scholarly journals Dental and Chronological Ages as Determinants of Peak Growth Period and Its Relationship with Dental Calcification Stages

2016 ◽  
Vol 10 (1) ◽  
pp. 99-108 ◽  
Author(s):  
George Litsas ◽  
Alessandra Lucchese
Keyword(s):  
Correlation Coefficient ◽  
Skeletal Maturity ◽  
Stage Iv ◽  
Growth Period ◽  
T Test ◽  
Skeletal Maturation ◽  
Dental Age ◽  
Peak Period ◽  
Paired Samples ◽  
Cervical Vertebral Maturation

Purpose:To investigate the relationship between dental, chronological, and cervical vertebral maturation growth in the peak growth period, as well as to study the association between the dental calcification phases and the skeletal maturity stages during the same growth period.Methods:Subjects were selected from orthodontic pre-treatment cohorts consisting of 420 subjects where 255 were identified and enrolled into the study, comprising 145 girls and 110 boys. The lateral cephalometric and panoramic radiographs were examined from the archives of the Department of Orthodontics, Aristotle University of Thessaloniki, Greece. Dental age was assessed according to the method of Demirjian, and skeletal maturation according to the Cervical Vertebral Maturation Method. Statistical elaboration included Spearman Brown formula, descriptive statistics, Pearson’s correlation coefficient and regression analysis, paired samples t-test, and Spearman’s rho correlation coefficient.Results:Chronological and dental age showed a high correlation for both gender(r =0.741 for boys, r = 0.770 for girls, p<0.001). The strongest correlation was for the CVM Stage IV for both males (r=0.554) and females (r=0.68). The lowest correlation was for the CVM Stage III in males (r=0.433, p<0.001) and for the CVM Stage II in females (r=0.393, p>0.001). The t-test revealed statistically significant differences between these variables (p<0.001) during the peak period. A statistically significant correlation (p<0.001) between tooth calcification and CVM stages was determined. The second molars showed the highest correlation with CVM stages (CVMS) (r= 0.65 for boys, r = 0.72 for girls).Conclusion:Dental age was more advanced than chronological for both boys and girls for all CVMS. During the peak period these differences were more pronounced. Moreover, all correlations between skeletal and dental stages were statistically significant. The second molars showed the highest correlation whereas the canines showed the lowest correlation for both gender.

scholarly journals Correlation between Dental and Skeletal Maturity in Korean Children

2021 ◽  
Vol 48 (3) ◽  
pp. 255-268
Author(s):  
Seong Jin Kim ◽  
Je Seon Song ◽  
Ik-Hwan Kim ◽  
Seong-Oh Kim ◽  
Hyung-Jun Choi
Keyword(s):  
Rank Order ◽  
Skeletal Maturity ◽  
Correlation Coefficients ◽  
Growth Period ◽  
Skeletal Maturation ◽  
Korean Children ◽  
Panoramic Radiographs ◽  
Second Molar ◽  
Maturity Stages ◽  
Lateral Cephalograms

The aim of this study was to investigate the relationships between the stages of calcification of various teeth and skeletal maturity stages among Korean subjects. The samples were derived from hand-wrist, panoramic radiographs, and lateral cephalograms of 743 subjects (359 males and 384 females) with ages ranging from 6 to 14 years. Calcification of seven permanent mandibular teeth on the left side were rated according to the system of Demirjian. To evaluate the stage of skeletal maturation, hand-wrist radiographs were analyzed by skeletal maturity indicators (SMI) system of Fishman and lateral cephalograms by cervical vertebral maturation (CVM) method of Baccetti. Statistically significant relationships were found between dental calcification and skeletal maturity stages according to Spearman rank-order correlation coefficients (r = 0.40-0.84, p < 0.001). The second molar showed the highest correlation and central incisor showed the lowest correlation for female and male subjects. For both sexes, canine stage G and second molar stage F were related to SMI 6 and CS 3. Because of the high correlation coefficients, this study suggests that tooth calcification stages from panoramic radiographs might be clinically useful as a maturity indicator of the pubertal growth period in Korean patients.

scholarly journals Cohen’s criteria for interpreting practical significance indicators: A critical study

2020 ◽  
Vol 15 (2) ◽  
pp. 246-258
Author(s):  
Ibrahim Said Humaid Alwahaibi ◽  
Dawood Abdul Malik Al-Hadabi ◽  
Hussein Ali Talib Al-Kharousi
Keyword(s):  
Correlation Coefficient ◽  
T Test ◽  
Practical Significance ◽  
Critical Study ◽  
Control Groups ◽  
Gain Ratio ◽  
Paired Samples ◽  
Hypothetical Data ◽  
Mathematical Equations ◽  
And Control

The present study aimed at clarifying the various shortcomings of the Cohen’s criteria for the interpretation of the values of the practical significance indicators. The hypothetical data were used for two experimental and control groups and calculating the paired-samples t-test. To clarify the inadequacy of Cohen’s criteria in interpreting practical significance indicators, it was compared with another criterion which is Black’s Modified Gain Ratio. Through the compatibility of mathematical equations to calculate the practical significance and the values of the interpretations of the correlation coefficient, the present study suggested that a criterion for the practical significance should be as follows: small when the values of the index (d) are less than (0.631), medium when the values are between 0.631 and 1.50 and large when the values are equal to or greater than (1.51). The study showed the justifications that distinguish this criterion from the Cohen criterion. Keywords: Cohen’s, criteria, practical, significance.

scholarly journals Correlation between Chronological Age, Cervical Vertebral Maturation and Fishman’s Skeletal Maturity Indicators in Central India Population

2019 ◽  
Vol 9 (2) ◽  
pp. 52-56
Author(s):  
Natasha Patil ◽  
Neha Maheshwari ◽  
Rohit Sharma ◽  
Shashank Soni ◽  
Ashish Kushwah
Keyword(s):  
Skeletal Maturity ◽  
Cervical Vertebrae ◽  
Rank Correlation ◽  
Cervical Vertebra ◽  
Central India ◽  
Growth Period ◽  
Growth Spurt ◽  
Chronological Age ◽  
Spearman Rank Correlation Analysis ◽  
Cervical Vertebral Maturation

Introduction: Skeletal maturity indicators are very important indicators when diagnosing and panning the treatment in growing population. Cervical Vertebrae Method (CVM) and Fishman’s Skeletal Maturity Indicators are two commonly used methods for the diagnosis and treatment planning. The aim of the study was to investigate the correlation between cervical vertebral maturation (CVM)and Fishman’s hand-wrist skeletal maturity indicator and chronological age by including subjects within the range of circumpubertal growth spurt in Central India. Materials & Method: One Twenty Five contemporary hand-wrist and lateral cephalometric radiographs from population of Central India were randomly selected and analyzed. All subjects were within the circumpubertal period i.e. female subjects were between 10 and 15 years of age, and the male subjects were between 12 and 17 years of age. The hand-wrist bone analysis was evaluated using the method developed by Fishman whereas cervical vertebra bone analysis was evaluated using the method developed by Baccetti and co-workers. These two methods and chronological age were correlated using the Spearman rank correlation analysis. Result: CVM was significantly correlated with hand-wrist maturation (r=0.8868). However low correlation was found between the CVM and chronological age( r =0.7139) and little correlation was found between the HWM and chronological age ( r =0.6892). Conclusion: CVM is a valid indicator of skeletal growth during the circumpubertal growth period and has a high correlation with the HWM for the Central India population. However chronological age is not suitable to measure skeletal maturity as shown by the low correlations found between the chronological age and both CVM and HWM.

scholarly journals Reliability of cervical vertebral maturation compared to hand-wrist for skeletal maturation assessment in growing subjects: A systematic review

2021 ◽  
pp. 1-12
Author(s):  
Martina Ferrillo ◽  
Claudio Curci ◽  
Andrea Roccuzzo ◽  
Mario Migliario ◽  
Marco Invernizzi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Skeletal Maturity ◽  
Assessment Method ◽  
Skeletal Maturation ◽  
Clinical Role ◽  
Data Synthesis ◽  
Spinal Curve ◽  
Item Quality ◽  
Medium Quality ◽  
Cervical Vertebral Maturation

BACKGROUND: Radiographic methods to assess skeletal maturity (SM) have a key role in adolescent idiopathic scoliosis (AIS) management, allowing to predict risk of spinal curve progression. Cervical vertebral maturation (CVM) has been recently introduced as an alternative tool to assess skeletal maturity; however, its clinical role is still debated. OBJECTIVE: This systematic review aimed to investigate the reliability of CVM in the SM assessment of growing subjects, comparing it to hand wrist maturation (HVM). METHODS: PubMed, Scopus, and Web of Science databases were systematically searched from inception until 31st December 2020 to identify observational studies presenting: growing subjects as participants; CVM methods as intervention; HVM methods as comparator; reliability for SM assessment as outcome. A 10-item quality tool has been used to assess study quality. RESULTS: Out of 205 papers, 12 papers were included in the data synthesis. We classified 10 studies (83.3%) as medium-quality studies and 2 studies (16.7%) as high-quality studies. Eight studies reported a significant correlation between CVM Baccetti and different HWM methods. CONCLUSION: Taken together, these findings suggested that CVM might be considered as reliable SM assessment method compared to HWM in growing subjects. However, further studies are warranted to confirm these findings.

scholarly journals The Correlation between Dental Stages and Skeletal Maturity Stages

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Ayah Jourieh ◽  
Haris Khan ◽  
Samer Mheissen ◽  
Muhammad Assali ◽  
Mohammad Khursheed Alam
Keyword(s):  
Rank Order ◽  
Skeletal Maturity ◽  
Growth Period ◽  
Panoramic Radiograph ◽  
Skeletal Maturation ◽  
Dental Maturation ◽  
Second Molar ◽  
Maturity Stages ◽  
Study Results ◽  
Roc Area

Introduction. The determination of skeletal maturity stages is very important in orthodontic treatment planning, especially skeletal discrepancies in growing individuals. A hand-wrist radiograph is considered the most accurate approach for skeletal maturity detection. Dental calcification stages have been suggested as an alternative diagnostic method to decrease radiation exposure. The recent study is aimed at detecting the efficacy of dental calcification stages in assessing skeletal maturity during the prepubertal and pubertal growth periods. Methods. Patients’ records were collected from the Aleppo Orthodontic Center. Dental maturity stages were assessed from a panoramic radiograph using the Demirjian method, while skeletal maturity stages were determined using the Björk method. Four permanent left mandibular teeth were included (canine, 1st premolar, 2nd premolar, and 2nd molar) for the study. Results. From 517 records, 295 records (145 males and 150 females) were included. The Spearman rank-order correlation coefficients between skeletal maturation and dental maturation were strong and statistically significant (ranging from 0.789 to 0.835). The highest correlation was between skeletal stages and the second molar ( r = 0.829 and 0.88 in males and females, respectively). Receiver operating characteristic (ROC ) curve suggested a high validity of the sum of dental stages for the four teeth in identifying MP3= stage (sensitivity was 70%, specificity was 92.77%, and ROC area was 0.81) but not for MP3cap (sensitivity was 50.85%, specificity was 81.36%, and ROC area was 0.66). Conclusions. The correlation between the skeletal maturity stages and the dental calcification stages was high. The orthodontist can use the dental stages as a definite diagnostic tool for prepubertal growth period.

scholarly journals Evaluation of the Skeletal Maturation Using Lower First Premolar Mineralisation

2013 ◽  
Vol 59 (6) ◽  
pp. 289-292 ◽  
Author(s):  
Mártha I. Krisztina ◽  
Ogodescu A ◽  
Gyergyay Réka ◽  
Burján Zsuzsa
Keyword(s):  
Skeletal Maturity ◽  
Cervical Vertebrae ◽  
Skeletal Maturation ◽  
Growth Spurt ◽  
Optimal Time ◽  
Dental Age ◽  
Clinical Value ◽  
Mandibular First Premolar ◽  
Growth Evaluation ◽  
Treatment Procedures

Abstract Background: Dental age assessment is very useful in the pediatric dentist’s and orthodontist’s everyday practice. The eventual lack of correlation between dental age, skeletal maturation and chronological age can influence treatment procedures regarding mostly their application time. The aim of our study was to investigate the relationship between dental age based on the calcification stages of the first lower premolar (PM1i) and skeletal maturity stages using cervical vertebrae (C2, C3, C4) among Romanian individuals and to determine the clinical value of the first premolar as a growth evaluation index. Material and methods: In a sample of 30 patients (13 males, 17 females) ranging in age from 9 to 15 years (mean age 11.2 years) we examined the orthopantomography radiographs (OPT) and lateral cephalometric radiographs of each case. Results: The biological development of girls is about 1.5 years more advanced than in boys. When the Demirjian Index was at stage F, then CVS was at stage 3.4, which means that in developmental stage “F” (according to Demirjian index) premolars are indicators of the optimal time for orthodontic treatment. We found a significant correlation (R = 0.871, p <0.001) between CVM and Demirjian's index. Conclusions: The correlation shown in this study will allow clinicians to use mandibular first premolar as an adjunctive tool to assess adolescent growth spurt, combined with the evaluation of the cervical vertebrae. The results also show the usefulness of the assessment of the development of dental status as a simple diagnostic test to determine the biological age of the population

scholarly journals Face Mask Therapy Effects in Two Skeletal Maturation Groups of Female Subjects with Skeletal Class III Malocclusions

2009 ◽  
Vol 79 (5) ◽  
pp. 842-848 ◽  
Author(s):  
İbrahim Yavuz ◽  
Koray Halıcıoğlu ◽  
İsmail Ceylan
Keyword(s):  
Young Adult ◽  
Face Mask ◽  
T Test ◽  
Adolescent And Young Adult ◽  
Skeletal Maturation ◽  
Class Iii ◽  
Older Children ◽  
Skeletal Class ◽  
Female Patients ◽  
Female Subjects

Abstract Objective: To examine the effects of face mask therapy in adolescent and young adult female subjects with skeletal Class III malocclusion characterized by maxillary retrognathism. Materials and Methods: The material consisted of pretreatment and posttreatment lateral cephalometric radiographs of 28 subjects with Class III malocclusions treated with a face mask. Twenty-eight patients age 10 to 16 years were divided into two groups: the adolescent group (15 female patients) and the young adult group (13 female patients). Within group and between group comparisons were made by paired t-test and Student's t-test, respectively. Results: Forward displacement of the maxilla and clockwise rotation of the mandible occurred in both the adolescent and young adult groups. Maxillary-mandibular relationship exhibited an increase in the ANB angle and Wits appraisal, and the soft-tissue changes resulted in a more convex profile. The maxillary incisors moved forward while the mandibular incisors moved backward. Conclusions: Face mask therapy improves skeletal Class III malocclusions by a combination of skeletal and dental changes. Although early treatment may be most effective, face mask treatment can provide a viable option for older children as well.

Effect of Adaptive Compression and Fast-Acting WDRC Strategies on Sentence Recognition in Noise in Mandarin-Speaking Pediatric Hearing Aid Users

2018 ◽  
Vol 29 (04) ◽  
pp. 273-278
Author(s):  
Haihong Liu ◽  
Yuanhu Liu ◽  
Ying Li ◽  
Xin Jin ◽  
Jing Li ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Dynamic Range ◽  
Hearing Aid ◽  
Hearing Threshold ◽  
T Test ◽  
Sentence Recognition ◽  
Repeated Measures Design ◽  
Paired Samples ◽  
Adaptive Compression ◽  
Fast Acting

AbstractWide dynamic range compression (WDRC) has been widely used in hearing aid technology. However, several reports indicate that WDRC may improve audibility at the expense of speech intelligibility. As such, a modified amplification compression scheme, named adaptive compression, was developed. However, the effect of compression strategies on speech perception in pediatric hearing aid users has not been clearly reported.The purpose of the present study was to investigate the effect of adaptive compression and fast-acting WDRC processing strategies on sentence recognition in noise with Mandarin, pediatric hearing aid users.This study was set up using a double-blind, within-subject, repeated-measures design.Twenty-six children who spoke Mandarin Chinese as their primary language and had bilateral sensorineural hearing loss participated in the study.Sentence recognition in noise was evaluated in behind-the-ear technology with both adaptive compression processing and fast-acting WDRC processing and was selected randomly for each child. Percent correct sentence recognition in noise with fast-acting WDRC and adaptive compression was collected from each participant. Correlation analysis was performed to examine the effect of gender, age at assessment, and hearing threshold of the better ear on signal-to-noise ratio, and a paired-samples t test was employed to compare the performance of the adaptive compression strategy and fast-acting WDRC processing.The mean percentage correct of sentence recognition in noise with behind-the-ear technology with fast-acting WDRC and adaptive compression processing were 62.24% and 68.71%, respectively. The paired-samples t test showed that the performance of the adaptive compression strategy was significantly better than the fast-acting WDRC processing (t = 3.190, p = 0.004).Compared with the fast-acting WDRC, adaptive compression provided better sentence recognition in noise for Mandarin pediatric hearing aid users.

PENGARUH PUBLIKASI LAPORAN KEUANGAN TERHADAP VOLUME PERDAGANGAN SAHAM DI BURSA EFEK INDONESIA

2017 ◽  
Vol 13 (1) ◽  
pp. 19
Author(s):  
Mikha Gorbyanto Nuari ◽  
Astuti Yuli Setyani
Keyword(s):  
Capital Market ◽  
Investment Decision ◽  
Rapid Development ◽  
Financial Statements ◽  
T Test ◽  
Stock Trading ◽  
Event Window ◽  
Paired Samples ◽  
Significant Difference ◽  
High Investment

Capital market in Indonesia today is experiencing rapid development, the growth contribute to the high investment that can be seen from the number of shares traded by investors. Financial statements are one of many source which investor used as a source of consideration to make investment decision. The purpose of this study was to examine whether there is a difference between the volume of stock trading before the publication of financial statements and after the publication of financial statements in 20 days event window. The research sample is a group companies that included in the index stock LQ 45 in 2016. Hypothesis testing using a paired sample t-test. The results of this test showed no significant difference between the volume of trade before publication of the financial statements and after the publication of the financial statements.Key terms: financial statements, volume of stock trading, capital market, investmentPasar modal di Indonesia dewasa ini mengalami perkembangan yang pesat, hal tersebut berdampak pada tingginya investasi dilihat dari jumlah saham yang ditransaksikan oleh investor. Laporan keuangan merupakan salah satu sumber informasi bagi investor sebagai bahan pertimbangan dalam melakukan keputusan investasi. Tujuan dari penelitian ini adalah untuk menguji apakah ada perbedaan antara volume perdagangan saham sebelum publikasi laporan keuangan dengan sesudah publikasi laporan keuangan pada event window 20 hari. Sampel penelitian merupakan perusahaan yang masuk dalam kelompok indeks saham LQ 45 pada tahun 2016. Pengujian hipotesis dilakukan dengan menggunakan uji paired samples t-test. Hasil dari pengujian ini menunjukkan tidak adaperbedaan yang signifikan antara volume perdagangan sebelum publikasi laporan keuangan dengan sesudah publikasi laporan keuangan.Kata Kunci: laporan keuangan, volume perdagangan saham, pasar modal, investasi.

Abstract TMP2: Is Eptifibatide a Viable and Safe Option as Stand-alone Therapy for Acute Ischemic Stroke Patients?

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Daniel Korya ◽  
Mohammad Moussavi ◽  
Siddhart Mehta ◽  
Jaskiran Brar ◽  
Harina Chahal ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Time Window ◽  
T Test ◽  
Bleeding Complications ◽  
Stroke Severity ◽  
Paired Samples ◽  
Group A ◽  
Group B ◽  
Iv Tpa

Introduction: The list of contraindications for IV tPA in acute ischemic stroke (AIS) is often too long and may lead to physicians opting to offer no treatment for certain strokes. An alternative treatment is proposed in cases where IV tPA is not an option due to time-window restrictions or contraindications. We compared the stroke severity, outcomes and safety of IV eptifibatide when compared with IV tPA. Methods: Patients who presented to a community based university affiliated comprehensive stroke center from 2012-15 with AIS over a two-year period were included in the study. Those who qualified for IV tPA, and were treated, were compared with patients who only received IV eptifibatide. The initial NIH Stroke Score (NIHSS), 24-hour NIHSS, discharge NIHSS (DCNIHSS), discharge mRS (DCmRS) and symptomatic ICH rates were compared with a paired samples t-test to determine significance of difference between the means. SPSS Version 22 was used for all data analysis. Results: A total of 864 patients presented with AIS in the evaluated time period and of those 166 met study criteria. There were 119 patients who received IV tPA alone (group A) and 47 patients received eptifibatide (group B). The mean initial NIHSS, 24-NIHSS, DCNIHSS, DCmRS and percent bleeding complications for group A were: 11.2, 10.8, 8.6, 3.1 and 6%. For group B the figures were: 6.7, 4.8, 4.3, 1.7 and 0%, respectively. Group A was compared with group B in a paired samples T-test and yielded -4.3, -6.2, -6, -1.5 (p=.0001 to .04) for initial, 24-hour, discharge NIHSS and discharge mRS, respectively. The difference between initial and discharge NIHSS between the two groups was -2.7 (p=.009), favoring IV tPA. Conclusion: In patients who are either outside the time-window or with contraindications to IV tPA, eptifibatide may be a safe alternative and appears to be efficacious. None of the patients who were started on eptifibatide had bleeding complications and they had a statistically significant improvement in their level of disability and stroke severity at discharge. A limitation of this study is that patients in group A had significantly worse initial NIHSS compared with group B. To better evaluate the efficacy of eptifibatide, a larger, prospective study should be initiated.

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