scholarly journals Biomechanical Properties of the Bone During Implant Placement

2020 ◽  
Author(s):  
Adam Laszlo Nagy ◽  
Nándor Tamás Práger ◽  
Zsolt Tóth ◽  
Tamás Tarjányi ◽  
Zoltán Lajos Baráth
Keyword(s):  
Bone Structure ◽  
Biomechanical Properties ◽  
Control Group ◽  
Dynamic Tests ◽  
Bone Model ◽  
Implant Placement ◽  
Significant Difference ◽  
Before And After ◽  
Group 2 ◽  
Post Hoc

Abstract Introduction: In our research we examined the biomechanical properties of a bone model. Porcine ribs are used as experimental model. Our objective is to investigate and compare the biomechanical properties of the bone model before and after implant placement. Methods: The bone samples were divided in three groups, Group 1 where ALL-ON-FOUR protocol was used during pre-drilling and placing the implants, Group 2 where ALL-ON-FOUR protocol was used during pre-drilling, and implants were not placed, and Group 3 consisting of intact bones served as a control group. Static and dynamic loading was applied for examining the model samples. Kruskal-Wallis statistical test and as post-hoc test Mann-Whitney U test was performed to analyze experimental results.Results: According to the results of the static loading, there was no significant difference between the implanted and original ribs, however, the toughness values of the bones decreased largely on account of predrilling the bones. The analysis of dynamic fatigue measurements by Kruskal-Wallis test showed significant differences between the intact and predrilled bones.Conclusions: The pre-drilled bone was much weaker in both static and dynamic tests than the natural or implanted specimens. According to the results of the dynamic tests and after a certain loading cycle the implanted samples behaved the same way as the control samples, which suggests that implantation have stabilized the skeletal bone structure, and if even one implant is lost at the implant site during All-On-Four protocol the stabilizing effect of the implants cannot be expected.

scholarly journals Biomechanical properties of the bone during implant placement

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ádám László Nagy ◽  
Zsolt Tóth ◽  
Tamás Tarjányi ◽  
Nándor Tamás Práger ◽  
Zoltán Lajos Baráth
Keyword(s):  
Bone Structure ◽  
Biomechanical Properties ◽  
Control Group ◽  
Dynamic Tests ◽  
Bone Model ◽  
Implant Placement ◽  
Significant Difference ◽  
Before And After ◽  
Group 2 ◽  
Post Hoc

Abstract Background In this research the biomechanical properties of a bone model was examined. Porcine ribs are used as experimental model. The objective of this research was to investigate and compare the biomechanical properties of the bone model before and after implant placement. Methods The bone samples were divided in three groups, Group 1 where ALL-ON-FOUR protocol was used during pre-drilling and placing the implants, Group 2 where ALL-ON-FOUR protocol was used during pre-drilling, and implants were not placed, and Group 3 consisting of intact bones served as a control group. Static and dynamic loading was applied for examining the model samples. Kruskal–Wallis statistical test and as a post-hoc test Mann–Whitney U test was performed to analyze experimental results. Results According to the results of the static loading, there was no significant difference between the implanted and original ribs, however, the toughness values of the bones decreased largely on account of predrilling the bones. The analysis of dynamic fatigue measurements by Kruskal–Wallis test showed significant differences between the intact and predrilled bones. Conclusion The pre-drilled bone was much weaker in both static and dynamic tests than the natural or implanted specimens. According to the results of the dynamic tests and after a certain loading cycle the implanted samples behaved the same way as the control samples, which suggests that implantation have stabilized the skeletal bone structure.

scholarly journals Effect of Lidocaine- and Prilocaine-Based Topical Anesthetics on the Inflammatory Exudates in Subcutaneous Tissue of Rats

2012 ◽  
Vol 59 (2) ◽  
pp. 57-61 ◽  
Author(s):  
Márcia Thaís Pochapski ◽  
José Laufer Neto ◽  
Jocélia Lago Jassen ◽  
Paulo Vitor Farago ◽  
Fábio André Santos
Keyword(s):  
Vascular Permeability ◽  
Subcutaneous Tissue ◽  
Pearson Correlation ◽  
Vehicle Group ◽  
Control Group ◽  
Topical Anesthetics ◽  
Anesthetic Agents ◽  
Significant Difference ◽  
Group 2 ◽  
Post Hoc

The aim of this present study was to evaluate the irritative potential of 2 topical anesthetics used in intrapocket anesthesia for periodontal scaling/root planing when applied in subcutaneous tissue of rats. Sixty animals were divided into 4 groups: group 1, saline solution (control); group 2, poloxamer gel (thermosetting vehicle); group 3, lidocaine and prilocaine poloxamer thermosetting gel; group 4: EMLA, a lidocaine and prilocaine dermatological cream. Injections of 2% Evans blue were administrated intravenously into the lateral caudal vein. In order to analyze vascular permeability, the tested substances were injected intradermally. The rats were sacrificed 3, 6, and 9 hours after injection of the substances. The dorsal skin was dissected and removed. The vascular permeability was evaluated by the measurement of area of dye extravasation and the dye was subsequently extracted after immersion in formamide. Statistical analyses were made by ANOVA with Bonferroni's post hoc test and Pearson correlation. The 2 methods to analyze the exudative phase of the inflammatory process showed statistically significant difference among the groups and periods of evaluation (P < .05). Both methods had a significant correlation (P < .0001). Under the tested conditions, the anesthetic agents showed mild initial inflammatory response when implanted in subcutaneous connective tissue.

scholarly journals INFLUENCES OF TWO COMBINATIONS OF NEUROMUSCULAR DRILLS AND ASANA PRACTICES ON AGILITY OF BASKETBALL PLAYERS

2019 ◽  
Vol 7 (7) ◽  
pp. 167-172
Author(s):  
D. Maniazhagu ◽  
S. Malar ◽  
M. Murali
Keyword(s):  
Training Programme ◽  
Control Group ◽  
Basketball Players ◽  
Random Group ◽  
Statistical Tool ◽  
Before And After ◽  
Post Test ◽  
Group 3 ◽  
Group 2 ◽  
Post Hoc

The purpose of study was to find out the influences of two combinations of neuromuscular drills and asana practices on agility of basketball players.  To achieve the purpose of the study, thirty basket ball players with the age of 10 to 13 years from Navabisha Montessori School, Velachery, Chennai, Tamilnadu were selected as subject at random. The study was formulated as pre and post test random group design. The selected subject was divided into three equal groups. The group-1 (n=10, NMD-AP) underwent neuromuscular drills combined with asana practices. The group-2 (n=10, AP-NMD) underwent asana practices combined with neuromuscular drills and group 3 served as control group (n=10, CG). In this study, two training programme were adopted as independent variables and the agility was selected as dependent variable. It was tested by T test; scores recorded in seconds. The agility tested before and after the training period. The collected pre and post data was critically analyzed with apt statistical tool of analysis of co-variance (ANCOVA). The Scheffe’s post hoc test was used to find out pair-wise comparisons between groups. The result clearly proved that there was a significant improvement on agility in experimental groups than the control group.

scholarly journals Effects of Plyometric, Strength and Change of Direction Training on High-School Basketball Player’s Physical Fitness

2021 ◽  
Vol 78 (1) ◽  
pp. 175-186
Author(s):  
Eduardo Sáez de Villarreal ◽  
Jose Galán Molina ◽  
Guillermo de Castro-Maqueda ◽  
José V. Gutiérrez-Manzanedo
Keyword(s):  
High School ◽  
Physical Fitness ◽  
Repeated Measures ◽  
Control Group ◽  
Basketball Players ◽  
Change Of Direction ◽  
Before And After ◽  
Group 2 ◽  
Post Hoc ◽  
And Control

Abstract The study aim was to compare the effects of a 7-week plyometric, strength and change of direction (COD) training program on basketball-specific performance measures in high-school players. Forty male players were randomly assigned to one of the four groups: plyometric (PG, n = 10), strength (SG, n = 10), COD (CODG, n = 10), and control group training (CG, n = 10). Two training sessions were performed at weekly intervals before basketball training. Performance of the counter movement jump (CMJ), Abalakov jump (ABKJ), 10 m zig-zag sprint, 20 m in line sprint (measurements at 10 and 20 m), and sit and reach flexibility test (SRFT) was assessed before and after the intervention. A 4 (group) × 2 (time) repeated measures analysis of variances (ANOVA) was conducted for each variable. Bonferroni post-hoc tests were used when the interaction was significant. Significant (all p < 0.05) time x group interaction was noted for SRFT, CMJ, ABK, sprint, and zig-zag 10 m, in favor of the experimental groups compared to the control group. However, improvements in physical fitness were similar between the three experimental groups. In conclusion, 7 weeks of specific plyometric, strength and COD training produced similar medium to large improvements in physical fitness of high-school basketball players.

scholarly journals Comparison of Various Cold Sterilization Techniques on Routinely used Carbide Burs and Diamond Points

2017 ◽  
Vol 7 (3) ◽  
pp. 97-102
Author(s):  
Suganthi Ranganathan ◽  
Chaitra Koppal Renukanath
Keyword(s):  
Hydrogen Peroxide ◽  
Sodium Hypochlorite ◽  
Culture Media ◽  
Brain Heart Infusion ◽  
Control Group ◽  
Microbial Count ◽  
Group I ◽  
Significant Difference ◽  
Before And After ◽  
Post Hoc

ABSTRACT Aim The aim of this study is to compare the various cold sterilization techniques for sterilizing dental burs and diamond points by assessing the microbial growth in culture media on them before and after sterilization. Materials and methods The following four disinfectants were used: 2% glutaraldehyde, 5.2% sodium hypochlorite, hydrogen peroxide, and 70% ethanol. There were two main groups taken as group I-carbide burs and group II-diamond burs. A total of 48 samples were collected, 12 samples per disinfectant. Each sample has two burs collected from same patient. One acts as control group which means only microbial count was deter- mined without disinfection. The other one would be determined as microbial count before and after disinfection. The microbial assessment was done using brain heart infusion (BHI) broth and counted by plating in chocolate blood agar and MacConkey agar. Results The obtained results were statistically analyzed by one-way analysis of variance (ANOVA) test and post hoc test. The results revealed that there was statistically significant difference between sodium hypochlorite and surgical spirit, sodium hypochlo- rite and hydrogen peroxide. There was no statistically significant difference between sodium hypochlorite and glutaraldehyde. Conclusion The results of this study revealed that sodium hypochlorite and glutaraldehyde are most effective than hydro- gen peroxide, and surgical spirit is the least effective disinfectant. However, there was clinical significance in level of disinfection of all four disinfectants. How to cite this article Ranganathan S, Manvi S, Gopalakrishna S, Renukanath CK. Comparison of Various Cold Sterilization Tech- niques on Routinely used Carbide Burs and Diamond Points. Int J Prosthodont Restor Dent 2017;7(3):97-102.

scholarly journals Saliva Contamination Effect on Shear Bond Strength of Self-etching Primer with Different Debond Times

2007 ◽  
Vol 77 (5) ◽  
pp. 901-906 ◽  
Author(s):  
Tamer Turk ◽  
Selma Elekdag-Turk ◽  
Devrim Isci ◽  
Fethiye Cakmak ◽  
Nurhat Ozkalayci
Keyword(s):  
Control Group ◽  
Group 4 ◽  
Contamination Effect ◽  
Significant Difference ◽  
Before And After ◽  
Group 3 ◽  
Bond Strengths ◽  
Group 2 ◽  
Saliva Contamination ◽  
Group 1

Abstract Objective: To evaluate shear bond strengths (SBSs) of a self-etching primer (SEP) following saliva contamination at different stages of bonding at debond times of 5, 15, and 30 minutes and 24 hours. Materials and Methods: Two-hundred forty human premolars were divided into four groups: group 1, uncontaminated; group 2, saliva contamination after priming; group 3, saliva contamination before priming; and group 4, saliva contamination before and after priming. Four subgroups according to debond times of 5, 15, 30 minutes and 24 hours were composed. Metal brackets were bonded with an SEP (Transbond Plus) and light-cure adhesives paste (Transbond XT). SBS values and the adhesive remnants were determined. Results: The highest SBS was obtained at a debond time of 24 hours for the control group. This was significantly different from the other groups. SBSs at 5, 15, and 30 minutes showed no significant difference from each other in the control group (P &gt; .05). Lowest SBSs were obtained at a debond time of 5 minutes for groups 1, 2, 3, and 4 (8.38, 7.10, 7.06, and 6.26 MPa, respectively) and were not significantly different from each other (P &gt; .05). SBSs at 24 hours were not significantly different from each other for groups 2, 3, and 4 (P &gt; .05). Significant differences were found in the adhesive remnant (P &lt; .001). Conclusions: SEP (Transbond Plus) may produce clinically acceptable bracket bonding after 5, 15, and 30 minutes from time of placement on the teeth, even with light and heavy saliva contamination.

scholarly journals PENGARUH PEMBERIAN ULTRASOUND THERAPY DAN NEUROMUSCULAR TAPING DALAM MENINGKATAN AKTIVITAS FUNGSIONAL PADA KASUS OSTEOARTHRITIS LUTUT

2019 ◽  
Author(s):  
Trisna Narta Dewi, A.A.N ◽  
Yudi Pramana ◽  
Eka Septian Utama, A.A.Gd ◽  
Surya Adhitya P.Gd
Keyword(s):  
Functional Activity ◽  
Joint Disease ◽  
Control Group ◽  
Ultrasound Therapy ◽  
Functional Activities ◽  
A Value ◽  
Significant Difference ◽  
Before And After ◽  
Group 2 ◽  
Group 1

Background: Osteoarthritis is a complaint characterized by abnormalities in the cartilage of joints and bones nearby, this complaint is commonly felt and has become a chronic joint disease. Cartilage abnormalities will result in bones rubbing against each other, resulting in symptoms of stiffness, pain and restriction of movement in the joints that will affect the quality of functional activities performed. The aim of this study was to determine the effect of ultrasound therapy and neuromuscular taping (nmt) in increasing functional activity in cases of knee osteoarthritis.Research method: The study used experimental with randomized design type pre test and post test control group design. The study was divided into 2 groups, namely group 1 would receive Ultrasound intervention and group 2 would receive Ultrasound and neuromuscular taping intervention. The number of samples in this study was 11 samples per group so that the total number of samples in the two groups was 22 respondents. Measurements of knee functional activity values were measured by the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire.Results: Group 1 with a value of p = 0,000 (p <0.05) which showed a significant difference between the value of tenderness before and after the intervention of ultrasound therapy. Group 2 obtained a value of p = 0,000 (p <0.05) indicating there was a significant difference between the value of tenderness before and after the intervention of ultrasound therapy and neuromuscular taping. The results of the calculation of the mean difference were p = 0,0001, the data showed that there was no difference in influence between groups, which means that the provision of ultrasound therapy and neuromuscular taping was no better in increasing functional activities of knee OA patients compared to ultrasound therapy.Conclusion: the provision of ultrasound therapy and neuromuscular taping is not better in increasing

scholarly journals EFEKTIVITAS LAYANAN BIMBINGAN KELOMPOK DALAM MENINGKATKAN ASERTIVITAS SISWA

2018 ◽  
Author(s):  
Firman - Firman
Keyword(s):  
Computer Software ◽  
Control Group ◽  
Significant Difference ◽  
Before And After ◽  
Equivalent Control ◽  
Kolmogorov Smirnov ◽  
Group 3 ◽  
The Difference ◽  
Group 2 ◽  
Group Guidance

Nowadays found some student at SMK N 9 Padang prefer to follow a decision of a friend than follow self decision. This research to reveal; 1) the difference assertiveness students group experiment before and after given group guidance 2) the difference assertiveness students the control group before and after without group guidance 3) the difference assertiveness student group experiment given group guidance with student the control group without given group guidance. This research is a quantitative with approach Quasi Experiment Design in type design the Non Equivalent Control Group. The population research was students of X Tata Boga SMK N 9 Padang and samples in this research chosen using a technique purposive sampling. The instrumen used the Questionare. Data then analyzed using Wilcoxon Signed Ranks Test and Kolmogorov Smirnov Two Independent Samples with program computer software Statistical Product and Service Solution (SPSS) Version 20. Based on the research, this research founds; 1) there are significant difference assertiveness students group experiment before and after given guidance group 2) there is no significant difference assertiveness students the control group before and after without given guidance group 3) there are significant difference assertiveness students the experiment group given guidance group with the control group without given guidance group.

scholarly journals Expression of salivary miRNA 21 in Oral Submucous Fibrosis (OSMF): An observational study

MicroRNA ◽  
2020 ◽  
Vol 09 ◽  
Author(s):  
Shesha Prasad R ◽  
Anuradha Pai ◽  
Shyamala K ◽  
Anisha Yaji
Keyword(s):  
Large Scale ◽  
Oral Submucous Fibrosis ◽  
Expression Patterns ◽  
Disease Process ◽  
Control Group ◽  
Significant Difference ◽  
Quantification Analysis ◽  
Group 2 ◽  
Severity Of The Disease ◽  
Post Hoc

Objective: To observe the expression patterns of salivary mRNA 21 in different stages and grades of OSMF and also in habitual arecanut chewers without OSMF. Subjects and methods: The study consisted of a total of 185 samples, where 61 patients had chewing habits (chewing gutkha and other forms of arecanut) and had OSMF (Group 1). Sixty-one patients had chewing habits but did not have OSMF (Group 2), and 63 were normal healthy patients (control group) without any chewing habits (Group 3). Unstimulated saliva samples were collected from patients following the standard operating procedures. miRNA 21 was isolated and purified from saliva samples using the miRNeasy Mini Kit, Qiagen. The primers for miRNA relative quantification analysis were designed using the Primer Express software of Applied Biosystems. Quantification of all the samples was carried out using SYBR chemistry in an Applied Biosystems Real-Time PCR. Results: There was no statistically significant difference between the demographic characteristics of patients. There was a statistically significant difference between the expressions of miRNA 21 amongst the three groups noted in Kruskal Wallis test. (<0.001*) A post hoc test was done to confirm the statistical difference between patients within all three groups. There was no statistically significant difference noted between the OSMF group and patients with chewing habits group (G1 vs. G2 p: 0.10), but there was a significant difference when compared with normal patients. (G1 vs G3 p: <0.001*) and (G2 vs G3 <0.001*) Conclusion: This study concludes that miRNA 21 is overexpressed in OSMF and chewing habit patients. But the expression levels were not significantly associated with the severity of the disease process. A long term and large scale study are required to assess its application as a diagnostic profibrotic marker in OSMF.

scholarly journals Vocabulary Analogy as Instructional in Enhancing Reading Comprehension

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Fajrianor Fajrianor
Keyword(s):  
Reading Comprehension ◽  
Junior High School ◽  
Null Hypothesis ◽  
Control Group ◽  
Test Results ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Group 2 ◽  
Experimental Group

This research was designed to find out the effects of vocabulary analogy to reading comprehension of seventh grade students of State Junior High School 9, Yogyakarta, Indonesia. Specifically it sought to answer the following questions: 1) How is the effects in reading comprehension of the students taught with  Vocabulary  Analogy  or  without  vocabulary  analogy?  2)  Is  there  a significant difference in the reading comprehension between the control and experimental groups based on the pre-test and post-test results? A test was conducted for control and experimental groups before and after the treatment process. T-test was computed to reveal whether there was a significant  difference in  the pre-test  and post-test results of the control and experimental groups. Findings of the research were: 1) The use of vocabulary analogy improved students’ reading comprehension 2) The computed T value based from the results of pre-test in the control and experimental groups is 0.130,  lower  than  T  tabular  value  of  1.996.  This  result  accepts  the  null hypothesis that there is no significant difference in the results of pre-test of control and experimental groups. Moreover, treatments were given to control and experimental groups after the pre-test, control group was taught without vocabulary analogy and experimental group was taught with vocabulary analogy before the post-test for each group. The computed T value in the post-test of the control and experimental groups is 11.15, higher than T tabular value of 1.996 at5% level significance. This result rejects the null hypothesis that there is no significant difference in the results of pre-test and post-test of control and experimental groups. Based on findings, the following conclusions were drawn: 1) The use of vocabulary  analogy  had  significantly  influenced  students’  reading comprehension particularly of the experimental group 2) There is significant difference in the post-test results of the control and experimental groups. Null hypothesis was rejected since the computed T value was higher than the T tabular value.

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