1,865 research outputs found

    Influence of Different Surface Conditioning Methods on Adhesion of Resin Cement to Zirconia

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    Statement of the problem: The challenge of enhancing the bond between zirconia and resin remains, and the efforts continue to determine a simple method for achieving a durable bond. Objective: This study aimed to evaluate the effect of different surface conditioning strategies on the bond strength between zirconia and resin cement. Materials & Methods: Forty zirconia specimens (Lava Plus) were fabri-cated and divided into four groups: control (no surface treatment), primer app-lication (Z-Prime Plus), experimental acid (H2O:HF:H2O2) application, and the combination of the acid and primer application (n=10). A dual-cure resin ce-ment (RelyX Ultimate) was applied over the zirconia specimens. Shear bond strength tests were conducted using a universal testing machine with a cross-head speed of 1 mm/min. The results were analyzed using one-way ANOVA followed by Tukey's post hoc test within the 95% confidence interval. Results: The results of the one-way ANOVA showed that acid applica-tion alone (22.99 ┬▒ 2.49 MPa) and acid and primer application (25.24 ┬▒ 3.19 MPa) had significantly higher bond strength than the primer (18.87 ┬▒ 3.13 MPa) and control (14.91 ┬▒ 3.72 MPa) groups (P<0.05). However, there was no significant difference between the acid group and acid and primer combination group (P=0.396). The control group had the lowest bond strength in all test groups (P<0.05)

    Surgical and Prosthetic Management of a Juvenile Ossifying Fibroma In a 5-Year-Old Child: A Clinical Report

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    Juvenile ossifying fibroma (JOF) is a rare and benign fibro-osseous lesion of the craniofacial skeleton commonly seen in children under 15 years of age. Despite being classified as benign, JOF lesions are aggressive in nature and reach large dimensions in a short period of time. Thus, their resections may cause large orofacial defects which have serious detrimental effects on the functional and nutritional requirements of pediatric patients being in the period of growth. Therefore, its early diagnosis and proper surgical and prosthetic management are of vital importance for the survival of patients. However, no detailed reports in the literature describe the prosthetic management of large intraoral defects in pediatric patients under 10 years old

    Facial blanching as an unusual complication after the ─▒njection of local anesthesia: A clinical report

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    Facial blanching is a complication related to local anesthesia in dentistry. Anatomical variation, intravascular injection, rapid local anesthetic injection, decreased blood flow with the vasopressor effect of epinephrine, ortho-retrograde movement of the solution, incorrect positioning of the needle, and neurological origin may cause this phenomenon, the etiology of which is not fully known. Most of the blanching cases reported in the literature are related to injection of the inferior alveolar nerve block. Also, intra-extraoral clinical photography is limited. Supraperiosteal infiltration anesthesia is a safe and easy technique that is frequently used in daily practice in dental clinics. This unique case report describes partial blanching of the face and gingiva after supraperiosteal infiltration of vasoconstrictor containing local anesthetic into the maxilla. In addition, the clinical-anatomical relationship of facial-mucosal blanching with the injection site, literature information, and clinical management with this complication are explained

    Dream Routes Intersecting; Shape of Water Shaping Rocky Banks

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    Mary Newell (https://manitoulive.wixsite.com/maryn) authored the chapbooks Re-SURGE and TILT/ HOVER/ VEER, poems in journals and anthologies, and essays including ÔÇťWhen Poetry RiversÔÇŁ (Interim journal 38.3). She is co-editor of Poetics for the More-than-Human-World: An Anthology of Poetry and Commentary. She teaches creative writing at the University of Connecticut, Stamford. Newell (MA Columbia, BA Berkeley) received a doctorate from Fordham University with a focus on environment and embodiment in contemporary womenÔÇÖs writing

    The Effects of Whole-Body Vibration Training on Trunk Muscle Strength: A Narrative Review

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    Mechanical vibration can improve neuromuscular function through postural control strategies, muscle tonic mechanisms, and tonic vibration reflexes. Whole body vibration (WBV) has also been announced to increase bone mineral density, muscle endurance and strength, as well as to enhance proprioceptive system. Moreover, WBV training was found to be a constructive strategy for improving the physical performance of elite athletes and healthy individuals in terms of muscle strength, agility, flexibility, and vertical jump height. Although there is still no consensus in research in this area, it is argued that certain molecular mechanisms involved in the physiological adaptations of exercise also emerge during WBV training. Clarifying these physiological mechanisms is crucial for optimizing the effectiveness of WBV trainings. Previous studies have examined the effects of WBV and have indicated developments in muscle strength, muscle endurance, flexibility, muscle cross sectional area, bone mineral density and body composition. However, no standard prescription has been established to optimize the effects of WBV, including the determination of vibration frequency and amplitude. In addition, the majority of previous studies have investigated the effects of WBV training on the extremities. There are few publications investigating its effectiveness on trunk and core muscle strength, which is one of the important indicators of athletic performance. Therefore, we conducted a narrative review of the literature, referring to the Cochrane Library and Medline databases, to summarize the most recent scientific evidence on the effects of whole-body vibration on trunk muscle strength. This narrative review concludes that at least 8 weeks of WBV training is more effective on trunk muscle strength than those performing the same exercises without WBV

    Do Personality Traits Matter in Preferences of Translation Strategies?

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    Translation is closely related to languages, linguistics, pragmatics, sociolinguistics, culture etc. and because of these relations, there are also a lot of theories which give importance either to source language or target language. Linguistic and other features of the source and target texts have been examined for years. But translator is an important element with an important role in translation process as well, and the influence of translatorsÔÇÖ personality traits on their translation has been emphasized. Therefore, the aim of the current study is to investigate whether there are relations between translatorsÔÇÖ personality characters and their translation strategy preferences. The BFI Test (Big Five-Factor Inventory) is administered to 28 English Translation and Interpreting students at Cappadocia University to determine the personality traits of the participants. Then they are asked to choose one of the suggested translations in accordance with the translation model. The data are analyzed through SPSS (v. 22). The findings indicate that there are significant relationships between personality traits of participants and their use of translation strategies. According to results, agreeableness personality trait has a significant relationship with borrowing strategy, openness and neuroticism have significant relationships with modulation strategy, and conscientiousness has a significant relationship with adaptation strategy. Only extraversion does not correlate significantly with any of the strategies

    Carbon Collaborators

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    prOphecy sun (PhD) is an interdisciplinary performance artist, queer, movement, video, sound maker, and mother of two. Her practice celebrates both conscious and unconscious moments and the vulnerable spaces of the in-between in which art, performance, and life overlap. Her recent research has focused on ecofeminist perspectives, co-composing with voice, objects, surveillance technologies, and site-specific engagements along the Columbia Basin region and beyond. She is the Arts Editor for Ecocene: Cappadocia Journal of Environmental Humanities and a sessional faculty member at Emily Carr University of Art + Design. She performs and exhibits regularly in local, national, and international settings, music festivals, conferences, and galleries and has authored several peer-reviewed articles, book chapters, and journal publications on sound design, installation, performance, and domestic spheres

    Does the Duration of Acid Treatment Affect the Bond Strength Between Resin Cement and Zirconia?

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    Statement of the problem: The bonding between the resin cement and zirconia still needs to be improved and the effect of the experimental acid app-lication duration on the resin bond strength with zirconia is unknown. Objective: This study aimed to investigate the effect of different acid application times on the shear bond strength between zirconia and dual-cure resin cement. Materials & Methods: A total of 50 zirconia disks were prepared in 2 mm thickness and randomly divided into five treatment groups: control (no treatment was applied), 30 seconds HF:H2O:H2O2 acid application group, 60 seconds HF:H2O:H2O2 acid application group, 90 seconds HF:H2O:H2O2 acid application group, and 120 seconds HF:H2O:H2O2 acid application group. Then a dual-cure resin cement was applied over the 3 mm diameter and 3 mm thickness of the zirconia specimens. The specimens were immersed in distilled water and maintained at a temperature of 37┬░C for a duration of 24 hours. The shear bond strength tests were performed using a universal testing machine with a force of 1 mm/min until the fracture occurs, and the data were analyzed using one-way ANOVA and Tukey's post-hoc test. Results: The highest mean shear bond strength was found in the 90 se-conds acid application group, which was significantly higher than the control and 30 seconds acid application groups (P0.05). Conclusions: The use of a 60-, 90- and 120 seconds acid application can improve the bond strength between zirconia and resin cement. However, cau-tion should be taken when using this acid due to its potential toxicity and ha-zards

    The Experiences of Mothers With Bedbound Children: Care Burden

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    This study was carried out to evaluate the problems experienced by mothers with bedridden children and to determine the effects of care burdens on mothers. The study was carried out on mothers who had a bedridden child who was in the Neurology Service between November 2016 and May 2017. The data were collected through a 19-question introductory form and the caregiver burden scale developed by Zarit. The data were evaluated using a computer. In statistical analysis, t-test, analysis of variance and chi-square test were used in independent samples. A p-value less than 0.05 was considered statistically significant. The moderate age of 200 mothers participating in the study was found to be 30.8 ┬▒ 7.0 years, and the moderate care burden score was found to be 35.1 ┬▒ 24.3, and it was evaluated as mild to moderate. It was found that the younger the mother's age and the age of the child cared for, the greater the burden of care, and the longer the duration of care, the higher the burden of care. Being widowed, having a job and not having social security are factors that increase the burden of care. The effect of all these variables on burden of care was not statistically significant. The main problems that mothers experience while providing care are psychological problems and musculoskeletal problems. In order to minimize the burden of care for mothers with bedridden children, other family members should be included in the care, and parents should be supported psychologically

    A Preliminary Study of A Lactic Acid Biosensor for the Early Detection of Dental Caries

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    Statement of Problem: Many mechanisms in the formation of dental caries, but the common point of these mechanisms is the proliferation of microorganisms in the mouth and mostly on the tooth surface. Objective: Although there are approximately 200 to 300 different microorganisms in human dental plaque, Neisseria spp. and S. mutans. The common point of these microorganisms is that they produce lactic acid. In this study, it is aimed to use a biosensor, which is a bioelectrochemical measurement system that combines the measurement capability of physical analysis systems and the specificity of biochemical systems. Material-Method: In this study, lactate oxidase enzyme was immobilised on the gold working electrode surface by means of bovine serum albumin and gelatine. The enzyme was arrested on the electrode surface with the aid of the cross-linking agent glutaraldehyde. Cyclic voltammetry current scanning was performed in lactic acid biosensor preliminary studies. Optimisation studies were conducted in the current range obtained from the peak in the cyclic voltammogram. Within the scope of the optimisation studies, optimum operating temperature and optimum operating pH of the biosensor were tested. Results: An anodic peak at +0.2 V potential was obtained in the cyclic voltammogram drawn according to the reaction on the working electrode surface. In the optimisation studies conducted, it was found that the optimum operating conditions of the biosensor were at 35 ┬░C and pH 6.5. Conclusion: According to the data obtained from the pre-study of the bioelectrochemical method, the concentration of lactic acid in the solution can be determined. With the completion of further studies, a portable lactic acid biosensor can be made. As a result, as a result of the preliminary study, the lactic acid biosensors designed to determine in vitro lactic acid for the early diagnosis of dental caries in the future is promising
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