrication of conical crowns significantly affected retention force.     

The Impact of Mental Health Nursing Module,Clinical Practice and an Anti-Stigma Program on Nursing Students' Attitudes toward Mental Illness: A Quasi-Experimental Study

BackgroundIt is important to support nursing students during their education in developing positive attitudes toward people with mental illness.ObjectivesTo examine the impact of mental health nursing module, clinical practice, and anti-stigma program on the attitudes of nursing students toward mental illness.DesignThe study was a single group pretest and posttest quasi-experimental design.SettingsThis study was conducted in a nursing school in the west of Turkey.ParticipantsThe sample of the study consisted of 64 undergraduate nursing students.MethodsThe data were collected through the Beliefs Toward Mental Illness Scale and Social Distance Scale.ResultsThe mean scores of the dangerousness subscale significantly decreased after mental health nursing module, clinical practice and anti-stigma program. The results revealed significant positive differences in the mean scores of the social distance scale after the theory, clinical practice, and anti-stigma program were completed.ConclusionsThe mental health nursing curriculum should be focused on replacing stereotypes with accurate information. Anti-stigma programs should be included in standard mental health nursing courses.     

Exploration of the Factors Affecting the Choices of Nursing Students Who Choose Psychiatric Nursing as the First and Last Choice

The aim of this qualitative study was to explore the factors that affect the choices of nursing students who chose a psychiatric nursing internship. The sample group of the study consisted of 13 students who listed psychiatric nursing as their first choice and 11 students who listed psychiatric nursing as their last choice. Four themes were determined: personal reasons, stigmatization, experiences related to psychiatric nursing, and perception of care. Providing activities in nursing education to reduce stigmatization and increasing the time allocated for psychiatric nursing theory and practice are recommended.     

Anesthetic Management for Left Ventricular Assist Device Implantation Through Left Thoracotomy: Evaluation of On-Pump Versus Off-Pump

Background

Ventricular assist devices (VADs) are alternative approaches to medical treatment in patients with acute or chronic heart failure. The goal of this study was to compare an anesthetic approach in patients undergoing implantation of a VAD with (on-pump) or without (off-pump) cardiopulmonary bypass (CPB) through left thoracotomy.

The efficacy of 8% Arginine-CaCO3 applications on dentine hypersensitivity following periodontal therapy: A clinical and scanning electron microscopic study

Objectives: Periodontal therapy is one of the etiological factors of dentine hypersensitivity (DH). This study aimed to evaluate the efficacy of %8Arginine-CaCO3 on DH that affects patients after periodontal treatment. Study design: Seventy-one teeth from the volunteers (n=36) with history of DH caused by periodontal therapy were included in this study, and randomly divided into two groups: group-1, who received 8%Arginine-CaCO3 and group-2, who received 1.23%NaF-gel. The clinical indices were recorded at first visit.DH was evaluated by using tactile, air-blast, and thermal stimuli. The subject’s response was recorded at baseline, immediately (Day-0) and one month after the application. Results and conclusions: The results were statistically analyzed, and it was found that 8% Arginine-CaCO3 treatment was more effective than 1.23% NaF-gel at time intervals. Sensitivity score differences between the groups were statistically significant at Day-28. The 8% Arginine-CaCO3 group exhibited statistically significant reduction in DH on three stimuli at baseline to Day-28. It was concluded that 8% Arginine-CaCO3 is more effective than 1.23% NaF-gel in reduction of patients’ pain. Key words:Arginine, desensitizing agent, hypersensitivity, periodontal treatment, scaling and root planning, sodium fluoride.