Cleaning of long oval canals with WaveOne Gold system associated with different irrigant agitation protocols

Aim: The aim of the study was to evaluate the cleaning of mandibular incisors with WaveOne Gold® (WO) under different preparation techniques. Methods: A total of 210 human mandibular incisors were selected and divided into seven groups (n = 30), prepared by WO single-files (Small 20/.07 – WOS; Primary 25/.07 – WOP; Medium 35/.06 – WOM; or Large 45/.05 - WOL) and sequential-file techniques (WOS to WOP; WOS to WOM; and WOS to WOL). Further subdivision was made according to irrigation protocol: control group (manual irrigation - CON), E1 Irrisonic® - EIR, and EDDY® - EDD. Debris removal and the smear layer were evaluated by scanning electron microscopy. Data were analyzed by using Spearman’s correlation test. The significance level was set at 5%. Results: For debris and smear layer removal, WOS and WOP, EIR differed from CON and EDD (p <0.05). Conclusion: Regardless of the instrumentation used, the agitation of the irrigant solution provided better cleanability. These findings reinforce the need for agitation techniques as adjuvants in cleaning root canal systems in mandibular incisors.

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Evaluation of permeability of root dentin after different irrigation protocols

Srpski arhiv za celokupno lekarstvo ◽

10.2298/sarh170731193b ◽

2018 ◽

Vol 146 (9-10) ◽

pp. 492-497 ◽

Cited By ~ 1

Author(s):

Ljiljana Bjelovic ◽

Jelena Krunic ◽

Nikola Stojanovic ◽

Jelena Eric ◽

Tatjana Kanjevac

Keyword(s):

New Combination ◽

Control Group ◽

Scanning Electron Microscopy Data ◽

Test Results ◽

Dye Penetration ◽

Dentin Permeability ◽

Significant Difference ◽

Root Dentin ◽

Microscopy Data ◽

And Control

Introduction/Objective. This study was aimed at evaluating dentin permeability after irrigation with sodium hypochlorite (NaOCl) and final rinse with chlorhexidine (CHX), ethylenediamine tetraacetic acid (EDTA) + CHX, and new combination products: QMiX or MTAD. Methods. Roots of 60 maxillary incisors were randomly divided into five groups (n = 12) before instrumentation and irrigation with NaOCl according to the final irrigation regimen: CHX (2% CHX), EDTA + CHX (17% EDTA + 2% CHX), QMiX, MTAD, and control group (distilled water). After final irrigation, ten roots of each group were horizontally sectioned and dye penetration was evaluated in the coronal, middle, and apical thirds. Remaining samples were subjected to scanning electron microscopy. Data were analyzed with ANOVA/Tukey?s test. Results. Less dye penetration was found in CHX group compared with control as well as with QMiX and MTAD group in all thirds (p < 0.05). A significant difference between the control and EDTA + CHX, QMiX or MTAD group was observed only in the apical root third (p < 0.05). Conclusion. Dentin permeability was significantly reduced after final irrigation with CHX, but not after use of other final irrigation solutions, except in the apical third of the root canal.

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Surface roughness of glass ionomer cements indicated for atraumatic restorative treatment (ART)

Brazilian Dental Journal ◽

10.1590/s0103-64402006000200004 ◽

2006 ◽

Vol 17 (2) ◽

pp. 106-109 ◽

Cited By ~ 18

Author(s):

Renata Cristiane da Silva ◽

Angela Cristina Cilense Zuanon

Keyword(s):

Surface Roughness ◽

Glass Ionomer Cement ◽

Atraumatic Restorative Treatment ◽

Scanning Electron Microscopy Data ◽

Glass Ionomer Cements ◽

Glass Ionomer ◽

Significance Level ◽

Restorative Treatment ◽

Significant Difference ◽

Microscopy Data

The purpose of this study was to evaluate the surface roughness of four conventional chemically cured glass ionomer cements (Fuji IX, Ketac Molar, Vidrion R and Vitromolar) commonly used in atraumatic restorative treatment (ART) immediately after material preparation. Twenty specimens of each glass ionomer cement were fabricated and surface roughness was measured after material setting. The specimens were further examined under scanning electron microscopy. Data were analyzed statistically by Kruskal-Wallis test and Mann-Whitney test at 5% significance level. Two-by-two comparisons showed statistically significant difference (p<0.05) between all materials, except for Ketac Molar and Vidrion R, which had statically similar results (p>0.05). Regarding their results of surface roughness, the materials can be presented in a crescent order, as follows: Ketac Molar < Vidrion R < Fuji IX < Vitromolar. In conclusion, from the tested glass ionomer cements, Fuji IX, Ketac Molar and Vidrion R presented acceptable surface roughness after setting reaction while Vitromolar showed remarkably higher surface roughness.

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Effects of remineralization procedures on shear bond strengths of brackets bonded to demineralized enamel surfaces with self-etch systems

The Angle Orthodontist ◽

10.2319/041515-247.1 ◽

2015 ◽

Vol 86 (4) ◽

pp. 661-667 ◽

Cited By ~ 4

Author(s):

Zeliha Müge Baka ◽

Mehmet Akin ◽

Zehra Ileri ◽

Faruk Ayhan Basciftci

Keyword(s):

Surface Roughness ◽

Adhesive System ◽

Orthodontic Brackets ◽

Control Group ◽

Scanning Electron Microscopy Data ◽

Group I ◽

Demineralized Enamel ◽

Previously Treated ◽

Bond Strengths ◽

Microscopy Data

ABSTRACT Objective: To compare the effects of different remineralization procedures on the surface roughness of teeth, shear bond strengths (SBSs), and Adhesive Remnant Index scores of self-etching primer (SEP) used to bond orthodontic brackets to previously treated demineralized enamel surfaces. Materials and Methods: A total of 140 extracted human premolar teeth were randomly divided into seven equal groups. Group I was the control group. A demineralization procedure was performed in the other six groups. A remineralization procedure was performed before bonding by using casein phosphopeptide-amorphous calcium phosphate, fluoride, a microabrasion mixture (18% hydrochloric acid-fine pumice), a microabrasion agent, and resin infiltration in groups III to VII. Brackets were bonded using a self-etching primer/adhesive system. The specimens were tested for SBS. The roughness and morphology of the enamel surfaces were analyzed using profilometer and scanning electron microscopy. Data were analyzed with analysis of variance, Tukey, and G-tests at the α = .05 level. Results: Significant differences were found in the SBS values among the seven groups (F = 32.69, P = .003). The lowest SBS value was found in group II (2.62 ± 1.46 MPa). No significant differences were found between groups I, III, and VII, between groups III and IV, or between groups V and VI. The differences in the roughness values were statistically significant among the groups (P = .002). Conclusions: Remineralization procedures restore the decreased SBS of orthodontic brackets and decrease surface roughness caused by enamel demineralization. SEPs provide clinically acceptable SBS values for bonding orthodontic brackets to previously treated demineralized enamel surfaces.

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Efektifitas Penggunaan Metode Pembelajaran Simulasi Dengan Latihan Terhadap Keterampilan Pengisian Partograf Pada Mahasiswa Semester II Di Prodi Kebidanan (D-III) Universitas Kadiri Tahun 2015

Jurnal Ilmu Kesehatan ◽

10.32831/jik.v4i1.69 ◽

2017 ◽

Vol 4 (1) ◽

pp. 12

Author(s):

Dessy Lutfiasari ◽

Mahmudah Mahmudah

Keyword(s):

Current Method ◽

Skills Training ◽

Health Sciences ◽

Control Group ◽

Learning Methods ◽

Control Group Design ◽

Significance Level ◽

Whitney Test ◽

Mann Whitney Test ◽

Training Simulation

The use of the current method of learning very big influence on the growth and development of students' creativity and interest for all subjects to be taught, especially in the use of partograf. From interviews to the 10 students of IV semester Prodi Midwifery (D-III) Kadiri University is known that 4 (40%) of students said it was understood, 4 (40%) of other students say they are confused and 2 (20%) of them said that he was a student not familiar with partograf. This shows the lack of understanding of students in filling partograph. The research objective is to determine the effectiveness of the use of learning methods for skills training simulation with filling partograph the second semester students in Midwifery (D-III) Kadiri University Faculty of Health Sciences in 2015. The research design used is pre experiment with design Static Group Comparison/Posttest Only Control Group Design. The population studied were all students of the second semester in Midwifery (D-III) Faculty of Health Sciences University of Kadiri numbered 50 students and sampling techniques Federer totaled 32 students. This is a research instrument partograph sheet. Results of the study were analyzed using the Mann Whitney test with a significance level of 0.05 were used.The results showed 7 respondents (46.7%) are adept at using partograf with simulation teaching methods and 6 respondents (40.0%) are adept at using partograph with practice learning methods. Data were analyzed by Mann Whitney test obtained ρ = 0.965; α = 0.05 means that H0 is accepted and H1 rejected. This means there is no difference in the effective use of learning methods for skills training simulation with partograph filling. Based on the results of this study are expected to choose the method of learning as a learning method in charging partograph because both methods equally effective.; Keywords: simulation methods, drilling methods, partograph filling

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The effect of realistic mathematics education on student achievement in 8th grades geometric objects teaching

African Educational Research Journal ◽

10.30918/aerj.91.20.205 ◽

2021 ◽

Vol 9 (1) ◽

pp. 20-31

Author(s):

Hasan Huseyin Aksu ◽

Keyword(s):

Academic Success ◽

Traditional Approach ◽

T Test ◽

Learning Activities ◽

Control Group ◽

Structured Interviews ◽

Significance Level ◽

8Th Grade ◽

And Control ◽

Dependent Samples

The purpose of this study is to answer if there is a reasonable difference on academical success of students who get education with traditional and RME approach question on “Teaching geometrical objects to 8th grade students” subject. Study group consists of 47 students which contains 21 experimental and 16 control group from “Ordu Anadolu İmam Hatip High School Project School” in Altinordu, Ordu. Experimental and control group have same academical success level, as the school which this study has runned is a school which accepts students with an exam only. After the experimental and control groups were created, a 25 question pre-test was performed to understand the level of knowledge of the group regarding geometrical objects. The same test was performed on the same groups 8 weeks later as retention test. To determine opinions of the students in experimental group regarding RME and related learning activities, semi-structured interviews are conducted. The data obtained from the pretest, posttest and retention tests were analyzed with t-test for independent samples and t-test for dependent samples and variance analysis for mixed measurements with 0.05 significance level. According to the results, it is seen that learning activities prepared according to RME approach are much more effective than learning activities prepared according to the traditional approach on students’ academic success.

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THE EFFECT OF USING WRITTEN RETELLING STRATEGY TOWARD THE STUDENTS READING COMPREHENSION AT THE SECOND GRADE OF SENIOR HIGH SCHOOL KARTIKATAMA METRO LAMPUNG INDONESIA

American Journal of Economics and Business Management ◽

10.31150/ajebm.vol1.iss3.29 ◽

2018 ◽

Vol 1 (3) ◽

pp. 26-37

Author(s):

Rana Wijaya ◽

M.Ihsan Dacholfany

Keyword(s):

High School ◽

Reading Comprehension ◽

Language Learning ◽

Learning Process ◽

Quantitative Research ◽

Senior High School ◽

Second Grade ◽

Control Group ◽

Significance Level ◽

Written Retelling

Reading is one of the important aspects of language learning. By reading, the learners get knowledge and information. But in reality, students are often ignoring to mastering this skill. It is the researchers found in the second grade of SENIOR HIGH SCHOOL Kartikatama Metro Lampung Indonesia, where students have difficulty in reading comprehension, so this leads to lower their learning. Therefore, to improve students' reading comprehension ability, researchers used Written Retelling Strategy (WRS) in the learning process. The purpose of this study was to determine whether the use of Retelling Written Strategy (WRS) has a positive effect on students' reading comprehension in learning English. Written Retelling Strategy (WRS) considered as one strategy that makes students more active and fun in the learning process to comprehend some text. Forms of this research are Quantitative Research conducted in two classes. Each class is divided into the trial and reserve grade. Author implements True Experimental Design (Pure Research) by applying a pre-test and post-test as an instrument. In accordance with the method of this study, the data were analyzed using t-test that allows knowing the difference between the experimental group that used a class of written retelling strategy and the control group who did not use written retelling strategy. Finally, the research data show that t observations = 3,590 and is included in the category of high impact. Furthermore, t observation T Table consult with a significance level of 5% = 2.010 and 1% = 2,682, the data states that t observations greater than the T Table, this could mean that Hi is received. And could mean that there is a positive and significant influence between experiment class and class control on the use of written retelling strategy at second grade of Senior High School Kartikatama Metro.

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Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

Journal of Clinical Medicine ◽

10.3390/jcm9082465 ◽

2020 ◽

Vol 9 (8) ◽

pp. 2465

Author(s):

Inês Ferreira ◽

Pedro S. Babo ◽

Ana Cristina Braga ◽

Manuela E. Gomes ◽

Irene Pina-Vaz

Keyword(s):

Binary Mixture ◽

Methyl Ethyl Ketone ◽

Solvent Mixture ◽

Methyl Ethyl ◽

Micro Computed Tomography ◽

Significance Level ◽

Root Canals ◽

Gutta Percha ◽

Ah Plus ◽

Mandibular Incisors

Background: This work aimed to evaluate the efficacy of sonic agitation of a binary mixture of solvents (methyl ethyl ketone/tetrachloroethylene) on filling remnants removal and compare the effects of solvent agitation with the enlargement to the next instrument size. Methods: Twenty-four mandibular incisors were prepared with ProTaper Next (X1, X2) and obturated with the single-cone technique and AH Plus sealer. The teeth were retreated with ProTaper Universal Retreatment and ProTaper Next and divided into two groups (n = 12) according to the final instrument (X3 or X4). All canals were submitted to a supplementary procedure consisting of a mixture of solvents―methyl ethyl ketone/tetrachloroethylene, agitated with EndoActivator. The volume of filling remnants was assessed through micro-computed tomography in the apical 5 mm. Statistical analysis was performed with a significance level of 5%. Results: The supplementary procedure of agitation of the solvent mixture was beneficial in both groups (p < 0.05). There were no statistically significant differences between canals re-prepared until X4 and canals re-prepared until X3 plus solvent (p > 0.05). Conclusions: An additional step with a two-solvent solution potentiated by EndoActivator showed to be very effective for the removal of gutta-percha and resinous sealer remnants from apical root canals of mandibular incisors, avoiding further enlargement.

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Association of ADRB1 gene polymorphism with dilated cardiomyopathy

European Heart Journal Acute Cardiovascular Care ◽

10.1093/ehjacc/zuab020.012 ◽

2021 ◽

Vol 10 (Supplement_1) ◽

Author(s):

A Chernova ◽

SY Nikulina ◽

OO Kuznecova

Keyword(s):

Statistical Significance ◽

Rare Allele ◽

Public Institution ◽

Control Group ◽

Significance Level ◽

Funding Sources ◽

Idiopathic Cardiomyopathy ◽

Homozygous Genotype ◽

Number Of Patients ◽

Medical University

Abstract Funding Acknowledgements Type of funding sources: Public Institution(s). Main funding source(s): Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University Aim. To evaluate the Association of rs1801252 polymorphism of the ADRB1 gene with dilated idiopathic cardiomyopathy (DCMP) and myocardial dilation of ischemic origin (DMI). Subjects and methods. The study included patients with ICMP and MD IG in the number of 221 people. The average age of the subjects was in the range of 55.30 ± 9.69 years. We divided the patients into 2 groups: the first – patients diagnosed with idiopathic dilatation cardiomyopathy and the second-patients with myocardial dilatation of ichemic origin. The number of patients in the first group was 111, including 99 men (89.2%) and 12 women (10.8%). The average age of patients in this group is 51.73 ± 9.74 years, in men 51.00 ± 8.96 years, in women 57.75 ± 3.71 years. The second group included patients with myocardial dilatation of ischemic origin. Their number is 110 people, including 100 men (91.5%) and 10 women (8.5%). The average age of respondents is 58.68 ± 8.38 years, for men 58.29 ± 8.46 years, for women 62.90 ± 6.29 years. The control group included patients who had no manifestations of cardiovascular diseases. Their number is 121 people (average age 53.6 ± 4.8 years). The patients underwent laboratory and instrumental studies, as well as molecular and genetic studies of the A145G polymorphism of the ADRB1 gene (rs1801252 ). All patients underwent coronary angiography. Based on the anamnesis data and instrumental studies, those patients who could be said to have no risk factors for the development of dilatation of the heart cavities were identified in the first group. And those patients who were reliably diagnosed with CHD were in the second group, that is, dilatation of the heart cavities is due to a previous myocardial infarction, existing angina pectoris. Results. In the group with DCMP 70.3% of patients were carriers of the common homozygous A145A genotype, the heterozygous A145G genotype-27.0%, and the rare homozygous G145G genotype-2.7%. In the control group 71.9% of patients were identified as carriers of a homozygous genotype by a common allele, and 25.3% were carriers heterozygous genotype, and homozygous genotype for a rare allele – 2.7%. Statistical analysis showed no achievement of statistical significance level across any of the genotypes. In the group with DM IG, there was no association with the rs1801252 polymorphism of the ADRB1 gene. Conclusion. A statistically significant association of rs1801252 of the ADRB1 gene with DCMP was not found. The association of DM IG c rs1801252 could not be confirmed.

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Effects of Relationship Enrichment Training on Improving Marital Satisfaction of Infertile Couples: A Randomized Control Trial

Current Women s Health Reviews ◽

10.2174/1573404817666210111141202 ◽

2021 ◽

Vol 17 ◽

Author(s):

Seyedeh Zahra Masoumi ◽

Khodayar Oshvandi ◽

Masoumeh Rostami-Moez ◽

Arezoo Shayan ◽

Farideh Kazemi

Keyword(s):

Marital Satisfaction ◽

Intervention Group ◽

Analysis Of Covariance ◽

Control Group ◽

Chi Square ◽

Significance Level ◽

Significant Difference ◽

The Mean ◽

Infertile Couples ◽

Relationship Enrichment

Background: Infertility can cause low marital satisfaction. Marital satisfaction has an important effect on infertile couples’ health. Objective: This study aimed to assess the effect of relationship enrichment training on improving the marital satisfaction of infertile couples. Methods: This randomized clinical trial was conducted on 50 infertile couples in the infertility center of Fatemieh Hospital in Hamadan, Iran in 2018. Participants were matched for demographic characteristics and randomly assigned to intervention and control groups (each group had 25 couples). Informed consent was obtained from all participants. The Enrich Marital Satisfaction questionnaire and demographic information were used to collect data before the study and two months after the intervention. Two trained midwifery students taught only the intervention group the relationship enrichment topics in seven sessions (each session = 90 minutes). The data were analyzed by SPSS Statistics version 21 using analysis of covariance, independent t-test, chi-square, and Mann–Whitney. The significance level was set at p ≤ 0.05. Results: There was no significant difference in demographic and obstetric information between the two groups (p >0.05). The mean of marital satisfaction in the intervention group significantly increased among women and men from 151.00 ±28.61 to 154.88 ±22.62 and from 152.56 ±27.33 to 159.24 ±22.14, respectively, (p <0.001). Conversely, the mean of marital satisfaction decreased among women and men from 158.13 ±13.86 to 146.25 ±19.53 and from 164.25 ±17.00 to 153.17 ±27.50 in the control group (p=0.02). Conclusion: Relationship enrichment training can be effective in promoting the marital satisfaction of infertile couples. Registration number: The National Center for Strategic Research in medical education, No. 960185.

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Evaluation of the Efficacy of EASYDO ACTIVATOR Irrigation Technique in Intracanal Smear Layer and Debris Removal from Mature Permanent Teeth

10.21203/rs.3.rs-590367/v1 ◽

2021 ◽

Author(s):

Shao-Hui Zhang ◽

Zheng-Rong Gao ◽

Dusenge Marie Aimee ◽

Yao Feng ◽

Jing Hu ◽

...

Keyword(s):

Smear Layer ◽

Permanent Teeth ◽

Passive Ultrasonic Irrigation ◽

Root Canals ◽

Effective Removal ◽

Apical Direction ◽

Debris Removal ◽

Ultrasonic Irrigation ◽

Group 3 ◽

Group 2

Abstract EASYDO ACTIVATOR (EA) is a continuously vibrational device for root canals irrigation, but its cleaning effectiveness has not been evaluated by any published reports. We were aiming to evaluate whether EA results in a greater intracanal smear layer and debris removal than conventional needle irrigation (NI) and passive ultrasonic irrigation (PUI). Twenty-seven single-rooted teeth were used. Canals were sized to R30 and irrigated with 3% sodium hypochlorite. Species were divided into three groups: Group 1: NI; Group 2: PUI; Group 3: EA. Canal walls were subjected to scanning electron microscopy. NI- and PUI-group canal cleanliness decreased from the coronal to apical direction (P < 0.05), except for EA group in the apical third. PUI removed more smear layer from the coronal and middle thirds than EA and NI (P < 0.05). PUI and EA were superior to NI regarding debris removal (P < 0.05). The smear layer and debris from the coronal and middle thirds were effectively removed with EA and PUI. More effective removal occurred from the apical third for EA compared with PUI (P < 0.05). Both methods removed smear layer and debris better than NI, providing a theoretical basis for the clinical application of EA.

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