scholarly journals The Impact of Artificial Aging on the Color Stability and Hardness of Nanocomposite Resin

2021 ◽  
Vol 8 ◽  
Author(s):  
Likai Wang ◽  
Yan Zheng
Keyword(s):  
Artificial Aging ◽  
Color Stability ◽  
Color Difference ◽  
Before And After ◽  
Group A ◽  
Hardness Change ◽  
The Difference ◽  
American Society ◽  
Group B ◽  
The Impact

Objective: This study aimed to investigate the impact of artificial aging on the color stability and hardness of nanocomposite resin.Methods: Four nanocomposite resin materials were used: Filtek Z350 XT (FZ), Synergy D6 (SD), Grandio (GD), and Clearfil Majesty Esthetic (CM). Thirty specimens were created from each material, which were divided into three (A,B,C) groups of 10 specimens each. For each material, the values of visual lightness (L*), degree of redness and greenness (a*), and degree of yellowness and blueness (b*) of the specimens in group A before and after aging, as well as the hardness of the specimens in group B before aging and in group C after aging, were measured. The American Society for Testing and Materials (ASTM) G155 Cycle 1 standard was adopted to test the aging of the specimens. The color difference (ΔE00) value and hardness difference (ΔH) value of the specimens before and after aging were calculated.Results: Aging was found to have an impact on the ΔE00 values of the resin materials in each group (H = 17.6, p = 0.001), and the hardness of the specimens in each group after artificial aging was significantly higher than before aging (p < 0.05). The difference in ΔE00 between the FZ group and the SD, GD, and CM groups was statistically significant (p < 0.05). The FZ group had the highest ΔE00 values. There was no correlation between ΔE00 and the hardness change percentage after aging (r = 0.114).Conclusion: Among the four nanocomposite resins tested in this study, except for Filtek Z350 XT’s ΔE00 values (>1.8) in the clinically unacceptable range, the remaining three kinds of resin ΔE00 values (<1.8) were all in the clinically acceptable range. The hardness of the four nanocomposite resins increased after aging. The results of the present study revealed that there was no correlation between ΔE00 and hardness change percentage in the four nanocomposite resin materials after aging.

scholarly journals Anal sphincter dysfunction in multiple sclerosis: an observation manometric study

Open Medicine ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. 509-517 ◽  
Author(s):  
Silvia Marola ◽  
Alessia Ferrarese ◽  
Enrico Gibin ◽  
Marco Capobianco ◽  
Antonio Bertolotto ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Fecal Incontinence ◽  
Anal Pressure ◽  
Before And After ◽  
Group A ◽  
The Difference ◽  
Resting Anal Pressure ◽  
Group B ◽  
Multiple Sclerosis Patients ◽  
Group D

AbstractConstipation, obstructed defecation, and fecal incontinence are frequent complaints in multiple sclerosis. The literature on the pathophysiological mechanisms underlying these disorders is scant. Using anorectal manometry, we compared the anorectal function in patients with and without multiple sclerosis.136 patients referred from our Center for Multiple Sclerosis to the Coloproctology Outpatient Clinic, between January 2005 and December 2011, were enrolled. The patients were divided into four groups: multiple sclerosis patients with constipation (group A); multiple sclerosis patients with fecal incontinence (group B); non-multiple sclerosis patients with constipation (group C); non-multiple sclerosis patients with fecal incontinence (group D). Anorectal manometry was performed to measure: resting anal pressure; maximum squeeze pressure; rectoanal inhibitory reflex; filling pressure and urge pressure. The difference between resting anal pressure before and after maximum squeeze maneuvers was defined as the change in resting anal pressure calculated for each patient.ResultsGroup A patients were noted to have greater sphincter hypotonia at rest and during contraction compared with those in group C (p=0.02); the rectal sensitivity threshold was lower in group B than in group D patients (p=0.02). No voluntary postcontraction sphincter relaxation was observed in either group A or group B patients (p=0.891 and p=0.939, respectively).ConclusionsThe decrease in the difference in resting anal pressure before and after maximum squeeze maneuvers suggests post-contraction sphincter spasticity, indicating impaired pelvic floor coordination in multiple sclerosis patients. A knowledge of manometric alterations in such patients may be clinically relevant in the selection of patients for appropriate treatments and for planning targeted rehabilitation therapy.

scholarly journals Effect of cissus quadrangularis linn and zingiber officinale rosc in osteoarthritis patients

2017 ◽  
Vol 5 (8) ◽  
pp. 3540
Author(s):  
J. Viswanath ◽  
Chakrapani Cheekavolu ◽  
S. Sankaraiah ◽  
Renu Dixit
Keyword(s):  
Combination Therapy ◽  
Combination Treatment ◽  
Joint Pain ◽  
Zingiber Officinale ◽  
Cissus Quadrangularis ◽  
Before And After ◽  
Group A ◽  
The Difference ◽  
Group B

Background: To evaluate the efficacy of Cissus quadrangularis Linn. or Zingiber officinalis Rosc. or in combination treatment of osteoarthritis which reduces joint pain, joint swelling and tenderness without risk of side effects.Methods: Total 60 patients were selected and divided into 3 groups (each group consist of 20 patients); data were collected before and after treatment of following groups: Group A-Cissus quadrangularis linn-5gm; Group B- Zingiber officinale rosc-5gm; Group C-Treatment of Cissus quadrangularis linn combined with Zingiber officinale rosc-5 gm/dose twice a day with luke warm water.Results: 60 % cases of joint pain were relieved at the end of the treatment in group B & C, in group A 50%, reduction in joint pain extremely significant in all groups A, B, C (p<0.0001). ‘C’ 80%, ‘A’ 15% and ‘B’5% reduction in symptom of Joint swelling and which is very significant in group A, and group B (p<0.001) and extremely significant in group C (p<0.0001). Symptom of tenderness ‘C’ 90%, ‘A’ 85%, and ‘B’ 10% cases were relived from the complaint. The difference in tenderness is statistically extremely significant when compared between groups (p<0.0001).Conclusions: Present study reveals that, significant reduction of joint pain, joint swelling and tenderness after treatment of Cissus quadrangularis Linn. or Zingiber officinalis Rosc. and extremely significant reduction of joint swelling and tenderness in combination therapy.

scholarly journals The Impact of Malocclusions and Orthodontic Treatments on a Patient's Quality of Life

2020 ◽  
Vol 7 ◽  
Author(s):  
Farid Bourzgui ◽  
Samir Diouny ◽  
Dounia Kamal ◽  
Hakima Aghoutan ◽  
Zineb Serhier ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Orthodontic Treatment ◽  
Psychosocial Impact ◽  
Index Score ◽  
Par Index ◽  
Before And After ◽  
Group A ◽  
Group B ◽  
The Impact

Aim: This study aimed to compare the variations in patients’ perception of oral health-related quality of life (OHRQoL), using the Moroccan version of PIDAQ, before and after orthodontic treatment among patients with the same initial PAR Index score, age, and gender.Methods: In this study, 67 participants were divided into 2 groups. Group A (treated, control group) consisted of 30 patients who received orthodontic treatment; group B comprised of 37 patients who were either at the initiation stage of treatment or potential candidates. The matching of group A and group B was achieved by reaching a compromise between PAR index score, age and gender. The assessment of the psychosocial impact of malocclusion was carried out using the Moroccan version of PIDAQ. The Chi-square test was used to establish associations between qualitative variables. Levene and Mann Whitney's tests were employed to determine the associations between quantitative variables.Results: The age of the patients ranges from 7 to 58 years, with a mean age of 23 years +/_10. 22. While 41 subjects (61.2%) consulted for aesthetic reasons, 26 subjects (38.8%) consulted for a functional reason. The distribution of scores of the two groups before and after orthodontic intervention showed no significant difference between the mean scores of the four PIDAQ domains.Conclusion: The results of our study showed a significant improvement in the psychosocial impact of malocclusion when comparing the two case-control groups, with a reduction in the perceived needs of patients who completed orthodontic treatment.

scholarly journals Slaughter yield and fatty acid profiles of fillets of pike (Esox lucius L.) caught before and after spawning

2015 ◽  
Vol 23 (4) ◽  
pp. 231-235 ◽  
Author(s):  
Zdzisław Zakęś ◽  
Renata Pietrzak-Fiećko ◽  
Mirosław Szczepkowski ◽  
Monika Modzelewska-Kapituła ◽  
Barbara Jankowska
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Fish Meat ◽  
Before And After ◽  
Group A ◽  
Group B ◽  
The Impact

Abstract The aim of the study was to determine the impact pike fishing season (before spawning in fall (group A) and after spawning in spring (group B)) had on the slaughter yield and fillet fatty acid profile. The slaughter yield of fillets with skin and skinned fillets from the group B fish was significantly lower (by approximately 7.5% of body weight). The fatty acid profile of the fish meat from the groups examined differed significantly. The fillets of pike caught before spawning were dominated by unsaturated fatty acids (UFA), while those from fish caught after spawning had mainly saturated fatty acids (SFA). The share of polyunsaturated fatty acids (PUFA) in the fillets of fish that had spawned was sixfold lower, and the n-3 PUFA differences were nearly ninefold. The content of eicosapentaenoic (EPA) and docosahexaenoic (DHA) fatty acids in fillets of fish that had spawned was ninefold lower than in those that had not yet done so. Consequently, the ratio of n-3 PUFA/n-6 PUFA in pike from group A was over three times higher than that in the fish that had spawned (2.61 vs 0.82). Fillets from pike that have spawned are a significantly poorer source of valuable fatty acids for consumers.

scholarly journals Airway Clearance in Bronchiectasis: A Randomized Control Trial of N-Acetylcysteine with 3% hypertonic saline

2019 ◽  
Vol 8 (3) ◽  
pp. 146-150 ◽  
Author(s):  
Muhammad Imran Shehzad ◽  
Muhammad Atiq Ul Mannan ◽  
Masood Alam ◽  
Abdul Rauf ◽  
Muhammad Imran Sharif
Keyword(s):  
Acute Exacerbation ◽  
Hypertonic Saline ◽  
Control Group ◽  
P Value ◽  
Airway Clearance ◽  
Before And After ◽  
Group A ◽  
The Mean ◽  
The Difference ◽  
Group B

Background: N-Acetylcysteine and 3% hypertonic saline are being used effectively for sputum clearance in chronic cases of bronchiectasis for quite some time. However, their use in acute condition of the disease seems to be underexplored. The objective of our study is to compare the role of nebulized N-acetylcysteine and 3% hypertonic saline in clearing the airway in patients with acute exacerbation of bronchiectasis. Material and Methods: A total of 136 confirmed cases of bronchiectasis were enrolled in this study. This randomized controlled trial was done in chest ward of Nishtar Hospital Multan from January 2015 to March 2017. Sampling was done by non-probability consecutive sampling and patients were divided into two groups A and B by lottery method. Verbal informed consent was taken from all participants. Group A participants received nebulization of N acetylcysteine mixed in normal saline for ten minutes, while group B participants were nebulized with 10ml of 3% hypertonic saline for ten minutes. Group B was active control group in the study. Data was collected on pre-designed Proforma, and analyzed by SPSS version 22. Numerical variables such as saturation, weight of sputum, age and blood pressure was analyzed by using t test. These were considered significant if the p value was equal or less than 0 .05. For qualitative variables chi square test was applied. Results: The mean O2 saturation of Group A, before and after treatment, was 92.11±3.07% and 94.47±2.18%, respectively. The difference was statistically significant (p value =0.001). The sputum weight of Group A, before and after treatment, was 2.63±2.39 g and 7.41±1.38 g, respectively. The difference was statistically significant (p value =0.001). The frequency of rhonchi of Group A, before and after treatment, was 52% and 76%, respectively. The difference was statistically significant (p value =0.003). While, for Group B, the mean O2 saturation, before and after treatment, was 92.36±3.13% and 93.49±2.27%, respectively. The difference was statistically significant (p value =0.012). The sputum weight, before and after treatment, was 3.11±2.01 g and 5.56±1.02 g, respectively. The frequency of rhonchi, before and after treatment, was 45% and 74% respectively. Again, the difference was statistically significant. Conclusion: Both nebulized N-acetylcysteine and 3% hypertonic saline cause airway clearance by enhancing sputum expectoration in patients with acute exacerbation of bronchiectasis equally. Both these agents also improve oxygen saturation in acute exacerbation of bronchiectasis significantly.

scholarly journals The impact of bismuth adding to rabeprazole, amoxicillin and clarithromycin on eradication rate of Helicobacter pylori

2020 ◽  
Vol 9 (8) ◽  
pp. 1280
Author(s):  
Mohammad Sadrkabir ◽  
Masoud Tasouji ◽  
Afshan Sharghi ◽  
Abbas Yazdanbod
Keyword(s):  
Helicobacter Pylori ◽  
Eradication Rate ◽  
High Prevalence ◽  
Group A ◽  
Stool Antigen ◽  
The Difference ◽  
H Pylori ◽  
Group B ◽  
The Impact ◽  
Optimal Regimen

Background: High prevalence of Helicobacter pylori infection and induction of resistance as a result of consumption of antibiotics necessitates an ongoing effort for evaluation of new regimen to overcome this phenomenon.  Intensive efforts are being made to identify such an optimal regimen, but there are many obstacles hindering the achievement of this goal. This study aimed to investigate the impact of adding bismuth to rabeprazole, amoxicillin and clarithromycin on rate of H. pylori eradication.Methods: In this randomized clinical trial, 60 patients with dyspepsia and positive gastric biopsy for H. pylori in endoscopy were recruited. The first group (A) received rabiprazole for 6 weeks, amoxicillin and clarithromycin for 2 weeks either with bismuth for 2 weeks and the second group (B) received rabiprazole for 6 weeks, amoxicillin and clarithromycin for 2 weeks either without bismuth. Four weeks after the treatment, the compliance and eradication were evaluated using stool antigen of helicobacter. The patients who could complete the therapeutic regimen were assigned for analysis.Results: H. pylori eradication rates were 70% and 56.6% in two groups A and B (with and without Bismuth), respectively and the difference was significant. There is a significant relationship between the studied groups and the results of fecal antigen of H. pylori.Conclusions: The bismuth had a significant effect on the success of eradication rate of H. pylori and its impact adding to the treatment regimen containing clarithromycin was effective on eradication success rate.

scholarly journals Comparative studies on mydriatic effect of tropicamide 0.8% and phenylephrin 5.0% in teenagers & geriatric people

2019 ◽  
Vol 1 (2) ◽  
pp. 65-73
Author(s):  
K. Diwakar ◽  
Y. Sailaja ◽  
V. Palanivel ◽  
Shaik Baba Fakruddin ◽  
T. Gangadhara ◽  
...  
Keyword(s):  
Pupil Size ◽  
Age Groups ◽  
Serious Adverse Events ◽  
Before And After ◽  
Group A ◽  
Study Population ◽  
The Difference ◽  
Group B ◽  
Pupillary Size ◽  
Two Age Groups

Prospective study on the comparison of mydiriatic effect of Tropicamide 0.8% and Phenylephrine 5% in teenagers and geriatric people was carried out in suthrama Eye Hospital madanapalle, India. The main objective of this study was to compare the mydriatic effect of a combination of drug in teenagers and geriatric people. It also evaluated the ADR’s produced and the efficacy of the drug in two age groups. In this study population majority of the subjects were female in group A and male in group B. Among the whole population under study in group A and B no one has reported with any case of congenital anomalies. A number of ADR’s are reported but no serious adverse events had occurred. The study was carried out in 100 eyes ie. 50 subjects whom are divided into 2 groups based on age. The comparison of mydriatic effect was done in each group after instilling one drop of a combination of 0.08% Tropicamide and 0.5% Phenynilephrine. The pupillary size where measured before and after administration of drug and the results were compared. The results showed that there is a large difference in the normal pupil size between teenagers and geriatric people. After dilation the difference in pupil size was statistically significant among the two groups. The study concludes that the pupillary dilation produced by administering 0.8% Tropicamide and 5% Phenylephrine produces higher mydriatic effect in teenagers than geriatric people.

scholarly journals Effect of Xinjiang UyghurVernonia anthelminticaWilld Injection Treatment with Silicosis Fibrosis

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Guitao Liu ◽  
Yingjia Liu ◽  
Lu Jin ◽  
Cuidong Li ◽  
Liping Nie ◽  
...  
Keyword(s):  
Amyloid Beta ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Tree Model ◽  
Curative Effect ◽  
Alpha Chain ◽  
Before And After ◽  
Group A ◽  
The Difference ◽  
Group B

Objective. To observe the curative effect of VAWI on Xinjiang Uygur patients with silicosis fibrosis.Methods. After we diagnosed the 40 patients with the first phase of silicosis, we randomly divided them into two groups: the basic treatment group (group A,n=20) and the VAWI group (group B,n=20). At the same time, we selected the age-matched healthy patients (n=20). We applied the combined protein chip with SELDI-TOF-MS to carry out the serum analysis. The data were analyzed throughout data preprocessing, difference in PEAK screening, hierarchical cluster analysis, and Principal Component Analysis (PCA). We built decision tree model and predict the difference between the PEAK corresponding proteins.Results. The proteins peaks corresponding to name, predicted protein, and gene name were as follows: M2001_69, amyloid beta a4 protein, APP, and M2017_02, amyloid beta a4 protein, APP. The different expression of proteins in patients with silicosis was found before and after with VAWI treatment. The predicted proteins were as follows: M1982_50, amyloid beta a4 protein, APP; M3164_50, fibrinogen alpha chain frag, FGA; M3379_28, fibrinogen alpha chain frag, FGA; and so on.Conclusion. VAWI presented curative effect on patients with silicosis fibrosis via the alternation of proteins expression in serum.

scholarly journals Comparing the Efficacy of Plaque Removal between Salvadora persica (Miswak) and Manual Toothbrush in 12 to 15 Years School Children

2011 ◽  
Vol 2 (1) ◽  
pp. 29-33
Author(s):  
Aruna M Devi ◽  
Pooja Hampannavar ◽  
G Radha ◽  
Sushi Kadanakuppe ◽  
SR Nagashree ◽  
...  
Keyword(s):  
School Children ◽  
Plaque Index ◽  
Base Line ◽  
Salvadora Persica ◽  
Plaque Removal ◽  
Before And After ◽  
Group A ◽  
Manual Toothbrush ◽  
The Difference ◽  
Group B

ABSTRACT Aim To compare the efficacy of plaque removal between chewing stick (Miswak—Salvadora persica) and manual toothbrush in 12 to 15 years old school children. Methods A randomized, examiner-blind, parallel design study was conducted over a 2-month period, among 12 to 15 years old students of Sri Sajjan Rao Vidya Samasthe, Bengaluru. A sample size of 60 subjects was randomly allocated into two groups, 30 subjects in group A (manual toothbrush) and 30 subjects in group B (chewing stick). The plaque index (Turesky et al, modified Quigley Hein plaque index) was used for base line, pre- and postintervention assessment. Then the data was collected and subjected to statistical analysis and the test used was Student-t test. Results The results were given separately for between and within group comparison. The difference in mean PI score between toothbrush users and tooth stick users is found to be statistically significant (p < 0.01). Higher mean PI score was found in tooth stick users compared to toothbrush users and the mean difference was statistically significant. The difference in mean PI score in both the groups, before and after intervention was statistically significant (p < 0.001). Conclusion Manual toothbrush and Miswak tooth sticks (Salvadora persica) both are effective in removal of plaque, but manual toothbrush was more effective than Miswak tooth stick, which was statistically significant.

scholarly journals The impact of age on propofol requirement for inducing loss of consciousness in elderly surgical patients

2021 ◽  
Author(s):  
Hua Yang ◽  
Hui-Min Deng ◽  
Jun-Wei Ji ◽  
Xin Lv ◽  
Jin-Chao Song
Keyword(s):  
Verbal Response ◽  
Surgical Patients ◽  
Anesthesia Induction ◽  
Loss Of Consciousness ◽  
Independent Factor ◽  
Group A ◽  
D 20 ◽  
American Society ◽  
Group B ◽  
The Impact

Aims: It is generally accepted that geriatric patients are more sensitive to propofol than adults; thus, a dose-adjusted propofol is recommended for these patients during the induction of anesthesia. However, for patients aged 75 years and over, established guidelines do not provide dose references for the anesthesiologists. To this end, we observed 80 surgical patients (female 39, male 41, American Society of Anesthesiologists physical status score Ⅰ ~ Ⅱ) to access the appropriate dose of propofol for inducing loss of consciousness (LOC). Methods: Patients were subdivided into group A (20 patients, 45~64 yr), group B (20 patients, 65~74 yr), group C (20 patients, 75~84 yr), and group D (20 patients, ≥ 85 yr). All patients received propofol (at a rate of 0.3 mg/kg/min) alone for inducing LOC, which was defined by loss of both eyelash reflex and verbal response. Results: Compared with group A, the propofol requirement for LOC in Group B, C and D decreased by 14.8%, 25.2% and 38.5%, respectively. Bivariate linear correlation analysis showed that propofol requirement was negatively correlated with age. After adjusting for potential confounders, age was still an independent factor affecting propofol requirement. Conclusion: The propofol requirement for inducing LOC decreased significantly in elderly patients. We demonstrated that age was an independent factor impacting propofol requirement for LOC during the induction of general anesthesia, implying that the propofol dose for anesthesia induction should be further reduced in elderly surgical patients, especially those aged 75 years and over.

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