Accuracy of Buccal Scan Procedures for the Registration of Habitual Intercuspation

2018 ◽  
Vol 43 (6) ◽  
pp. 573-580 ◽  
Author(s):  
M Zimmermann ◽  
A Ender ◽  
T Attin ◽  
A Mehl
Keyword(s):  
Statistical Analysis ◽  
Analysis Software ◽  
Scheffe Test ◽  
Intraoral Scanning ◽  
Significant Difference ◽  
Mandibular Teeth ◽  
Post Hoc ◽  
Relationship Of ◽  
Scanning Systems

SUMMARY Clinical Relevance: Accurate reproduction of the jaw relationship is important in many fields of dentistry. Maximum intercuspation can be registered with digital buccal scan procedures implemented in the workflow of many intraoral scanning systems. Objective: The aim of this study was to investigate the accuracy of buccal scan procedures with intraoral scanning devices for the registration of habitual intercuspation in vivo. The hypothesis was that there is no statistically significant difference for buccal scan procedures compared to registration methods with poured model casts. Methods and Materials: Ten individuals (full dentition, no dental rehabilitations) were subjects for five different habitual intercuspation registration methods: (CI) poured model casts, manual hand registration, buccal scan with inEOS X5; (BC) intraoral scan, buccal scan with CEREC Bluecam; (OC4.2) intraoral scan, buccal scan with CEREC Omnicam software version 4.2; (OC4.5β) intraoral scan, buccal scan with CEREC Omnicam version 4.5β; and (TR) intraoral scan, buccal scan with Trios 3. Buccal scan was repeated three times. Analysis of rotation (Rot) and translation (Trans) parameters was performed with difference analysis software (OraCheck). Statistical analysis was performed with one-way analysis of variance and the post hoc Scheffé test (p<0.05). Results: Statistical analysis showed no significant (p>0.05) differences in terms of translation between groups CI_Trans (98.74±112.01 μm), BC_Trans (84.12±64.95 μm), OC4.2_Trans (60.70±35.08 μm), OC4.5β_Trans (68.36±36.67 μm), and TR_Trans (66.60±64.39 μm). For rotation, there were no significant differences (p>0.05) for groups CI_Rot (0.23±0.25°), BC_Rot (0.73±0.52°), OC4.2_Rot (0.45±0.31°), OC4.5β_Rot (0.50±0.36°), and TR_Rot (0.47±0.65°). Conclusions: Intraoral scanning devices allow the reproduction of the static relationship of the maxillary and mandibular teeth with the same accuracy as registration methods with poured model casts.

In vivo exploration of brain phosphorus 31 metabolism in patients with senile dementia of Alzheimer type

1994 ◽  
Vol 9 (2) ◽  
pp. 105-109
Author(s):  
G Mecheri ◽  
Y Bissuel ◽  
J Dalery ◽  
JL Terra ◽  
G Balvay ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Senile Dementia ◽  
Phospholipid Metabolism ◽  
Alzheimer Type ◽  
Dementia Of Alzheimer Type ◽  
Non Invasive ◽  
Significant Difference ◽  
The Brain

SummaryIn vivo NMR 31p spectroscopy is a non invasive, non ionizing method of exploration of energy and phospholipid metabolism in the brain. This study consisted of comparing 31p spectra in five patients with Senile Dementia of Alzheimer Type (SDAT) with those of four controls of similar ages. Abnormal phosphonionocsters (PME) concentrations, either high or low, were found in the patients, but statistical analysis did not elicit any significant difference relative to controls.

scholarly journals Clinical evaluation of the failure rate of metallic brackets bonded with orthodontic composites

2012 ◽  
Vol 23 (4) ◽  
pp. 399-402 ◽  
Author(s):  
Fábio Lourenço Romano ◽  
Rodrigo Alexandre Valério ◽  
Jaciara Miranda Gomes-Silva ◽  
José Tarcísio Lima Ferreira ◽  
Gisele Faria ◽  
...  
Keyword(s):  
Failure Rate ◽  
Orthodontic Treatment ◽  
Color Change ◽  
Rank Test ◽  
Initial Alignment ◽  
Bond Failure ◽  
Log Rank Test ◽  
Significant Difference ◽  
Mandibular Teeth

The purpose of the present study was to evaluate in vivo the failure rate of metallic brackets bonded with two orthodontic composites. Nineteen patients with ages ranging from 10.5 to 38.7 years needing corrective orthodontic treatment were selected for study. The enamel surfaces from second premolars to second premolars were treated with Transbond Plus-Self Etching Primer (3M Unitek). Next, 380 orthodontic brackets were bonded on maxillary and mandibular teeth, as follows: 190 with Transbond XT composite (3M Unitek) (control) and 190 with Transbond Plus Color Change (3M Unitek) (experimental) in contralateral quadrants. The bonded brackets were light cured for 40 s, and initial alignment archwires were inserted. Bond failure rates were recorded over a six-month period. At the end of the evaluation, six bond failures occurred, three for each composite. Kaplan-Meyer method and log-rank test (Mantel-Cox) was used for statistical analysis, and no statistically significant difference was found between the materials (p=0.999). Both Transbond XT and Transbond Plus Color Change composites had low debonding rates over the study period.

Attitudes Toward Physical Activity of Elite Cerebral Palsied Athletes

1986 ◽  
Vol 3 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Marilyn A. Cooper ◽  
Claudine Sherrill ◽  
David Marshall
Keyword(s):  
Physical Activity ◽  
Social Experience ◽  
Post Hoc Analysis ◽  
Scheffe Test ◽  
Positive Attitudes ◽  
Significant Difference ◽  
Activity Scale ◽  
And Gender ◽  
Post Hoc ◽  
Physical Activity Scale

Attitudes toward physical activity were examined in relation to sports classification (nonambulatory vs. ambulatory) and gender for elite cerebral palsied athletes and were compared to attitudes of elite Canadian able-bodied athletes (Alderman, 1970). Subjects were 165 CP adult athletes who competed in the 1983 National CP Games, Ft. Worth, Texas. Data were collected by interview on the Simon and Smoll Attitude Toward Physical Activity Scale (SATPA). SATPA answers were treated with MANOVA and ANOVA, and the Scheffé test was used for post hoc analysis. No significant difference was found among class, gender, and class-by-gender combinations in attitudes toward physical activity. Adult CP athletes have positive attitudes toward the total concept of physical activity, but are significantly less favorably disposed to physical activity as a thrill and as long and hard training than as social experience, health and fitness, beauty, and tension release.

scholarly journals Comparison of Orthodontic Bracket Debonding Force and Bracket Failure Pattern on Different Teeth In Vivo by a Prototype Debonding Device

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Tamzid Ahmed ◽  
Norma Ab Rahman ◽  
Mohammad Khursheed Alam
Keyword(s):  
Failure Pattern ◽  
Point Scale ◽  
Orthodontic Bracket ◽  
Adhesive Remnant Index ◽  
Significant Difference ◽  
Different Types ◽  
Post Hoc ◽  
Bracket Failure ◽  
One Way Anova

Objective. To compare the orthodontic bracket debonding force and assess the bracket failure pattern clinically between different teeth by a validated prototype debonding device. Materials and Method. Thirteen (13) patients at the end of comprehensive fixed orthodontic treatment, awaiting for bracket removal, were selected from the list. A total of 260 brackets from the central incisor to the second premolar in both jaws were debonded by a single clinician using a validated prototype debonding device equipped with a force sensitive resistor (FSR). Mean bracket debonding forces were specified to ten (10) groups of teeth. Following debonding, Intraoral microphotographs of the teeth were taken by the same clinician to assess the bracket failure pattern using a 4-point scale of adhesive remnant index (ARI). Statistical analysis included one-way ANOVA with post hoc Tukey HSD and independent sample t -test to compare in vivo bracket debonding force, Cohen’s kappa ( κ ), and a nonparametric Kruskal-Wallis test for the reliability and the assessment of ARI scoring. Results. A significant difference ( p < 0.001 ) of mean debonding force was found between different types of teeth in vivo. Clinically, ARI scores were not significantly different ( p = 0.921 ) between different groups, but overall higher scores were predominant. Conclusion. Bracket debonding force should be measured on the same tooth from the same arch as the significant difference of mean debonding force exists between similar teeth of the upper and lower arches. The insignificant bracket failure pattern with higher ARI scores confirms less enamel damage irrespective of tooth types.

scholarly journals PENGARUH PELATIHAN LADDER DRILL DENGAN METODE ASCENDING DAN DESCENDING TERDADAP PENINGKATAN KECEPATAN DAN KELINCAHAN

2021 ◽  
Vol 7 (1) ◽  
pp. 1-8
Author(s):  
Muhammad Dzul Fikri ◽  
Oce Wiriawan ◽  
Achmad Widodo
Keyword(s):  
Control Group ◽  
Training Methods ◽  
Control Group Design ◽  
Group Design ◽  
Speed Test ◽  
Scheffe Test ◽  
Significant Difference ◽  
Run Test ◽  
Post Hoc ◽  
Shuttle Run

Abstrak Penelitian ini dilatarbelakangi oleh penurunan prestasi atlet futsal SMA Antartika Sidoarjo. Penelitian ini bertujuan mengkaji pengaruh latihan Ladder Drill dengan metode latihan ascending dan metode latihan descending terhadap peningkatan kecepatan dan kelincahan pada siswa ekstrakurikuler futsal SMA Antartika Sidoarjo. Jenis penelitian dalam penelitian ini adalah kuantitatif dengan metode quasi-experiment. Desain yang digunakan dalam penelitian adalah Pretest-Posttest Control Group Design yang dilaksanakan dalam 24 kali pertemuan dalam 8 minggu. Instrumen tes kecepatan menggunakan lari 40 meter, sedangkan instrumen kelincahan menggunakan shuttle run test. Analisis data yang digunakan untuk mengolah hasil penelitian menggunakan uji-t, MANOVA, dan Post Hoc dengan uji Scheffe. Hasil penelitian menunjukkan peningkatan kecepatan dan kelincahan yang signifikan dari metode ascending dan descending. Sedangkan analisis post hoc uji Scheffe tidak terdapat perbedaan yang signifikan antara kelompok ascending dan kelompok descending terhadap kecepatan dan kelincahan. Hasil penelitian ini menyimpulkan bahwa kedua metode ascending dan descending, dapat meningkatkan kecepatan dan kelincahan sama baiknya terhadap atlet futsal SMA Antartika Sidoarjo. Abstract This research was motivated by a decrease in the achievement of futsal athletes at SMA Antartika Sidoarjo. This study aims to examine the effect of ladder drill training with ascending training methods and descending training methods on increasing speed and agility in futsal extracurricular students at SMA Antartika Sidoarjo. The type of research in this research is quantitative with a quasi-experimental method. The design used in the study was the Pretest-Posttest Control Group Design which was carried out in 24 meetings in 8 weeks. The speed test instrument uses 40 meters running, while the agility instrument uses the shuttle run test. Analysis of the data used to process the research results using the t-test, MANOVA, and Post Hoc with the Scheffe test. The results showed a significant increase in speed and agility from the ascending and descending methods. While the post hoc analysis of the Scheffe test, there was no significant difference between the ascending and descending groups in terms of speed and agility. The results of this study concluded that both ascending and descending methods can improve speed and agility as well as futsal athletes at SMA Antartika Sidoarjo.

scholarly journals Color Stability of a New Rice Husk Composite in Comparison with Conventional Composites after Exposure to Commonly Consumed Beverages in Malaysia

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Kacharaju Kranthi Raja ◽  
Padmini Hari ◽  
Melissa Queen Kha Chin ◽  
Kiran Singbal ◽  
Ismail M. Fareez
Keyword(s):  
Statistical Analysis ◽  
Rice Husk ◽  
Color Stability ◽  
Color Changes ◽  
Mixed Anova ◽  
Organic Rice ◽  
Color Measurements ◽  
Significant Difference ◽  
Color System ◽  
Post Hoc

Objective. To evaluate the color stability of a new organic rice husk nanocomposite as compared to four conventional composites after exposure to commonly consumed beverages in Malaysia. Methods. One hundred and twenty-five disk samples were prepared from a new rice husk-based composite and four other conventional methacrylate-based light-cured composites of shade A2. The samples were immersed in four commonly consumed beverages: coco-based drink, kopi, Chinese tea, and teh tarik for four weeks. The color measurements were carried out every week using the reflectance spectrophotometer according to the CIE L∗a∗b∗ color system. Color changes of samples (ΔE) in each week were calculated. Statistical analysis was carried out by performing a mixed ANOVA and Tukey’s post hoc test in order to analyse the differences in ΔE. Results. The findings revealed a statistically significant difference of ΔE reading (p<0.05) among all composites immersed in all four beverages after four weeks. Rice husk composites exhibited lesser color stability as compared to Ceram.X One Universal (p<0.001) and G-aenial Universal Flo (p<0.001) but showed higher color stability compared to Solare-X (p<0.001) and Neofil (p<0.001). Coffee and Chinese tea had the most significant impact on color changes (p<0.05) observed in all composites over four weeks of study. Conclusion. Rice husk composite showed acceptable color stability. It can be considered as an alternative to conventional composites due to its eco-friendly properties.

Pimpinella anisum essentiel oil enhances spatial learning performance of rats exposed to Hgcl2 during the developmental period

2019 ◽  
Vol 8 (4) ◽  
pp. 162-166
Author(s):  
Arabi Wafaa ◽  
Kahloula Khaled ◽  
Adli Djallal E.H. ◽  
Ziani Kaddour ◽  
Slimani Miloud
Keyword(s):  
Essential Oil ◽  
Developmental Period ◽  
Learning Performance ◽  
Mercury Chloride ◽  
Lactation Period ◽  
Pimpinella Anisum ◽  
Significant Difference ◽  
Post Hoc

The essential oil of Pimpinella anisum has been widely used in traditional medicine to treat a variety of diseases. This study was aimed to test, in vivo, effect of exposition to mercury chloride (100mg/L) in wistar rats during the gestation and lactation period. On the other hand, treatment of pups with essential oil of P. anisum (0.25 ml/kg) for 21 days. The behavioural patterms evaluated was spatial memory ( Morris water maze) and the determination of mercury concentration in blood and brain. The data were analysed by two way analyses of variance (ANOVAs). When a significant difference was found, the Student Newman Keuls post hoc test was conducted. The results of the present study demonstrated that exposure to mercury in developmental period induced, significantly decrease of the learning performance (p < 0.01; p < 0.05) compared to control rats. Thus, the concentration of mercury in the intoxicated group is high in the blood and brain. However, the administration of P. anisum essential oil resulted into an improvement of learning perfor-mance (p< 0.01; p< 0.05) and reduction of mercury blood and brain mercury. In conclusion, our results demonstrate that mercury exposure during the developmental period induces learning disabilities and remains trapped in blood and brain. This could be improved by the treatment with Pimpinella anisum essential oil.

scholarly journals Benefits and challenges in conducting long-term growth hormone therapy in patients with Prader-Willi syndrome

Genetika ◽  
2020 ◽  
Vol 52 (1) ◽  
pp. 149-160
Author(s):  
Olga Antonova ◽  
Hadil Kathom ◽  
Evgeni Grigorov ◽  
Rada Staneva ◽  
Savina Hadjidekova ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Statistical Analysis ◽  
Uniparental Disomy ◽  
Prader Willi Syndrome ◽  
Gh Treatment ◽  
Maternal Uniparental Disomy ◽  
Significant Difference ◽  
Genetic Mechanisms ◽  
Post Hoc

The purpose of this report is to comment the results from long-term growth hormone (GH) treatment of Bulgarian patients suffering from rare genetic disease-Prader-Willi syndrome (PWS) with reference to the age, body composition, complications and genetic etiology. Statistical analysis was performed by ANOVA with post hoc Kruskal-Wallis test and Dunn's multiple comparison tests. In 90% of the patients maternal uniparental disomy (mUPD) was found to be the cause of the disease. No cases due to imprinting defects are found. The BMI data shows no statistically significant difference between BMI at diagnosis (21.850), at the beginning of the GH therapy (21.852) and current BMI (24.09) - measured under the GH background. Early GH treatment allows to overcome arising obstacles in time and to improve the quality of life for PWS children and their families. During the fourteen years study period only ten patients were diagnosed with the disease. Ninety percent (n=9) of the children were found to be with maternal UPD (mUPD) and only one case was due to deletion in 15q11-13. These results are in agreement with other studies in the field which shows the need for reassessment and new robust statistical analysis of the frequency of genetic mechanisms for PWS.

scholarly journals Silicone loop alternative for posterior bitewing radiography

2021 ◽  
Vol 54 (1) ◽  
pp. 35
Author(s):  
Shinta Amini Prativi ◽  
Shanty Chairani ◽  
Tyas Hestingsih
Keyword(s):  
Statistical Analysis ◽  
Alveolar Bone ◽  
Medical Field ◽  
Bitewing Radiography ◽  
Coverage Density ◽  
Significant Difference ◽  
Mandibular Teeth ◽  
Quality Assessments

Background: Bitewing radiography is a technique that depicts the crown of the maxillary and mandibular teeth and the crest of the alveolar bone in the same receptor. The use of film holders and paper loops in bitewing techniques is very helpful in standardising radiographs, but it has some disadvantages, including the lack of efficiency and discomfort. Therefore, silicone has been widely used in the medical field as a replacement for paper loops. Purpose: This study was conducted to describe the compatibility of the silicone material as an alternative for bitewing radiography. Methods: This research is experimental and a one-shot case study. It used the Mann–Whitney (P < 0.05) test for statistical analysis to compare the results of the radiographs using silicone loops and paper loops and to analyse the quality of each radiograph: object coverage, density, contrast, sharpness, geometry, and overlapping. Results: The images where silicone loops were used show adequate results in six radiograph quality assessments. There was no significant difference between the radiographs that were obtained using the silicon loop and the paper loop (p > 0.05). Conclusion: Silicone loops can be an alternative tool for bitewing radiography because they result in optimal image quality.

scholarly journals Comparative Evaluation of Mixture of Calcium Hydroxide and Chlorhexidine, with Triple Antibiotic Paste and Combination of Calcium Hydroxide, Chlorhexidine, and Lycopene on Incidence of Interappointment Flare-up: An in vivo Study

2017 ◽  
Vol 1 (1) ◽  
pp. 10-14
Author(s):  
Priyanka S Bilgi ◽  
Nimisha C Shah ◽  
Jash Mehta
Keyword(s):  
Calcium Hydroxide ◽  
Comparative Evaluation ◽  
Rating Scale ◽  
Clinical Performance ◽  
Group Iii ◽  
Group I ◽  
Triple Antibiotic Paste ◽  
Significant Difference ◽  
Post Hoc

ABSTRACT Background The present study was undertaken to evaluate the most suitable intracanal medicament with the least incidence on Interappointment flare-up. Aim To clinically evaluate and compare the effect of combination of calcium hydroxide (CH) and chlorhexidine (CHX) with triple antibiotic paste and combination of CH, CHX, and lycopene on interappointment flare-up. Materials and methods A total of 36 patients requiring root canal treatment were selected according to the selection criteria and divided into three groups: Group I – CH and CHX, group II – triple antibiotic paste, and group III – CH, CHX, and lycopene. Access opening and biomechanical preparation of all samples, and intracanal medicaments were placed respectively. Subsequently, interappointment flare-up was assessed at 1, 2, 3, 7, and 14 days using verbal rating scale. Statistical analysis used One way analysis of variance test and Tukey's post hoc test. Results There was no statistically significant difference seen in the clinical performance of CH + CHX, triple antibiotic paste, and mixture of CH + CHX + lycopene at the end of 14 days in terms of interappointment flare-up. Conclusion All the intracanal medicaments were effective in reducing interappointment flare-up at the end of 14 days. How to cite this article Bilgi PS, Shah NC, Mehta J. Comparative Evaluation of Mixture of Calcium Hydroxide and Chlorhexidine, with Triple Antibiotic Paste and Combination of Calcium Hydroxide, Chlorhexidine, and Lycopene on Incidence of Interappointment Flare-up: An in vivo Study. Int J Clin Dent Res 2017;1(1):10-14.

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