scholarly journals A comparison between orthodontic model analysis using conventional methods and iModelAnalysis

2018 ◽  
Vol 51 (4) ◽  
pp. 173
Author(s):  
Vita Previa Indirayana ◽  
Gita Gayatri ◽  
N. R. Yuliawati Zenab
Keyword(s):  
Sampling Method ◽  
Model Analysis ◽  
T Test ◽  
Normality Test ◽  
Time Period ◽  
Significant Difference ◽  
The Mean ◽  
Conventional Methods ◽  
Paired T Test ◽  
Dental Casts

Background: Model analysis constitutes an essential aspect of orthodontic diagnostic practice. Pavan has developed an application to simplify the mathematical calculations employed in orthodontic model analysis. Purpose: This study was conducted to obtain the differences in results and time periods of model analysis using conventional means and iModelAnalysis. Methods: The research represented a comparative analytic study. The populations comprised dental casts dating from 2014 in the Orthodontics Laboratory of Padjadjaran University. The samples comprised 31 dental casts which were subjected to a total sampling method consisting of two treatments; a conventional method calculation and one using iModelAnalysis. A normality test was conducted and processed using a paired t-test with α=0.05. Results: The means of arch length discrepancies were 1.64±2.63 mm and 1.37±3.07 mm for the conventional methods and 1.65±2.43mm and 1.42±3.04mm for iModelAnalysis. The results of a Bolton analysis for conventional methods were 78.05±2.69% and 91.93±1.29%, while those for iModelAnalysis were 77.91±2.70% and 91.96±2.13%. A Howes analysis of conventional methods produced a result of 45.56±2.83%, while for an iModelAnalysis one of 45.56±2.85%. Pont analysis for conventional methods was 39.35±0.04 mm and 49.17±2.55 mm, while for iModelAnalysis it was 39.35±0.07 mm and 49.19±2.57mm. The mean of the duration of analysis using conventional methods was 1703.81±56.46 seconds, while for iModelAnalysis it was 990.06±34.87 seconds. A normality test confirmed that the data was normally distributed (p>0.05). The results of a paired sample t-test with p>0.05 showed that there was no significant difference between the results of each analysis, while there was significant difference in the time period of analysis. Conclusion: There was no difference in the analysis results. However, there was difference in the time period of analysis between conventional methods and that of iModelAnalysis.

scholarly journals In Vitro Comparison of Marginal and Internal Fit of Zirconia Copings Fabricated by One CAD/CAM System with Two Different Scanners

2021 ◽  
Author(s):  
Zahra Khamverdi1 ◽  
Elmira Najafrad ◽  
Maryam Farhadian
Keyword(s):  
T Test ◽  
Marginal Fit ◽  
Significant Difference ◽  
Computer Aided ◽  
Cad Cam ◽  
Zirconia Crowns ◽  
Monolithic Zirconia ◽  
The Mean ◽  
Internal Fit ◽  
Paired T Test

Objectives: Marginal and internal fit of restorations are two important clinical factors for assessing the quality and durability of computer-aided design/computer-aided manufacturing (CAD/CAM)-fabricated monolithic zirconia restorations. The purpose of this study was to evaluate the marginal and internal fit of CAD/CAM zirconia crowns with two different scanners (i3D scanner and 3Shape D700). Materials and Methods: Twelve extracted sound human posterior teeth were prepared for full zirconia crowns. Two different extraoral scanners namely i3D scanner and 3Shape D700 were used to digitize type IV gypsum casts poured from impressions. The crowns were milled from presintered monolithic zirconia blocks by a 5-axis milling machine. The replica technique and MIP4 microscopic image analysis software were utilized to measure the marginal and internal fit by a stereomicroscope at ×40 magnification. The collected data were analyzed by paired t-test. Results: The mean marginal gap was 203.62 μm with 3Shape D700 scanner and 241.07 μm with i3D scanner. The mean internal gap was 192.30 μm with 3Shape D700 scanner and 196.06 μm with i3D scanner. The results of paired t-test indicated that there was a statistically significant difference between the two scanners in marginal fit (P=0.04); while, there was no statistically significant difference in internal fit (P=0.761). Conclusion: Within the limitations of this study, the results showed that type of extraoral scanner affected the marginal fit of CAD/CAM fabricated crowns; however, it did not have a significant effect on their internal fit.

scholarly journals Perbandingan Efektivitas Penyuluhan Demam Berdarah Dengue dengan Metode Role Play dan Metode Permainan Simulasi terhadap Perilaku Ibu tentang DBD di Kecamatan Medan Deli

2021 ◽  
Vol 7 (1) ◽  
pp. 8-11
Author(s):  
Novita Hasiani Simanjuntak
Keyword(s):  
Vector Control ◽  
Test Score ◽  
Role Play ◽  
Hemorrhagic Fever ◽  
T Test ◽  
Research Subjects ◽  
Significant Difference ◽  
Post Test ◽  
The Mean ◽  
Paired T Test

Background: Dengue Hemorrhagic Fever (DHF) in Indonesia is a “re-emerging infectious disease”. DHF can be prevented by vector control. Human behavior is very influential on dengue vector control, namely the cleanliness of the house and activities. In 2017, DHF cases in Indonesia were 59,047 cases. In North Sumatra Province, there were 5,327 cases, in Medan City as many as 1216 cases, with Medan Deli District as the sub-district with the most cases, with 100 cases. Objective: This study aims to see the improvement of mother's behavior by using the roleplay method and simulation games. Methods: The research is a quasi-experimental non-equivalent group design. The target population is mothers who live in Medan Deli District. The selection of research subjects by purposive sampling, with the number of subjects in each group is 15 people. This study uses the method of role play and games as a comparison method, with a questionnaire as a measuring tool. Paired t-test to see the increase in the mean of each group, and unpaired t-test to see the difference in the mean value. Results: The results of the paired t-test data analysis found that these two methods showed significant results, with p values ​​of 0.000 and 0.001 with a mean increase in the role play method of 1.40 and the game method of 1.53. The unpaired t-test was found to have a significant difference between the average post-test scores between the role play method and the game method, the mean post-test score for the role-play method was found to be lower than the post-test score for the game method. Conclusions: Counseling using the role play method and games provides significant results in increasing maternal behavior about DHF. The game method shows a greater average increase than the role play method.

scholarly journals A novel method using 3D CBCT to assess anterior malar prominence among native Bangalore population- A descriptive study

2021 ◽  
Vol 7 (3) ◽  
pp. 223-228
Author(s):  
Sanda Aamani ◽  
Hemanth M ◽  
Sharmada B K ◽  
Karthik J Kabbur ◽  
Goutham Kalladka
Keyword(s):  
Descriptive Study ◽  
T Test ◽  
Linear Measurements ◽  
Mean Values ◽  
Significant Difference ◽  
The Face ◽  
Novel Method ◽  
Males And Females ◽  
The Mean ◽  
Paired T Test

There is a lack of accurate three-dimensional studies to locate malar prominence for specified population, this study aims to locate the malar prominence using stable landmarks using CBCT. To derive a novel method to accurately locate the malar prominence and to assess and compare the malar prominence between males and females among Bangalore population using 3D CBCT study. All CBCT scans of study subjects belong to Bangalore population were collected from the pre-existing data available in Radiology imaging Solutions (CBCT centre), Bangalore during the period of September 10th to October 10th 2020. This is a descriptive study. A total of 42 subjects including 21 Males and 21 females were assessed using full skull CBCT scans which were converted to DICOM format and reconstructed into 3D images using NEMOCEPH 3D software. Landmarks used to locate the malar prominence were Fzs, Z, Zm and Ans. The intersection of these landmarks is considered to be as constructed maxillozygion(My). For the accuracy of the constructed Maxillozygion point (My), the distance between the actual Maxillozygion (Mzy) and constructed Maxillozygion (My) is measured and calculated between left and right halves of males and females. Three Orthogonal planes constructed were Midsagittal, Axial and Coronal Planes and the linear measurements with reference to all three reference planes in both the groups are measured. Student paired t- Test, Independent Student t Test, Mann Whitney Test. The mean distance from Mzy and my between right and left half of the face was compared using student paired t- Test. There is no significant difference (p=0.35).The mean values of the constructed anatomical landmark (maxillozygion) coordinated to three orthogonal planes between right and left sides of the face is compared using student paired T test and for both the genders (males and females) was compared using Independent Student t Test, and it is significantly higher in males as compared to females and it is statistically significant at (p=0.01). The location of malar prominence using CBCT by a novel method for Bangalore population is found which can be helpful in diagnosis and treatment planning for malar augmentation, camouflage treatment in subjects with midface deficiencies.

scholarly journals Optimal Time Period of Wearing Protective Collar After Anterior Cervical Discectomy and Fusion

2020 ◽  
Author(s):  
Yu Qian ◽  
Zhiwei Yu ◽  
Zhenlei Liu ◽  
Wanru Duan ◽  
Zhongjing Zhao ◽  
...  
Keyword(s):  
Cervical Spondylosis ◽  
T Test ◽  
Anterior Cervical Discectomy ◽  
Exclusion Criterion ◽  
Optimal Time ◽  
Axial Symptom ◽  
Cervical Discectomy ◽  
Time Period ◽  
Significant Difference ◽  
Paired T Test

Abstract Background: There is still no consensus on the time period of wearing collar after anterior cervical discectomy and fusion (ACDF). We aim to investigate the optimal time period of wearing protective collar.Methods: We retrospectively reviewed patients with cervical spondylosis who underwent one to two segment ACDF during January 2016 and December 2017, and included 97 patients who meet inclusion and exclusion criterion. Patients were divided into three groups according to the actual time period of wearing collar after ACDF including 1-4 week group, 5-8 week group, and 9-12 week group. We analyzed Japanese Orthopedic Association (JOA) score, Axial Symptom (AS) score and Neck Disability Index (NDI) before surgery and at post-operative 3 months to investigate the optimal time period of wearing collar.Results: JOA score: All three groups have a better post-operative JOA score compared with that before surgery (paired t test, p<0.05). There is no significant difference among the three groups with respect to post-operative JOA (ANOVA, p>0.05).AS score: The post-operative AS scores of 1-4 week group and 5-8 week group were significantly better than that before surgery (paired t test, p>0.05). While the post-operative AS score of 9-12 week group was significantly worse than preoperative AS score (paired t test, p<0.05).NDI: All three groups have a better post-operative NDI compared with that before surgery (McNemar test, p<0.05). Of note, in 5-8 week group, the percentage of no deficit increased by 45%, and the percentage of mild deficit decreased by 45% accordingly. That percentage is 26% and 31% in 1-4 week group and 9-12 week group, respectively. There was significant difference among these three groups (Fisher's exact probability test, p<0.05)Conclusions: For cervical spondylosis patients who underwent 1-2 segment ACDF, the optimal time period of wearing protective is 5-8 weeks. This time period results in comparable neurological outcome, least axial symptom risk, and highest chance of no deficit on neck function.

Comparisons of Proximal Vergence Measures

2020 ◽  
pp. 252-263
Keyword(s):  
Eye Movement ◽  
Refractive Error ◽  
Measurement Method ◽  
Clinical Utility ◽  
T Test ◽  
Significant Difference ◽  
The Mean ◽  
The Difference ◽  
Paired T Test ◽  
Vergence Eye Movement

Background: Proximal vergence is defined as a vergence eye movement subtype driven by an “awareness of nearness”. The purpose of this experiment was to compare values of proximal vergence calculated with and without measures of accommodation to assess the clinical utility of each measurement method. Methods: Thirteen participants between the ages of 22 and 37 (mean = 28.5 ± 4.5 years) were enrolled. The distance and near heterophoria were measured using the Modified Thorington technique. The near heterophoria was measured under three randomized viewing conditions (no lenses, +1.00D lenses, +2.50D lenses). Refractive error was measured with an autorefractor. Proximal vergence was calculated as the difference in calculated (far-near) and gradient (+1.00) stimulus AC/A ratios (stimulus AC/A differencing method), the difference in calculated and gradient response AC/A ratios (response AC/A differencing method), and the change in vergence from distance to near with the +2.50D lenses (uncorrected +2.50D method). This latter value was also corrected for any active accommodation with +2.50D lenses (corrected +2.50D method). Results: The mean proximal vergence values (Δ) were 7.82 ± 5.98 (stimulus AC/A differencing method), 8.29 ± 3.30 (response AC/A differencing method), 6.23 ± 3.52 (uncorrected +2.50D method), and 5.13 ± 2.98 (corrected +2.50D method). The only comparison that showed both a significant correlation (p<0.05) and a non-significant difference from the paired t-test (p>0.05) was that between the stimulus AC/A differencing method and the uncorrected +2.50D method. Conclusions: When response accommodation was accounted for, differences occurred in the mean proximal values obtained with the various methods. The means of the methods most likely to be used clinically (stimulus AC/A differencing method and uncorrected +2.50D method) were similar, although some individuals demonstrated significant differences between these methods.

scholarly journals Optimal Time Period of Wearing Protective Collar after Anterior Cervical Discectomy and Fusion

2021 ◽  
Vol 8 (6) ◽  
Author(s):  
Qian Y ◽  
◽  
Yu Z ◽  
Liu Z ◽  
Duan W ◽  
...  
Keyword(s):  
Cervical Spondylosis ◽  
Neck Disability Index ◽  
T Test ◽  
Anterior Cervical Discectomy ◽  
Optimal Time ◽  
Cervical Discectomy ◽  
Time Period ◽  
Neck Function ◽  
Significant Difference ◽  
Paired T Test

Objective: There is still no consensus on the time period of wearing protective collar after Anterior Cervical Discectomy and Fusion (ACDF). We aim to investigate the optimal time period of wearing collar after ACDF. Methods: We retrospectively reviewed patients with cervical spondylosis who underwent one or two segment ACDF during January 2016 and December 2017, and included 97 patients who met inclusion and exclusion criteria. Patients were divided into three groups, 1-4 week group, 5-8 week group and 9-12 week group, according to the actual time period of wearing collar after ACDF. We analyzed Japanese Orthopedic Association (JOA) score, Axial Symptom (AS) score and Neck Disability Index (NDI) before surgery and at post-operative 3 months to investigate the optimal time period of wearing collar after ACDF procedure. Results: 1) JOA score: All three groups have a better post-operative JOA score compared with that before surgery (paired t test, p<0.05). There is no significant difference among the three groups with respect to post-operative JOA (ANOVA, p>0.05). 2) AS score: The post-operative AS scores of 1-4 week group and 5-8 week group were significantly better than that before surgery (paired t test, p>0.05). While the post-operative AS score of 9-12 week group was significantly worse than preoperative AS score (paired t test, p<0.05). 3) NDI: All three groups have a better post-operative NDI compared with that before surgery (McNemar test, p<0.05). Of note, in 5-8 weeks group, the percentage of no deficit increased by 45%, and the percentage of mild deficit decreased by 45% accordingly. That percentage is 26% and 31% in 1-4 week group and 9-12 week group, respectively. There was significant difference among these three groups (Fisher’s exact probability test, p<0.05). Conclusion: For cervical spondylosis patients who underwent 1 or 2 segment ACDF, the optimal time period of wearing protective is 5-8 weeks. This time period results in comparable neurological outcome, least risk of axial symptoms, and highest chance of no deficit with neck function.

scholarly journals COMBINATION OF HYPNOSIS THERAPY AND RANGE OF MOTION EXERCISE ON UPPER-EXTREMITY MUSCLE STRENGTH IN PATIENTS WITH NON-HEMORRAGHIC STROKE

2018 ◽  
Vol 4 (1) ◽  
pp. 104-111
Author(s):  
Chandra Irawan ◽  
Mardiyono Mardiyono ◽  
Suharto Suharto ◽  
Aris Santjaka
Keyword(s):  
Muscle Strength ◽  
Upper Extremity ◽  
Mean Value ◽  
T Test ◽  
Control Group ◽  
P Value ◽  
Significant Difference ◽  
The Mean ◽  
And Control ◽  
Paired T Test

Background: Range of Motion (ROM) exercise has been identified in the literature that it has an effect in improving muscle strength, especially in patients with stroke. However, little is known about the effect of ROM exercise combined with hypnosis therapy.Objective: To determine the effect of combination of hypnosis therapy and ROM exercise on upper extremity muscle strength in patients with non-hemorrhagic.Methods: This study employed a quasy experiment with pretest-posttest control group design. Thirty-two samples were selected using simple random sampling, which 16 randomly assigned in the experiment and control group. Muscle strength was measured using Muscle Strength Scale. Hypnosis Deepening test was used to measure the level of hypnosis depth. Paired t-test and Independent t-test were used for data analysis.Results: The mean value of muscle strength in the experiment group was 3.50 and  the mean value in the control group  was 2.62. Independent sample t-test obtained p-value = 0.012, indicated that there was a statistically significant difference in the mean of muscle strength of upper extremity in the experiment and control group. Paired t-test obtained p-value = 0.000, which indicated that there was significant difference between the average of muscle strength value before and after treatmentConclusion: The combination of hypnosis therapy and ROM exercise has a significant effect in increasing muscle strength of upper extremity in patients with stroke non-haemorrhagic.

scholarly journals PENGARUH LATIHAN FISIK AEROBIK TERHADAP KOLESTEROL HIGH DENSITY LIPOPROTEIN (HDL) PRIA DENGAN BERAT BADAN LEBIH (OVERWEIGHT)

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Gloria Hengkengbala ◽  
H. Polii ◽  
H. I. S. Wungouw
Keyword(s):  
Physical Exercise ◽  
High Density Lipoprotein ◽  
Aerobic Exercise ◽  
Density Lipoprotein ◽  
Male Student ◽  
T Test ◽  
High Density ◽  
Significant Difference ◽  
The Mean ◽  
Paired T Test

Abstract: Several studies have suggested that aerobic exercise can affect the metabolism of cholesterol in the blood, one of which cholesterol High Density Lipoprotein (HDL), otherwise known as “good cholesterol”, but it has not been mentioned in detail what kind of exercise and how much exercise intensity long and also how many levels of HDL can be improved with practice. Aerobic physical exercise using a stasionary bicycle made for one’s physicalfitness test. This study aimed to determine the effect of aerobic exercise on HDL overweight male student of the Unsrat Medical Faculty. This research is analytic experimental design field with one group pre-post test. The study subject were 28 students medical Unsrat 2009 (18-25 years) with IMT > 23 who fulfil the inclusion criteria. Subjects were given aerobic physical exercise in the fitness center Manado for 3 weeks with a frequency of three times a week, with duration of 30 minutes of exercise, then it is conducted normality test of data distribution, and data analysis followed by paired t test for normally distributed data obtained. The result showed an increase in the mean  levels of HDL subjects 44.85±7.98 mg/dL to 46.89±8.96 mg/dL (p=0.104) but trough paired t test, Ido not get meaningful results after doing aerobic exercise (p>0.005). Aerobic Phycical Exercise on a regular basis using a stationary bike on the overweight men student can increase the mean HDL cholesterol levels but no significant difference from the mean value.Keywords: Aerobic Physical Exercise, HDL, Overweight.  Abstrak: Beberapa penelitian telah menyebutkan bahwa latihan fisik aerobik dapat mempengaruhi metabolisme kolesterol dalam darah salah satunya kolesterol HDL (High Density Lipoprotein) atau dikenal sebagai “kolesterol baik”, namun belum disebutkan secara terperinci jenis latihan fisik seperti apa dan dengan intensitas latihan berapa lama dan juga berapa banyak kadar HDL yang dapat ditingkatkan dengan latihan. Latihan fisik aerobik dengan menggunakan sepeda statis yang dilakukan untuk tes kebugaran fisik seseorang. Penelitian ini bertujuan untuk mengetahui pengaruh latihan fisik aerobic terhadap kadar HDL mahasiswa pria Fakultas Kedokteran Unsrat dengan berat badan lebih.  Jenis penelitian ini bersifat eksperimental lapangan dengan rancangan pre-post one group test. Subjek  penelitian sebanyak 28 mahasiswa Kedokteran UNSRAT Angkatan 2009  (18-25 tahun) dengan IMT ≥ 23 yang memenuhi kriteria inklusi. Subyek  diberikan latihan fisik aerobic di pusat Kebugaran Manado selama 3 minggu dengan frekuensi 3 kali seminggu, dengan lamanya latihan 30 menit, selanjutnya dilakukan uji normalitas distribusi data, kemudian dilanjutkan analisis data dengan uji t berpasangan karena data yang didapat berdistribusi normal. Hasil penelitian didapatkan terjadi peningkatan nilai rerata kadar HDL subyek  44,85 ± 7.98 mg/dL menjadi 46.89 ±8.96 mg/dL (p= 0.104) namun  melalui uji t berpasangan mendapatkan hasil yang tidak bermakna sesudah melakukan latihan fisik aerobik (p >0.005). Simpulan: Latihan fisik aerobik menggunakan sepeda statis secara teratur pada mahasiswa pria dengan berat badan lebih dapat meningkatkan nilai rerata kadar HDL tetapi tidak terdapat perbedaan yang bermakna dari nilai rerata tersebut.Kata Kunci: latihan Fisik Aerobik, HDL, overweight.

scholarly journals Efektivitas Makanan Berbasis Lokal Tawas Ut (Ampelocissus Rubuginosa L) Terhadap Status Kesehatan Ibu Post-Partum Di Kota Palangka Raya

2020 ◽  
Vol 6 (1) ◽  
pp. 143-156
Author(s):  
Christine Aden ◽  
Marselinus Heriteluna
Keyword(s):  
Health Status ◽  
Post Partum ◽  
Food Product ◽  
Reproductive Organs ◽  
T Test ◽  
P Value ◽  
Significant Difference ◽  
The Mean ◽  
Postpartum Mothers ◽  
Paired T Test

Postpartum recovery of the reproductive organs, especially the uterus, should occur immediately. The uterus should return to its pre-pregnancy size. Treatment to restore maternal health during the postpartum period was carried out by the Dayak community by using the herbal concoction of Tawas Ut (Ampelocissus Rubuginosa L). This study aims to determine the health status of post-partum mothers by administering the Tawas Ut herb as a food product. paired t-test). It was found that there was a significant difference in the mean fundal height between the intervention and control groups (p-value 0.012) with a difference of 2.91, or there was a difference of 61.1%. The results of the Paired t-test showed that there was a significant difference in the mean uterine fundal height between before and after the intervention period (p-value 0.0005) with a difference in uterine fundal height of 10.45 cm or a change of 84%. This shows that the local-based food of Tawas Ut has effects on the health status of postpartum mothers, which can reduce leukocytes by 32% and reduce uterine fundal height by 84% to normal sizes as before pregnancy. The use of this product is recommended to be used as a companion to standard service programs for postpartum mothers to support government programs to reduce maternal morbidity and mortality due to postpartum problems.

scholarly journals Salivary pH before and after cranberry juice consumption

2020 ◽  
Vol 32 (3) ◽  
pp. 233
Author(s):  
Dwiana Lisany Marunduri ◽  
Rosiliwati Wihardja ◽  
Winny Yohana
Keyword(s):  
Statistical Analysis ◽  
Systemic Disease ◽  
T Test ◽  
P Value ◽  
Cranberry Juice ◽  
Normality Test ◽  
Significant Difference ◽  
Salivary Ph ◽  
Before And After ◽  
Paired T Test

Introduction: Cranberry (Vaccinium macrocarpon) is commonly consumed as a source of antioxidants. The cranberry juice has a sour and a little bit of bitter taste that can affect the salivary pH. The sour taste is a result of its high content of proanthocyanidin. Cranberry juice plays a role in maintaining oral and dental health. Cranberries’ flavonol and proanthocyanidin content play a role in preventing dental caries by preventing the growth of Streptococcus mutans. This study was aimed to compare the salivary pH before and after cranberry juice consumption. Methods: This research was quasi-experimental. The research population was the students from the Faculty of Dentistry Universitas Padjadjaran, and the sampling method was purposive sampling. Thirty-five male and female students with no history of systemic disease and drug administration, no orthodontics appliance and denture, were involved in this experiment. Students with lesions on oral mucosa were also excluded from this study. The pH measurement was performed with a digital pH meter to record the salivary pH ratio before and after consumption of cranberry juice. Before salivary pH comparison analysis was performed, the normality test was conducted, then the analysis was continued using the paired t-test. Statistical analysis was determined at α=0.05. Results: The average values of salivary pH ratio before and after consumption of cranberry juice were 6.714 and 7.246, respectively. The normality test showed that the p-value before and after consumption of cranberry juice were 0.143 and 0.285, respectively (p-value>0.05), which categorised in the normal distribution. The paired t-test statistical analysis showed the p-value of 0.001 (p-value<0.05), which considered as significant. This result indicated that there was a significant difference in the salivary pH before and after consumption of cranberry juice. Conclusion: The salivary pH is increasing after cranberry juice consumption.

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