scholarly journals Sinus Mucosa Thickness Changes and Ostium Involvement after Maxillary Sinus Floor Elevation in Sinus with Septa. A Cone Beam Computed Tomography Study

2021 ◽  
Vol 9 (8) ◽  
pp. 82
Author(s):  
Shingo Kato ◽  
Yuki Omori ◽  
Masatsugu Kanayama ◽  
Atsuya Hirota ◽  
Mauro Ferri ◽  
...  
Keyword(s):  
Control Group ◽  
Membrane Thickness ◽  
Control Groups ◽  
Sinus Floor Augmentation ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Changes Over Time ◽  
And Control ◽  
Sinus Mucosa ◽  
Over Time

Background: A thickening of the sinus mucosa is observed after sinus floor augmentation. The objective of this retrospective study was to evaluate the influence of the presence of septa in the dimensional variation and ostium involvement over time of the Schneiderian mucosa after sinus floor augmentation. Materials and Methods: Fifteen sinuses with septa (septa group) and 15 without (control group) were selected. CBCTs taken before surgery, and were analyzed after 1 week and after 9 months. Schneiderian membrane thickness changes over time and involvement of the ostium were evaluated. Results: Four perforations occurred in the septa group and none in the control group. After 1 week of healing, the sinus mucosa thickness increased in height by 5.7 mm and 7.1 mm in the septa and control groups, respectively. In this period, the patency of the ostium decreased in both groups, and three infundibula were obstructed in the septa group, and five in the control group. The mucosa was thicker and the edema was closer to the ostium in the control compared to in the septa group. After 9 months of healing, the dimensions regressed to normal pattern and no obstruction of the infundibula were observed. No statistically significant differences were found between septa and control groups. Conclusions: after one week of healing, the sinus mucosa increased in dimensions in both septa and control groups. However, the sinus mucosa presented a tendency of being thicker and closer to the ostium, resulting in a higher number of infundibula obstructions, in the control group compared to in the septa group. After 9 months, the sinus mucosa regressed to normal dimensions and no obstructions of the infundibula were observed in any group.

Colonization of Broiler Chicks by Salmonella Typhimurium Definitive Phage Type 104

2001 ◽  
Vol 64 (11) ◽  
pp. 1698-1704 ◽  
Author(s):  
PAULA J. FEDORKA-CRAY ◽  
SCOTT R. LADELY ◽  
J. STAN BAILEY ◽  
NORMAN J. STERN
Keyword(s):  
Salmonella Typhimurium ◽  
Broiler Chickens ◽  
Phage Type ◽  
Control Group ◽  
Broiler Chicks ◽  
Control Groups ◽  
Salmonella Spp ◽  
And Control ◽  
Salmonella Senftenberg ◽  
Over Time

The prevalence of an antibiotic-resistant strain of Salmonella Typhimurium definitive phage type 104 (DT104) has increased dramatically in recent years resulting in increased morbidity and mortality in both animals and humans. Colonization and shedding of Salmonella Typhimurium DT104 was studied in broiler chickens in two trials. In trial 1, 180 day-of-hatch chicks (n = 60 per group, n = 30 per replicate) were challenged with 106 CFU DT104 (wild-type isolate from poultry) or were commingled with a seeder chick challenged with 106 CFU DT104. In trial 2, 360 day-of-hatch chicks (n = 120 per treatment, n = 30 per rep) were divided into three groups. Chicks in the susceptible group were commingled with two seeder chicks that were orally challenged with 107 CFU/bird of a pan-sensitive strain of Salmonella Typhimurium DT104. Chicks in the resistant group were commingled with two seeder chicks that were orally challenged with 107 CFU/bird DT104 used in trial 1. For both trials, a control group was not exposed to DT104, composite fecal samples were evaluated twice weekly for levels of Salmonella shedding and 20 chicks per group were necropsied weekly and their cecal contents were cultured. At hatch all groups were colonized with naturally occurring Salmonella Senftenberg and Salmonella Mbandaka (trial 1) or Salmonella Senftenberg and Salmonella Ohio (trial 2) prior to exposure to DT104. Throughout the study, the level of Salmonella spp. shedding in feces (trial 1 means 3.1, 2.9, and 3.0 log10 CFU per g feces for challenged, seeder, and control groups, respectively) or ceca (trial 2 means 2.9, 2.9, and 2.5 log10 CFU per g ceca for resistant, susceptible, and control groups, respectively)did not differ among groups. In trial 1, colonization of DT104 remained constant at higher levels in the challenged group (mean 87%, P < 0.01), increased over time in the seeder group (10 to 50%, P < 0.02) and was not recovered from the control chicks. Salmonella Mbandaka colonization remained steady within each group with challenge and seeder groups maintaining higher levels of colonization than the control group. Salmonella Senftenberg colonization levels tended to decline (P = .058) over time in the challenged group (20 to 0%) and significantly decreased (P < 0.01) over time for both the seeder (80 to 0%) and control chicks (85 to 10%). In trial 2, the percentage of chicks colonized with susceptible DT104 declined (r = 0.90, P < 0.05) over the course of the trial from 45 to 0%, while recovery of the resistant DT104 persisted at a mean percentage of 27%. DT104 was not recovered from the control chicks. Salmonella Ohio colonization levels tended to decline (r = 0.79, P > 0.05) over time in the control group (75 to 20%) and significantly decreased (P < 0.05) over time in both susceptible and resistant groups (40 to 10%, r = 0.82 and 55 to 5%, r = 0.85, respectively). Salmonella Senftenberg was recovered from the control group at low frequency throughout the trial and was not recovered from the other groups. For either trial, no apparent affect on morbidity or mortality was observed. Introduction of DT104 by commingling may induce colonization resulting in persistent high levels of shedding in flocks simultaneously with other Salmonella species.

Effect of Indoor Wall Climbing on Self-Efficacy and Self-Perceptions of Children with Special Needs

2009 ◽  
Vol 26 (3) ◽  
pp. 259-273 ◽  
Author(s):  
Erin R. Mazzoni ◽  
P. Lynn Purves ◽  
Julie Southward ◽  
Ryan E. Rhodes ◽  
Viviene A. Temple
Keyword(s):  
Special Needs ◽  
Self Efficacy ◽  
Control Group ◽  
Children With Special Needs ◽  
Control Groups ◽  
Self Perceptions ◽  
Self Worth ◽  
And Control ◽  
The Impact ◽  
Over Time

The impact of a six-week indoor wall climbing on the perceptions of self for children with special needs aged 6–12 years was explored. Participants (n = 46) were randomly assigned to the intervention (girls, n = 4; boys, n = 19) and control groups (girls, n = 5; boys, n = 18). Belayers’ and children’s perceptions of efficacy were measured using specifically designed questionnaires and perceptions of competence and global self-worth were measured using Harter’s (1985) Self-Perception Profile for Children for participants with an adaptive age of 8 years or higher. Children’s self-efficacy and belayers’ ratings of children’s efficacy improved significantly, t(21) = 3.9, p = .001, d = .84 and F(2, 44) = 30.03, p < .001, respectively. The children’s judgments of their athletic and social competence and global self-worth, however, did not change over time or differ from the wait-listed control group (p > .05). These results suggest that it is likely that many experiences that enhance self-efficacy may be needed to improve self-perceptions.

scholarly journals The Effect of Ginger on Preventing Post-spinal Puncture Headache in Patients Undergoing Cesarean Section

2018 ◽  
Vol 7 (2) ◽  
pp. 204-210
Author(s):  
Banafsheh Mashak ◽  
Maryam Hashemnejad ◽  
Kourosh Kabir ◽  
Mansoureh Refaei ◽  
Sara Esmaelzadeh Saeieh ◽  
...  
Keyword(s):  
Cesarean Section ◽  
Spinal Anesthesia ◽  
Repeated Measures ◽  
Control Group ◽  
Control Groups ◽  
Spinal Puncture ◽  
Comparison Results ◽  
And Control ◽  
Experimental Group ◽  
Over Time

Objectives: Post-spinal puncture headache (PSPH) has constantly been one of the research priorities, especially in women undergoing cesarean section (C-section) and it is related to physical and psychological problems. The present study aimed to evaluate the effect of ginger on preventing PSPH in patients undergoing C-section. Materials and Methods: This clinical trial was conducted on 160 women undergoing C-section with spinal anesthesia, who were eligible to enter the study in the experimental and control groups. One ginger capsule (250 mg) was prescribed every 8 hours (TDS) to the experimental group 24 hours before the C-section. The prescription of ginger was continued half an hour after transfer to the post-partum ward until the PSPH onset. PSPH intensity was measured by using visual analog scale (VAS) pain scores at 6 timepoints (Time 1=30, Time 2=60, and Time 3=90 minutes vs. Time 4=3, Time 5 =6, and Time 6=12 hours) after C-section. No interventions were performed in the control group. The data were analyzed using the SPSS software by descriptive statistics and analytical tests were applied to determine the changes in PSPH intensity. Results: The comparison results of the mean score of PSPH intensity in the experimental and control groups indicated significant differences over time (P<0.05), except for the sixth time point (12 hours after C-section). In addition, the trend of changes at 6 timepoints based on the results of the repeated-measures test demonstrated that PSPH intensity significantly differed in the two groups over time (P<0.001). Conclusions: Based on the result, the oral prescription of ginger to women undergoing C-section under spinal anesthesia led to effective PSPH prevention at 5 time-points (30, 60, and 90 minutes, along with 3 and 6 hours). Further, the trend of the changes represented that the intensity of PSPH decreased in the experimental group over time. Therefore, ginger is suggested as a noninvasive and efficient method used for preventing PSPH.

scholarly journals Effect of different surface penetrating sealants on the roughness of a nanofiller composite resin

2012 ◽  
Vol 23 (6) ◽  
pp. 692-697 ◽  
Author(s):  
Murilo Baena Lopes ◽  
Paulo Cesar Saquy ◽  
Sandra Kiss Moura ◽  
Linda Wang ◽  
Fabiana Mezzaroba Ortenzi Graciano ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Composite Resin ◽  
Control Group ◽  
Light Activation ◽  
Control Groups ◽  
Steel Mold ◽  
And Control ◽  
Simulated Time ◽  
Water Dilution ◽  
Over Time

This study evaluated the effectiveness of different sealants applied to a nanofiller composite resin. Forty specimens of Filtek Z-350 were obtained after inserting the material in a 6x3 mm stainless steel mold followed by light activation for 20 s. The groups were divided (n=10) according to the surface treatment applied: Control group (no surface treatment), Fortify, Fortify Plus and Biscover LV. The specimens were subjected to simulated toothbrushing using a 200 g load and 250 strokes/min to simulate 1 week, 1, 3 and 6 months and 1 and 3 years in the mouth, considering 10,000 cycles equivalent to 1 year of toothbrushing. Oral-B soft-bristle-tip toothbrush heads and Colgate Total dentifrice at a 1:2 water-dilution were used. After each simulated time, surface roughness was assessed in random triplicate readings. The data were submitted to two-way ANOVA and Tukey's test at a 95% confidence level. The specimens were observed under scanning electron microscopy (SEM) after each toothbrushing cycle. The control group was not significantly different (p>0.05) from the other groups, except for Fortify Plus (p<0.05), which was rougher. No significant differences (p>0.05) were observed at the 1-month assessment between the experimental and control groups. Fortify and Fortify Plus presented a rougher surface over time, differing from the baseline (p<0.05). Biscover LV did not differ (p>0.05) from the baseline at any time. None of the experimental groups showed a significantly better performance (p>0.05) than the control group at any time. SEM confirmed the differences found during the roughness testing. Surface penetrating sealants did not improve the roughness of nanofiller composite resin.

scholarly journals Yoga, Physical Education, and Self-Esteem

2007 ◽  
Vol 5 (2) ◽  
pp. 13-17 ◽  
Author(s):  
Kaci A. Bridges ◽  
Melody S. Madlem
Keyword(s):  
Physical Activity ◽  
Physical Education ◽  
Self Esteem ◽  
Control Group ◽  
Control Groups ◽  
Significant Difference ◽  
Eighth Grade Students ◽  
Post Test ◽  
And Control ◽  
Over Time

Researchers studied increases in self-esteem of eighth-grade students after participation in regular physical education and yoga-enhanced physical education classes. Self-esteem was measured by the Coopersmith Self-Esteem Inventory. The Coopersmith Self-Esteem Inventory was given pre, mid, and post test in both the experimental and control group. The results showed that over the course of the eightweek intervention, self-esteem did increase in both the experimental and control groups. There was no significant difference in self-esteem between regular physical education activities and yoga. The study revealed the importance of physical activity, including yoga, for enhancing self-esteem. Theories for why self-esteem increased over time are discussed in the study.

scholarly journals Schneiderian membrane thickness: Cone Beam Computed Tomography analysis pre and post-sinus floor elevation procedures

2020 ◽  
Vol 30 (3) ◽  
pp. 11-19
Author(s):  
Cecilia González ◽  
◽  
Mario Sezin ◽  
Juan C Ibañez
Keyword(s):  
Computed Tomography ◽  
Maxillary Sinus ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Membrane Thickness ◽  
Sinus Floor Elevation ◽  
Tomographic Images ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Sinus Mucosa

Objective: To evaluate the thickness of the maxillary sinus mucosa before and after performing the elevation of the maxillary sinus floor in partially and very edentulous patients in the posterior sector using cone beam computed tomography images. Methods: Pre and postsurgical tomographic images of 31 cases were included; 24 of which were a unilateral maxillary sinus floor elevation procedure, while 7 cases involved both pneumatic cavities. Measurements were taken at the sagittal and coronal planes. All of them, perpendicular to the sinus mucosa. A retrospective analysis of cone beam computed tomography was performed and the groups were compared with the Wilcoxon test for related samples and the variables graft size, preoperative membrane thickness, age and gender with multivariate analysis. Setting the level of statistical significance p <0.05. Results: A great variability of the thickness of the sinus membrane was confirmed, both in the pre-operative and in the post-operative. It was observed that the mean values in millimeters obtained in the pre-op were 1.45 and 1.12 in the post-op. The medians showed that the membrane thickness values are more atypical and more extreme in the preoperative values (0.79) than in the postoperative values (0.94), which are more normal and uniform. Conclusion: Under the conditions analyzed, there was an absence of changes in the dimensions of the sinus mucosa in the pre and postoperative period of the tomographic images, highlighting evidence of great inter-individual variability.

Effect of Maxillary Sinus Floor Augmentation on Sinus Membrane Thickness in Computed Tomography

2012 ◽  
Vol 83 (5) ◽  
pp. 551-556 ◽  
Author(s):  
Bernhard Pommer ◽  
Gabriella Dvorak ◽  
Philip Jesch ◽  
Richard M. Palmer ◽  
Georg Watzek ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Maxillary Sinus ◽  
Membrane Thickness ◽  
Sinus Floor Augmentation ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Maxillary Sinus Floor Augmentation ◽  
Sinus Membrane

scholarly journals Application of problem-based learning and case-based learning integrated method in the teaching of maxillary sinus floor augmentation in implant dentistry

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8353
Author(s):  
Yunfei Liu ◽  
Yamei Xu ◽  
Yueheng Li ◽  
Qingqing Wu
Keyword(s):  
Case Analysis ◽  
Control Group ◽  
Case Based Learning ◽  
Sinus Floor Augmentation ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Implant Dentistry ◽  
Theory Test ◽  
Maxillary Sinus Floor Augmentation ◽  
Teacher Centered

Background Teaching of maxillary sinus floor augmentation (MSFA) is challenging for dental educators due to the varied sinus anatomy and high rate of complications. The method integrating problem-based learning and case-based learning (PBL-CBL method) may be more effective than the traditional teacher-centered method. The aim is to evaluate the efficacy of the PBL-CBL method in teaching MSFA. Materials & Methods Ninety-two students who received training between 2015 and 2017 at the Department of Implant Dentistry were divided randomly into an experimental group and a control group. Students in the experimental group were trained using the PBL-CBL method, while those in the control group were trained using the traditional teacher-centered method. After three months of training, a survey of the students’ opinions about the corresponding teaching method was carried out through a feedback questionnaire. A theory test was used to investigate the level of MSFA knowledge among the students. A case analysis was designed to test whether the students can apply the knowledge in solving new problems. Results Compared with the control method, the PBL-CBL method resulted in higher scores in both the theory test and the case analysis, and obtained a higher rate of satisfaction among the students. The difference in scores between the two methods were statistically significant (P < 0.01), Conclusion The PBL-CBL method resulted in better results regarding acquisition of academic knowledge, ability in case analysis and student satisfaction compared with the teacher-centered method. It may be a promising mode for teaching complex surgical techniques in implant dentistry and other dental fields.

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