scholarly journals PENGARUH LAMA APLIKASI DAN WAKTU PERENDAMAN GIGI DENGAN JUS BUAH PIR TERHADAP PERUBAHAN WARNA DAN KEKERASAN MIKRO

2016 ◽  
Vol 3 (2) ◽  
pp. 111
Author(s):  
Dewi Ratma Utami ◽  
Andina Rizkia Putri Kusuma ◽  
Welly Anggarani
Keyword(s):  
Hydrogen Peroxide ◽  
Micro Hardness ◽  
Tooth Color ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Post Test ◽  
Alternative Material ◽  
Group A ◽  
Pear Juice ◽  
The Difference

Background: Teeth discoloration is considered disturbing performance,therefore bleaching become an option for teeth whitening. Hydrogen Peroxide (H2O2) is commonly used, it is beneficial for teeth whitening but in other hand it has adverse effectin lowering micro hardness of the tooth. Hydrogen Peroxide can be found in pears. The objectives of this research were to determine the influences of application duration and immersion time of tooth when immersed in pear juice toward its discoloration and micro hardness.Method: An experimental study with pre-post test controlled group design were conducted using 28 premolars teeth which divided into four groups. Group A and Bwere immersed in pear juice with concentration of 100% for 30 and 60 minutes/day. Group C and D were immersed in H2O2 3% for 30 and 60 minutes/day each for 14 days. Tooth color and micro hardness of each tooth sample were recorded before and on 7thand 14thdays after immersion. The data was analyzed by friedman test, repeated anova, one-way anova and post hoc.Result: The average of tooth color index based on the duration of application in all four groups showed significant changes, while the average change in micro hardness index based on the duration of applications were shown significant difference only in group C and D. The difference of time immersion in pear juice 100% for 30 and 60 minutes had no effect on tooth discoloration and micro hardness.Conclusion: It can be concluded that pear juice can be used as an alternative material for bleaching process without deteriorating it’s micro hardness.

scholarly journals Impact of Bleaching before or after Veneer Preparation on Color Masking Ability of Laminate Veneers: An In Vitro Study

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Gollshang Ahmad Mhammed Dalloo ◽  
Bestoon Mohammed Faraj ◽  
Abdulsalam Rasheed Al-Zahawi
Keyword(s):  
Hydrogen Peroxide ◽  
Color Change ◽  
In Vitro Study ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Color System ◽  
The Difference ◽  
Laminate Veneers ◽  
Cielab Color

Purpose. This study evaluates the effect of bleaching before or after veneer preparation and the depth of preparation on color masking ability of laminate veneers. Methods. Sixty extracted premolars were artificially stained to vita shade A4, verified by digital spectrophotometer (Vita Easy Shade V), and then divided into three groups: NB = nonbleached , BBP = bleaching before preparation, and BAP = bleaching after preparation. Based on the preparation depths, each group was further divided into two subgroups: S 1 = 0.5   mm and S 2 = 1.0   mm . BBP and BAP were subjected to one session of in-office bleaching using 35% hydrogen peroxide. IPS e-max CAD veneers of 0.5 and 1.0 mm thickness (corresponding to the preparation depths) of the same shade and translucency (HT A1) were cemented immediately to the bleached surfaces. Immediately after cementation, the color change Δ E between the baseline (after staining) and the resulted shades was measured using the Vita Easy Shade V digital spectrophotometer and CIELab color system. Results. Bleached groups exhibited a significant Δ E value compared to the nonbleached group ( p < 0.05 ). BAP showed the highest Δ E value. No significant difference was found between BBP and BAP. S2 revealed a significant Δ E value than S1 ( p < 0.05 ). No significant difference was found between S1of BAP and S2 of NB, BBP, and BAP ( p > 0.05 ). Regarding the color coordinates, the difference between the tested groups was highly significant in lightness ( Δ L ∗ ) ( p < 0.001 ), while no significant differences were found in green/red value ( Δ a ∗ ) and yellow/blue value ( Δ b ∗ ) ( p > 0.05 ). Conclusions. In cases of severe tooth discoloration, one session of in-office bleaching before or after veneer preparation and the preparation depth do not influence the color masking ability of laminate veneers.

scholarly journals Effect of exposure frequencies of pear juice on tooth whitening

2013 ◽  
Vol 25 (1) ◽  
Author(s):  
Gobalakrishna Munusamy ◽  
Endang Sukartini ◽  
Ayu Trisna Hayati
Keyword(s):  
Hydrogen Peroxide ◽  
Research Result ◽  
Control Group ◽  
Tooth Whitening ◽  
Whitening Effect ◽  
Significant Difference ◽  
Pear Juice ◽  
The Difference ◽  
Tooth Colour

Introduction: Tooth whitening (Bleaching) is a method to restore discoloured teeth to the original tooth colour with a chemical process. The materials used in the bleaching process are hydrogen peroxide, sodium perborates and carbamide peroxide. Pear fruit consists of hydrogen peroxide which is potentially an oxidizing compound that produces free radicals that react with unsaturated bonding teeth staining substances. This study aims to analyzed tooth whitening effect of exposure of pear juice with different frequencies. Methods: The type of research was true in vitro experiment where samples of 32 maxillary premolar teeth had cut the root to CEJ. The specimens divided into four groups. The first group was soaked in pear juice two times, the second group three times, a third group four times, and the fourth was the control group using only mineral water. Tooth colour was measure using a Spectrophometer, conducted before and after individual soaking. Results: The research result is tested with ANOVA and Newman- Keuls Range Test showed a significant difference of tooth whitening degree between the frequency exposure pear juice after 2 times soaking, 3 times soaking and 4 times soaking. Conclusion: There are difference degree of whitening from the difference frequency exposure of pear juice and Pear juice exposure of 4 times gives higher whitening effect compared to frequency of 3 times, 2 times and control group which is soaked in water.

scholarly journals The effects of robusta coffee on tooth discolouration

2012 ◽  
Vol 24 (3) ◽  
Author(s):  
Chu Chin Sin ◽  
Ayu Trisna Hayati ◽  
Endang Sukartini
Keyword(s):  
Tooth Surface ◽  
P Value ◽  
Tooth Color ◽  
Color Changes ◽  
Robusta Coffee ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
The Difference ◽  
High Level

Introduction: One of the most frequent dental problems that confronted dentist is tooth discoloration which can cause significant cosmetic problems. Extrinsic tooth discoloration occurs when stain forms on the tooth surface or in the pellicle and the common causes of extrinsic tooth discoloration is coffee. Robusta coffee contains high level of chromogenic compound which can incorporate itself into the acquired pellicle and tannic acids that can denature the pellicle protein and increase its stain ability. The purpose of this experiment was to investigate the tooth discoloring effect of Robusta coffee solution. Methods: This research type was a true experiment (in vitro) using 30 samples of maxillary first premolar whose roots had been cut until the CEJ. Samples were divided into 2 groups (which are soaked in Robusta coffee solution and the other in mineral water) of 15, with a frequency of three times daily for seven days. The difference in tooth color changes was measured by using a spectrophotometer. Results: This research was analyzed by using t-test and there was a significant difference between the two groups (p-value≤0.00). Conclusion: Robusta coffee effected to tooth discoloration.

Does body position, age, and heart rate induce IOP’s changes?

2021 ◽  
pp. 112067212110233
Author(s):  
Marcelina Sobczak ◽  
Magdalena Asejczyk ◽  
Malwina Geniusz
Keyword(s):  
Heart Rate ◽  
Body Position ◽  
Age Groups ◽  
Cardiovascular Parameters ◽  
Entire Cohort ◽  
Significant Difference ◽  
Group A ◽  
The Difference ◽  
Group B ◽  
Effect Of Age

Objectives: The main goal of this research was to determine the differences between the values of intraocular pressure (IOP) in the supine and sitting positions, and to assess the effect of age and cardiovascular parameters. Methods: Seventy-two healthy adults were enrolled and classified into age groups: 20–30 years (group A), 31–40 years (group B), and 41–71 years (group C). Corneal biometry and cardiovascular parameters, such as heart rate (HR), were measured. IOP measurements were taken in the sitting position (IOPS) and in the supine position (IOPL) using the iCare® Pro tonometer. Results: A significant difference between the IOPS and IOPL in the entire cohort was found ( p < 0.001). Regarding the age subgroups, a significant difference ( p < 0.001) between the IOPS and IOPL was obtained in group A (2.6 ± 1.6 mmHg) and group C (1.5 ± 1.3 mmHg). There were no significant differences in the IOPS between groups. The highest IOP values were obtained for group A. The correlations between HR and IOPS are statistically significant for group A and group B, and for HR and IOPL-S for group B only. Multivariate analysis showed that HR has a significant influence on the difference in IOP in the two body positions. Conclusion: A statistically significant difference between the effect of age and the values of IOPS and IOPL was shown. Cardiovascular parameters showed some relevant statistical dependencies, but with a rather marginal significance in young people. The influence of body position for the measurement of IOP for healthy subjects does not seem to matter, despite the fact that there are some dependencies that are statistically significant.

EFFECT OF YOGA ON CARDIOVASCULAR EFFICIENCY

2019 ◽  
pp. 12-16
Author(s):  
Brij Bhushan Singh ◽  
Shubi Mirja ◽  
Samiya Husain
Keyword(s):  
Statistical Technique ◽  
Step Test ◽  
Control Group ◽  
Significant Difference ◽  
Post Test ◽  
Group A ◽  
Cardio Vascular ◽  
Level Of Significance ◽  
Group B ◽  
Experimental Group

The purpose of this study was to investigate the effects of yogic practices on cardio-vascular efficiency. Material and methods: Total Forty (40) subject’s boys/girls were selected as the sample of the study through the random sampling and their age ranged between 20 to 25 years from the Department of Physical Education, Aligarh Muslim University, Aligarh. The subjects were divided into two groups comprising 20 subjects in each group, namely group “A” (the experimental group) performs yogic practices (Asanas, Pranayamas and Kriyas) and group “B” (the control group) served as control. Statistical technique: for the assessment of the cardiovascular efficiency through Harvard step test pre and post-test was conducted and t-test was applied for the analysis. Result: revealed that there exist a significant difference between group A and group B, at .05 level of significance. On the basis of the pre and post-test among experimental and control group, experimental group found better than the control group on cardiovascular efficiency and significant result were found in this study.

scholarly journals The Effectiveness of the Use of Animation in Arabic Language Learning

2017 ◽  
Vol 13 (10) ◽  
pp. 124 ◽  
Author(s):  
Norhayati Che Hat ◽  
Mohd Fauzi Abdul Hamid ◽  
Shaferul Hafes Sha'ari ◽  
Safawati Basirah Zaid
Keyword(s):  
Student Achievement ◽  
Language Learning ◽  
Language Teaching ◽  
Arabic Language ◽  
Control Group ◽  
Teaching Aid ◽  
Significant Difference ◽  
Post Test ◽  
The Difference ◽  
Experimental Group

Implementation of animation as an Arabic language teaching aid is an innovation in creating an atmosphere that can influence student achievement. This study aimed to identify the effectiveness of the use of animation in Arabic language teaching and learning among diploma students at Universiti Sultan Zainal Abidin (UniSZA), Terengganu, Malaysia. A total of 66 diploma students were randomly selected and divided into experimental group (n = 33) and control group (n = 33). The results obtained from the data collected from pre-and post-test for each group were analyzed using t-test in SPSS version 17.0. The results showed a significant difference of (t = 8789, df = 64, p <0.05) between the achievement of the experimental group and the control group in the post test. The difference in mean score of the experimental group and the control group was 33.03. This shows that there is significant improvement in Arabic language according to the groups. The difference prove that the use of animation in learning sessions contribute to the achievement of students in the Arabic language. This study advocate the idea that animation applications can be integrated as part of language teaching aid to positively improve student achievement, classroom learning environment and student motivation. 

scholarly journals THE EFFECT OF BLINDFOLD GAME ON STUDENTS’ VOCABULARY ACHIEVEMENT AT SMP NEGERI 13 KENDARI

2020 ◽  
Vol 5 (3) ◽  
pp. 200
Author(s):  
Andi An-Nisaa Arfin ◽  
Kamaluddin Kamaluddin ◽  
Wa Ode Fatmawati
Keyword(s):  
Junior High School ◽  
Alternative Hypothesis ◽  
First Grade ◽  
First Year ◽  
First Year Students ◽  
Comparison Research ◽  
Significant Difference ◽  
Post Test ◽  
The Difference ◽  
Vocabulary Achievement

The purpose of conducting this research is to examine the difference NGain scores between students who learn vocabulary with Blindfold Game and students who learn vocabulary without Blindfold Game at the first year students of SMP Negeri 13 Kendari. The samples of this research are the first grade four (VII-4) and the first grade three (VII-3) which consists of 27 students for each class. This research is conducted in comparison research design that consists of experimental class (VII-4) and controll class (VII-3). The data of this research are collected by giving pre-test and post-test in two classes (VII-4 & VII-3). The result shows that there is an improvement of the students’ vocabulary achievement. Independent samples t-test shows that, there is a significant difference in the Ngain scores for experimental class ( M = 60.08,  SD = 9.36 ) and controll class ( M = 20.41, SD = 14.56 ), t (52) = 11.904, p (0.000) < 0.05. Therefore, it can be concluded that the value of Sig (2 tailed) is lower than the significance α value (0.000 < 0.05). In other words, alternative hypothesis (H1) is accepted and the null hypothesis (H0) is rejected. It means that the Blindfold game can enrich students’ vocabulary achievement for Junior High School Student.

scholarly journals Efektivitas Exercise Intradialisis Menggunakan Barbell dan Range of Motion (ROM) terhadap Adekuasi Hemodialisa pada Pasien Penyakit Ginjal Kronik

2019 ◽  
Vol 2 (2) ◽  
pp. 189-200
Author(s):  
Yestiani Norita Joni ◽  
Busjra M Nur ◽  
Fitrian Rayasari
Keyword(s):  
Chronic Kidney Disease ◽  
Standard Deviation ◽  
Range Of Motion ◽  
Intervention Group ◽  
Control Design ◽  
P Value ◽  
Significant Difference ◽  
Post Test ◽  
The Difference ◽  
Keywords Hemodialysis

The purpose of this study is to know the effectiveness of intradialysis exercise using barbells and Range of Motion (ROM) on the adequacy of hemodialysis in patients with chronic kidney disease in the hemodialysis room of RSIJ Sukapura in 2018. The design of this study uses a design with non-probability pre and post test two groups without control design . The result of the difference in the effectiveness of the adequacy values between the two intervention groups after the intervention was given was the barbell intervention obtained 1,33 with a standard deviation of 0.485, an error standard of 0.114. Whereas in the ROM intervention group 1.67 the standard deviation was 0.485, the standard error was 0.114 and the p-value was 0.047 (> 0.05). Conclusion, there was no significant difference in the value of hemodialysis adequacy between the barbellROM intervention groups after the intervention.   Keywords: Hemodialysis Adequacy, Barbell, Exercise Effectiveness, Intradialysis, Range Of Motion (ROM)

scholarly journals Radiographic Outcomes in Treatment of Thumb Basal Joint Arthritis: Does Interposition of Acellular Dermal Allograft Prevent Metacarpal Settling?

2019 ◽  
Vol 12 (03) ◽  
pp. 177-182
Author(s):  
Sonya Khurana ◽  
Kevin K. Chen ◽  
Jeffrey J. Brooks
Keyword(s):  
Demographic Data ◽  
Joint Space ◽  
Dermal Matrix ◽  
Radiographic Outcomes ◽  
Significant Difference ◽  
Basal Joint ◽  
Group A ◽  
The Difference ◽  
Joint Arthritis ◽  
Acellular Dermal

Abstract Background Osteoarthritis at the thumb carpometacarpal joint can have a profound impact on quality of life. Here, we evaluate radiographic outcomes in patients who have had open complete trapeziectomy, ligament reconstruction with tendon interposition, and acellular dermal matrix (GraftJacket) interposition—Group A, and compare them with those without GraftJacket interposition—Group B. Materials and Methods Thirty patients who had undergone operative treatment for thumb basal joint arthritis by a single surgeon from 2009 to 2016 were identified, and charts were retrospectively reviewed for demographic data, surgical and radiographic outcomes, and complications. Results There was no significant difference in pre- and postoperative radial abduction or pre- and postoperative palmar abduction. The difference in intraoperative joint space was significant (p = 0.006), but the difference in postoperative joint space was not (p = 0.310). The average amount of metacarpal settling was 6.9 versus 3.7 mm (p = 0.035) (Groups A and B, respectively). Three patients in Group A developed an inflammatory reaction to the GraftJacket, and one required reoperation for allograft removal. Conclusion This study suggests that thumb basal joint arthroplasty with GraftJacket interposition does not lead to more favorable radiographic outcomes at long-term follow-up. The increased costs associated with GraftJacket use may not be justified in light of these outcomes.

A Sham-Controlled Trial of Acupuncture as An Adjunct in Migraine Prophylaxis

2014 ◽  
Vol 32 (1) ◽  
pp. 12-16 ◽  
Author(s):  
Mohsen Foroughipour ◽  
Amir Reza Golchian ◽  
Mohsen Kalhor ◽  
Saeed Akhlaghi ◽  
Mohammad Taghi Farzadfard ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Sham Acupuncture ◽  
Migraine Prophylaxis ◽  
Acupuncture Group ◽  
Migraine Headaches ◽  
Prophylactic Drugs ◽  
Significant Difference ◽  
Group A ◽  
The Difference ◽  
Sham Acupuncture Group

Background Migraine is one of the most common types of headache, with significant socioeconomic effects. Prophylactic drugs are used to prevent migraine headaches but are unpromising. Objective To assess the effects of adding acupuncture to conventional migraine prophylaxis. Methods One hundred patients with migraine (41 male, 59 female), in whom prophylactic drugs had not produced a fall of at least 50% in the number of attacks, entered the study. The patients were randomised into two groups, sham and true acupuncture. The patients in both groups continued their prophylactic treatment and received 12 sessions of either true or sham acupuncture. Each session was 30 min and was repeated three times a week. The number of headaches in the two groups was compared at baseline, and at the end of four successive months. Results There was no significant difference in the frequency of attacks between the two groups before intervention. After 1 month, the frequency of attacks each month decreased from 5.1 (0.8) to 3.4 (1.2) in the true acupuncture group, and from 5.0 (0.8) to 4.4 (1.1) in the sham acupuncture group (a significant difference, p<0.001). The frequency continued to decrease in month 2 but increased in months 3 and 4; however, it was still significantly lower than baseline, and the difference remained significant after month 4. Conclusions Acupuncture is applicable as an adjunct to prophylactic drugs in migraineurs in whom the number of attacks does not fall with prophylactic medication.

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