scholarly journals Evaluation of the Effects of Different Surface Configurations on Stability of Miniscrews

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Tolga Topcuoglu ◽  
A. Altuğ Bicakci ◽  
M. Cihat Avunduk ◽  
Z. Deniz Sahin Inan
Keyword(s):  
Statistical Analysis ◽  
The Other ◽  
Immediate Loading ◽  
Screw Design ◽  
Force Application ◽  
Group I ◽  
Significant Difference ◽  
The Stability ◽  
Positive Effect ◽  
Surrounding Bone

Introduction. The aim of this study was to analyze the effects of screw design and force application on the stability of miniscrews, using RTT, SEM, and histomorphometric analyses.Materials and Methods. Eighty cylindrical, self-drilling, and Ti6Al4V alloy miniscrews (1,6 × 6 mm) were used. Four mini-screws were inserted in fibulas of each rabbit, and 115 Gof force was immediately applied. Four miniscrews were inserted in the other fibula, on which no force was applied. Eight weeks after insertion, osseointegration between miniscrew and the surrounding bone was evaluated by the histomorphometric analyses, SEM, and RTT. Kruskal-Wallis and the pairedt-tests were used for statistical analysis.Results. Values obtained from Group I were significantly higher than those of the other loaded groups (). There were no differences in RTT scores among Groups II, III, and IV. Similar findings were also observed for unloaded mini-screws. There was no significant difference between Groups I and , while the differences between loaded and unloaded controls for each miniscrew were statistically significant.Conclusions. Immediate loading of miniscrews does not impair screw stability. Also, the diameter of miniscrew and more frequent thread pitches have a positive effect on stability; however, length of miniscrews does not have a significant effect on the stability.

scholarly journals Comparative Evaluation of Immediate Bond Strength to Bleached Enamel Following Application of Various Antioxidant Solutions

2017 ◽  
Vol 05 (02) ◽  
pp. 084-089
Author(s):  
Alisha Dhingra ◽  
Ashu Gupta ◽  
Anshu Minocha ◽  
Nayantara Sen
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
The Other ◽  
Sodium Ascorbate ◽  
Group V ◽  
Group I ◽  
Significant Difference

Abstract Aim: The aim of this study was to compare the reversal of shear bond strength of composite to bleached enamel immediately after bleaching followed by application of various antioxidant solutions. Material and Methods: Seventy central incisors were divided into seven groups. Groups I and II served as unbleached and bleached controls respectively. Groups III, IV, V, VI and VII served as the experimental groups and were subjected to 37.5% hydrogen peroxide bleaching followed by 10 min application of 10% sodium ascorbate, 25% alpha-tocopherol, 6.5% grape seed extract, 5% lycopene and 5% green tea extract respectively. Following composite bonding, shear bond strength was determined and the results were analyzed using ANOVA followed by Post Hoc Multiple Comparisons test. Results: The bond strength values for Group I (positive control) were maximum and significantly different than all the other groups except Grape seed extract group (Group V). When compared to Group II (bleached control), all the groups showed significantly higher bond strength. Significant difference in the bond strength values were seen between Group III (10% sodium ascorbate) and Group V. Also values for Group V were significantly different from Group VI (5% lycopene). All the other values showed insignificantly different results. Conclusion: All the antioxidant solutions improved the shear bond strength values after bleaching but only Grape seed extract application reversed the values to the non bleached levels. Lycopene was least effective. Other antioxidants showed comparable results.

scholarly journals Results of modern tuboperitoneal infertility treatment

2009 ◽  
Vol 66 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Drenka Turjacanin-Pantelic ◽  
Dragana Bojovic-Jovic ◽  
Biljana Arsic ◽  
Eliana Garalejic
Keyword(s):  
Statistical Analysis ◽  
Surgical Treatment ◽  
Infertility Treatment ◽  
P Value ◽  
Modern Approach ◽  
Vitro Fertilization ◽  
Group I ◽  
Significant Difference ◽  
Group Ii

Background/Aim. A modern approach to surgical treatment of tuboperitoneal infertility is based on laporascopic techniques. The aim of this study was to compare results of tuboperitoneal infertility treatment by the use of laparoscopy and classical laparotomy. Methods. A retrospectiveprospective study on 66 women treated operatively form tuboperitoneal infertility was performed. Data from patient's anamnesis and those related to the surgical treatment results, obtained by the use of an inquiry, were used in retrospective and prospective analysis, respectively. Chi-square test was used in statistical analysis. P value < 0.05 was considered significant. Results. Classical laparotomy was used on 34 women in a period from 1996 to 1997, while 32 women were operated laparoscopically in a period from 1999 to 2000. The results were as follows: a total number of conceived women was 16 (24%), seven in the group I (20.6%) and nine in the group II (28.1%); 13 women were with one pregnancy, six in the group I (17.6%) and seven in the group II (22%). Twice pregnant were three women, one in the group I (2.9%) and two in the group II (6.2%). The resulting pregnancies were: five women with abortion spontaneous, two in the group I (5.9%) and three in the group II (9.4%); two women with extrauterine pregnancy in the group I (5.9%); three with pretemporal birth, one in the group I (2.9%) and two in the group II (6.2%), while six women were with the temporal birth, two in the group I (5.9%) and four in the group II (12.5%). Statistical analysis showed that there was no significant difference in the results between these two groups. Conclusion. Surgical treatment of tubeperitoneal infertility, regardless of the used methods (classical laparotomy or laparoscopy) was successful in a great number of women. These methods have a great advantage over in vitro fertilization, and they should not be ignored.

scholarly journals The assessment of the stability of the corneal structure after LASIK correction of myopia by different optical zone diameters

2016 ◽  
Vol 73 (6) ◽  
pp. 572-576 ◽  
Author(s):  
Milorad Milivojevic ◽  
Vladimir Petrovic ◽  
Miroslav Vukosavljevic ◽  
Ivan Marjanovic ◽  
Mirko Resan
Keyword(s):  
Structural Parameters ◽  
Preoperative Assessment ◽  
Laser In Situ Keratomileusis ◽  
Group I ◽  
Significant Difference ◽  
Optical Zone ◽  
Corneal Structure ◽  
The Stability ◽  
Corneal Thinning

Background/Aim. Enlargement of optical zone (OZ) diameter during laser in situ keratomileusis (LASIK) correction of myopia postoperatively improves the optical outcome, however, it also leads to the increased stroma tissue consumption - progressive corneal thinning. The aim of this investigation was to present the possibility of safe OZ enlargement without impairing the structural stability of the cornea, while obtaining an improved optical outcome with LASIK treatment of shortsightedness. Methods. Preoperative assessment of the cornea structure and prediction of the ablated stroma tissue consumption was conducted in 37 patients (74 eyes) treated for shortsightedness by means of the LASIK method. With the eyes that, according to their cornea structure, had the capacity for OZ diameter enlargement of 0.5 mm, LASIK treatment was performed within the wider OZ diameter of 7.0 mm compared to the standard 6.5 mm. The following two groups were formed, depending on the diameter of the utilized OZ: the group I (the eyes treated with the OZ 6.5 mm, n = 37) and the group II (the eyes treated with the OZ 7.0 mm, n = 37). Results. No significant difference in the observed structural parameters of the cornea was detected between the groups of patients treated with different OZ diameters. The values of all the parameters were significantly bellow the threshold values for the development of postoperative ectasia. Conclusion. Diameter enlargement of the treated OZ, if there is a preoperative cornea capacity for such enlargement, will not impair the postoperative stability of the cornea structure, and will significantly improve the optical outcome.

Comparing Oculometer and Head-Fixed Reticle with Voice or Switch for Tactical Display Interaction

1988 ◽  
Vol 32 (2) ◽  
pp. 116-120
Author(s):  
Christopher C. Smyth ◽  
Mary E. Dominessy
Keyword(s):  
Statistical Analysis ◽  
Data Entry ◽  
The Other ◽  
Spatial Accuracy ◽  
Touch Panel ◽  
Standard Data ◽  
Significant Difference ◽  
Air Combat

An experiment with 15 U.S. Army enlisted military subjects was conducted to compare the performance of an oculometer, head-fixed reticle, and touch panel for data entry on a generic tactical air combat display. The subjects used voice or switch to designate data items on the display that were selected with the oculometer or fixed reticle. The touch panel was included as a standard data entry device. Statistical analysis showed a significant difference in performance for the five configurations at the .0001 level. The reticle/switch, oculometer/switch, and touch panel are significantly faster than the reticle/voice, which in turn is significantly faster than the oculometer/voice. The reticle methods are faster than the oculometer methods. The switch action is faster than voice entry. The touch panel is twice as accurate as the other methods, all of which have about the same spatial accuracy whether oculometer or reticle, voice or switch. However, the oculometer/voice has nearly twice as many selection errors as the other methods.

INADVERTANT PENETRATION OF BLOOD VESSELS DURING INFERIOR ALVEOLAR NERVE BLOCK TECHNIQUES

2013 ◽  
Vol 5 (2) ◽  
pp. 21-25
Author(s):  
Manjunath. Shankariah ◽  
Malapati Sudhakar Rao ◽  
Kalappa T Muthanna
Keyword(s):  
Nerve Block ◽  
Statistical Significance ◽  
Inferior Alveolar Nerve ◽  
The Other ◽  
Fisher Exact Test ◽  
Inferior Alveolar Nerve Block ◽  
Systemic Complications ◽  
Exact Test ◽  
Group I ◽  
Significant Difference

ABSTRACT Background The blood aspiration technique before the injection of local anesthetic solution is an essential procedure, because it prevents possible systemic’ complications. The purpose of this study is to evaluate the incidence of intravascular injection in different techniques of inferior alveolar nerve block and to know the technique which has very low incidence of vascular penetration. Methods Fifty patients in the ages of 17-70 years irrespective of sex, who were indicated for bilateral extractions of mandibular teeth were selected for this study. Patients were randomly divided into two divisions consisting of 25 patients requiring bilateral extraction procedures. In first division classical technique of inferior alveolar nerve block was administered on one side and on 2nd appointment Angelo Sargenti technique was administered on the other side. In the second division of 25 patients, indirect technique was administered on one side in 1st appointment and Clark and Holmes technique was administered on the other side in next appointment. Incidence of positive aspiration due to inadvertent penetration of inferior alveolar vessels was recorded. Results In group I positive aspiration rate was 8%, group II it was 4%, group III it was 4% and group IV it was 8%. Chi-square and fisher exact test was used and statistically there was no significant difference in the incidence of positive aspiration in all four groups. We found an overall aspiration rate of 6% in all four groups. Conclusion The incidence of positive aspiration was evaluated in all the 4 groups. There was no statistical significance in the rate of positive aspiration in all the groups included in our study.

scholarly journals Effect of Halita mouthwash on oral halitosis treatment: A randomized triple-blind clinical trial

2019 ◽  
Vol 13 (1) ◽  
pp. 31-35
Author(s):  
Zahra Jamali ◽  
Mahdieh Alipour ◽  
Syamand Ebrahimi ◽  
Marzie Aghazadeh
Keyword(s):  
Clinical Trial ◽  
Statistical Analysis ◽  
Side Effects ◽  
Oral Cavity ◽  
Oral Malodor ◽  
Group I ◽  
Significant Difference ◽  
The World ◽  
Chi Squared ◽  
Organoleptic Score

Background. Halitosis (oral malodor) is a common problem all over the world and its prevalence has been estimated at 23‒ 50%. Halitosis originates from oral cavity in 85% of patients. This clinical trial was conducted to evaluate the efficacy of the Halita mouthwash in oral halitosis treatment. Methods. Fifty subjects with an organoleptic score of >2 at baseline participated in this triple-blinded clinical trial. Subjects were divided into 2 groups. Group I subjects (N=25) were instructed to rinse with 0.2% chlorhexidine (CHX) mouthwash twice a day for 1 week. Group II subjects (N=25) used Halita mouthwash with the same instruction. Halitosis was evaluated at baseline and one week after using the mouthwashes by organoleptic method. Data were analyzed with chi-squared and Mann-Whitney U tests (P<0.05). Results. In the Halita group subjects exhibited 2.04±0.65 reduction in OLS. OLS reduction in the chlorhexidine group was 1.95±0.74. Statistical analysis showed no significant difference between the two groups (P>0.05). Conclusion. Based on the results, Halita mouthwash has the same effect on oral halitosis as routine 0.2% CHX mouthwash. Halita mouthwash has fewer side effects because of lower concentration of chlorhexidine. Therefore 0.2% CHX mouthwash could be replaced by Halita mouthwash for the treatment of halitosis.

scholarly journals A comparison of airway maintenance by cuffed Oropharyngeal airway (COPA) and laryngeal mask airway (LMA) in spontaneously breathing adult patients

2016 ◽  
Vol 11 (3) ◽  
Author(s):  
Ashraf Zia ◽  
Tahir Chaudhry ◽  
Riaz Hussain ◽  
Tafoorul Islam Ghalani
Keyword(s):  
Statistical Analysis ◽  
Laryngeal Mask Airway ◽  
Head Tilt ◽  
Adult Patients ◽  
Laryngeal Mask ◽  
Oropharyngeal Airway ◽  
Group I ◽  
Significant Difference ◽  
Group Ii ◽  
Spontaneously Breathing

In this study total hundred patients wee included. Fifty (group I) were subjected to COPA device for airway maintenance and in other fifty (group II) LMA was used. In this study first attempt successful insertion rate in group I was 90% while in group II it was 94%. However statistical analysis showed no significant different in both groups. Regarding maneuvers needed to maintain smooth breathing in group I head tilt was used in 2 %. It is significantly high in group I than in group II. Laboured breathing was seen in 6% in group I while 2% in group II. There was no significant difference in both groups. According to this study LMA is better in all respect as it is easier to insert and better fit in.

scholarly journals Efektivitas Vaksinasi Crude dan Soluble Protein Spora Myxobolus Koi terhadap Tingkat Kerusakan Usus Ikan Koi (Cyprinus carpio Koi) [ The Effectivety Crude and Soluble Protein of Myxobolus Koi Spore againts Intestine Different Degrees in Koi (Cyprinus carpio Koi)]

2019 ◽  
Vol 7 (1) ◽  
pp. 55
Author(s):  
Rachma Woro Anggarani ◽  
Gunanti Mahasri ◽  
Lucia Tri Suwanti
Keyword(s):  
Molecular Weight ◽  
Statistical Analysis ◽  
Cyprinus Carpio ◽  
Soluble Protein ◽  
Crude Protein ◽  
Soluble Proteins ◽  
Test Results ◽  
Group I ◽  
Significant Difference ◽  
Cyprinus Carpio Koi

Abstract Myxobolus koi is one species of Myxobolus sp that can cause parasitic diseases in fish called Myxobolusis. Based on the Decree of the Minister of Marine and Fisheries No: KEP.03/MEN/2010 that Myxobolus koi in the list of Fish Quarantine Pests group I. Myxosporean diseases are most numerous in the water can cause Proliferative Kidney Disease (PKD) and Whirling Disease (WD). The aim of this research is to finding, analyzing and determining the protein of spores Myxobolus koi that can effectively reduce the level of damage to the intestinal organs as well as for the prevention myxobolusis on Koi’s. Then for finding, analyzing and determining the protein of spores Myxobolus koi do isolation of spore proteins. The study consisted of three phases examination to preparation and identification of spores, isolation and analyze of crude and soluble protein spores for obtain dose and molecular weight each protein and histopathological test. This research uses descriptive method. The data presented may be narratives, images, tables or charts for each group. Intestinal histopathology test results of research carried scoring Koi’s were analyzed using the Kruskal-Wallis. The results showed a profile crude protein and soluble proteins from spores Myxobolus koi showed that the molecular weight of crude protein Myxobolus koi in this study was 150 kDa and 72 kDa and for soluble protein was 73 kDa. Results scoring the degree of infection caused by exposure to Myxobolus koi then statistically processed with an average yield of scoring in a sequence of 0; 1.6; 0.64 and 0.32. Statistical analysis showed no significant difference in the treatment of K + with crude protein, and K + with soluble proteins. Statistical analysis showed that there were significant differences in treatment with K+ and K-, K- with soluble protein and crude protein and soluble protein. Histopathological changes in the intestine in the form of inflammatory cell infiltration, necrosis and haemorage

scholarly journals The impact of Rumex vesicarius seed water extracts on mice fertility

2021 ◽  
Author(s):  
Ahmad Rashed Alhimaidi ◽  
Aiman Abdullah. Ammari ◽  
Mohammad Khair Okla ◽  
Muath Qasem Algadi ◽  
Ramzi Ahmed Amran ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Feeding Tube ◽  
Oral Feeding ◽  
The Other ◽  
Female Group ◽  
Mating Group ◽  
Group I ◽  
Significant Difference ◽  
The Impact ◽  
Seed Extracts

AbstractRumex vesicarius (RV) is an edible wild annual plant, and it is reported that it contains a good source of minerals, protein, and ascorbic acid. Several studies have indicated the anti-liver damage, anticancer, antimicrobial, and antioxidant properties of the RV plant. There are currently no reports regarding the effect of RV on fertility. Therefore, this study focuses on the impact of RV water seed extracts on mice fertility. RV plants were collected, and water seed extracts were prepared; 50 mg/kg body weight (BW) of this was then injected into the mice (male and female) using an oral feeding tube 5 days before mating (group I) or during caging of the females with the males for 1 week to detect their fertility rate. In the different female groups, no significant difference between their BW and their newborn’s BW in the treated and control groups was found. Female fertility, pregnancy, and offspring rates showed some variation within each female group and between the different female groups. In comparing the fertility and offspring rate between the different groups, there was a significant difference (P < 0.05) between groups I and III females and between groups I and IV females, while the other groups showed no significant differences. In contrast, the other groups showed no significant differences. Regarding the impact of the water seed extract on males, the BW was approximately the same in control and treated males.

“Justification of Effort” in Rats: Effects of Physical and Discriminative Effort on Reward Value

2003 ◽  
Vol 93 (3_suppl) ◽  
pp. 1095-1100 ◽  
Author(s):  
Jenny L. Jellison
Keyword(s):  
Operant Chamber ◽  
Training Session ◽  
Choice Point ◽  
The Other ◽  
Significant Difference ◽  
Reward Value ◽  
Reward Pellet ◽  
Positive Effect ◽  
Primary Reward ◽  
High Effort

The justification of effort is the tendency for humans to justify the amount of work they have put into an achievement by increasing the perceived value of that achievement after the effort has been expended. A positive effect of effort on reward value has also been reported for pigeons and starlings. The present study examined the effects of different amounts of required physical and discriminative effort on primary reward value in rats. On each day of training, rats underwent one high-effort training session and one low-effort training session in an operant chamber to earn either a grape-flavored reward pellet or a bacon-flavored reward pellet. Half of the rats exerted high effort to earn the grape pellets and low effort to earn the bacon pellets, with the arrangement reversed for the other half. On each test trial, each rat had the opportunity to consume 3 pellets of each flavor at the choice point in a T-maze. Analysis indicated no significant difference between the frequency of high-effort flavor choices and low-effort flavor choices. A positive effect of effort on reward value was not demonstrated in this experiment.

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