scholarly journals Accuracy assessment of dental age estimation with the Willems, Demirjian and Nolla methods in Spanish children. Comparative cross-sectional study.

2020 ◽  
Author(s):  
Marta Macarena Paz Cortés ◽  
Rosa Rojo ◽  
Esther Alia García ◽  
Maria Rosa Mourelle Martínez
Keyword(s):  
Accuracy Assessment ◽  
Statistical Tests ◽  
Age Groups ◽  
Wilcoxon Test ◽  
Chronological Age ◽  
Dental Age ◽  
Paired Data ◽  
Cross Sectional ◽  
Demirjian Method ◽  
Willems Method

Abstract Background: The objective of this study was to evaluate and compare the validity and accuracy of the Willems, Demirjian and Nolla methods in predicting chronological age in a Spanish ethnicity population. Methods: A sample of 604 orthopantomographs of Spanish children aged 4 to 14 years was evaluated by two independent evaluators. Descriptive statistics were applied to calculate the chronological age and dental age, presenting the mean and standard deviation. The difference between dental age and chronological age was calculated for each method. A positive result indicated an overestimation and a negative figure indicated an underestimation. The Wilcoxon test for paired data and Spearman's correlation coefficient were applied by age groups and gender to compare the chronological age and dental age of each method (that of Willems, Demirjian and Nolla). Statistical tests were performed at a 95% confidence level. Results: The interexaminer agreement was 0.98 (p = 0.00), and the intraexaminer agreement was 0.99 (p = 0.00). The Willems method significantly overestimated the age of boys (0.35 years (0.93)) and girls (0.17 years (0.88)). The Demirjian method significantly overestimated the age of boys (0.68 years (0.95)) and girls (0.73 years (0.94)). The Nolla method significantly underestimated age in boys (0.44 years (0.93)) and girls (0.82 years (0.98)). Conclusions: In the Spanish population, the use of the Demirjian method for legal and medical purposes is frequent. This study reveals that the Willems method is more appropriate due to its greater precision in estimating dental age.

Dental Age Assessment of 8.5 to 17 Year-old Saudi Children Using Demirjian's Method

2008 ◽  
Vol 9 (3) ◽  
pp. 64-71 ◽  
Author(s):  
Suiaiman Al-Emran
Keyword(s):  
Age Groups ◽  
Chronological Age ◽  
Age Group ◽  
Dental Age ◽  
French Canadian ◽  
Age Assessment ◽  
Standard Values ◽  
Mandibular Teeth ◽  
Demirjian’S Method ◽  
Demirjian Method

Abstract Aim The aim of this study was to assess the dental age in Saudi children aged 8.5 to 17 years using the Demirjian method. Methods and Materials Four hundred ninety panoramic radiographs of boys and girls were reviewed retrospectively. All children were placed in the age group closest to their chronological age. The dental age was scored on all seven left mandibular teeth by one examiner. Results Both boys and girls in age groups nine to 14 years showed advanced dental age compared to their chronological age which was found to be statistically significant except in age groups nine and 13 years. Saudi boys were 0.3 years and Saudi girls 0.4 years ahead, on average, of French-Canadian children as analyzed by the Demirjian method. Conclusion The standard values for French-Canadian children provided by Demirjian vary slightly for application to Saudi children. As a result, new graphs and tables were produced to convert these maturity scores, calculated by the Demirjian method, to the dental age for Saudi children. Citation Al-Emran S. Dental Age Assessment of 8.5 to 17 Year-old Saudi Children Using Demirjian's Method. J Contemp Dent Pract 2008 March; (9)3:064-071.

Dental Age Estimation According to European Formula and Willems Method: Comparison Between Children With and Without Cleft Lip and Palate

2021 ◽  
Vol 58 (5) ◽  
pp. 612-618
Author(s):  
Evgenija Markovic ◽  
Nemanja Marinkovic ◽  
Ksenija Zelic ◽  
Petar Milovanovic ◽  
Marija Djuric ◽  
...  
Keyword(s):  
Age Estimation ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Chronological Age ◽  
Control Group ◽  
Dental Age ◽  
Dental Age Estimation ◽  
Cross Sectional ◽  
Significant Difference ◽  
Willems Method

Objective: To assess dental age and deviations of dental from chronological age according to the Willems and Cameriere methods (European formula) in patients with cleft lip and/or cleft palate (CL/P) and compare it with control group. Design: Retrospective cross-sectional study. Setting: Clinic of Orthodontics. Participants: Sixty-nine patients with CL/P between 6 and 15 years of age (55 with unilateral and 14 with bilateral CL/P) with 148 panoramic radiographs. The same number of radiographs was examined in the age-matched control group. Main Outcome Measures: Estimation and comparison of dental age and differences of dental from chronological age in relation to the type of cleft, sex, and age in the group of patients with and without CL/P according to Willems and Cameriere method. Results: No significant intersex and intergroup differences were found in deviations of dental from chronological age according to Cameriere method ( P > .05). Significant difference in deviation of dental from chronological age was found between the patients with and without CL/P according to Willems method ( P < .001). Conclusion: Cameriere European formula for dental age estimation, which is not influenced by sex and tooth morphology, showed similar dental development of children with and without CL/P. However, Willems method detected that deviation of dental from chronological age significantly differed between children with and without clefts.

scholarly journals THE DIFFERENCES OF CHRONOLOGICAL AGE WITH DENTAL AGE BASED ON THE ALQAHTANI METHODE AGED 6-12 YEARS

2021 ◽  
Vol 1 (Volume 1 No 1) ◽  
pp. 60-70
Author(s):  
Mutiara Sukma Suntana ◽  
Ira Artilia ◽  
Lucy Pertiwi
Keyword(s):  
Wilcoxon Test ◽  
Chronological Age ◽  
Sufficient Information ◽  
Dental Age ◽  
Research Subjects ◽  
Cross Sectional ◽  
Panoramic Radiographs ◽  
Female Patients ◽  
Significant Difference ◽  
Male Patients

The chronological age of a person can not provide sufficient information. We can use the dental age in panoramic radiographs to know the growth process appropriately compared to The London Atlas of the Alqahtani method. Children aged 6-12 years have various factors that can affect the velocity in tooth growth and development, such as male and female. This study aims to determine the chronological patient's age differences with dental age based on the Alqahtani method on a panoramic radiograph at Unjani Dental and Oral Education Hospital. This type of research is Analytical Observational with the Cross-Sectional Study method. Research subjects were obtained from all medical records panoramic radiographs with 72 panoramic radiographs aged 6-12 years, divided into 36 male patients and 36 female patients. Differences in chronological age with dental age were analyzed statistically using the Mann-Whitney test and Wilcoxon test, previously tested for the normality using Kolmogorov- Smirnov. The results showed a significant difference between chronological age and dental age by gender and in all patients at the Unjani Dental and Oral Education Hospital (p<0,05). Based on the analysis of the data obtained, all patients in RSGMP Unjani aged 6-12 years have different dental developmental growth processes, and the dental development growth of female patients was faster than male patients. It can be concluded that the dental age is not always comparable with chronological age because of various factors such as gender, genetics and environment, which can affect the dental age.

scholarly journals Age Estimation Using Schour-Massler Method Compared to the Demirjian Method

2019 ◽  
Vol 22 (1) ◽  
pp. 15-19
Author(s):  
Trelia Boel ◽  
Tiara Ayustin Bahri
Keyword(s):  
Age Estimation ◽  
Wilcoxon Test ◽  
Permanent Teeth ◽  
Chronological Age ◽  
P Value ◽  
Dental Age ◽  
Cross Sectional ◽  
Significant Difference ◽  
Cross Sectional Design ◽  
North Sumatra

Schour-Massler and Demirjian are methods used to estimate chronological age in dental radiographs by looking at the development of permanent teeth and the maturity of the dental age. Chronological age is based on date of birth. Dental age is the age based on the maturity of the teeth. Both of these methods have been widely used in previous studies, but have never been compared. The purpose of this study was to determine whether there are differences in age estimation using the Schour-Massler and Demirjian methods. This study was an observational analytic study with a cross sectional design. The research sample was 46 patients who came to USU General Hospital at the age of 10-16 years. This research was consist at the Radiology Unit of the Faculty of Dentistry, University of North Sumatra. The results of this study indicate the p value of the Wilcoxon test results with the p value for Schour-Massler p=0.090 > 0.05 and Demirjian p=1,000. Both p values> 0.05, there is no significant difference in assessing the estimated age using both methods, so Ha is accepted. In conclusion, the Schour-Massler and Demirjian methods provide estimates of age that are close to actual age, so there is no significant difference between the two methods.

scholarly journals Differences Chronological Age and Dental Age Using Demirjian Method based upon a Study Radiology using Radiography Panoramic at the RSGM Unhas

2016 ◽  
Vol 1 (2) ◽  
pp. 242
Author(s):  
Barunawaty Yunus ◽  
Yulia Wardhani
Keyword(s):  
Growth And Development ◽  
Panoramic Radiography ◽  
Treatment Plan ◽  
Human Growth ◽  
Wilcoxon Test ◽  
Chronological Age ◽  
Sufficient Information ◽  
Dental Age ◽  
Significant Difference ◽  
Demirjian Method

<strong>Background.</strong>Choronological age is assessed by the date, month, and year of birth. Several researches suggested that Chronological age may not be able to provide sufficient information regarding on human growth precisely. Chronological age, on the other hand, could not be used to assess  Maturity development rate of a patient, so it is necessary to assess the dental age. Dental age is age assessment method  by measuring human growth and development. Age estimation has important role in health field, Particularly  in dentistry as it will be beneficial in making appropriate diagnosis, Treatment plan, and prognosis. Tooth eruption estimation according to Demirjian Method conducted by assessing growth and development process of tooth using panoramic  radiography. <strong>Purpose</strong><strong>. </strong>Determine the difference between Chronological Age and Dental Age Using Demirjian Method Based on Radiology Analysis of Panoramic Radiography. <strong>Method.</strong> This study was an observational analytic using Cross-sectional study, all data are observed once at the time. In this study,  the amount of sample reviewed were 30 samples, consisted of 4 – 9 years old children. Panoramic radiography were collected based on target population which fulfill Sample Criteria from reconciled patient of radiology department RSGM Unhas. The results were obtained by estimating the score of  dental age using Demirjian Method. After that, the Dental age and chronological age were analayzed to obtain the mean difference. <strong>Result</strong><strong>. </strong>Based on wilcoxon test, mean value was obtain p:0.011 (p&lt;0.05), this result shows that there is significant difference between chronological age and dental age. <strong>Conclusion</strong><strong>.</strong>Chronological age and dental age can be assessed by reviewing the panoramic radiography using Demirjian Method

scholarly journals Dental Maturity in Saudi Children Using the Demirjian Method: A Comparative Study and New Prediction Models

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Ziad D. Baghdadi
Keyword(s):  
Prediction Models ◽  
Age Groups ◽  
Total Sample ◽  
Chronological Age ◽  
Dental Age ◽  
French Canadian ◽  
Dental Maturation ◽  
Canadian Population ◽  
Significant Difference ◽  
Demirjian Method

A sample of 422 dental panoramic radiographs from individuals of known age (from 4 to 14 yrs), sex (males: 217, females: 205), and ethnicity (Saudi) was collected. A dental maturation score for each individual was calculated using the Demirjian method. Age was then estimated using the original Demirjian curves and tables based on French-Canadian population and population-specific curves and tables for Arab (Saudi and Kuwaiti) and European (Belgian) populations. The differences between dental age and chronological age were analyzed and compared using paired t-tests, one-way ANOVA test, and a post hoc Scheffé’s test. The Demirjian method utilizing French-Canadian standards presented significant difference between dental age and chronological age for the total sample and in the vast majority of age groups in both sexes. The mean overestimation of age was about 10 months (P<0.05). The tables designed specifically for Arab populations had a significantly lower error than the tables designed for French-Canadian and Belgian populations. The latter had the largest error in age predication. New age prediction models and maturation scores for Saudi population were developed based on the Demirjian method using multinomial functions.

scholarly journals Deksripsi kesesuaian usia kronologis dan usia dentalis melalui estimasi pertumbuhan ujung akar gigi premolar

2020 ◽  
Vol 4 (1) ◽  
pp. 27
Author(s):  
Inne Suherna Sasmita ◽  
Lusi Epsilawati ◽  
Fadhlil Ulum Abdul Rahman
Keyword(s):  
Root Growth ◽  
Root Formation ◽  
Age Groups ◽  
Root Apex ◽  
Panoramic Radiograph ◽  
Chronological Age ◽  
Tooth Root ◽  
Dental Age ◽  
Cross Sectional ◽  
High Degree

Objectives: The purpose of this study was to find out the description of chronological age and dental age suitability through estimation of root growth of maxillary and mandibular premolar teeth. Material and Methods: This study was a descriptive study with cross-sectional approach performed on the maxillary and mandibular first and second premolars. Data was taken from 50 panoramic radiographs contained in the 2015-2016 RSGM Unpad archives. Analyzes were performed based on age predictions from the Demirjian table compared to chronological ages in several age groups. The data is then presented in tabular form. Results: This study shows that there is a high degree of concordance between chronological age and dental age through premolars 1 and 2, both upper and lower jaws of the Demirjian table in the initial phase of tooth root formation at 8 years chronological age and at the final phase of root apex closure at 12-13 years chronological age through the assessment of panoramic radiograph.   Conclusion: Chronological age and dental age depend on the precise assessment of root growth of premolar 1 and 2 teeth in the maxillary and mandibular regions having a high degree of suitability in the early and final phases of tooth root formation which are seen more radiographically.  

Estimation of Dental Age by Demirjian and Willems Method in a Tertiary Care Hospital of Nepal

2021 ◽  
Vol 11 (1) ◽  
pp. 40-45
Author(s):  
Sumita Upadhyay ◽  
Sijan Paudyal ◽  
Prashant Khatiwada ◽  
Bibardha Khanal ◽  
Rasna Shrestha
Keyword(s):  
Age Estimation ◽  
Pearson Correlation ◽  
Tertiary Care ◽  
Pediatric Dentistry ◽  
Chronological Age ◽  
Strong Positive Correlation ◽  
Care Hospital ◽  
Dental Age ◽  
Demirjian Method ◽  
Willems Method

Introduction: Dental age estimation using orthopantomogram is very useful in pediatric dentistry, orthodontics in clinical diagnosis and treatment planning and also has forensic application. Demirjian method is widely used for age estimation and Willems method has been suggested to be accurate than Demirjian in various populations. To estimate the dental age of children in a specific population of Nepal by Demirjian and Willems method, compare them with the chronological age and assess their applicability. Materials and Method: Digital orthopantomograms of 5 to 14 years of children were used to estimate the dental age by Demirjian’s 7- teeth method and Willems method. Descriptive statistics was used and mean with standard deviation was calculated for gender and age of the samples. Paired t-test was used for comparison of chronological age with dental age. P < 0.05 was considered as statistically significant.Pearson correlation was used to assess the correlation between chronological and dental age in both the genders. Result: By Demirjian method, there was an underestimation of 0.276 years in males and 0.194 in females and by Willems method, 0.652 in males and 0.847 in females which were statistically significant. There was an underestimation of dental age in all the age groups except in the age group of 5,7 and 14 for Demirjian age which was statistically nonsignificant. Pearson correlation demonstrated strong positive correlation between chronological age and dental age. Conclusion: The underestimation of dental age was more by Willems method as compared to Demirjian method. There was a strong positive relationship between chronological age and dental age in both the genders. Demirjian’s 7- teeth method was more applicable as compared to Willems method when tested in selected Nepalese children population

scholarly journals Estimation of the Chronological Age Through the Methods of Demirjian and Ubelaker in Peruvian Children

2019 ◽  
Vol 21 (2) ◽  
pp. 95-103
Author(s):  
Anders L. Pachas Vásquez DDS ◽  
Daniel G. Suárez Ponce DDS, MSc, PhD ◽  
Teresa A. Evaristo Chiyong DDS, MSc, PhD
Keyword(s):  
Estimation Method ◽  
Wilcoxon Test ◽  
Chronological Age ◽  
Test Results ◽  
Dental Age ◽  
Cross Sectional ◽  
Correlation Tests ◽  
The Difference ◽  
Cross Sectional Design ◽  
Level Of Significance

Objective: To determine the most effective dental age estimation method, Demirjian y Ubelaker, for estimating the chronological age in patients from 4 to 13 years of the National Institute of Child Health-Lima Peru. Materials and methods: Cross-sectional design with a sample consisting of 465 panoramic radiographs, 229 of male (49.2%) and 236 of female (50.8%). The estimated age was made using the protocol established in each method. The chronological age was established through the difference between the date of radiographic capture and the date of birth. The precision and accuracy of each method was established. The inferential analysis was performed with a level of significance of 5% through the Spearman correlation tests, Wilcoxon test. Results: It was proved that the Ubelaker method had 270 erroneous or mismatched cases and 195 coincidences while the Demirjian method had 360 erroneous cases and 105 coincidences between the estimated chronological age and dental age, finding significant differences in the estimation in each of the methods p=0.001 and p <0.001 respectively. The accuracy obtained with Ubelaker was 0,112 and with Demirjian 1,039.

scholarly journals Differences chronological age and dental age using Demirjian method based upon a study radiology using radiography panoramic at the Dental Hospital Hasanuddin University

2016 ◽  
Vol 1 (2) ◽  
pp. 103
Author(s):  
Barunawaty Yunus ◽  
Yulia Wardhani
Keyword(s):  
Growth And Development ◽  
Panoramic Radiography ◽  
Treatment Plan ◽  
Human Growth ◽  
Wilcoxon Test ◽  
Chronological Age ◽  
Sufficient Information ◽  
Dental Age ◽  
Significant Difference ◽  
Demirjian Method

Background.Choronological age is assessed by the date, month, and year of birth. Several researches suggested that Chronological age may not be able to provide sufficient information regarding on human growth precisely. Chronological age, on the other hand, could not be used to assess  Maturity development rate of a patient, so it is necessary to assess the dental age. Dental age is age assessment method  by measuring human growth and development. Age estimation has important role in health field, Particularly  in dentistry as it will be beneficial in making appropriate diagnosis, Treatment plan, and prognosis. Tooth eruption estimation according to Demirjian Method conducted by assessing growth and development process of tooth using panoramic  radiography. Purpose. Determine the difference between Chronological Age and Dental Age Using Demirjian Method Based on Radiology Analysis of Panoramic Radiography. Method. This study was an observational analytic using Cross-sectional study, all data are observed once at the time. In this study,  the amount of sample reviewed were 30 samples, consisted of 4 – 9 years old children. Panoramic radiography were collected based on target population which fulfill Sample Criteria from reconciled patient of radiology department RSGM Unhas. The results were obtained by estimating the score of  dental age using Demirjian Method. After that, the Dental age and chronological age were analayzed to obtain the mean difference. Result. Based on wilcoxon test, mean value was obtain p:0.011 (p<0.05), this result shows that there is significant difference between chronological age and dental age. Conclusion.Chronological age and dental age can be assessed by reviewing the panoramic radiography using Demirjian Method 

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