scholarly journals Hygroscopic expansion of bulk fill composites: A three-month report

2018 ◽  
Vol 21 (2) ◽  
pp. 172
Author(s):  
Elham Hasani ◽  
Narges Panahandeh ◽  
Sayna Shamszadeh ◽  
Ahmad Najafi Abrandabadi ◽  
Seyedeh Mahsa Sheikh-Al-Eslamian
Keyword(s):  
Water Immersion ◽  
Polymer Networks ◽  
Deionized Water ◽  
Repeated Measure ◽  
Chemical Absorption ◽  
Repeated Measure Anova ◽  
Measure Anova ◽  
Significant Difference ◽  
The Mean ◽  
Different Thickness

<p>Polymer networks are considered to be largely affected by water and chemical absorption from environment. <strong>Objective: </strong>The aim of this study was to evaluate the hygroscopic expansion of bulk-fill composite. <strong>Material and Methods:</strong> Fifteen disks (5 in each group) with different thickness(4mm/2mm) of Tetric N-Ceram Bulk Fill composite(TB) and Tetric N-Ceram composite(TN) were made according to the manufacturer’s instruction and stored in deionized water. The length of each specimen was recorded using a digital micrometer at baseline and at the end of 24 h, 1, 2, 4, 12 weeks intervals. Repeated measure ANOVA and Tukey HSD were used to determine the effect of variables. At 12 weeks, the mean hygroscopic expansion after water immersion ranged between 0. 33±0.09mm for TN to 0.41±0.07mm for TB with 2mm thickness. Repeated measure ANOVA revealed a significant increase in hygroscopic expansion over time (P&lt;0.05). <strong>Results: </strong>The results indicated that at 24hours and 2weeks there was a significant difference among TN and TBwith 4mm thickness (p=0.007 and p=0.023, respectively). The other differences were not significant.<strong> </strong>Hygroscopic expansion affected by the type of composite and the passing of time. <strong>Conclusion: </strong>The results showed that the time taken to reach stabilization in hygroscopic expansion was shorter for TN in comparison with TB. For 2mm thickness equilibrium was attained earlier.</p><p><strong> </strong></p><p><strong>Keywords</strong></p><p>Water; Expansion; Composites; Polymerization; Bulk-fill.</p>

Abstract 142: Evaluation of Clinical Efficacy and Safety of a Newly Developed Automated Cardiopulmonary Resuscitation Device; A Porcine Cardiac Arrest Model

Circulation ◽  
2018 ◽  
Vol 138 (Suppl_2) ◽  
Author(s):  
Ki Hong Kim ◽  
Sang Do Shin ◽  
Tae Han Kim ◽  
Ki Jeong Hong ◽  
Seong Wook Choi ◽  
...  
Keyword(s):  
Life Support ◽  
Repeated Measure ◽  
P Value ◽  
Hemodynamic Parameters ◽  
Open Thoracotomy ◽  
Repeated Measure Anova ◽  
Measure Anova ◽  
Significant Difference ◽  
Pathologic Findings ◽  
Cpr Quality

Background: Various automated compression device (ACD) have been adopted by emergency medical services (EMS) worldwide to ensure cardiopulmonary resuscitation (CPR) quality. We developed a new ACD with a manual adjustment function according to compression depth and rate. This study aimed to compare the CPR quality and chest injury caused between the new ACD and a conventional device (LUCAS, Physio-Control, Sweden). Methods: A randomized experimental trial using each eight pigs for ACD and Lucas group were performed to compare the CPR quality, outcomes, and safety. After 1-minute of untreated electrical-induced ventricular fibrillation, followed by 8-minutes of basic life support, and 20-minutes of advanced cardiac life support including epinephrine infusion were provided under mechanical ventilation. Hemodynamic parameters were obtained and observed end-tidal CO2 (ETCO2) were continuously measured from endotracheal tube as study outcome. Mixed model analysis and repeated measure ANOVA were used to compare the difference of hemodynamic parameters and observed ETCO2. We examined the all pigs for gross pathologic findings (number of lung contusion, laceration, bone fracture, and hematoma in the thoracic cavity) after CPR procedures through open thoracotomy. Results: There was no significant difference for hemodynamic parameters such as mean arterial pressure, 29.4 mmHg in ACD group versus 35.3 mmHg in Lucas group (p-value= 0.39). Observed ETCO2 between ACD and Lucas group were 18.0 and 26.8 mmHg (p-value=0.24). Repeated measure ANOVA for observed ETCO2 did not show significant difference (17.6 versus 26.0, p-value= 0.29). The gross pathologic findings through open thoracotomy examination after CPR showed insignificant difference of injury number in chest cavity and wall (7.63 versus 9.38, p-value= 0.49). Conclusions: Hemodynamic parameters and observed ETCO2 were slightly better in Lucas group than new ACD group. However, the statistical significances were not found in the porcine experimental mechanical models.

scholarly journals Effect of Crossfit Training on Jump and Strength

2018 ◽  
Vol 7 (1) ◽  
pp. 121 ◽  
Author(s):  
Oğuzhan Yüksel ◽  
Bolat Gündüz ◽  
Mert Kayhan
Keyword(s):  
Repeated Measure ◽  
Control Group ◽  
Control Groups ◽  
Squat Jump ◽  
Repeated Measure Anova ◽  
Measure Anova ◽  
Wilks Lambda ◽  
The Mean ◽  
Crossfit Training ◽  
Experimental Group

The purpose of this study is to investigate the effect of regular CrossFit training on some force and jump parameters. 32 healthy wrestling men participated in the study, 16 experimental and 16 control groups. For the experimental group, CrossFit training, known as Cindy, was practiced three times a week for 8 weeks. The training consisted of 5 bars, 10 push-ups and 15 squats for 20 minutes. The control group continued the classical wrestling practice. Myotest accelerometric system was used for measurements of participants’ values. For the analysis of the data, repeated measure ANOVA was used. According to the results, as a result of CrossFit training, athletes' squat jump heights increased (Wilks' Lambda = .541, F (1,30) = 25, p = .00). The mean post-training leap values (33.778 ± 5.48) were higher than the pre-training leap values (32.169 ± 4.95) (p <0.05). It can be concluded that Cindy CrossFit studies improve jumping and strength ability.

scholarly journals ORGANIZATIONAL ECOLOGY OF ACCOMMODATION POPULATIONS THAT TAKE PLACE IN TURKEY

2019 ◽  
Vol 6 (4) ◽  
pp. 790-805
Author(s):  
Eda Rukiye DÖNBAK
Keyword(s):  
Repeated Measure ◽  
Ecological Approach ◽  
Upward Trend ◽  
Repeated Measure Anova ◽  
Business Plans ◽  
Private Organizations ◽  
Measure Anova ◽  
Private Organization ◽  
Significant Difference ◽  
Data Source

The present study aims at taking an ecological approach to explain general and private types of accommodation organizations’ ecological movements in Turkey. Distribution Statistics for Certified Accommodation Facilities by Their Type issued by the Ministry of Culture and Tourism of Turkey for the period between 1990 and 2015, was used as data source. General and private organization types were classified by using this data and previous studies in literature. In this study repeated measure ANOVA test is used in order to investigate the significant differences between general and private accommodation groups’ upward trends between years of 1990 – 2015. When the data is tested independently based on years it is found that there is significant difference only in the group of private organizations. There was an upward trend in all groups compared to the years whereas this difference was significant only in the group of private organizations. The results can aid organizations strategically implementing their business plans.

Comparative Analysis of Barefoot and Shod Running

2011 ◽  
Vol 20 (3-4) ◽  
pp. 113-130 ◽  
Author(s):  
Colin Utz-Meagher ◽  
John Nulty ◽  
Lisa Holt
Keyword(s):  
Comparative Analysis ◽  
Force Plate ◽  
Video Camera ◽  
Repeated Measure ◽  
Initial Contact ◽  
Baseline Trial ◽  
Repeated Measure Anova ◽  
Measure Anova ◽  
Before And After ◽  
Post Test

Comparative Analysis of Barefoot and Shod Running This study investigated the biomechanical difference between running barefoot and shod before and after a barefoot training program (BTP). Foot angles at contact (FA), contact time (CT), stride length (SL), initial contact force (ICF), and total peak force (TPF) in shod and unshod runners was analyzed. Fourteen collegiate runners attended 12 total sessions over a two week period. Subjects performed a baseline trial, running eight (10-20 meter) repetitions, four barefoot and four shod, at three different stations; running over a force plate, running in front of a SONY DCR-HC52 video camera (30fps) and running in front of a Casio Exilim Pro EX-F1 camera (300fps). A Post-Test (PT) was conducted at the end of the BTP. A repeated measure ANOVA showed significance (p<.05) in the Test factor, BTP; lowering participants FA mean from 18.8deg+/-.9deg to 5.6deg+/-15.1deg, CT mean from .221m+/-.02m to .2m+/-.03m, and TPF mean from 1427.4N+/-312.9N to 1348.2N+/-269.4N. A repeated measure ANOVA showed significance (p<.05) in the Condition factor (shod vs. unshod); lowering participants FA mean from 23.1deg+/-12.6deg to 1.3deg+/-14.4deg, SL mean from .9m+/-.1m to .8m+/-.1m, and ICF mean from 1465.3N+/- 369.6N to 1324.7N+/-379.4N. Running barefoot and following a BTP alters running biomechanics in ways that may decrease running related injuries.

Comparing the Effect of Hand and Foot Reflexology Massages on the Severity of Nausea, Vomiting and Ileus in patients after Abdominal Surgery

2021 ◽  
Vol 15 (6) ◽  
pp. 1589-1593
Author(s):  
Elham Shahraki Moghadam ◽  
Zahrasadat Manzari ◽  
Hossein Rashki Ghalenow ◽  
Hajar Noori Sanchooli
Keyword(s):  
Abdominal Surgery ◽  
Repeated Measures ◽  
Abdominal Distension ◽  
Repeated Measure ◽  
Chi Square ◽  
Exact Test ◽  
Positive Effects ◽  
Significant Difference ◽  
The Mean ◽  
Hands And Feet

Background: Common clinical problems after surgery include nausea, vomiting and ileus that many patients complain of after their surgery. These complications can delay the patient's discharge from hospital. Nowadays, to reduce drug side effects, the use of complementary medicine, including reflexology, has received a great deal of attention. Aim: To compare the effect of hand and foot reflexology massages on the severity of nausea, vomiting and ileus in patients after abdominal surgery. Methods: This is a clinical trial study that was conducted between 2013 and 2015 in the emergency surgical departments of Imam Reza (AS) and Ghaem (AS) hospitals in Mashhad. The samples of this study included 90 women with cholecystitis and appendicitis who met the inclusion criteria. In this study, patients were randomly divided into 3 groups of hand reflexology massage, foot reflexology massage and control. To check the digestive status, gastrointestinal sounds were checked every hour using a clinical stethoscope. Also, information on gas and feces elimination was collected and recorded every hour. The intervention was performed 1 and 12 hours after the surgery. In both groups of hands and foot reflexology massages, after general massage of the hands and feet, the areas related to the abdominal distension and removal of the ileus were pressed. It should be noted that, the duration of massage for each person was 10 minutes (20 minutes in total). Data were analyzed by SPSS software version 16 using Chi-square, Fisher’s exact test, two-way ANOVA, Kruskal-Wallis test and repeated measures ANOVA. Results: There was no statistically significant difference in the mean score of severity of nausea before the intervention between the three groups (p = 0.90), but after the intervention a significant difference was observed in the mean score of severity of nausea between the three groups (p=0.002). Also, the result of ANOVA test with repeated measure showed a statistically significant difference in the mean score of nausea by group and stage (p<0.001). There was also no statistically significant difference in the frequency of vomiting severity between the three groups after the intervention. However, at 4 and 24 hours after the intervention, a statistically significant difference was observed between the three groups in that regard. Conclusion: The results showed that both types of hand and foot reflexology massage has positive effects on nausea and return of gastrointestinal movements, so nurses can use reflexology as a non-pharmacological and complementary method to reduce the severity of nausea and return gastrointestinal movements in postoperative patients. Since the reflexology had little or no effect on the severity of vomiting and the acceleration of gastrointestinal movements in patients, further studies in this area are recommended. Keywords: Reflexology, Pain, Nausea and vomiting, Ileus, Surgery

scholarly journals Household Food Expenditure Share During Pregnancy: Evidence From Rural Sri Lanka

2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 753-753
Author(s):  
Sajaan Gunarathne ◽  
Nuwan Wickramasinghe ◽  
Thilini Agampodi ◽  
Indika Prasanna ◽  
Suneth Agampodi
Keyword(s):  
Sri Lanka ◽  
Pregnant Women ◽  
Household Income ◽  
Repeated Measure ◽  
Household Food ◽  
Education Expansion ◽  
Significant Difference ◽  
Expenditure Share ◽  
Food Expenditure ◽  
The Mean

Abstract Objectives Maternal nutritional requirements are expected to vary during pregnancy due to changing demands. Household food expenditure (HFE) reflects the affordability for these nutritional demands. We explored the relationship between household income and the HFE during pregnancy. Methods The study was a part of Rajarata Pregnancy Cohort (RaPCo), a prospective cohort conducted in Anuradhapura district, Sri Lanka in 2019. Participants were recruited in the 1st trimester and followed up monthly for household expenditure data using a self-administered questionnaire. The associations between household income and HFE during all three trimesters were assessed with one-way ANOVA, repeated measure ANOVA, and correlation analysis. Results The sample sizes for each trimester were 1288,1049, and 168 pregnant women respectively. The mean (SD) age was 28.3 (5.6) years. The mean (SD) monthly household income and the expenditure were USD 261.29 (203.58) and USD 168.41 (108.68) respectively. The mean (SD) monthly HFE for each trimester were USD 55.18 (32.90), USD 55.07 (30.93), and USD 55.46 (31.67). There was a weak positive correlation (r = 0.022, p = 0.429) between household income and HFE in the 1st trimester and there were significant positive correlations in the 2nd (r = 0.275, p = 0.001) and 3rd trimesters (r = 0.403, p = 0.001). The household food expenditure share (HFES) out of total expenditure across three trimesters (35.0%, 33.3%, and 36.3%) were significantly different [F(2,134) = 3.82, p = 0.024]. The HFES in the income quintiles showed statistically significant difference only in the 2nd trimester [F(4,871) = 9.97, p = 0.001] and the HFHS from the lowest to the highest quintile were 36.1%, 31.7%, 32.1%, 30.0%, and 27.7% respectively. Conclusions On average, Sri Lankan rural pregnant women spend USD 55.24 as HFE and the HFES is 34.9%. The reported HFES value is consistent with the national household estimates in Sri Lanka. Even though the income is positively correlated with food expenditure, the HFES across income quintiles remain high during pregnancy, which reflects the perceived importance of addressing food requirements irrespective of the income. Funding Sources Accelerating Higher Education Expansion and Development (AHEAD), World Bank.

scholarly journals Dimensional stability of two solder index materials

2016 ◽  
Vol 10 (02) ◽  
pp. 259-263
Author(s):  
Amir Ali Reza Khaledi ◽  
Soheil Pardis ◽  
Negar Pourhatami ◽  
Zahra Hashemi Ardakani
Keyword(s):  
Dimensional Accuracy ◽  
Acrylic Resin ◽  
Time Lapse ◽  
Reference Points ◽  
Repeated Measure ◽  
Control Group ◽  
Measure Anova ◽  
Measurement Control ◽  
Digital Microscope ◽  
The Mean

ABSTRACT Objectives: This study aimed to compare the dimensional accuracy of two indexing materials, an acrylic resin (GC pattern resin) and a castable composite (Bredent). The effect of time lapse until investment was also investigated. Materials and Methods: Two standardized brass dies 15 mm apart were prepared and then 20 identical coping-bar assemblies were designed and fabricated by a rapid prototyping device. Each bar was sectioned at the center, and indices were fabricated from an acrylic resin or castable composite (n = 10 per group). The distances between the reference points were measured with a digital microscope at ×80 magnifications at 15 min, 60 min, and 24 h after indexing. Data were statically analyzed using repeated-measure ANOVA (α = 0.05). Results: The distance between the reference points without the coping being joined was considered as the baseline measurement (control group). The mean distance was 19.30 ± 0.04 mm between the reference points where the copings were not joined. When indexed with acrylic resin, the mean ± standard deviation (SD) dimensions were 19.27 ± 0.087 mm (15 min), 19.25 ± 0.09 mm (60 min), and 18.98 ± 0.1 mm (24 h). The mean ± SD dimensions for composite were 19.29 ± 0.087 mm (15 min), 19.28 ± 0.08 mm (60 min), and 19.26 ± 0.08 mm (24 h). All tested groups showed significant differences compared to the control group except when it was indexed with composite and where the distances were measured after 15 and 60 min (P > 0.05). Conclusions: The most accurate indexed-assemblies belonged to castable composite at 15 and 60 min.

scholarly journals Effectiveness of Aural-Oral Approach Based on Volubility of a Deaf Child with Late-Mapping Bilateral Cochlear Implants

2021 ◽  
Vol 11 (3) ◽  
pp. 373-383
Author(s):  
Paris Binos ◽  
Elena Theodorou ◽  
Thekla Elriz ◽  
Kostas Konstantopoulos
Keyword(s):  
Cochlear Implants ◽  
Speech Therapy ◽  
Deaf Child ◽  
Repeated Measure ◽  
Language Therapy ◽  
Bilateral Cochlear Implants ◽  
Starting Point ◽  
Significant Difference ◽  
The Mean ◽  
Two Phases

Background: The purpose of this study was to investigate the effectiveness of aural-oral habilitation (AO) over the traditional speech-language therapy, based on the number of vocalization-volubility of a deaf child with late-mapping bilateral cochlear implants using sequential measurements. Methods: The spontaneous productions during child interactions were analyzed. The child (CY, 7;0 years old) with a mean unaided pure-tone average (PTA) hearing loss >80 dB HL was assessed by using an assessment battery. Study design consisted of two phases: (a) baseline (end of speech therapy) and (b) end of AO treatment. Protophones were analyzed via acoustical analysis using PRAAT software. Results: One-way repeated-measure ANOVAs were conducted within and between phases. The analyses revealed significant differences between the ‘phase’ and the vocalization outcome (F = 9.4, df = 1, p = 0.035). Post hoc analyses revealed the significant difference between the mean number of disyllable vocalizations of AO approach (p = 0.05). The mean number of vocalizations was calculated for each protophone type, but no other significant difference was measured. Conclusions: AO approach proved effective as measured through volubility. The outcome of this study is indicative and is a starting point for broader research.

scholarly journals Relationship between the Occlusal Plane corresponding to the Lateral Borders of the Tongue and Ala-tragus Line in Edentulous Patients

2012 ◽  
Vol 13 (5) ◽  
pp. 590-594 ◽  
Author(s):  
Carole Abi-Ghosn ◽  
Carla Zogheib ◽  
Joseph E Makzoumé
Keyword(s):  
Acrylic Resin ◽  
Repeated Measure ◽  
Occlusal Plane ◽  
Significant Difference ◽  
Measure Analysis ◽  
The Mean ◽  
Edentulous Patients ◽  
Student’S T ◽  
Inferior Border ◽  
The Relationship

ABSTRACT Aim Definitions of the ala-tragus line (ATL) cause confusion, because the exact points of reference for this line do not agree. This study determined the relationship between the prosthetic occlusal plane (OP) corresponding to the lateral borders of the tongue and ATL which was established by using the inferior border of the ala of the nose and (1) the superior border of the tragus (ATL 1), (2) the tip (ATL 2) and (3) the inferior border of the tragus (ATL 3). Materials and methods Neutral zone moldings using phonation and autopolymerizing acrylic resin were recorded and leveled with the lateral borders of the tongue. Lateral cephalometric radiographs were taken of each subject by a standard method. Tracings were obtained on acetate paper to show the prosthetic OP and the three ATLs. The relationship between the prosthetic OP and each of ATL was measured for each subject. Mean and standard deviation values were then calculated for the relationship. Statistical analysis was performed using repeated measure analysis of variance followed by Bonferroni pairwise comparisons and Student's t-test (α = 0.05). Results Significant difference was found between the three mean angles (p = 0.001). There was no significant difference between the mean angle (5.00° ± 4.38) formed by OP and ATL 2, and the mean angle (4.90° ± 3.50) formed by OP and ATL 3 (p = 1.00) which revealed the smallest. Conclusion The findings of this study indicated that ATLs, extending from the inferior border of the ala of the nose to (1) the tip of the tragus of the ear, and (2) the inferior border of the tragus presented the closest relationship to the prosthetic OP corresponding to the lateral borders of the tongue. Clinical significance When the ATL is used for orientation of the OP in denture construction, it would seem preferable to define it as running from the inferior border of the ala of the nose to the tip or to the inferior border of the tragus of the ear. How to cite this article Abi-Ghosn C, Zogheib C, Makzoumé JE. Relationship between the Occlusal Plane corresponding to the Lateral Borders of the Tongue and Ala-tragus Line in Edentulous Patients. J Contemp Dent Pract 2012;13(5):590-594.

Sign in / Sign up

Export Citation Format

Share Document