scholarly journals Influence of Voxel Size on CBCT Images for Dental Implants Planning

2021 ◽  
Author(s):  
Ricardo Kehrwald ◽  
Hebert Sampaio de Castro ◽  
Samira Salmeron ◽  
Ricardo Alves Matheus ◽  
Gustavo Machado Santaella ◽  
...  
Keyword(s):  
Gold Standard ◽  
Three Dimensional ◽  
Reference Points ◽  
Bone Thickness ◽  
Voxel Size ◽  
Significance Level ◽  
Significant Difference ◽  
Bone Height ◽  
Digital Caliper

Abstract Objective This study was developed to evaluate the influence of voxel size on bone measurements for implant planning. Materials and Methods The research was performed by using edentulous synthetic human mandibles with different levels of bone resorption. For each mandible, height and bone thickness were measured with a digital caliper. The PaX-i3d device was used to acquire the volumes of the five mandibles, with 50kVp, 4 mA, and a voxel size of 0.08 mm. After the acquisition, the images were reconstructed in the software CS three-dimensional Imaging, with four different sizes of voxels: 0.1, 0.2, 0.3, and 0.4 mm. All volumes were analyzed by a single evaluator who performed measurements to obtain bone height and thickness, using the reference points that were considered in obtaining the gold standard. The data were analyzed by ANOVA with a significance level of 5%. Results There was no significant difference in the measurements obtained with different voxel sizes, both for bone height measurements and bone thickness. There was no statistically significant difference in measurements in thickness in comparison to the gold standard. Conclusion When necessary, to measure height and bone thickness, it is possible to recommend voxel images of larger size (0.40 mm) without compromising the quality of the patient's clinical planning.

scholarly journals Assessment of Dental Arch Changes and Buccal Bone Thickness in Patients treated with Self-ligating Brackets

2016 ◽  
Vol 17 (6) ◽  
pp. 434-439
Author(s):  
Deolino J Ibiapina ◽  
Paula V Oltramari-Navarro ◽  
Ricardo L Navarro ◽  
Marcio R Almeida ◽  
Daniela L Mendonça ◽  
...  
Keyword(s):  
Statistical Tests ◽  
Three Dimensional ◽  
Bone Plate ◽  
Dental Arch ◽  
Slight Reduction ◽  
Bone Thickness ◽  
Significance Level ◽  
Dimensional Changes ◽  
Digital Caliper ◽  
Bracket Design

ABSTRACT Aims To evaluate changes in transverse dimensions of upper arch and thickness of the buccal bone plate in patients undergoing orthodontic treatment during the leveling phase. Materials and methods Sixteen patients aged between 11 and 30 years, presenting with class I and II malocclusion, with minimum of 2 mm crowding treated without extraction, were divided into two groups: GI (n = 8), self-ligating brackets (Easyclip Aditek), and GII (n = 8), conventional preadjusted brackets (3M Unitek). The intercanines, interpremolar, and intermolar widths were measured in dental casts using a digital caliper, before (T1) and after 6 months of treatment (T2). Measurements of the thickness of the bone plate were performed by using cone-beam computed tomography (CBCT) scans and Dolphin three-dimensional program. Paired and nonpaired t tests were applied to analyze the results in and between the groups for the changes in the transversal arch dimensions and buccal bone thickness. Results In all statistical tests, the significance level was set at 5%. A nonsignificant increase in transverse dimensions and a slight reduction on thickness of the buccal bone plate were observed in both groups. Conclusion The dimensional changes of transverse and thickness of the bone plate during the initial phase of treatment were similar, regardless of the bracket design. Clinical significance It should be noted that the bracket design does not influence the treatment course regarding transversal dimensions and buccal bone thickness. How to cite this article Ibiapina DJ, Oltramari-Navarro PV, Navarro RL, Almeida MR, Mendonça DL, Conti ACCF. Assessment of Dental Arch Changes and Buccal Bone Thickness in Patients treated with Self-ligating Brackets. J Contemp Dent Pract 2016;17(6):434-439.

scholarly journals PEMANFAATAN EKSTRAK BELIMBING WULUH DAN EKSTRAK KULIT BUAH NAGA DALAM PEMBUATAN SELAI

2021 ◽  
Vol 8 (2) ◽  
pp. 62
Author(s):  
Nurul Aini ◽  
Dody Handito ◽  
Siska Cicilia
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Block Design ◽  
Fruit Peel ◽  
Significance Level ◽  
Randomized Block Design ◽  
Dragon Fruit ◽  
Significant Difference ◽  
Sensory Tests

This study aims to determine the concentration of starfruit juice and dragon fruit peel on the quality of jam. The experimental design used was a one-factor Randomized Block Design (RAK) with six treatments and three replications to obtain 18 samples. The treatments were the concentration of starfruit juice and dragon fruit peel extract with P1 (100% : 0%), P2 (85% : 15%), P3 (70% : 15%), P4 (55% : 45%), P5 ( 40% : 60%) and P6 (25% : 75%). Parameters observed were vitamin C levels, antioxidant activity, spread, and color as well as sensory tests (color, aroma, and taste). Data analysis results were tested by analysis of variance at a significance level of 5% using Co-Stat software. If there is a significant difference, then the orthogonal polynomial further test is carried out, while the physical and sensory tests are further tested using the Honest Significant Difference test at a significance level of 5%. The results showed that the concentration of star fruit juice and dragon fruit pulp did not have a different effect on vitamin C levels but had a significantly different effect on antioxidant activity, spread, and color. P6 treatment resulted in the highest antioxidant activity of 77.27%, 12.80 mg of vitamin C content, 10.1 cm of smearing power, and sensory properties that were acceptable to the panelists.

scholarly journals The Effects of Massage on the Quality of Sleeping in Babies 3-4 Months Old at Gelatik and Nuri IHCs of Tanjung Unggat Village of Tanjungpinang in 2014

2014 ◽  
Vol 1 (3) ◽  
pp. 230-235
Author(s):  
Utami Dewi ◽  
Fidyah Aminin ◽  
Harvensica Gunnara
Keyword(s):  
Sleep Quality ◽  
Health Professionals ◽  
Sampling Technique ◽  
Significance Level ◽  
Body Development ◽  
Significant Difference ◽  
Before And After ◽  
Waking Up ◽  
Quasi Experiment Study

Sleep is an essential need that must be met, especially in the development phase since brain and body development will occur during sleep. Thus, sleep disturbance is a problem that will cause adverse effects on growth and development, especially for babies. Sleep quality for babies can be improved by providing baby massage on a regular basis. The purpose of this study was to prove whether there were differences in sleep quality before and after the massage in babies aged 3-4 months in Gelatik and Nuri IHC (Integrated Health Center) of Tanjungunggat Village of Tanjungpinang Municipality. Design: This was a Quasi Experiment study with a pretest-posttest method. The sample consisted of 17 respondents selected by purposive sampling technique. The statistical test used in this study was a dependent t-test with a significance level of 0.05.Result: The results showed that there was no significant difference between baby sleep duration before and after the massage (p = 0.414). However, there was significant difference between the frequency of waking up before and after the massage (p = 0.001) and there was a significant difference between the duration of waking up before and after the massage (p = 0.046. Discuss: Based on the results of this study, it is suggested that mothers should improve their knowledge on the importance of baby massage provided by health professionals and the health professionals should provide and demonstrate clear, complete and sustained information to the mothers and other related parties surrounding the IHC.

scholarly journals Improving the quality of GP referrals to the Croydon Assessment & Liaison Team

BJPsych Open ◽  
2021 ◽  
Vol 7 (S1) ◽  
pp. S205-S205
Author(s):  
Gabriella Lewis ◽  
Lucia Chaplin ◽  
Gareth Knott ◽  
Alexandra Coull ◽  
Lamide Sobamowo
Keyword(s):  
Random Sample ◽  
Gold Standard ◽  
Relevant Information ◽  
Post Intervention ◽  
Significant Difference ◽  
Referral Form ◽  
Patient Assessments ◽  
New Form ◽  
Intervention Uptake

AimsTo increase the percentage of GP referrals to the Croydon Assessment & Liaison (A&L) Team deemed to be of ‘good quality’. The A&L Team receives a large number of referrals daily from GPs, and it was identified that many of these referrals did not include important and relevant information, leading to delays in patient assessments.MethodA questionnaire was distributed to A&L MDT members to collect information about what information they consider important in a GP referral. The project team reviewed the results of the questionnaire, along with current policies and guidelines, to create a set of criteria by which to assess the quality of GP referrals, as there was no pre-existing gold standard available. A random sample of 6 GP referrals per week stratified by locality was collected and assessed against these criteria.Using Plan-Do-Study-Act (PDSA) methodology change ideas were generated, and a GP referral form was identified as an important intervention to adopt. A previously-developed draft form was updated after a round of consultations with various stakeholders including Assessment & Liaison staff, GPs and the CCG. The new GP referral form was uploaded to the GP DSX electronic referrals platform and GP practices were also emailed directly to encourage them to use the new form.The proportion of GP referrals deemed to be of good quality was compared pre and post-intervention. Uptake of the new GP referral form was recorded as a process measure, and the length of time taken to discuss referrals at A&L daily referrals meetings as a counterbalance measure.ResultAt baseline 33% of GP referrals were deemed to be of good quality using the developed criteria. This improved to 58% after implementation of the new referral form in January 2021. There was poor overall uptake of the form, with only 32.5% of GP referrals utilising the new form so far, however of the referrals received on the new form 69% fulfilled the criteria for good quality. Comparison of length of discussion required for referrals with and without the new form showed no significant difference (7.7 and 7.6 minutes respectively).ConclusionImplementation of a standardised GP referral form was effective at increasing the proportion of referrals deemed to be of good quality. However, further PDSA cycles focused on improving uptake of the form will be required.

scholarly journals The biological seal of the implant–soft tissue interface evaluated in a tissue-engineered oral mucosal model

2012 ◽  
Vol 9 (77) ◽  
pp. 3528-3538 ◽  
Author(s):  
Wen L. Chai ◽  
Ian M. Brook ◽  
Anders Palmquist ◽  
Richard van Noort ◽  
Keyvan Moharamzadeh
Keyword(s):  
Soft Tissue ◽  
Cell Attachment ◽  
Tritiated Water ◽  
Three Dimensional ◽  
Permeability Test ◽  
Significant Difference ◽  
Surface Topographies ◽  
Tissue Interface

For dental implants, it is vital that an initial soft tissue seal is achieved as this helps to stabilize and preserve the peri-implant tissues during the restorative stages following placement. The study of the implant–soft tissue interface is usually undertaken in animal models. We have developed an in vitro three-dimensional tissue-engineered oral mucosal model (3D OMM), which lends itself to the study of the implant–soft tissue interface as it has been shown that cells from the three-dimensional OMM attach onto titanium (Ti) surfaces forming a biological seal (BS). This study compares the quality of the BS achieved using the three-dimensional OMM for four types of Ti surfaces: polished, machined, sandblasted and anodized (TiUnite). The BS was evaluated quantitatively by permeability and cell attachment tests. Tritiated water (HTO) was used as the tracing agent for the permeability test. At the end of the permeability test, the Ti discs were removed from the three-dimensional OMM and an Alamar Blue assay was used for the measurement of residual cells attached to the Ti discs. The penetration of the HTO through the BS for the four types of Ti surfaces was not significantly different, and there was no significant difference in the viability of residual cells that attached to the Ti surfaces. The BS of the tissue-engineered oral mucosa around the four types of Ti surface topographies was not significantly different.

scholarly journals Three dimensional evaluation of alveolar bone changes in response to different rapid palatal expansion activation rates

2017 ◽  
Vol 22 (1) ◽  
pp. 89-97 ◽  
Author(s):  
Brian LaBlonde ◽  
Manuel Lagravere Vich ◽  
Paul Edwards ◽  
Katherine Kula ◽  
Ahmed Ghoneima
Keyword(s):  
Alveolar Bone ◽  
Three Dimensional ◽  
Rank Test ◽  
Bone Thickness ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Group 2 ◽  
Activation Rates ◽  
Bone Height ◽  
Group 1

ABSTRACT Introduction: The aim of this multi-center retrospective study was to quantify the changes in alveolar bone height and thickness after using two different rapid palatal expansion (RPE) activation protocols, and to determine whether a more rapid rate of expansion is likely to cause more adverse effects, such as alveolar tipping, dental tipping, fenestration and dehiscence of anchorage teeth. Methods: The sample consisted of pre- and post-expansion records from 40 subjects (age 8-15 years) who underwent RPE using a 4-banded Hyrax appliance as part of their orthodontic treatment to correct posterior buccal crossbites. Subjects were divided into two groups according to their RPE activation rates (0.5 mm/day and 0.8 mm/day; n = 20 each group). Three-dimensional images for all included subjects were evaluated using Dolphin Imaging Software 11.7 Premium. Maxillary base width, buccal and palatal cortical bone thickness, alveolar bone height, and root angulation and length were measured. Significance of the changes in the measurements was evaluated using Wilcoxon signed-rank test and comparisons between groups were done using ANOVA. Significance was defined at p ≤ 0.05. Results: RPE activation rates of 0.5 mm per day (Group 1) and 0.8 mm per day (Group 2) caused significant increase in arch width following treatment; however, Group 2 showed greater increases compared to Group 1 (p < 0.01). Buccal alveolar height and width decreased significantly in both groups. Both treatment protocols resulted in significant increases in buccal-lingual angulation of teeth; however, Group 2 showed greater increases compared to Group 1 (p < 0.01). Conclusion: Both activation rates are associated with significant increase in intra-arch widths. However, 0.8 mm/day resulted in greater increases. The 0.8 mm/day activation rate also resulted in more increased dental tipping and decreased buccal alveolar bone thickness over 0.5 mm/day.

scholarly journals Three-dimensional alteration of constricted alveolar ridge affected by root thrusting with and without open-flap decortication

2017 ◽  
Vol 87 (5) ◽  
pp. 725-732
Author(s):  
Donghyun Hwang ◽  
Won-June Lee ◽  
Kyung-A Kim ◽  
Seung-Hak Baek ◽  
Young-Guk Park ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Bone Modeling ◽  
Alveolar Ridge ◽  
Histomorphometric Analysis ◽  
Mineral Density ◽  
Significant Difference ◽  
Fractional Analysis ◽  
Bone Fraction ◽  
Trabecular Number

ABSTRACT Objective: To investigate the morphometric and histological alterations of the constricted alveolar ridge when affected by root thrusting with and without open-flap decortication. Materials and Methods: Eight beagles were divided into three groups: C, control without root thrusting; R, root thrusting only; RD, root thrusting with alveolar decortication. The ridge constriction model was prepared in 16 mandibular quadrants after extraction of the third premolars. Reciprocal root thrusting of the second and fourth premolars was performed toward the constricted ridge for 10 weeks, having a moment of 900 g-mm. Open-flap decortication was conducted on the constricted bone surface in group RD. Micro-CT-based histomorphometric analysis and trichrome-staining-based tissue fractional analysis were performed to evaluate morphometric and microstructural changes on the ridge. Results: Group R revealed a higher percentage of bone volume (P &lt; .001), lower bone mineral density (P &lt; .01), and higher trabecular number (P &lt; .001) than did group C, which was supported by a higher bone fraction woven to lamellar bone (P &lt; .05) resulting from histologic fractional analysis. However, group RD showed no significant difference from group C. Conclusions: Root thrusting toward the constricted ridge induced hypertrophic bone modeling with a high trabecular fraction on the ridge. However, combined open-flap decortication with root thrusting did not improve the volume or quality of the constricted ridge.

scholarly journals Age as the Risk Factor that Affected the Increased Degree of Uterine Prolapse

2018 ◽  
Vol 1 (1) ◽  
pp. 20
Author(s):  
Shervil Kagayaita Sayko ◽  
Eighty Mardiyan Kurniawati ◽  
Pudji Lestari
Keyword(s):  
Elderly Women ◽  
Uterine Prolapse ◽  
Fisher Exact Test ◽  
Test Statistic ◽  
Cross Sectional ◽  
Significance Level ◽  
Exact Test ◽  
Significant Difference ◽  
The Relationship

Introduction: Uterine prolapse is a gynecological problem that women often experience with a prevalence of 50% and is predicted that the next 30 years will increase by 45% as life expectancy increases. Increased degrees of uterine prolapse have an impact on the deterioration of women's quality of life. The uterine prolapse is influenced by several mutually supportive factors. The purpose of this study was to analyze the relationship between these factors to the degree of uterine prolapse.Methods: This research is an observational analytic research with cross sectional approach. The number of samples were 65 patients with uterine prolapse at Policlinic Gynecology RSUD Dr. Soetomo Surabaya from 2015-2017. Sampling was done by consecutive sampling. To find out the significant level, the collected data will be tested with Fisher Exact Test statistic at significance level α = 0,05.Results: The result showed that there was significant difference between degree of uterine prolapse with age factor (p = 0,016) and obesity (p = 0,041). As for the parity factor (p = 0.508) there was no significant difference between the parity factor and the degree of uterine prolapse.Discussion: Age is a major factor affecting the degree of uterine prolapse, weakening of pelvic floor tissue and muscle in elderly women is the main cause. While on the obesity factor, there is no data to support that obesity is related to the degree of uterine prolapse because the trend indicates that the majority of patients are not obese. In contrast the parity factor, although according to the statistical test there is no difference to the degree of uterine prolapse, the trend shows that parity leads to increased incidence of uterine prolapse itself.Conclusion: Age is a factor that affects the degree of uterine prolapse.

scholarly journals Social integration of the individuals according to some variables who participated in Youth Camps of Ministry of Youth and SportsGençlik ve Spor Bakanlığı Gençlik Kamplarına katılan bireylerin sosyal uyumlarının bazı değişkenlere göre araştırılması

2016 ◽  
Vol 13 (3) ◽  
pp. 4906
Author(s):  
Summani Ekici ◽  
Tugay Kırcan
Keyword(s):  
Statistical Analysis ◽  
Social Integration ◽  
T Test ◽  
Extreme Sports ◽  
Significance Level ◽  
Outdoor Sports ◽  
Multiple Comparison Test ◽  
Significant Difference ◽  
One Way Anova

This research aims to examine social integration of the individuals according to some variables who participated in youth camps of Ministry of youth and sports. Universe of this study consists of the individuals who participated youth camps of Ministry of youth and sports while sample of study consists of 151 females and 251 males, total 402 participants who participated in Antalya Duacı and BoluAladağlar camps. Sports and Social Integrations Scale (SSIS) which had been developed by Yılmaz and friends (2006) composed of seven point likert type was used for  research group. In order to analyze the data SPSS 18 (Statistical Package for Social Science) package software was used, frequency and percent age analysis to determine the socio demographic characteristics of the students, one-way ANOVA to determine the differences between the sexes and in view of the benefits of participating in outdoor activities to determine whether they present differences in gender  t-test wasused. Tukey HSD multiple comparison test was applied with the purpose of determining which groups lead to statistical difference that comes out after one-way variance analysis (ANOVA). T-Test was applied in order to determine whether the sex of the participants creates difference in their opinions about the benefits of outdoor sports. The significance level of p<0,05 was taken into account in statistical analysis and interpretations of data. According to statistical analysis result, it was determined that 62.4% male and 37.6% female subjects. According to gender, found significant difference between the levels of social integration (p<0,05). Significant differences were observed in “emotional development subscale” among the male and female participants. The views of participants on the socialization aspects, compared to age [F(4-397)= 3,440; p< ,05]; the view of moral development dimension compared to age [F(4-397)= 2,569; p< ,05] and the view of regarding physical benefits when compared to ages have significant differences. According to this result, extreme sports affect young people’s personnel development and the quality of life in a positive way. ÖzetBu araştırma, Gençlik ve Spor Bakanlığı Gençlik Kamplarına Katılan Bireylerin Sosyal Uyumlarının Bazı Değişkenlere Göre Araştırılması” amacıyla yapılmıştır. Çalışmanın evereni; Gençlik ve Spor Bakanlığı Gençlik Kamplarına Katılan Bireyler oluştururken örneklemi; Antalya Duacı ve Bolu Aladağlar kamplarına katılan 151 kadın, 251 erkek toplam 402 bireyler oluşturmaktadır.   Araştırma grubuna Yılmaz ve ark. (2006) tarafından geliştirilen, yedi alt boyutlu ve Likert tipindeki “Sporda Sosyal Bütünleşme Ölçeği” (SSBÖ)  anketi uygulanmıştır.   Elde edilen verilerin değerlendirilmesinde SPSS 18 istatistik programı kullanılmış olup, öğrencilerin sosyo-demografik özelliklerini belirlemek için frekans ve yüzde analizi, cinsiyetler arasında Farklılığı tespit etmek için tek yönlü varyans analizi (ANOVA)  ve katılımcıların doğa sporlarının faydalarına ilişkin görüşlerinde cinsiyetlerinin farklılık oluşturup oluşturmadığını belirlemek için t-Testi uygulanmıştır. Tek yönlü varyans analizi (ANOVA) sonucunda ortaya çıkan istatistiksel farkın hangi gruplardan kaynakladığını belirlemek amacıyla Tukey HSD çoklu karşılaştırma testi uygulanmıştır. Verilerin istatistiksel analizinde ve yorumlarda, p< 0,05 anlamlılık düzeyi dikkate alınmıştır. Yapılan istatistiksel analiz sonucuna göre, deneklerin % 62,4 ünün erkek ve % 37,6 sının bayan olduğu belirlenmiştir. Cinsiyetlere göre sosyal uyum düzeyleri arasında (p<0,05) düzeyinde anlamlı farklılık bulunmuştur. Erkek ve Kadın” katılımcılar arasında “Duygusal gelişim” alt boyutunda anlamlı düzeyde bir farklılık görülmüştür. Katılımcıların doğa sporlarının sosyalleşme boyutuna ilişkin görüşleri yaşlarına göre [F(4-397)= 3,440; p< ,05];ahlaki gelişim boyutuna ilişkin görüşleri yaşlarına göre [F(4-397)= 2,569; p< ,05] ve fiziksel fayda boyutuna ilişkin görüşleri yaşlarına göre anlamlı bir farklılık göstermektedir.  Bu sonuçlara göre doğa sporları gençlerin kişisel gelişim ve hayat kalitelerini olumlu yönde etkilemektedir.

scholarly journals Dampak Kecanduan Smartphone Terhadap Kualitas Tidur Siswa SMP

JKEP ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 69-85
Author(s):  
Yupi Supartini ◽  
Puput Dwi Martiana ◽  
Titi Sulastri
Keyword(s):  
Sleep Quality ◽  
Sleep Disturbances ◽  
Statistical Test ◽  
High Rate ◽  
Smartphone Addiction ◽  
Poor Sleep ◽  
Cross Sectional ◽  
Significance Level ◽  
Significant Difference

Excessive smartphone use has a higher risk of sleep disturbances and affects a person’s sleep quality.  The purpose of this research is to determine the relationship between respondent’s characteristics and smartphone addiction to the sleep quality of adolescents at Budi Cendikia Islamic School Depok.  This type of research is quantitative with a descriptive analytic approach and a cross sectional research design.  The population is all 359 students.  Sampling in this study using stratified random sampling technique with 112 respondents.  The SAS-SV questionnaire was used to measure the level of smartphone addiction, while the PSQI questionnaire was used to measure sleep quality in adolescents.  The statistical test used Chi Square and Mann Whitney with a significance level of α = 0.05.  The results of the univariate statistical test showed that most of the respondents were male (52.7%), 13 years old (35.7%), had a high rate of smartphone addiction (61.6%), and poor sleep quality (70.5%).  Meanwhile, the results of the bivariate statistical test showed that there was a significant difference between gender (p = 0.020) and smartphone addiction (p = 0.007) with sleep quality, but there was no significant difference between age and sleep quality (p = 0.938). This study concludes that there is a relationship between gender and smartphone addiction on students' sleep quality, but there is no relationship between age and sleep quality of students.  Hence, it is necessary to limit the use of smartphones so that smartphone addiction can be minimized and sleep quality is good.”

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