Studies on Adhesion of Composite Resins and Glass-Ionomer Cements in Open-Sandwich Technique

2017 ◽  
Vol 68 (8) ◽  
pp. 1890-1894
Author(s):  
Cristina Angela Ghiorghe ◽  
Gianina Iovan ◽  
Sorin Andrian ◽  
Irina Nica ◽  
Claudiu Topoliceanu ◽  
...  
Keyword(s):  
Composite Resins ◽  
Control Group ◽  
Glass Ionomer ◽  
Sandwich Technique ◽  
Dye Penetration ◽  
Blue Solution ◽  
Group 2 ◽  
Materials Used ◽  
Group 1

The aim of this study was to assess the quality of the interface between dental root cement and some restorative materials used in the open sandwich technique. Standardised cavities were prepared on the buccal and oral surfaces of 30 human molars with the gingival margin situated in root cement. The teeth were randomly divided in 3 groups. Different materials combinations were used in buccal and oral cavities. In the control group, the cavities were filled only with composite resins (Filtek Z250-3M ESPE and Zmack Comp-Zermack). In the test groups the cavities were restored using an open sandwich technique as follows: in group 1 Filtek Z250 in combination with Dyract, respectively Ketac Molar Easymix; in group 2 Zmack Comp in combination with Dyract, respectively Ketac Molar. The teeth were stored in 1% methylene blue solution, for 24 hours. The samples were longitudinally sectioned through the centre of restorations and the degree of dye penetration as well as the morphology of the interface between the root cement and the restorative material were evaluated by optical microscopy and SEM. The results showed less microleakage and and adhesive failures in open sandwich restorations with Zmack Comp and Dyract combination.

scholarly journals Superficial dye penetration of two conventional ionomers used as dental fissures sealants

2021 ◽  
Author(s):  
Marcella C. B. Malta ◽  
Márcia R. T. C. Andrade ◽  
Mirian de W. S. de Marsillac ◽  
Luiz H. M. Prates ◽  
Ricardo de S. Vieira
Keyword(s):  
Control Group ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Methylene Blue Solution ◽  
Dye Penetration ◽  
Ph Cycling ◽  
Blue Solution ◽  
The Difference ◽  
Group 1 ◽  
Standard Disk

Objective: This study aimed to evaluate surface dye penetration of two conventional glass ionomer cements (GIC), one of them a high viscous ionomer. Methods: 20 standard disk samples measuring 2 mm thick and 4 mm in diameter were made for each conventional GIC. The high viscous ionomer was used as the control (Group 1). Samples were embedded in wax and submitted to pH cycling for 7 days simulating a high cariogenic challenge in a kiln (37ºC). All samples were brushed with an extra-soft bristles infant toothbrush to mimic oral hygiene after exposure to a demineralizing solution for 6 hours. The samples were immersed in a 1% methylene blue solution for 2 hours at the end of cycling. The Mann-Whitney Rank Sum Test was used to analyze the difference between the two GIC. Results: All samples disclosed a superficial dye penetration of 0.6 to 1.5 mm depth. There was no statistical d ifference b etween t he G IC t ested ( p = 0.883). Conclusion: Both GIC tested in this study exhibited superficial dye penetration to depths of at least until their superficial third.

Effect of cortexin on the quality of life in the early rehabilitative period after hemispheric ischemic stroke

2016 ◽  
Vol 94 (2) ◽  
pp. 138-143
Author(s):  
Ludmila A. Belova ◽  
V. V. Mashin ◽  
V. V. Abramova ◽  
A. N. Proshin ◽  
A. N. Ovsyannikova
Keyword(s):  
Quality Of Life ◽  
Ischemic Stroke ◽  
Low Dose ◽  
Neuroprotective Effect ◽  
Control Group ◽  
Sf 36 ◽  
Group 2 ◽  
And Control ◽  
Group 1

Aim. To study the neuroprotective effect of a repeated course of low dose cortexin therapy on the quality of life in the early rehabilitative period after hemispheric ischemic stroke (IS). Materials and methods. 90 patients were divided into group 1 treated with cortexin (10 mg i/m twice daily (morning and afternoon) in addition to basal treatment, group 2 given the repeated course of the same treatment, and control group (basal therapy alone). The standard SF-36 questionnaire was used to assess the quality of life. Results. Treatment of patients following acute hemispheric ischemic stroke with cortexin (10 mg i/m twice daily) and the repeated course of the same treatment after 10 days resulted in the accelerated and more complete normalization of the quality of life in the early rehabilitation petriod (starting from days 21-27 days after the onset of disease) than in the patients given a single course of cortexin therapy or basal treatment alone.

scholarly journals Effects of feeding garlic powder on growth performance and meat quality of broiler

2016 ◽  
Vol 45 (2) ◽  
pp. 79-83
Author(s):  
MS Ali ◽  
M Kamruzzaman ◽  
ZH Khandaker
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Basal Diet ◽  
Control Group ◽  
Broiler Chicks ◽  
Fat Percentage ◽  
Garlic Powder ◽  
Group 2 ◽  
Group 1

An experiment was conducted with 60 day old Cobb-500 broiler chicks for a period of 28 days with the aims of investigating the effects of different level of garlic powder on growth performance, carcass characteristics and meat quality of broilers to produce safe broiler meat. The experimental broiler chicks were divided randomly into four different groups with three replications having 5 chicks in each. Maize-soybean based diet was used as basal diet for group 1. Basal diet was supplemented with 1%, 2% and 3% garlic powder on fresh basis for group 2, 3, and 4 respectively. The broiler of groups 2, 3, and 4 were showed significantly (p>0.05) higher body weight than control group at 4 weeks of age. Feed conversion ratio of group 2, 3, and 4 were significantly (p>0.05) lower than group 1. Group 2 was given significantly lower fat percentage than other groups. Group 3 and 4 showed more or less similar fat content but lower than control groups. Thus, it may be concluded that garlic powder may be used in chicken diet.Bang. J. Anim. Sci. 2016. 45 (2): 79-83

scholarly journals Experience of patient preparation for colonoscopy and colonic surgery with sodium phosphate

2020 ◽  
pp. 220-223
Author(s):  
S. E. Katorkin ◽  
P. S. Andreev ◽  
S. Yu. Berezkina ◽  
O. E. Davydova
Keyword(s):  
Colon Cancer ◽  
Sodium Phosphate ◽  
Control Group ◽  
Intestinal Bleeding ◽  
Organoleptic Properties ◽  
Internal Hemorrhoids ◽  
Patient Preparation ◽  
Group 2 ◽  
Group 1

The article presents the experience of using sodium phosphate in patients, who were treated at the Clinic of Hospital Surgery of the Samara State Medical University Clinics in 2019.Purpose of the study: evaluate the quality of patient preparation for colonoscopy with sodium phosphate in surgical hospital environment. Material and methods. A total of 50 patients who were admitted for emergency indications to the Clinic of Hospital Surgery in 2019 were enrolled in the study. All patients were divided into two groups.The study included patients aged 24 to 69 years. The median age was 55.1 years in the treatment group and 56.2 years in the control group (p = 0.06). Men predominated in both groups: 16 (64%) in group 1 and 18 (72%) in group 2 (p = 0.08). The average time for submitting complaints about intestinal bleeding before seeking medical aid was 1.0 ± 0.70 days in the treatment group and 1.0 ± 0.35 days in the control group (p = 0.92). Group 1 included 25 patients, who were preparing for colonoscopy with sodium phosphate, Group 2 included 25 patients who were preparing for the examination with Macrogol.Results: the preparation quality was evaluated using the Boston Bowel Preparation Scale. Initially, the treatment and control groups did not have any statistically significant differences in all studied parameters. The colonoscopy identified the following nosologies. In Group 1, 9 patients had a diverticular disease of the colon; 4 – colon cancer; 12 patients continued treatment of grade 2–3 chronic internal hemorrhoids. In Group 2, the patients were distributed as follows: 10 patients were diagnosed with diverticular disease of the colon; 4 – colon cancer; 1 – an adenomatous polyp of the transverse colon and 10 patients had grade 2–3 chronic internal hemorrhoids. In addition, all patients filled out the questionnaire, which showed that the use of sodium phosphate is more convenient for the patient not only in terms of the dosage, but also due to relatively pleasant organoleptic properties. After examination of the colon, 45 patients received conservative treatment, five were operated following the colonoscopy and preoperative preparation.Conclusion: we believe that the quality of preparation of patients with intestinal bleeding with sodium sulphate and Macrogol does not differ, however, sodium sulfate is preferable because of its more pleasant organoleptic properties and the smaller volume of solution used.

scholarly journals Pengaruh pemberian kopi terhadap kualitas spermatozoa tikus wistar (Rattus norvegicus) yang terpapar stres

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Risnawati A. Haris ◽  
Lydia Tendean ◽  
Grace Turalaki
Keyword(s):  
Treatment Group ◽  
Wistar Rats ◽  
Control Group ◽  
Control Group Design ◽  
Group Design ◽  
Post Test ◽  
Group 2 ◽  
Light Form ◽  
Group 1

Abstract: The coffee beans composed of the compound caffeine, palmitic acid, linoleic acid and acid stearic. The content of caffeine in coffee can improve spermatozoa motility that are not motile by inhibiting cyclic nucleotide phosphodiesterase and affects the intracellular levels of cyclic AMP. Spermatozoa quality can be affected by various factors such as stress. In nocturnal animals, dark periode becomes a signal to do activity by suprachiasmatic nucleus. The change in activity of the nocturnal animals from initial condition in the dark then exposed to light can leads to stress. This study was aimed to determine the effect of coffee on the spermatozoa quality of wistar rats which had been exposed to stress. This was an experimental analytical study with a post-test only control group design. The study was conducted for 50 days from September to November 2016. The sample consisted of 9 rats divided into three groups: a control group (P0) is given only exposure to stress in the form of light, the treatment group 1 (P1) is given exposure to stress in the light form and liquid coffee 1 ml / kg and the treatment group 2 (P2) is given exposure to stress in the light form and coffee extracts. The results showed that there were significant differences in the concentration and motility treatment group 1 (P1) to the control group (P0) which is p <0.05 and significant differences in sperm motility treatment group 2 (P2) to the control group (P0) which is p <0.05. Conclusion: Coffee administration could improve the quality of spermatozoa of wistar rats exposed to stress.Keywords: stress, coffee, quality of spermatozoa. Abstrak: Biji kopi tersusun dari senyawa kafein, asam palmatik, asam linoleat dan asam stearik. Kandungan kafein yang terdapat didalam kopi mampu meningkatkan motilitas spermatozoa yang tidak motil dengan cara menghambat siklus nukleotida fosfodiesterase dan mempengaruhi level intraseluler dari siklus AMP. Kualitas spermatozoa juga dapat dipengaruhi oleh berbagai faktor lain seperti stres. Pada hewan nokturnal periode gelap menjadi sinyal untuk beraktiftas dilakukan oleh suprachiasmatic nucleus. Perubahan aktivitas pada hewan nokturnal dari kondisi awalnya ditempat yang gelap lalu diberikan paparan cahaya dapat menyebabkan terjadinya stres. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian kopi terhadap kualitas spermatozoa tikus wistar yang terpapar stres. Jenis penelitian ialah eksperimental analitik dengan post-test only control group design. Penelitian dilakukan selama 50 hari dari bulan September – November 2016. Sampel sebanyak 9 ekor tikus dibagi menjadi tiga kelompok yaitu : kelompok kontrol (P0) hanya diberikan paparan stres berupa cahaya, kelompok perlakuan 1 (P1) diberikan paparan stres berupa cahaya dan cairan kopi 1 mL/KgBb dan kelompok perlakuan 2 (P2) diberikan paparan stres berupa cahaya dan ekstrak kopi. Hasil penelitian menunjukkan adanya perbedaan yang signifikan pada konsentrasi dan motilitas spermatozoa kelompok perlakuan 1 (P1) terhadap kelompok kontrol (P0) yaitu p<0,05 dan perbedaan yang signifikan pada motilitas spermatozoa kelompok perlakuan 2 (P2) terhadap kelompok kontrol (P0) yaitu p<0,05. Simpulan: Pemberian kopi meningkatkan kualitas spermatozoa yang terpapar stres. Kata kunci: stres, kopi, kualitas spermatozoa

Possibilities of Complex Rehabilitation of Patients with Type 2 Diabetes and Concomitant Chronic Pancreatitis in Ambulatory Practice

2021 ◽  
Vol 63 (1) ◽  
pp. 33-37
Author(s):  
Liliya S. Babinets ◽  
Halyna M. Sasyk ◽  
Iryna M. Halabitska ◽  
Victoria R. Mykuliak
Keyword(s):  
Quality Of Life ◽  
Type 2 Diabetes ◽  
Chronic Pancreatitis ◽  
Control Group ◽  
Important Place ◽  
Sf 36 ◽  
Group 2 ◽  
Group 1

Introduction: An important place in the formation of the rehabilitation program is occupied by non-drug methods, such as physiotherapy, reflexology, spa treatment, the use of which improves the effectiveness of correction of complications, reduces drug load, allows to achieve sustainable compensation for diabetes and chronic pancreatitis (CP), and also improves life quality suffering from such comorbidity. Aim: to investigate the effectiveness of the use of acupuncture in the complex rehabilitation of patients with type 2 diabetes in combination with chronic pancreatitis based on an assessment of the quality of life (QOL) and clinical parameters. Material and Methods: 60 patients with type 2 diabetes in combination with CP were examined and divided into 2 groups. The average age of the patients was (52.86±0.83) years. Control group – 15 healthy persons. To evaluate QOL, a questionnaire was interviewed using the SF-36 questionnaire in treatment dynamics. All patients with type 2 diabetes in combination with CP received adequate conventional therapy. In addition to the treatment, the patients of group II received the acupuncture course according to the methodology, which was formed on the basis of the experience of the Kyiv School of reflexology (EL Macheret et al.) and the Beijing School (Kong Lin). Results: Faecal α-elastase levels increased by 14.9% in group 1, by 25.6% in group 2, blood glucose decreased by 9.2% in group 1 and by 19.5% in group 2, HbA1c level – by 4.9% in Group 1 and by 12.2% in Group 2, changes in coprogram parameters in points – by 24.5% in Group 1 and by 55.2% in Group 2. According to the SF-36 scales, there was a positive dynamics of quality of life in patients of both groups. In group 2, there was a more significant positive trend in the total indicator of mental status (increased by 17.75% (p <0.001) versus 8.71% (p <0.005) in the group 1, respectively) and physical status (increased by 2.59% ( p <0.05) versus 7.19% (p <0.05)). Conclusions: Improved exocrine and endocrine functions of the pancreas, as well as improved quality of life in patients treated with a course of acupuncture increase the efficiency of complex rehabilitation of patients with type 2 diabetes in combination with CP was found.

scholarly journals Influence of Chromium and Cadmium Addition on Quality of Japanese Quail Eggs

2008 ◽  
Vol 77 (4) ◽  
pp. 503-508 ◽  
Author(s):  
M. Skalická ◽  
B. Koréneková ◽  
P. Naď ◽  
J. Šály
Keyword(s):  
Japanese Quail ◽  
Egg Yolk ◽  
Control Group ◽  
Egg Mass ◽  
Negative Effect ◽  
Group 3 ◽  
Group 2 ◽  
Positive Effect ◽  
Group 1

The experiment was conducted to evaluate the effect of chromium (Cr) and cadmium (Cd) on the quality of Japanese quail eggs. The birds (n = 60) were divided into 3 groups of 20 animals each. Group 1 was the control group. Group 2 was administered 0.12 mg Cr/day (Cr group) per quail in drinking water, whereas Group 3 was given a combination of 0.12 mg Cd and 0.12 mg Cr/ day (Cd-Cr group). The distribution of Cd in eggs, the egg mass, and the strength and thickness of shells was determined after after Day 35 and 58 of administration. Addition of Cr had a positive effect on the weight of eggs. A significant decrease of eggshell strength (p < 0.05) and thickness was found after Day 35 and 58 of the experiment in the Cd-Cr group (3) in comparison to the Cr-only group (2) and the control group (1). The content of Cd was significantly lower (p < 0.05) in eggshells and in the egg yolk from the Cr-only group (2) in comparison to the Cd-Cr group (3) and the control group (1). The data show that addition of Cr can improve quality indicators of quail eggs and eliminate the negative effect of Cd.

scholarly journals Effect of different post-cure polymerization treatment on composite resin hardness

2015 ◽  
Vol 63 (4) ◽  
pp. 426-431
Author(s):  
Ariani Rodrigues DIMER ◽  
Guilherme Anziliero AROSSI ◽  
Leonardo Haerter dos SANTOS ◽  
Diego Rafael KAPPAUN
Keyword(s):  
Composite Resin ◽  
Hardness Test ◽  
Composite Resins ◽  
Control Group ◽  
Group 4 ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Vickers Hardness Test ◽  
Group 1

Objective: To evaluate the influence of different additional polymerization methods on the microhardness of two direct composite resins. Methods: Direct Composite resins samples (Fill Magic and Opallis) and a Laboratory Composite Resin (Ceramage) were lightcured according to manufacturer instructions. Then, the direct resins were submitted to additional polymerization. Experimental groups were divided into (n = 5): group 1: Conventional Polymerization; group 2: Extra Light (80s); group 3: Autoclave; group 4: Laboratory Resin Ceramage. Vickers hardness test was carried out after a week of light-free storage in water, and results were subjected to ANOVA / Tukey statistical analysis. Results: Resin Lab Ceramage showed higher astatistically significant microhardness within all other resins in this study (p £ 0.05); Fill Magic showed no statistically significant difference between the groups tested compared to its control (p> 0.05); Opallis resin submitted to autoclave was the only method that showed a higher statistically significant difference compared to the control group (p £ 0.05). Conclusion: It concludes that hardness of a direct composite resin tested - Opallis - was increased by Autoclave post-cure polymerization, however, not enough to achieve the hardness of a laboratory composite. Furthermore, increasing lightcuring time does not produce a harder surface.

scholarly journals Microfiltration on two sealing materials used for non vital teeth withening

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
Herney Garzón ◽  
Maria del pilar Pérez ◽  
Adriana Monedero ◽  
Elsa Velásquez
Keyword(s):  
Root Resorption ◽  
Root Surface ◽  
Endodontic Treatment ◽  
Glass Ionomer ◽  
Group 2 ◽  
Materials Used ◽  
Dental Whitening ◽  
Improve Patient ◽  
Sealing Materials ◽  
Group 1

Summary: Internal dental whitening is a procedure to improve patient´s aestethetic through removalof crown surface stains. External cervical resorption is one of the main disadventages andconsequence of dental withening. This pilot study looked for a possible communication between thepulpar camera and the root surface by measuring microfiltration of the bleaching agent among twoendodontic sealing materials. 16 single rooted premolars were studied using standard andconventional endodontic treatment. There was tree experimental groups. Group 1 was a 4 teeth sealed2 with glass ionomer and the rest (2 teeth) with fluid resin. Group 2 contained 6 teeth sealedinmediately after endodontic treatment, 3 with fluid resin and the rest with galls ionomer. Group 3was composed by 6 teeth sealed one week after endodontic treatment sealed 3 with fluid resin ansanother 3 with glass ionomer. Teeth groups 2 and 3 were exposed to internal bleaching with sodiumperborate and 30% hydrogen peroxide all teeth specimens were stained with methylene blue and afterembebed under epoxic resin and cotted with microtome and analised under the stereoscophicmicroscope. The conclusion, all teeth showed dye percolation of the bleachy agent towards the root,with one tooth exception sealend with glass ionomer belong to the group in wich the procedure wasperformed one week after endodontic treatment. Key words: Internal whitening. Hydrogene peroxide.Internal root resorption.

scholarly journals Memory Buttons in Combination with Mobile Application-Induced Objective and Subjective Effects in Patients with Atopic Dermatitis

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Kristina M. Joergensen ◽  
Christian Vestergaard ◽  
Morten S. Joergensen ◽  
Aleksander Eiken ◽  
Martin Malmstedt-Miller ◽  
...  
Keyword(s):  
Atopic Dermatitis ◽  
Mobile Application ◽  
Subjective Effects ◽  
Skin Condition ◽  
Control Group ◽  
Group 3 ◽  
Group 2 ◽  
Chronic Skin ◽  
Group 1

Background. Atopic dermatitis (AD) is a chronic skin condition where nonadherence often results in lack of disease control. Objective. We wanted to determine whether the combination of an electronic memory button and a supportive application (app) would affect the Quality of Life and subjective and objective severity measures among AD patients over one month following the patient’s normal schedules of treatment. Methods. A randomized, investigator-blinded, prospective observational feasibility study for one month where patients diagnosed with AD were randomized based on POEM severity score and divided into 3 groups. The 3 groups were (1) the control group with two consultations, (2) in addition to group 1, patients also received electronic memory buttons to click every time they used their topical products, and (3) in addition to group 2, patients also received an app to track their treatment schedules. At both consultations, patients were evaluated using SCORAD, EASI, POEM, and DLQI. Results. 96 patients were enrolled and randomized, of which 83 patients completed the study. EASI and SCORAD scores were lower in all groups at 2nd consultation (p<0.05); however, these were highly significant for group 3 (p<0.005), and for EASI between groups 2 and 3 (p<0.05). The POEM score decreased significantly in group 3 (p=0.024), and no difference was found in DLQI between visits. Conclusion. A reduction in severity following objective assessments of the AD was observed for all groups and was highly significant for patients offered a memory button and the corresponding app. Furthermore, patients reported a significant subjective beneficial effect if they used the memory button and app. This indicates that digital solutions may have a benefit in clinical practice and may reduce nonadherence and increase the wellbeing of the patients.

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