scholarly journals Novel Digital Technique to Analyze the Influence of the Operator Experience on the Accuracy of the Orthodontic Micro-Screws Placement

2021 ◽  
Vol 11 (1) ◽  
pp. 400
Author(s):  
María Bufalá Pérez ◽  
Miriam O’Connor Esteban ◽  
Álvaro Zubizarreta-Macho ◽  
Elena Riad Deglow ◽  
Sofía Hernández Montero ◽  
...  
Keyword(s):  
Intraoperative Complications ◽  
Study Groups ◽  
T Test ◽  
Entry Point ◽  
Study Group ◽  
Years Of Experience ◽  
Digital Technique ◽  
Operator Experience ◽  
Before And After ◽  
Paired T Test

To analyze the influence of the operator experience on the accuracy of orthodontic self-tapping micro-screws placement, a total of 60 orthodontic self-tapping micro-screws were randomly distributed into two study groups: Group A. Orthodontic micro-screws placement by an orthodontist with 10 years of experience (n = 30); and B. Orthodontic micro-screws placement by an orthodontist student without experience (n = 30). Cone-beam computed tomography scans and intraoral scans were performed before and after the orthodontic self-tapping micro-screws placement and uploaded in 3D implant-planning software to analyze the deviation angle and the horizontal deviation measured at the coronal entry point and apical endpoint between orthodontic micro-screws planned and performed. In addition, intraoperative complications such as root perforations after orthodontic self-tapping micro-screws placement and fracture of the orthodontic self-tapping micro-screws during their placement were also analyzed. The paired t-test revealed statistically significant differences at the apical endpoint (p = 0.004) of planned and performed orthodontic self-tapping micro-screws between the orthodontist with 10 years of experience and the orthodontist student without experience. However, the paired t-test revealed no statistically significant differences at the coronal entry point (p = 0.220) and angular deviations (p = 0.602) of planned and performed orthodontic self-tapping micro-screws between the orthodontist with 10 years of experience and the orthodontic student without experience. Furthermore, five root perforations were observed in the no experience study group and three orthodontic self-tapping micro-screws were fractured in each study group. In conclusion, the results show that the greater experience of the operator influences the accuracy of orthodontic micro-screws placement, resulting in less intraoperative complications.

scholarly journals Influence of the Digital Mock-Up and Experience on the Ability to Determine the Prosthetically Correct Dental Implant Position during Digital Planning: An In Vitro Study

2019 ◽  
Vol 9 (1) ◽  
pp. 48
Author(s):  
Miriam O’Connor Esteban ◽  
Elena Riad Deglow ◽  
Álvaro Zubizarreta-Macho ◽  
Sofía Hernández Montero
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
In Vitro Study ◽  
Study Groups ◽  
T Test ◽  
Dental Surgery ◽  
Operator Experience ◽  
Planning Software ◽  
Before And After

The purpose of this study was to analyze the influence of the digital mock-up and operator experience on the dental implant planning position. A total of 200 dental implants were planned, which were distributed into two study groups: A. dental implant planning by dental surgeons with 5–10 years of experience (n = 80); and B. dental implant planning by dental surgery students without experience (n = 120). Operators were required to plan eight dental implants in the same maxillary edentulous case uploaded in 3D implant-planning software, before and after using the digital mock-up. Deviations between the dental implant planning positions before and after using the digital mock-up were analyzed at platform, apical and angular levels, and were analyzed using a 3D implant-planning software using Student’s t test. The paired t-test revealed statistically significant differences between the deviation levels of participants with 5–10 years’ experience and no experience at the platform, apical and angular levels. Digital mock-ups allow for more accurate dental implant planning regardless of the experience of the operator. Nevertheless, they are more useful for operators without dental surgery experience.

scholarly journals Influence of the Computer-Aided Static Navigation Technique on the Accuracy of the Orthodontic Micro-Screws Placement: An In Vitro Study

2021 ◽  
Vol 10 (18) ◽  
pp. 4127
Author(s):  
Paulina Rodríguez Torres ◽  
Sergio Toledano Gil ◽  
Álvaro Zubizarreta-Macho ◽  
María Bufalá Pérez ◽  
Elena Riad Deglow ◽  
...  
Keyword(s):  
Intraoperative Complications ◽  
In Vitro Study ◽  
Study Groups ◽  
Entry Point ◽  
Screw Placement ◽  
Study Group ◽  
Freehand Technique ◽  
Computer Aided ◽  
Group A

To analyze the influence of the computer-aided static navigation technique on the accuracy of placement of orthodontic micro-screws. One hundred and thirty-eight orthodontic micro-screws were randomly assigned to the following study groups: Group A. orthodontic micro-screw placement using a computer-aided static navigation technique (n = 69); B. orthodontic micro-screw placement using the conventional freehand technique (n = 69). In addition, the accuracy in the canine–premolar, premolar and molar sectors was analyzed in each study group. Cone-beam computed tomography and intraoral scans were taken both prior and subsequent to orthodontic micro-screw placement. The images were then uploaded using a 3D implant planning software, where the deviation and horizontal angles were analyzed using a multivariate linear model. These measurements were taken at the coronal entry point and apical endpoint between the planned orthodontic micro-screws. In addition, any complications resulting from micro-screw placement, such as spot perforations, were also analyzed in all dental sectors. The statistical analysis showed significant differences between the two study groups with regard to the coronal entry-point, apical end-point (p < 0.001) and angular deviations (p < 0.001) between the computer-aided static navigation technique and freehand technique study groups. Moreover, statistically significant differences were showed between the different dental sectors (p < 0.001). Additionally, twelve root perforations were observed at the conventional free hand technique study group while there were no root perforations in the computer-aided static navigation technique study group. The results showed that the computer-aided static navigation technique enables a more accurate orthodontic micro-screw placement with less intraoperative complications when compared with the conventional freehand technique.

Estimating the pH of Commercially Available Dentifrices and Evaluating its Effect on Salivary pH After Brushing

2013 ◽  
Vol 7 (1) ◽  
pp. 12-16 ◽  
Author(s):  
P Gulati ◽  
S Dhingra ◽  
S Chand ◽  
Swatika LNU
Keyword(s):  
Study Groups ◽  
T Test ◽  
Significant Difference ◽  
Active Salt ◽  
Different Types ◽  
Salivary Ph ◽  
Before And After ◽  
The Mean ◽  
One Way Anova ◽  
Paired T Test

ABSTRACT Objectives The purpose of the study was to estimate the pH of commercially available dentifrices and evaluating its effect on salivary pH after brushing Material and Methods 60 study subjects were selected and were divided into 12 groups (each group comprises of 5 subjects). The salivary pH was directly estimated using the digital pH meter calibrated using buffers of pH 4, 7 and 22. Paired t test was used to compare the changes in the mean salivary pH after brushing in each group. One way ANOVA and Tukey's test was used to compare the changes in mean salivary pH after brushing between different groups. Results pH of different types of commercially available dentifrices which were used in the study was found to be 8.4, 7.9, 7.9, 6.7, 7.2, 8.3, 8.4, 7.1, 6.5, 5.6, 8.2 and 6.5 respectively. Difference in mean salivary pH after brushing was found to be statistically significant for Colgate, Neem active group, Vicco, Triguard, Colgate active salt, Dabur meswak, Dabur babool, Close-up active gel, RA Thermoseal, Dabur lal dant manjan, Colgate powder groups. Mean salivary pH (before and after brushing) between study groups showed a statistically significant difference. Conclusion The pH of saliva increases after brushing in each commercially available dentifrice group.

scholarly journals Comparison of Copper Level and Color Vision in Pulmonary Tuberculosis Patients Before and After Ethambutol Treatment in Category I and II

2020 ◽  
Vol 3 (1) ◽  
pp. 19-25
Author(s):  
Febria Restissa ◽  
Ahmad Rasyid ◽  
Devi Azri Wahyuni
Keyword(s):  
Color Vision ◽  
Total Error ◽  
T Test ◽  
Wilcoxon Test ◽  
Copper Level ◽  
Tuberculosis Patients ◽  
Vision Disorder ◽  
Significant Difference ◽  
Before And After ◽  
Paired T Test

ABSTRACT Objective : to determine the correlation between duration of ethambutol and copper levels in serum with color vision disorder examined with Farnsworth Munsell 100 Hue (FM100) in patients with tuberculosis. Methods: This study was an explorative observation of 20 samples during November 2017 - January 2018 period. Comparative analysis using independent t-test, paired t-test, Wilcoxon test and Mann-Whitney test, while correlation analysis using Spearman's test and Pearson's test.  Results: There was a significant difference of FM100 value before and after in category I (p=0.000) with increase of total error value 11.80+5.31 or category II (p=0.000) with increase of total error value 15.00+7.41. There was significant difference of Cu2+ level before and after in category I (p=0.005) with decrease of Cu2+ level 15.57+5.04 mg/dL or category II (p=0.005) with decrease of Cu2+ level 31.66+7.35 mg/dL. There was significant correlation between color vision and duration of ethambutol (p=0.000), but there was no significant correlation of Cu2+ with color vision (p>0.05). Conclusion: The duration of Ethambutol was related to changes in color vision examined with FM100.

scholarly journals Analysis The Level Of Cattleman’s Knowledge Using The T-Test And Wilcoxon In Maju Farmer Group

2020 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Bismi Widi Hastari ◽  
Dyah Gandasari ◽  
Harry Harry
Keyword(s):  
T Test ◽  
Statistical Software ◽  
City Administration ◽  
Group Data ◽  
Significant Difference ◽  
Urine Production ◽  
Before And After ◽  
Post Test ◽  
Level Of Knowledge ◽  
Paired T Test

Tani Maju farmer group is one of the farming groups located in Rorotan Village, Cilincing District, North Jakarta City Administration. This group has a lot of sheep and advanced management. Despite they manage their sheep well, they are not well informed on how to manage the sewage from their castles (faces and urine). So far, they just throw away the sewage or gave them to fellow farmers. This study aimed to analyze the level of farmers' knowledge in making use of sheep's urine to be degraded into bio urine in the Maju Farmer group. Data was collected through the pre-test and post-test. The data were analyzed using paired t-test and Wilcoxon statistical software (IBM SPSS Statistics 25). The results of the study showed that farmers' knowledge in sewage (Urine) management increased; there is a significant difference in farmers' level of knowledge in bio urine production before and after bio urine extension.

scholarly journals A Comparative Analysis of the Piezoelectric Ultrasonic Appliance and Trephine Bur for Apical Location: An In Vitro Study

2021 ◽  
Vol 11 (10) ◽  
pp. 1034
Author(s):  
Esther Cáceres Madroño ◽  
Paulina Rodríguez Torres ◽  
Soraya Oussama ◽  
Álvaro Zubizarreta-Macho ◽  
María Bufalá Pérez ◽  
...  
Keyword(s):  
Study Groups ◽  
Experimental Models ◽  
Site Preparation ◽  
T Test ◽  
Entry Point ◽  
Osteotomy Site ◽  
End Point ◽  
Planning Software ◽  
Preparation Techniques

To compare and contrast the accuracy of piezoelectric ultrasonic insert (PUI) and trephine bur (TB) osteotomy site preparation techniques for apical location. (1) Material and methods: A total of 138 osteotomy site preparations were randomly distributed into one of two study groups. Group A: TB technique (n = 69) and B: PUI technique (n = 69). A preoperative cone-beam computed tomography scan and an intraoral scan were performed and uploaded to implant-planning software to plan the virtual osteotomy site preparations for apical location. Subsequently, the osteotomy site preparations were performed in the experimental models with both osteotomy site preparation techniques and a postoperative CBCT scan was performed and uploaded into the implant-planning software and matched with the virtually planned osteotomy site preparations to measure the deviation angle and horizontal deviation as captured at the coronal entry point and apical end-point between osteotomy site preparations using Student’s t-test statistical analysis. (2) Results: The paired t-test found statistically significant differences at the coronal entry-point deviations (p = 0.0104) and apical end-point deviations (p = 0.0104) between the TB and PUI study groups; however, no statistically significant differences were found in the angular deviations (p = 0.309) between the trephine bur and piezoelectric ultrasonic insert study groups. (3) Conclusions: The results showed that the TB is more accurate than the PUI for apical location.

scholarly journals Pengaruh Hidroterapi dan Relaksasi Benson (Hidroson) terhadap Penurunan Tekanan Darah dan Nadi

2019 ◽  
pp. 86-93
Author(s):  
Riska Putri Meiyana ◽  
Cornelia Dede Yoshima Nekada ◽  
Adi Sucipto
Keyword(s):  
Blood Pressure ◽  
Pressure Pulse ◽  
Sampling Technique ◽  
Complementary Therapy ◽  
T Test ◽  
Wilcoxon Test ◽  
P Value ◽  
Measure Blood Pressure ◽  
Before And After ◽  
Paired T Test

Abstrak Terapi komplementer merupakan salah satu alternatif untuk mengatasi masalah kesehatan. Hidroterapi dan relaksasi Benson merupakan terapi komplementer yang efektif terhadap tekanan darah dan nadi, namun masih jarang masyarakat yang memanfaatkannya. Diketahui ada pengaruh kombinasi hidroterapi dan relaksasi Benson (disebut hidroson) terhadap tekanan darah dan nadi. Metode penelitian pra-eksperimen, pre- and post- design dengan teknik purposive sampel pada 32 responden usia 26-65 tahun. Penelitian dilakukan dari tanggal 1-18 Maret 2019 di RT 19 dan 20, Sungapan V Desa Wahyuharjo, Kecamatan Lendah, Kabupaten Kulon Progo dengan tiap responden diberikan intervensi selama 3 hari berturut-turut. Instrumen yang digunakan adalah sphygmomanometer digital untuk mengukur tekanan darah dan nadi 5 menit sebelum dan sesudah pemberian terapi. Tekanan darah dianalisis dengan wilcoxon test dan paired t-test untuk nadi. Hasil analisis menunjukkan tekanan darah sistolik sebelum terapi sebesar 118,25 mmHg dan setelah terapi sebesar 111,00 mmHg, sehingga disimpulkan terjadi penurunan sebesar 7,25 mmHg dengan ρ Value 0,0001. Tekanan darah diastolik sebelum terapi sebesar 81,25 mmHg dan setelah terapi sebesar 78,75 mmHg, sehingga disimpulkan terjadi penurunan sebesar 2,50 mmHg dengan ρ value 0,002. Nadi sebelum terapi sebesar 82,30 x/menit dan setelah terapi sebesar 80,64 x/menit, sehingga disimpulkan terjadi penurunan sebesar 1,66 x/menit dengan ρ value 0,003. Ada pengaruh yang signifikan terhadap pemberian kombinasi hidroterapi dan relaksasi Benson (hidroson) terhadap penurunan tekanan darah dan nadi di RT 19 dan 20, Sungapan V. Kata kunci: hidroterapi, Relaksasi Benson, tekanan darah, nadi Abstract Complementary therapy is one alternative to solving health problems. Hydrotherapy and Benson's relaxation are effective complementary therapies for blood pressure and pulse, but still few patients utilize it. There is a known effect of hydrotherapy and Benson relaxation combination (called hydrosol) on blood pressure and pulse. The study method was pre-experimental with pre and post design with a purposive sampling technique on 32 respondents aged 26-65 years. The study was conducted from 1-18 March 2019 in neighborhood 19 and 20, Sungapan V, Wahyuharjo Village, Lendah District, Kulon Progo. Regency Each respondent was given intervention with hydrosol therapy for 3 consecutive days. The instrument used was a digital sphygmomanometer to measure blood pressure and pulse 5 minutes before and after the administration of therapy. Blood pressure was analyzed by the Wilcoxon test while pulsing by paired t-test. The analysis showed that systolic blood pressure before therapy was 118.25 mmHg and after therapy became 111,00 mmHg, so there was a decrease of 7,25 mmHg with a p-value of 0,0001. The diastolic blood pressure before treatment was 81,25 mmHg and after therapy became 78,75 mmHg, so there was a decrease of 2,50 mmHg with a p-value of 0,002 mm. The pulse before therapy was 82,30 x / min and after therapy became 80,64 x / min, so there was a decrease of 1,66 x / min with ρ-value 0,003. There is a significant effect of giving a combination of hydrotherapy and Benson relaxation (hydrosol) on reducing blood pressure and pulse among 32 subjects in neighborhood 19 and 20, Sungapan V. Keywords: hydrotherapy, Benson Relaxation, blood pressure, pulse

scholarly journals PENGARUH TERAPI BEKAM TERHADAP PENURUNAN KADAR KOLESTEROL PADA PASIEN HYPERCHOLESTEROLEMIA DI RUMAH SEHAT AL-HIJAMAAH TAHUN 2014/2015

2019 ◽  
Vol 1 (1) ◽  
pp. 41-47
Author(s):  
Sitti Aulia Hidayat ◽  
Salsa Anggeraini ◽  
TaufiQul Hidayat
Keyword(s):  
Sampling Method ◽  
Sampling Technique ◽  
Cupping Therapy ◽  
T Test ◽  
Primary Data ◽  
Probability Sampling ◽  
Cholesterol Levels ◽  
Before And After ◽  
Paired T Test ◽  
At Home

To know the effect of cupping therapy to decrease cholesterol levels in patients at Home Healthy hiperkolestrolemia Al-hijamaah in the year 2014/2015. Research observational analytic-numerical categorical pairs. Samples were hypercholesterolemic patients at Home Healthy Al-hijamaah in 2014/2015. Taken by using non-probability sampling technique with purposive sampling method. The primary data obtained directly from respondents, and analyzed by paired T test. The number of samples involved in this study were 45 respondents. Most of the samples were aged 20-45 years were 28 respondents (62.2%), female 27 respondents (60%), and average cholesterol levels before cupping therapy of 262.84 mg / dl and the average after cupping therapy 239.53 mg / dl. In this study, the results of Test Independent t test t test = 2.64 with p = 0,010 (p 0.05) which means that there are significant differences in cholesterol levels before and after cupping therapy

scholarly journals THE EFFECTIVENESS OF USING WEBTOONS TO DEVELOP STUDENTS’ SPEAKING PERFORMANCE ON RECOUNT

2019 ◽  
Vol 7 (3) ◽  
pp. 472-476
Author(s):  
Hay Citra Ningrat ◽  
Linda Mayasari
Keyword(s):  
High School ◽  
Experimental Research ◽  
T Test ◽  
Interactive Teaching ◽  
Before And After ◽  
Post Test ◽  
Speaking Performance ◽  
Paired T Test

Purpose of Study: This research is talking about the use of Webtoons comic in speaking on the recount. The aim of this research is to know whether this media is effective in teaching speaking on the recount. Methodology: It is pre-experimental research with one group of pre test - post test. Thirty students in X-5 class at Muhammadiyah 1 high school Surabaya become the sample. The treatments had been done twice, so there are two pairs of results. Results: The results are administered and calculated by using SPSS 21 for windows (paired T-test). The means of pair 1 are 31.93 (pre-test 1) and 34.77(post test 1). Meanwhile, the means of pair 2 are 32.00 (pre test 2) and 35.77 (post test 2). The sig value for pair 1 is .00 and pair 2 is .00. Based on these figures, it can be said that there is any different before and after the implementation of teaching speaking performance on a recount by using Webtoons. Even the improvement of students’ speaking competence on recount is not much, for the students. Implications/Applications: Webtoons is an interactive teaching medium which makes them more enthusiastic, comfortable and easily arrange their text to be told.

pH effect on osmotic response of collecting tubules to vasopressin and 8-CPT-cAMP

1983 ◽  
Vol 245 (2) ◽  
pp. F188-F197 ◽  
Author(s):  
M. Lorenzen ◽  
A. Taylor ◽  
E. E. Windhager
Keyword(s):  
Ph Effect ◽  
T Test ◽  
Osmotic Response ◽  
Collecting Tubule ◽  
Before And After ◽  
Luminal Ph ◽  
Collecting Tubules ◽  
Induced Changes ◽  
Paired T Test ◽  
Rabbit Cortical Collecting Tubule

The effect of peritubular and luminal pH changes on hydraulic conductance, (Lp, 10(-7) cm X s-1 X atm-1) in the isolated perfused rabbit cortical collecting tubule (CCT) was tested at 37 degrees C before and after administration of 20 microU/ml vasopressin or 10(-4) M 8-[p-chlorophenylthio]-adenosine cyclic monophosphate (8-CPT-cAMP). In vasopressin experiments when bath pH was changed from 7.58 to 7.16 or from 7.58 to 6.70, mean Lp decreased from 249 +/- 32 to 199 +/- 23 (n = 5; P less than 0.01) and from 231 +/- 38 to 201 +/- 36 (n = 5; NS), respectively. In contrast, in 8-CPT-cAMP experiments when bath [HCO3] was kept constant while CO2 was elevated the hydroosmotic response was increased. Using 2.5 mM HCO3, Lp at 0.4% CO2 was 275 +/- 15 and at 6% CO2 it was 352 +/- 50 (n = 4; paired t test; P less than 0.05). At 8.5 and 21.5 mM HCO3 raising CO2 from 2 to 13% and from 4 to 32% increased Lp from 237 +/- 71 to 410 +/- 32 (n = 4; paired t test; P less than 0.05) and from 282 +/- 45 to 449 +/- 63 (n = 6; paired t test; P less than 0.001), respectively. Reducing luminal pH from 7.40 to 5.40 had no effect on either vasopressin- or cAMP-induced changes in Lp. Accordingly, lowering the bath pH by increasing the PCO2 at constant [HCO3] markedly stimulates the response to 8-CPT-cAMP, whereas lowering the bath pH by reducing [HCO3] inhibits the vasopressin response.

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