Effect of Rotary Instrument Mineral Oil Lubricant on Osseointegration: A Randomized, Blinded Study in Rabbits

2019 ◽  
Vol 45 (1) ◽  
pp. 12-17
Author(s):  
Arturo Sánchez-Pérez ◽  
Ana Belén Cano-Tovar ◽  
José Javier Martín-de-Llano ◽  
Francisco Javier Sarobe-Oyarzun ◽  
Scott Davis ◽  
...  
Keyword(s):  
New Zealand ◽  
Dental Implants ◽  
Mineral Oil ◽  
Significant Difference ◽  
Blinded Study ◽  
Early Failures ◽  
And Control ◽  
The Impact ◽  
Rotary Instrument ◽  
New Zealand Rabbits

The mechanisms of early failures in dental implant osseointegration are unclear. A possible cause of low levels of bone formation is lubricant contamination on implants during insertion. To explore the impact of lubricant contamination on dental implants, we used 5 New Zealand rabbits and inserted 2 implants per tibia in each animal for a total of 4 implants per animal (20 implants in total). In general, bicorticalization was achieved. The first implant was placed as suggested by the manufacturer with no lubricant used (control). The second implant was placed using a freshly lubricated contra-angle handpiece, which was used only for the test implants. Implant allocation was randomized, and the examining histologist was blinded to the results. All implants were placed by the same surgeon. The animals were maintained in accordance with animal experimentation guidelines. None of the implants failed to osseointegrate. Moreover, no significant difference was observed between the test and control groups. Based on the results of this study, the use of rotary instrument mineral oil lubricant did not jeopardize the osseointegration of dental implants in New Zealand rabbits.

457 The Impact of PAP Therapy on Hematocrit in OSA and Polycythemia: A Pilot Study

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A180-A181
Author(s):  
Mustafa Jafri ◽  
Gabrielle Rosa-Acosta ◽  
Jose Flores Martinez ◽  
Elizabeth Schofield ◽  
Cy Wilkins ◽  
...  
Keyword(s):  
Intervention Group ◽  
Smoking History ◽  
Event Analysis ◽  
Control Groups ◽  
Testosterone Therapy ◽  
Obstructive Sleep ◽  
Significant Difference ◽  
Testosterone Administration ◽  
And Control ◽  
The Impact

Abstract Introduction Untreated polycythemia leads to complications including thrombosis. Obstructive sleep apnea (OSA) is commonly associated with secondary erythrocytosis, which testosterone therapy can perpetuate. Effects of positive airway pressure (PAP) on elevated hematocrit (HCT) is unknown. We hypothesize PAP adherence can reduce HCT in men with OSA and polycythemia. Methods Retrospective chart review of male outpatients with newly diagnosed OSA and HCT≥45% at or 3 months before polysomnography (PSG) was conducted. Intervention group consisted of patients initiating PAP for OSA. HCT within 6 months of PAP initiation and PSG were recorded for intervention and control groups, respectively. Primary endpoint was time-to-HCT reduction of HCT<50% plus 3% decrease. Cox proportional-hazards analysis was used to assess time-to-HCT response. Demographics, smoking history, testosterone administration, STOP-Bang score, AHI, and PAP compliance data were obtained. Patients excluded if PAP not indicated, or if PSG, PAP compliance, or repeat HCT were unavailable. Results 41 men with OSA had HCT≥45%, of which 16 had HCT≥50%. Median age was 60 years and median BMI was 32 kg/m2. 28 started PAP. 21 met definition for PAP compliance within 6 months. Median AHI of intervention and control groups were 23 and 19 events/hr, respectively. Mean baseline HCT of both groups were 49 and 50, respectively. No significant difference in age, BMI, smoking history, testosterone therapy, and baseline HCT between both groups noted. 39% of intervention group exhibited HCT response at 1 or more longitudinal assessments, versus 38% of control. Intervention group had higher mean STOP-Bang than control (mean 5.9 vs. 4.6, p=0.01) and trended towards higher mean baseline AHI (27.4 vs. 19.0, p= 0.06). Time-to-event analysis controlling for STOP-Bang and AHI demonstrated PAP was not associated with time-to-HCT response (HR = 1.3, 95% CI = 0.4–4.4). In moderate-severe OSA patients, 40% of intervention group had HCT response compared to 14% of control, though difference was not significant (HR = 2.5, 95% CI = 0.3–20.0). Conclusion Moderate-severe OSA patients trended towards reduction in HCT with PAP, although not statistically significant. Testosterone administration did not affect HCT response to PAP in this cohort. Larger studies are required to determine HCT response to PAP in these patients. Support (if any):

scholarly journals How is Satiety Affected When Consuming Food While Working on A Computer?

Nutrients ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1545 ◽  
Author(s):  
Lily Ding ◽  
Nazimah Hamid ◽  
Daniel Shepherd ◽  
Kevin Kantono
Keyword(s):  
Energy Intake ◽  
Eating Behavior ◽  
Normal Weight ◽  
Restrained Eating ◽  
Computer Work ◽  
Meal Intake ◽  
Significant Difference ◽  
Before And After ◽  
And Control ◽  
The Impact

More people working at offices are choosing to eat meals at their desks, making “desktop dining” an increasingly common phenomenon. Previous studies have reported that environmental distractors, such as television viewing, can influence meal intake and subsequent snack intake. However, the impact of stressful mental tasks on eating behavior has received relatively less attention, focusing only on subsequent meal intake or concurrent snack intake. This study sets out to determine whether eating while working influenced current meal energy intake. This research also examined the relationship between dietary restraint status and energy intake. A crossover experimental design was employed requiring participants (14 males and 29 females) to eat pizza quietly and at rest (control), and while working on a computer (work). Measurements included BMI, energy intake, state anxiety, restrained eating behavior, stress levels (pre- and post-eating), and appetite (before and after both work and control sessions). The findings showed that consuming food while working on a computer significantly increased stress but had no influence on energy intake compared to the control condition. However, post-eating hunger levels were significantly higher in the work condition compared to the control condition. As expected, satiety levels decreased significantly from pre- to post-eating for both work and control conditions. In addition, no significant relationship was observed between restrained eating behavior and energy intake in both work and control conditions. These results suggest that eating while working affected satiety of normal weight participants, as indicated by the significant difference in post-meal satiety levels between work and control conditions.

scholarly journals What is the impact of methotrexate on liver in patients with juvenile idiopathic arthritis? Results of liver SWE performed in a single centre

2021 ◽  
Author(s):  
Vildan Güngörer ◽  
Mehmet Öztürk ◽  
Mustafa Yasir Özlü ◽  
Şükrü Arslan
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Shear Wave Elastography ◽  
Term Therapy ◽  
Control Group ◽  
Significant Difference ◽  
Group 2 ◽  
Long Term Therapy ◽  
And Control ◽  
The Impact

ABSTRACT Objectives Long-term therapy with low-dose methotrexate (MTX) is widely used in treatment of rheumatic diseases, in children. The purpose of this study was to evaluate liver elasticity in patients with juvenile idiopathic arthritis (JIA) who received MTX and compare the results with control group. Methods Liver elasticity was evaluated with shear wave elastography (SWE) technique in 25 patients aged 3–17 years who were followed up with JIA and received MTX and compared with 25 healthy controls of the same age and weight. Factors that had an effect on liver elasticity were examined. Results The mean SWE value of patients was 2.64 ± 2.13 m/s and 24.10 ± 18.50 kPa, whereas 1.83 ± 0.16 m/s and 10.09 ± 1.83 kPa in control group. There was a significant difference in liver elasticity in the patient and control groups. When the patients were evaluated as Group 1 (< 1000 mg) and Group 2 (≥ 1000 mg) according to the cumulative MTX dose, no significant difference was obtained. There was positive correlation between liver elasticity and weekly MTX dose and age. Conclusions Our study revealed that liver elasticity significantly decreased in patients who received MTX when compared with the control group. The elastography technique will be understood better over time and used safely in many areas.

scholarly journals The Impact of Smartboard on Preparatory Year EFL Learners’ Motivation at a Saudi University

2017 ◽  
Vol 8 (3) ◽  
pp. 172
Author(s):  
Waqar Ahmad ◽  
Zuraina Ali ◽  
Muhammad Aslam Sipra ◽  
Imtiaz Hassan Taj
Keyword(s):  
Teaching And Learning ◽  
Control Group ◽  
Efl Learners ◽  
Saudi Students ◽  
Significant Difference ◽  
Literature Reviews ◽  
Preparatory Year ◽  
And Control ◽  
The Impact ◽  
Experimental Group

Smartboards, which are now widely used in the teaching and learning process in Saudi Arabia, have turned the traditional environments of the classrooms, especially the EFL classrooms to be more interesting and encouraging. Literature reviews suggest that Saudi students usually lack motivation for studying English as a foreign language. This study tends to investigate the impact of Smartboards on preparatory year EFL learners motivation at a Saudi university. Two intact groups were selected, in which one was termed as experimental and the second as control group. The experimental group was taught using the Smartboard while the control group was taught with the traditional whiteboard, pen and book method. The treatment was given for seven weeks. A questionnaire was administered to both the groups at the beginning and the end of the study. The data was analysed using the SPSS and the results showed that there was significant difference between the experimental and control groups in terms of motivation.  

scholarly journals The impact of using the strategy of self-questioning in the achievement of students in the fifth grade in mathematics: أثر استخدام استراتيجية التساؤل الذاتي في تحصيل طلاب الصف الخامس الابتدائي في مادة الرياضيات

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Abdul Latif Al-Zakri
Keyword(s):  
Achievement Test ◽  
Experimental Methodology ◽  
Fifth Grade ◽  
Control Group ◽  
Significance Level ◽  
Fifth Grade Students ◽  
Significant Difference ◽  
And Control ◽  
The Impact ◽  
Experimental Group

This study aimed to examine the impact of the use of self-questioning in the understanding of fifth grade students in mathematics material. The researcher used the experimental methodology for independent groups to investigate the impact of the independent variable, which is a self-questioning strategy on the dependent variable, which is understanding. The study sample consisted of 42 students from the fifth grade students from Khubayb bin Udai School in Riyadh; equally divided into two groups of 21 students in each group (experimental and control), and after making sure from groups' equivalence by applying the tools of the study, having been taught the experimental group by using self-questioning strategy, while the control group has been studied the unit by using the traditional method. After the completion of the study of prescribed content study, study tools (achievement test) were applied then. The results indicated to the presence of a statistically significant difference (at the significance level <0. 05) between the mean scores of the two groups' students (experimental and control) in achievement test posttest for the experimental group. Since the results of the study were positive in increasing the achievement, the researcher recommended the need to use self-questioning to raise the level of achievement of learners in mathematics material

scholarly journals The influence of the dynamics and the level of maturity of the cortical functions as a prerequisite for the development of speech in children

2019 ◽  
Vol 147 (3-4) ◽  
pp. 199-204
Author(s):  
Maja Davidovic ◽  
Jadranka Otasevic ◽  
Nada Dobrota-Davidovic ◽  
Ivana Petronic ◽  
Dragomir Davidovic ◽  
...  
Keyword(s):  
Motor Control ◽  
Evoked Potentials ◽  
Physiological Changes ◽  
Articulation Disorder ◽  
Significant Difference ◽  
Cortical Responses ◽  
Quasi Experimental ◽  
Waveform Amplitude ◽  
And Control ◽  
The Impact

Introduction/Objective. The development of speech is the result of interaction of different systems of the cortex, which gradually acquires the ability of phonological presentation and motor control, in the presence of a series of physical and physiological changes in the morphology of the articulation system. The objective of the study was to examine the impact of laterality and cortical responses on the development of speech in children. Methods. Research is a quasi-experimental design with two groups. The sample covered 60 children from Belgrade, of both sexes, ages 5.5?7 years, divided into two groups, experimental (30) and control (30). We used the following instruments: test for assessing laterality and ascertaining evoked potentials. Results. On the visual lateralization subtest there was a statistically significant difference (?2 = 7.56, p < 0.05) between the observed groups. The visual evoked potentials on all measured parameters gave a statistically significant difference between the groups: waveform cortical responses ? left (?2 = 30.00, df = 1, p < 0.05); cortical responses ? right (?2 = 6.667, df = 1 , p < 0.05); waveform amplitude ? left (?2 = 13.469, df = 1, p < 0.05); amplitude ? right (?2 = 40.00, df = 1, p < 0.05), somatosensory potentials (?2 = 18.261, df = 1, p <0.05); waveform amplitude (?2 = 12.000, df = 1, p < 0.05); waveform latency (?2 = 5.455, df = 1, p < 0.05). Conclusion. Visual laterality, as well as visual and somatosensory cortical responses to stimuli is better in children without the present articulation disorder, which could be used for timely prevention planning.

scholarly journals The impact of online learning on student motivation in science and biology classes

2020 ◽  
Vol 13 (1) ◽  
pp. 73-87
Author(s):  
Mila Bulić ◽  
Ines Blažević
Keyword(s):  
Student Motivation ◽  
Online Teaching ◽  
Natural Sciences ◽  
Online Classes ◽  
Control Groups ◽  
Motivation For Learning ◽  
Significant Difference ◽  
Study Participants ◽  
And Control ◽  
The Impact

The research aimed to check for difference in learning motivation between students learning online and students participating in modern classroom instruction. The study participants included students attending grades 5 to 8, divided into experimental (online classes) and control groups based on pre-testing. The results show that there is no statistically significant difference in motivation between the tested sub-samples. Student motivation for learning natural sciences declines with their years of schooling, but this is not statistically significant. It can be concluded that online teaching of Science and Biology as a learning tool can be as motivating as modern teaching using active classroom methods.

scholarly journals An Experimental Comparison of the Impact of ‘Warning’ and ‘Health Star Rating’ FoP Labels on Adolescents’ Choice of Breakfast Cereals in New Zealand

Nutrients ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1545 ◽  
Author(s):  
Robert Hamlin ◽  
Benjamin Hamlin
Keyword(s):  
New Zealand ◽  
Experimental Comparison ◽  
Vienna Convention ◽  
Single Star ◽  
Star Rating ◽  
Stop Sign ◽  
Significant Difference ◽  
Nutritional Label ◽  
The Difference ◽  
The Impact

This research investigated the performance of the red, octagonal Vienna Convention traffic ‘STOP’ sign as a front of pack (FoP) warning nutritional label. While the Vienna Convention traffic light system is an established FoP label, the potential of the ‘STOP’ sign in the role has not been investigated. The performance of the ‘STOP’ label was compared with that of a single star (low nutritional value) Australasian Health Star Rating (HSR) label using a fractionally replicated Latin square design. The labels were presented on choice diads of cold breakfast cereal packets. The sample of 240 adolescents aged 16–18 was drawn from a secondary school in the South Island of New Zealand. A large and significant main effect was observed at the p < 0.01 level for the difference between the ’STOP’ sign and the control condition (no nutritional FoP label), and at p < 0.05 for the difference between the HSR and the ‘STOP’ label. There was no significant difference between the HSR FoP and the control condition. A significant non-additivity (interaction) (p < 0.01) was also observed via the fractional replication. The results indicate that the Vienna Convention ‘STOP’ sign is worthy of further research with regard to its potential as an FoP nutritional label.

Parallel Corpora in EFL Writing Classrooms

2020 ◽  
Vol 10 (2) ◽  
pp. 23-39
Author(s):  
Noorchaya Yahya ◽  
Hind Alotaibi ◽  
Dina Abdel Salam El-Dakhs
Keyword(s):  
Writing Assignments ◽  
Efl Writing ◽  
Writing Ability ◽  
Parallel Corpora ◽  
Self Evaluation ◽  
Significant Difference ◽  
Writing Tests ◽  
And Control ◽  
The Impact ◽  
Experimental Group

This study reveals the impact of using parallel corpora on EFL students' writing, and how students perceive it. Female undergraduates (n=46) in an EFL writing course in Saudi Arabia were divided randomly into experimental and control groups taught by the same instructor, using the same materials. Students in the experimental group were introduced to three parallel corpora and encouraged to use them in their writing. Tests at the beginning of the semester showed no difference in English proficiency or writing ability between groups. Over the semester, students in both groups also wrote 5 writing assignments and took three writing exams. To examine students' perceptions of parallel corpora, students in the experimental group were asked to write a self-evaluation report and answer an evaluation questionnaire. Quantitative and qualitative analysis showed significant improvement in their writing but no significant difference between groups. However, students' perception of parallel corpora was generally positive.

Effects of a Curriculum-Integrated Dance Program on Children’s Physical Activity

2020 ◽  
Vol 17 (11) ◽  
pp. 1179-1183
Author(s):  
Geeta Sharma ◽  
Tom Stewart ◽  
Scott Duncan
Keyword(s):  
Physical Activity ◽  
New Zealand ◽  
Control Group ◽  
Control Groups ◽  
Intervention Effects ◽  
Future Studies ◽  
School Time ◽  
And Control ◽  
The Impact ◽  
Children’S Physical Activity

Background: Curriculum-integrated dance programs are a promising but relatively under-researched strategy for increasing children’s physical activity (PA). The aim of this study was to determine the impact of a curriculum-integrated dance program on children’s PA. Methods: A total of 134 primary children aged 7–9 years from 4 New Zealand schools were assigned to either a dance group (n = 78) or a control group (n = 56). The dance group participated in a 6-week curriculum-integrated dance program during school time. Although the dance program focused on curricular learning, fitness and coordination were embedded in the dance sessions. Intensity of PA varied according to the focus of each dance session. PA was measured at baseline and postintervention using a waist-mounted ActiGraph GT3X+ accelerometer for 8 consecutive days. Results: There were no significant intervention effects on PA levels between the dance and control groups postintervention. Conclusion: Dance-embedded learning did not increase overall levels of PA in this study. Future studies may consider assessing longer term effects of a dance-based intervention, or programs that place more focus on PA promotion.

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