scholarly journals Wear of Ceramics Systems with Different Surface Applications in a Chewing Simulator

2020 ◽  
Vol 7 (10) ◽  
pp. 670-679
Author(s):  
Mehmet Çağatay Ulucan ◽  
Giray Bolayır ◽  
Ayşegül Saygın ◽  
Koray Soygun
Keyword(s):  
Weight Loss ◽  
Dental Materials ◽  
Surface Treatments ◽  
Highest Weight ◽  
Significant Difference ◽  
Before And After ◽  
Optical Profilometer ◽  
Substance Loss ◽  
Monolithic Zirconia ◽  
Chewing Simulator

Objective:   This study was aimed to compare the wear of four types of the ceramic dental materials with different surface treatments. Material and Methods: Porcelain (low-fusing feldspathic, monolithic zirconia, lithium disilicate glass, and leucite glass-ceramic) samples (9 x 3 mm) were prepared with different surface treatments (glazed and mechanical polished). Samples were mechanically loaded in a chewing simulator (600.000 cyles of 50N) and 64 teeth were used to simulate as the antagonist. To evaluate the wear of the samples before and after the test, samples were scanned by 3D scanner, Dental Wings 7 Series. Then they were transformed into the digital platform. Surface analysis was performed by using an optical profilometer and scanning electron microscope. A sensitive digital scale was used for weight measurements of antagonist's teeth. Results: It was a significant difference between the volume values of the groups with mechanical polish and the groups with glaze, except for zirconia samples (p<0.05). While the least change in volume and surface roughness was observed in the zirconia mechanic polished group (ZP), this change was not statistically significant (p>0.05). In terms of the weight measurement results of the antagonist teeth, while  leucite reinforced overglazed group (PRG) has the highest weight loss as a result of wear, ZP group has the least weight loss. Conclusion: It was concluded that glazed groups of ceramics lose more substances than polished groups, and that causes more wear on antagonist teeth. Zirconia ceramics showed less substance loss, and that causes less wear on antagonist teeth.

scholarly journals Influences of the selected additives on the weight loss and organoleptic properties of marinated mussels and squids

2012 ◽  
Vol 81 (3) ◽  
pp. 263-267 ◽  
Author(s):  
Metin Guldas ◽  
Canan Hecer
Keyword(s):  
Weight Loss ◽  
Salt Content ◽  
Meat Products ◽  
Organoleptic Properties ◽  
Highest Weight ◽  
Konjac Flour ◽  
Weight Gains ◽  
Before And After ◽  
Mouth Feel ◽  
First Time

Effects of seven different solutions prepared from various additives (carrageenan, konjac flour, phosphate, yeast extract, xanthan gum and maltodextrin) were used to test for the first time in the marination of experimental seafood. The additives were added into the marination solutions and the samples were analyzed before and after marination. Statistically, the experimental solutions did not cause significant changes in pH, acidity and salt content of the samples (P < 0.05). The highest weight gains were obtained from the solution which contained 0.1% of konjac flour (E425 I) as 4.01, 5.21, 4.61 and 4.88 % in the mussels, big squids, diced squids and small squids, respectively. However, this solution was not preferred by the panellists because of its sticky texture. Inversely to red meat products, the solution containing phosphate caused weight loss during marination. The results indicate that the solution containing 0.2% carrageenan LM (low methoxyl) was the best solution in the marination process. Dipping into this solution caused weight gains of 4.69, 2.98, 4.04 and 2.78% in the big squids, the mussels, the small squids and the diced squids, respectively (P < 0.01). The organoleptic properties (mouth feel, flavour and softness) of mussels and squids were also improved by carrageenan LM addition.

scholarly journals Sleeve Gastrectomy vs. Fundus Resection in Bariatric Surgery (Animal Study)

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Alimohammad Bananzadeh ◽  
Seyed Vahid Hosseini ◽  
Hajar Khazraei ◽  
Mohammad Mehdi Lashkarizadeh ◽  
Leila Ghahramani ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Weight Loss ◽  
Sleeve Gastrectomy ◽  
Body Weight Loss ◽  
Test Results ◽  
Significant Difference ◽  
Before And After ◽  
Total Ghrelin ◽  
The Difference ◽  
High Level

Background: Bariatric surgery has resulted in body weight loss, which claimed by surgery removal specific parts of the stomach with enzyme or sleeve gastrectomy. Objectives: The aim of this study is to determine weight loss and endocrine changes by 12-week fundus resection and sleeve gastrectomy in rabbits. Methods: Twenty-one rabbits, weighing 2.5 - 3.5 kg, were divided into three groups (n = 7): sleeve gastrectomy, experimental fundus resection, and sham group. The weight of rabbits and total ghrelin and leptin levels in the plasma before and after surgery were measured in 12 weeks. Statistical analyses were performed using the Kruskal-Walis test for comparison of the means between the groups, and the difference after months in one group was assayed by Friedman test. Results: The results showed sleeve gastrectomy had a significant weight loss after one month when compared to fundus resection and sham-operated controls (P = 0.008). There was no significant difference in the ghrelin levels after these surgeries, but leptin levels decreased significantly after the fundectomy (P = 0.025). Conclusions: Sleeve gastrectomy is more efficient than the fundus resection in weight loss. It could be suggested as a new option in metabolic disorders due to the high level of leptin.

scholarly journals Effect of Grinding and Subsequent Various Surface Treatments on the Surface Roughness of Full Contour Monolithic Zirconia

2021 ◽  
Vol 10 (32) ◽  
pp. 2624-2628
Author(s):  
Surya Teja ◽  
Sanath Kumar Shetty ◽  
Mohammed Mohammed ◽  
Karkala Syed ◽  
Uma Mayoor ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Treatments ◽  
Control Group ◽  
Dental Procedures ◽  
Significant Difference ◽  
Monolithic Zirconia ◽  
Spss Software ◽  
Natural Dentition ◽  
Post Hoc ◽  
Control Group Group

BACKGROUND A smooth zirconia surface is necessary to protect the opposing natural dentition, to prevent plaque accumulation and to increase the survival rate of restoration by reducing the chances of failure by crack propagation. Surface roughness can be incorporated by routine dental procedures done in labs and clinics to adjust the restoration. It is unclear which surface treatment is most appropriate to achieve clinically acceptable zirconia surface. The purpose of this study was to evaluate the effect of grinding and subsequent various surface treatments on the surface roughness of full contour monolithic zirconia. METHODS In this invitro study 10 zirconia bars of final dimensions 20 x 4 x 2 mm & 40 zirconia bars of final dimensions 20 x 4 x 2.2 mm were milled and sintered. The zirconia bars with final dimensions 20 x 4 x 2mm were glazed and selected as samples for control group (Group C) (n = 10). Forty zirconia bars with dimensions of 20 x 4 x 2.2 mm were grounded using a standard straight cylindrical diamond point (105 – 125 µm) by placing them in a customized grinding apparatus till the dimensions became similar to that of control group i.e. 20 x 4 x 2 mm. After grinding and confirming the dimensions of each full contour monolithic zirconia bar using digital vernier caliper, zirconia bars were randomly allocated into 4 groups with 10 samples in each group (n = 10), namely (Group G: Grinding only, Group G+R: Grinding & Reheating, Group G+G: Grinding & Glazing, Group G+P: Grinding & Polishing) respectively. Surface roughness values were measured using a profilometer. Differences between groups were examined using one-way analysis of variance (ANOVA) (P ≤ 0.05) and Post hoc Tukey HSD test was done for multiple comparisons of surface roughness in between the groups using Statistical Package for Social Sciences (SPSS) software. RESULTS Group C showed the least surface roughness values. The maximum surface roughness values were seen in Group G. Surface roughness of Group G, Group G + H and Group G + G were statistically significant from Group C and Group G + P. There was no statistically significant difference in surface roughness values between Group C and Group G + P. CONCLUSIONS It can be concluded that polishing after grinding significantly reduced the surface roughness and re-established the surface smoothness of full-contour monolithic zirconia bars. KEY WORDS Surface Roughness, Zirconia, Monolithic, Full Contour, Profilometer

scholarly journals Pengaruh Terapi Gizi Klinik Intensif Terhadap Penurunan Berat Badan, Komposisi Tubuh, dan Profil Lipid pada Remaja Overweight dan Obesitas

2019 ◽  
Vol 7 (1) ◽  
pp. 88-95
Author(s):  
Rita Halim ◽  
Raihanah Suzan ◽  
Maria Estela Karolina
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Lipid Profile ◽  
Age Groups ◽  
Nutrition Therapy ◽  
Nutritional Intervention ◽  
Case Control ◽  
Obese Adolescents ◽  
Significant Difference ◽  
Before And After

ABSTRACT Background: Current nutritional status issues are no longer focused on malnutrition, but also on excess nutrition that can occur in all age groups, especially vulnerable to occur at a young age. Objective: to assess the effect of intensive clinical nutrition therapy on weight loss, body composition and lipid profile in overweight and obese adolescents. Method: This study was a case control study and was carried out during the months of August - September 2018, where the sample of the study would be antopometric examination, body composition and lipid profile before and after the intervention. Results: there was no significant difference in the effect of intervention between intensive nutrition therapy compared to only nutrition counseling in weight loss, body composition, and lipid profile. Conclusion: Nutritional intervention in the form of intensive nutrition therapy and counseling conducted in this study had significant results in weight loss, lipid profile and body composition in overweight and obese adolescents, although no significant effect was found on the two interventions. Keywords: Nutritional intervention, weight loss, body compotition, lipid profile, overweight, obesitas   ABSTRAK Latar belakang: Permasalahan status gizi saat ini bukan lagi hanya terpusat pada kekurangan gizi saja, namun juga pada kelebihan gizi yang dapat terjadi pada semua golongan usia, terutama rentan terjadi pada usia muda. Tujuan: menilai pengaruh terapi gizi klinik intensif terhadap penurunan berat badan, komposisi tubuh dan profil lipid pada remaja overweight dan obesitas. Metode: Penelitian ini merupakan penelitian case control dan dilakukan selama bulan Agustus – September 2018, dimana sampel penelitian akan dilakukan pemeriksaan antopometri, komposisi tubuh dan profil lipid sebelum dan sesudah intervensi. Hasil: tidak terdapat perbedaan pengaruh intervensi secara bermakna antara terapi gizi intensif dibandingkan dengan hanya penyuluhan gizi saja dalam menurunkan berat badan, komposisi tubuh, dan profil lipid. Kesimpulan : intervensi gizi berupa terapi gizi intensif dan penyuluhan yang dilakukan pada penelitian ini memiliki hasil yang bermakna terhadap penurunan berat badan, profil lipid dan komposisi tubuh pada remaja overweight dan obesitas walaupun tidak ditemukan perbedaan yang bermakna dari kedua intervensi tersebut. Kata Kunci: intervensi gizi, penurunan berat badan, komposisi tubuh, profil lipid, overweight, obesitas

scholarly journals Antifungal Effectiveness of Pyrolytic Oil Obtained from Triplochiton scleroxylon (De. Wild) Sawdust on Selected Wood Species

2020 ◽  
pp. 8-13 ◽  
Author(s):  
F. B. Okanlawon ◽  
O. A. Adegoke ◽  
O. A. Olatunji ◽  
J. K. Abiola
Keyword(s):  
Weight Loss ◽  
Analysis Of Variance ◽  
Wood Species ◽  
Brown Rot ◽  
Brown Rot Fungi ◽  
Highest Weight ◽  
Significant Difference ◽  
Pyrolytic Oil ◽  
Percentage Absorption ◽  
Variance Result

The present study was carried out to investigate the effectiveness of pyrolytic oil obtained from Triplochion scleroxylon sawdust which used as a preservative against fungi attack on Alstonia bonnei, Ceiba pentandra, Pterocarpus osun, Terminalia randii, Triplochiton scleroxylon wood. The wood samples used for the experiment were dimensioned into 20 x 20 x 60 mm and soaked for 72 hours to obtain appreciable absorption. The percentage absorption after soaking and weight loss after exposure to termite were determined. Data were analyzed using simple statistics and analysis of variance at α0.05. The highest and lowest percentage absorption was recorded for Terminalia randii and Alstonia bonnie with 23.20 % and 13.10 % respectively. Analysis of variance result indicates the significant difference in wood species used. The result obtained for weight loss revealed significant differences in wood species as well as in fungi also.  The result further showed that those are taken as control recorded the highest weight loss to white and brown rot fungi. Pyrolytic oil possesses a great potential in the prevention of fungi attack as it contained phenolic compound.

scholarly journals Evaluation of insulin sensitivity with a new lipid-based index in non-diabetic postmenopausal overweight and obese women before and after a weight loss intervention

2009 ◽  
Vol 161 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Barbara Antuna-Puente ◽  
Emmanuel Disse ◽  
May Faraj ◽  
Marie-Eve Lavoie ◽  
Martine Laville ◽  
...  
Keyword(s):  
Weight Loss ◽  
Insulin Sensitivity ◽  
Weight Loss Program ◽  
Model Assessment ◽  
Weight Loss Intervention ◽  
Obese Women ◽  
Insulin Resistant ◽  
Significant Difference ◽  
Before And After ◽  
Post Menopausal

ObjectiveTo evaluate the validity of a new lipid-based index (Disse index) in assessing insulin sensitivity (IS) compared with the hyperinsulinemic-euglycemic (HIEG) clamp in overweight and obese, non-diabetic, postmenopausal women, before and after a weight loss intervention.Research design and methodsAssociation between Disse index and the HIEG clamp was evaluated in 86 non-diabetic postmenopausal overweight and obese women before and after weight loss. Percentage changes (%Δ) were calculated for several fasting indices and compared with %Δ of HIEG clamp.ResultsWe observed a strong correlation between Disse index and HIEG clamp (r=0.69, P<0.001). This association was higher than those of homeostasis model assessment (HOMA), quantitative insulin sensitivity check index (QUICKI), and McAuley indices while no significant difference was observed with Revised-QUICKI. Percent change of Disse index (pre- versus post-weight loss program) was significantly correlated with %Δ of HIEG clamp (r=0.34, P<0.01). This correlation was similar to those observed for the other indices tested.ConclusionsWe validated the reliability of Disse index in assessing IS in non-diabetic post-menopausal overweight and obese women, before and after weight loss intervention. Disse index may be useful not only for insulin resistant diagnostics in this type of population, but also for the IS follow-up after a weight-loss program and weight stabilization. The presence of lipid elements in this fasting index improves the estimation of IS in overweight and obese non-diabetic post-menopausal women and could add more information about peripheral IS.

scholarly journals Wear Behavior of Monolithic Zirconia against Natural Teeth in Comparison to Two Glass Ceramics with two Surface Finishing Protocols: An In-Vitro Study

2020 ◽  
Vol 23 (2) ◽  
Author(s):  
Dina Kamal Abouelenien ◽  
Hany Halim Nasr ◽  
Hanaa Zaghloul
Keyword(s):  
Weight Loss ◽  
Surface Finish ◽  
Glass Ceramic ◽  
Wear Behavior ◽  
Ceramic Materials ◽  
Surface Finishing ◽  
Group I ◽  
Significant Difference ◽  
Monolithic Zirconia ◽  
Natural Tooth

Objective: To evaluate and compare the wear behavior of three different ceramic systems; monolithic zirconia, lithium di-silicate and nano-fluorapatite glass ceramic with two finishing procedures polishing and glazing, and their effect on the wear of natural tooth antagonists. Material and Methods: Forty two ceramic disc specimens (10mm x3mm) and forty two natural tooth antagonists were used. Samples were divided according to ceramic materials into 3 groups (n = 14). Group I: nano-fluorapatite glass ceramic (FLU) (IPS e.max Ceram), Group II: lithium disilicate (LD) (IPS e.max CAD) and group III: monolithic zirconia (ZIR) (ZirkoZahn Prettau). Each group was further subdivided into two subgroups (n = 7), according to the surface finish: Polishing (P) and glazing (G). Specimens were subjected to a custom designed two-body wear simulator. Quantitative wear assessment was carried out using weight loss measurements. Scanning electron microscope was used for characterization of wear patterns. Kruscal Wallis and Dunn’s tests were used to compare between weight loss of the three ceramic materials. Whitney U test was used to compare the weight loss between the two surface finish protocols. Wilcoxon Signed rank test was used to compare the weight loss between ceramic specimens and antagonist teeth (p ≤ 0.05). Paired t-test was used to compare weight loss before and after wear test. Results: After wear, LD and FLU had the highest weight loss values compared to ZIR (p < 0.05). For teeth, there was no significant difference between the weight loss values with the three materials (p > 0.05). P and G specimens showed no significant difference in weight loss values. SEM images of the wear patterns verified the previous analysis. Conclusion: ZIR is more wear resistant than LD and FLU. However, the surface treatment had no impact on the wear behavior.KEYWORDSGlass-ceramics; Monolithic; Two-body wear simulation; Wear; Zirconia.

scholarly journals Changes in Rat Weight due to Homocysteine Injection as an Animal Model of Alzheimer's Disease

2021 ◽  
Vol 5 (1) ◽  
pp. 38
Author(s):  
Amalina Rizma ◽  
Brian Wasita ◽  
Ari Probandari
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Weight Loss ◽  
Average Weight ◽  
Sprague Dawley ◽  
Weight Changes ◽  
Model Of Alzheimer’S Disease ◽  
Sprague Dawley Rats ◽  
Significant Difference ◽  
Before And After

Homocysteine in one of the compounds used to induced alzheimer’s disease in rats. Hyperhomocysteinemia triggers oxidative stress, nerve inflammation and the formation of amyloid-beta in the brain. This can affect a brain region involved in appetite regulation, which leads to weight loss. This study aimed to analyzed weight changes of rats injected with homocysteine for 7, 14 and 21 days. Nine of Sprague dawley rats, aged 8-12 weeks with weight ranging between 150-200 grams, were randomly divided into three groups. The first group was injected with homocysteine for 7 days. The second and third groups received injections with homocysteine for 14 and 21 days respectively. The rats were weighed before treatment and in 7, 14, and 21 days after homocysteine injection. The average weight of rats in each group increases of 3.33±1.15, 5.00±2.00, and 2.33±3.51 grams, respectively. There was a significant difference in weight between before and after homocysteine injection for 7 days in the first group (p=0.038) and 14 days in the second group (p=0.049), while the weight of rats in the third group did not have a significant change (p=0.369). There was no significant difference in weight among the group after homocysteine injection (p=0.182). The weight of alzheimer’s model rats increased slowly after being injected with homocysteine for 7, 14, and 21 days. The low weight gain is similar to the condition of alzheimer’s patients who generally experience weight loss. It is necessary to monitor the food intake of alzheimer’s patients to prevent further weight loss.

scholarly journals Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens

2002 ◽  
Vol 54 (1) ◽  
pp. 35-41 ◽  
Author(s):  
C.M. Mazzi ◽  
M.I.T. Ferro ◽  
A.A.D. Coelho ◽  
V.J.M. Savino ◽  
M. Macari ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Heat Stress ◽  
Heat Exposure ◽  
Body Weight Loss ◽  
The Other ◽  
Naked Neck ◽  
Significant Difference ◽  
Before And After ◽  
Slight Advantage

The variation in cloacal temperature, body weight loss and expression of the 70 kDa heat shock protein (Hsp70) in three naked neck broiler genotypes during heat stress were studied. Twelve birds of each genotype (Na/Na, Na/na and na/na) were reared to market weight (approximately 2.1kg) at thermoneutral temperature. Six birds from each group served as controls and the remaining six underwent gradual heat stress (from 28ºC to 36ºC). Cloacal temperature and body weight were measured before and after exposure to heat. Liver samples were collected and Hsp70 levels were quantified using western blotting with monoclonal anti-chicken Hsp70 antibody. Heterozygous (Na/na) birds had a significantly lower cloacal temperature variation and less body weight loss during heat stress than the other genotypes. There was no significant difference in the Hsp70 levels among the genotypes. Heterozygous birds (Na/na) appeared to have a slight advantage over the other genotypes during gradual heat stress, perhaps because of a heterotic effect.

Role of Grain Size Fluctuations on the Environmental Resistance of Alumina-Zirconia Composite in Comparison with Commercially Available Monolithic Zirconia Femoral Head

2010 ◽  
Vol 76 ◽  
pp. 235-239
Author(s):  
Nobuhiko Sugano ◽  
Giuseppe Pezzotti
Keyword(s):  
Grain Size ◽  
Femoral Head ◽  
Force Microscopy ◽  
Atomic Force ◽  
Significant Difference ◽  
In Vitro Exposure ◽  
Before And After ◽  
Moist Environment ◽  
Monolithic Zirconia

Raman microprobe spectroscopy and atomic force microscopy (AFM) were systematically used to characterize the surface of an advanced alumina/zirconia composite (henceforth also referred to as zirconia toughened alumina, ZTA), in comparison with a commercially available femoral head made of monolithic zirconia. Experiments were conducted before and after in vitro exposure in water moist environment up to 100 h. Both materials contained zirconia partly stabilized with yttria. Tetragonal-to-monoclinic phase transformation, which was quantitatively characterized by confocal Raman spectroscopy as a function of grain size, showed significant difference between the investigated samples. Such difference was similarly found with respect to both roughness level and time needed for such topologic changes to occur. Variation of phase fractions and of topologic surface parameters were plotted as a function of in vitro exposure time and compared.

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