Academic literature on the topic 'Demirjian'
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Journal articles on the topic "Demirjian"
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Upadhyay, Sumita, Sijan Paudyal, Prashant Khatiwada, Bibardha Khanal, and Rasna Shrestha. "Estimation of Dental Age by Demirjian and Willems Method in a Tertiary Care Hospital of Nepal." Orthodontic Journal of Nepal 11, no. 1 (2021): 40–45. http://dx.doi.org/10.3126/ojn.v11i1.39084.
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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
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Ginzelová, Kristina, Taťjana Dostálová, Hana Eliášová, Alex Vinšů, Antonín Buček, and Michaela Bučková. "Using Dental Age to Estimate Chronological Age in Czech Children Aged 3–18 Years." Prague Medical Report 116, no. 2 (2015): 139–54. http://dx.doi.org/10.14712/23362936.2015.52.
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The Demirjian methods to determine dental age are based on analysis of orthopantograms. The dental age estimation is based on establishing the tooth development stages. The purpose of this study was to assess the accuracy of estimation of dental age by Demirjian in the use of all of his four methods. 505 Czech healthy boys and girls aged 3 to 18 years were examined radiographically at the Department of Stomatology, Second Faculty of Medicine, Charles University in Prague. It was mentioned the factors of underlying diseases influence the accuracy of the dental age estimation. For statistical evaluation, descriptive statistics was used to compare deviations of the mean values of chronological and dental age in each age group. The resulting difference between dental age and chronological age is not significant in both genders only when using both Demirjian 7-teeth methods of 1973 and 1976. Therefore these may be most appropriately used for forensic age estimation. There are shown standard deviation differences in different countries. Demirjian’s original 7-teeth method from 1973 and Demirjian’s revised 4-teeth method from 1976 appear to be the best methods for calculating the dental age of healthy Czech children of both genders.
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Upadhyay, Sumita, Sijan Poudyal, Prashant Khatiwada, Bibardha Khanal, and Rasna Shrestha. "Estimation of Dental Age by Demirjian and Willems Method In a Tertiary Care Hospital of Nepal." Orthodontic Journal of Nepal 11, no. 2 (2021): 57–62. http://dx.doi.org/10.3126/ojn.v11i2.43278.
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Introduction: Dental age estimation using orthopantomogram is very useful in pediatric dentistry, orthodontics inclinical diagnosis and treatment planning and also has forensic application. The objectives of this study were 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
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Al-Emran, Suiaiman. "Dental Age Assessment of 8.5 to 17 Year-old Saudi Children Using Demirjian's Method." Journal of Contemporary Dental Practice 9, no. 3 (2008): 64–71. http://dx.doi.org/10.5005/jcdp-9-3-64.
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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.
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Mónico, Lisete S., Luís F. Tomás, Inmaculada Tomás, Purificación Varela-Patiño, and Benjamin Martin-Biedma. "Adapting Demirjian Standards for Portuguese and Spanish Children and Adolescents." International Journal of Environmental Research and Public Health 19, no. 19 (2022): 12706. http://dx.doi.org/10.3390/ijerph191912706.
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Estimation of children’s chronological age is highly important in human and forensic sciences. The Demirjian method has been reported as accurate for this purpose. The literature review shows some evidence that the accuracy of estimating chronological age via the Demirjian standards is not a straightforward process. The objective of this research is to analyze the reliability of the Demirjian standards in Portuguese and Spanish children and adolescents and adapt it to include sex and group age as contingent factors. Methods: Orthopantomographs of 574 Portuguese and Spanish male and female children and adolescents were employed to test the reliability of the Demirjian method. After testing for inter-rater consistency and age estimation using the Demirjian standards, multiple regression analysis was performed controlling for sex and age group. Results: The Demirjian standards overestimated chronological age for both sexes, mainly for females. Through the development of regression functions, more detailed dental age estimation was performed. The predictive capacities of the Demirjian method and the significant teeth varied as a function of children’s age. The Demirjian global standard predicted over 65% of the variance of the chronological age. Taking a tooth-by-tooth approach, the predictive ability increased by over 70%. Conclusions: The accuracy of estimating chronological age via the Demirjian method is not as reliable as it might appear, judging from the results found according to age group and according to sex crossed with age group.
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Sosiawan, Agung, An'nisaa Chusida, Beshlina Fitri Widayanti Roosyanto Prakoeswa, et al. "Estimation of children’s age based on dentition via panoramic radiography in Surabaya, Indonesia." Dental Journal (Majalah Kedokteran Gigi) 55, no. 3 (2022): 161–64. http://dx.doi.org/10.20473/j.djmkg.v55.i3.p161-164.
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Background: Age may be estimated using tooth eruption sequence and/or calcification stage. Because many factors may affect the time of eruption, the tooth calcification stage shows higher accuracy than the time of tooth eruption. Demirjian’s and Willems’ methods have been most commonly used for dental age estimation. Both Willems and Demirjian use the calcification stage as an indicator. Studies comparing these methods have shown varied results, as they have been performed on different populations. Purpose: This paper aims to analyse the estimation of children's age based on dentition via panoramic radiography in Surabaya, Indonesia. Methods: This is a cross-sectional study using a purposive sampling method. One hundred digital panoramic radiographs of children between 6 and 15 years that match the inclusion criteria from the Airlangga University dental hospital in Surabaya, Indonesia were evaluated. One researcher analysed estimated dental age (EDA) three times in a one-week time-lapse using Demirjian’s and Willems’ methods. Statistical analysis was carried out using a Paired t-test and Wilcoxon signed-rank test. EDA was calculated using both Demirjian’s and Willems’ methods. Results: The mean chronological age (CA) was 10.57 ± 2.70 for males and 10.73 ± 2.84 for females. The mean difference between CA and EDA using the Demirjian and Willems methods was -0.57 ± 1.17 and 0.10 ± 0.96 for males and 0.58 ± 1.40 and 0.44 ± 0.94 for females. Conclusion: The results suggest that Willems’ method is more precise than Demirjian’s method in males and females and more suitable for children in Surabaya, Indonesia.
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Ramos Zamora, Álvaro Rafael, Wender Williams Condori Quispe, and Isabel Del Rosario Ayca Castro. "GRADO DE CONFIABILIDAD PARA HALLAR LA EDAD CRONOLÓGICA Y EDAD DENTAL MEDIANTE LOS ANÁLISIS DE NOLLA Y DEMIRJIAN EN LOS ALUMNOS ENTRE 4 A 12 AÑOS DE LA I.E. NUESTRO SEÑOR DE LOCUMBA DE LA REGIÓN TACNA, 2018." Revista Odontológica Basadrina 3, no. 1 (2019): 25–29. http://dx.doi.org/10.33326/26644649.2019.3.1.822.
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MATERIALES Y MÉTODOS: Se realizó un estudio descriptivo, transversal y observacional, en el que se evaluaron 49 radiografías panorámicas, 23 correspondientes al sexo femenino, y 26 correspondientes al sexo masculino, de un grupo de niños entre 4 a 12 años de la I.E. Nuestro Señor de Locumba en el Distrito de Locumba, Provincia Jorge Basadre Grohmann, Región Tacna en el año 2018. Se determinó la edad dental de cada integrante de la muestra según los análisis de Nolla y Demirjian, posteriormente se compararon los resultados de ambos análisis. RESULTADOS: El valor predictivo que se determinó mediante los análisis de Nolla y Demirjian definió un mayor grado de eficacia en el análisis de Demirjian para determinar la edad dental. CONCLUSIONES: Se encontró diferencias estadísticamente significativas en ambos métodos, concluyendo que el método de Demirjian es más preciso que el método de Nolla para la estimación de la edad dental.
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Yaşar, Zehtiye Füsun, Erhan Büken, and Mustafa Agah Tekindal. "Demirjian Metodu Farklı Ülkelerde Yaş Tayininde Kullanılabilir mi?" Bulletin of Legal Medicine 21, no. 3 (2016): 144–52. http://dx.doi.org/10.17986/blm.2016323747.
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Amaç: Bu makalenin amacı, diş gelişimini değerlendirerek diş yaşı hesaplamakta kullanılan Demirjian metodunun güvenilirliğini, kullanılabilirliğini farklı ülke verilerinden yararlanarak tartışmaktır.Gereç ve Yöntem: Farklı ülkelerde veya aynı ülkenin farklı bölgelerinde 7-11 yaş aralığında, Demirjian metoduyla diş yaşı tayini yapılmış 22 çalışmanın verileri irdelendi. Çalışmalarda içerilme ölçütü; sağlıklı çocuklar üzerinde yapılmış olması, panoramik film kullanılması, sol alt mandibuler yedi dişin incelenmiş olması olarak belirlendi. 7-11 yaş arasındaki kız ve erkek çocuklara ait veriler, kronolojik yaş ile Demirjian metoduyla belirlenen diş yaşlarına ilişkin veriler tablo halinde düzenlenerek diş yaşı ile kronolojik yaş arasındaki farklılıklar değerlendirildi. Veri analizinde faktöriyel düzende varyans analizi ardından çoklu karşılaştırmalar için Bonferroni testi kullanıldı. Birinci tip hata 0,05’te sabit tutuldu (α=0,05).Bulgular: Değerlendirmeler sonucunda, Demirjian metoduyla belirlenen diş yaşı ile kronolojik yaş açısından hem toplumdan topluma hem de aynı toplumum farklı bölgelerinde yaşayan çocuklar arasında fark olduğu belirlendi. Hollanda, Türkiye, Sudan, Çin, Sırbistan, İtalya, Pakistan, Yeni Zelanda, Bosna Hersek, Malezya ve Hindistan’dan alınan örneklerde Demirjian yönteminin kullanılabilirliği açısından negatif veya pozitif farklar tespit edildi. Romanya, İran, Hindistan’da yaşayan Belçikalı çocuklar ile incelenen diğer toplumlara ait sonuçlar arasındaki farkın ise anlamlı olmadığı saptandı.Sonuç: Çocuklarda büyüme ve gelişim; kalıtım, cinsiyet, hormonlar, beslenme, sosyo–kültürel ve çevresel etmenler, geçirilen hastalıklar gibi nedenlerle bireyden bireye ve toplumdan topluma farklılıklar gösterir. Dişlerin gelişimi de benzer faktörlerin etkisi altındadır ve bu nedenle Demirjian tarafından Fransız asıllı Kanadalı (French-Canadian) çocukların diş yaşını belirlemek amacıyla geliştirilen skorlama sistemi farklı toplumlara uygulandığında kronolojik yaş ile diş yaşı arasında önemli farklılıklar görülebilmektedir. Bu farklılığın giderilmesi için metodun, toplumsal özelliklere göre modifiye edilerek kullanılması gerekmektedir.
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Molina, Magdalena, Verónica Verdugo, Valeria Romero, and Arturo Fuentes. "Estimation of dental age in panoramic radiographs in children and adoloescents from 7-17 years through Demirjian method, Cuenca – Ecuador." International Journal of Medical and Surgical Sciences 4, no. 4 (2018): 1259–65. http://dx.doi.org/10.32457/ijmss.2017.032.
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Age is an indicator of dental somatic maturation, of clinical importance in dentistry for planning the treatment of growing patients. The Demirjian method is the most widely disseminated to estimate dental age. With this method, numerous studies have been carried out in different ethnic groups, analyzing European, Asian and American children, among others. These results suggest possible differences in dental maturation patterns between different populations. The aim of the present study was to correlate the dental age, using the Demirjian method, with the chronological age according to gender in a group of children who attended the Radiological Center “Innova” located in Cuenca-Ecuador in the period 2012 - 2014, This study was descriptive, retrospective and analytical, in which a sample stratified by age and gender was selected, including 362 radiographs, of which 205 are female and 157 male. An inter-class correlation coefficient was obtained, as a measure of correlation between dental and chronological age, of 0.830 in the female gender and 0.801 in the male gender. In general, Demirjian’s method tended to underestimate dental age in girls and boys in a similar way. In conclusion, the results obtained in the present work do not coincide with many places in the world, that is, the dental age in this group was slightly lower in both girls and boys than the original Franco - Canadian sample. The obtained range of dental age is not similar to the chronological age but the degree of correlation between both is adequate to apply in our population, presenting itself in the same way according to gender, so a standard table for the population was elaborated Cuencana. We consider that the Demirjian method is applicable to this sample of children using the database proposed in the present investigation.
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De Melo, Keylla Dayanne Coelho Marinho, Carla Maria Melleiro Gimenez, Valdeci Feliciano Gomes, André Pinheiro de Magalhães Bertoz, Francisco Antônio Bertoz, and Andreia Gomes Moreira. "Revisão sistemática dos métodos de correlação entre a idade dentária e cronológica em função das análises de Demirjian." Revista Brasileira de Criminalística 9, no. 2 (2020): 123–33. http://dx.doi.org/10.15260/rbc.v9i2.281.
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A maturidade dentária, frequentemente expressa como idade dentária, é um indicador da maturidade biológica de crescimento. Um método para avaliá-la foi primeiramente descrito por Demirjian, este método é amplamente utilizado e aceito, principalmente pela sua habilidade em comparar diferentes grupos étnicos. Isto é possível pelo sistema de escores proposto pelo método de aplicabilidade universal. O objetivo dessa revisão sistemática é comparar os resultados obtidos em pesquisas com base no método de Demirjian de modo a estabelecer a aplicabilidade do método. Foram incluídos na pesquisa estudos originais do tipo ensaio clínicos estabelecidos em comparação com o método proposto por Demirjian. Os demais critérios de inclusão foram: data da publicação do estudo terem sido realizados em crianças na fase de crescimento e publicados nos idiomas inglês e português. Dentre os 36 estudos analisados 19 concluíram alta precisão no método de Demirjian quando correlaciona idade dentária com idade cronológica, entretanto 17 pesquisas relatadas no estudo reiteram a importância de que cada população de crianças tenha seus próprios padrões para a adequada avaliação da estimativa de idade. O método de Demirjian demonstrou alta precisão quando correlaciona à idade dentária com a idade cronológica, contudo, ressaltamos a importância da avaliação dos padrões étnicos para a adequada avaliação da estimativa de idade, maturação e idade dentária de acordo com a idade cronológica.
Dissertations / Theses on the topic "Demirjian"
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Khdairi, Nadiajda [Verfasser]. "Anwendbarkeit und Anpassung der Demirjian-Methode zur Zahnalterbestimmung für norddeutsche Kinder / Nadiajda Khdairi." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2021. http://d-nb.info/1241541191/34.
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Peña, Gutiérrez Carlos Eduardo. "Estimación de la edad dental usando el método de Demirjian en niños peruanos." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/2166.
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Es un estudio retrospectivo y transversal, donde el desarrollo dental de 321 niños y niñas peruanas entre 5,5 a 13,5 años fue evaluado con el método de Demirjian. Una submuestra de 32 radiografías panorámicas fue escogida al azar y vueltas a examinar para evaluar la fiabilidad intraexaminador. El coeficiente de correlación intraclase en las puntuaciones de maduración fue de 0,99. El coeficiente de Cohen’s Kappa fue de 0,82, ambas interpretadas como altamente confiables. Los niños fueron clasificados por sexo y edad. La edad dental y la edad cronológica fueron comparadas usando la prueba t pareada. En la mayoría de los grupos, la edad dental fue sobrestimada y presentaban una diferencia significativa. Nuevos estándares para la población peruana fueron construidos usando una curva logística con la ecuación: y = 1 / ((1/100) + ) como base ya que los estándares propuestos por Demirjian no fueron apropiados para la población peruana.<br>-- In a retrospective cross - sectional study dental development of 321 Peruvian children,
aged 5,5 – 13,5 years, were evaluated by Demirjian method. A subset of 32
pantomograms were randomly chosen and re-examined. The intra-class correlation
coefficient on maturity scores was 0,99. The Cohen’s Kappa coefficient was 0,82, both
interpreted as “substantially reliable”. The children were classified by sex and age. Dental
age and chronological age were compared using paired t – test. Dental age was
overestimated in most of age groups and there is no statiscal difference. New standards
for Peruvian children were built using a logistic curve with the equation: y = 1 / ((1/100) +
) as a basis, because of Demirjian’s standards were not appropriate to Peruvian children.<br>Tesis
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Blenkin, Matthew Robert Barclay. "Forensic Dentistry and its Application in Age Estimation from the Teeth using a Modified Demirjian System." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/669.
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The estimation of age at time of death is often an important step in the identification of human remains. If this age can be accurately estimated, it will significantly narrow the field of possible identities that will have to be compared to the remains in order to establish a positive identification. Some of the more accurate methods of age estimation, in the juvenile and younger adult, have been based on the assessment of the degree of dental development as it relates to chronological age. The purpose of this current study was to test the applicability of one such system, the Demirjian system, to a Sydney sample population, and to develop and test age prediction models using a large sample of Sydney children (1624 girls, 1637 boys). The use of the Demirjian standards resulted in consistent overestimates of chronological age in children under the age of 14 years by as much as a mean of 0.97 years, and underestimates of chronological age in children over 14 years by as much as a mean of 2.18 years in 16 year-old females. Of the alternative predictive models derived from the Sydney sample, those that provided the most accurate age estimates are applicable for the age ranges 2-14 years, with a coefficient of determination value of R-square=0.94 and a 95% confidence interval of ±1.8 years. The Sydney based standards provided significantly different and more accurate estimates of age for that sample when compared to the published standards of Demirjian.
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Blenkin, Matthew Robert Barclay. "Forensic Dentistry and its Application in Age Estimation from the Teeth using a Modified Demirjian System." University of Sydney. Community Oral Health and Epidemiology, 2005. http://hdl.handle.net/2123/669.
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The estimation of age at time of death is often an important step in the identification of human remains. If this age can be accurately estimated, it will significantly narrow the field of possible identities that will have to be compared to the remains in order to establish a positive identification. Some of the more accurate methods of age estimation, in the juvenile and younger adult, have been based on the assessment of the degree of dental development as it relates to chronological age. The purpose of this current study was to test the applicability of one such system, the Demirjian system, to a Sydney sample population, and to develop and test age prediction models using a large sample of Sydney children (1624 girls, 1637 boys). The use of the Demirjian standards resulted in consistent overestimates of chronological age in children under the age of 14 years by as much as a mean of 0.97 years, and underestimates of chronological age in children over 14 years by as much as a mean of 2.18 years in 16 year-old females. Of the alternative predictive models derived from the Sydney sample, those that provided the most accurate age estimates are applicable for the age ranges 2-14 years, with a coefficient of determination value of R-square=0.94 and a 95% confidence interval of �1.8 years. The Sydney based standards provided significantly different and more accurate estimates of age for that sample when compared to the published standards of Demirjian.
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Gutiérrez, Cornejo David Tomas. "Comparación de la precisión de los métodos de Nolla y Demirjian para estimar la edad cronológica de niños peruanos." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/4464.
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Fue un estudio descriptivo, transversal y retrospectivo, donde se determinó la precisión en la estimación de la edad cronológica de los niños atendidos en la clínica de Odontopediatría de la Facultad de Odontología de la Universidad Nacional Mayor de San Marcos. El estudio fue realizado con una muestra de 150 historias clínicas de las cuales se registraron en una ficha de recolección de datos el nombre del paciente, fecha de nacimiento, sexo, edad cronológica, estado de mineralización de las 7 piezas dentarias inferiores izquierdas y puntuación dada por el estadío de ineralización de cada una de las piezas según los métodos Nolla y Demirjian. Previo a la ejecución se seleccionaron 15 radiografías panorámicas adicionales para evaluar la fiabilidad intraexaminador para ambos métodos. El coeficiente Kappa para el método Demirjian fue de 0.852 y el de Nolla fue 0.763, ambos resultados obtenidos son válidos y confiables.
Las edades cronológicas obtenidas por ambos métodos fueron comparados usado el coeficiente de correlación de Pearson. Para la técnica Demirjian el coeficiente de correlación fue de 0.923 y para la técnica Nolla fue de 0.870, concluyéndose que el método de Demirjian es más preciso que el método de Nolla para la estimación de la edad.<br>Tesis
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Marañón, Vásquez Guido Artemio. "Edad dental según los métodos Demirjian y Nolla en niños peruanos de 4 a 15 años." Universidad de San Martín de Porres. Programa Cybertesis PERÚ, 2011. http://cybertesis.usmp.edu.pe/usmp/2011/maranon_ga/html/index-frames.html.
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Determinar qué método de evaluación radiológico para la estimación de la edad dental, Demirjian o Nolla, es más preciso en la determinación de la edad en niños peruanos de 4 a 15 años que hayan solicitado atención por la especialidad de ortodoncia en la Clínica Especializada en Odontología de la USMP entre mayo de 2009 y junio de 2010. Se realizó un estudio retrospectivo, transversal, comparativo, en el que se evaluaron 59 radiografías panorámicas, 25 del sexo masculino y 34 del femenino, de un grupo de niños de 4 a 15 años. Se determinó la edad dental de cada integrante de la muestra según los métodos Demirjian y Nolla, y posteriormente se comparó esta con la edad cronológica<br>To determine which method of radiological assessment for dental age estimation, Demirjian or Nolla, is more accurate in determining the age in Peruvian children aged 4 to 15 years who have sought care for the specialty of orthodontics at the clinic in dentistry from the USMP between May 2009 and June 2010. A retrospective, cross-sectional comparative study, which evaluated 59 panoramic radiographs, 25 male and 34 female, a group of children from 4 to 15 years. Dental age was determined for each member of the sample according to Demirjian and Nolla methods, and then compared this with chronological age
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Vieira, Sara Isabel Pereira. "Correlação entre a idade cronológica e a mineralização do terceiro molar através do Método de Demirjian." Master's thesis, [s.n.], 2011. http://hdl.handle.net/10284/2589.
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Trabalho apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária<br>A Medicina Dentária Forense é uma área da Medicina Dentária que representa um papel significativo na identificação de indivíduos, tendo como objectivo extrair informações das peças dentárias e estruturas adjacentes. A estimativa da idade é uma ciência da Medicina Dentária Forense importante para os processos de identificação. O Método de Demirjian é um dos métodos utilizados para esse efeito e consiste na classificação dos dentes em oito estadios de desenvolvimento designados pelas letras “A”, “B”, “C”, “D”, “E”, “F”, “G” e “H”. O objectivo deste trabalho foi avaliar a correlação entre a idade cronológica e a mineralização do terceiro molar através do Método de Demirjian. Avaliando assim a confiabilidade deste mesmo método através da visualização de ortopantomografias.
Para a elaboração deste trabalho foi realizada uma pesquisa bibliográfica através dos motores de busca: Pubmed, B-on, Science Direct, Scielo Brasil e Google Académico. Foram consultados 1341 processos correspondentes a triagens efectuadas durante todo o ano de 2010 da Clínica Pedagógica de Medicina Dentária da Universidade Fernando Pessoa. Pela aplicação dos critérios de exclusão e inclusão estabelecidos foram eliminadas 1237, tendo-se prosseguido o estudo com 104 processos.
Da amostra analisada verificou-se que este método é confiável para esta população, não se notando diferenças significativas entre os géneros. O estadio mais frequente para as idades inferiores a 16 anos é o “D”, para o intervalo de idades dos 16 aos 18 anos é o “E” e para idades superiores a 18 anos é o “H”.
O método de Demirjian é um método simples e não invasivo na qual se demonstra a utilidade da Medicina Dentária Forense na identificação humana, tendo em conta que as peças dentárias são das estruturas do corpo humano mais resistentes e indestrutíveis devido à sua mineralização. Confirmou-se a utilidade deste método para a estimativa da idade com base nos terceiros molares, como método auxiliar na identificação de indivíduos que se encontram indocumentados, refugiados ou imigrantes ilegais cujo número é cada vez maior em todo o mundo. Forensic dentistry is an area of dentistry that represents a significant role in the identification of persons with the aim of extracting information from dental specimens and adjacent structures. Estimated age is a science of Forensic Dentistry important for identification processes. Demirjian’s method is one of the methods used for this purpose and consists in eight stages of tooth development designated by letters “A”,”B”, “C”, “D”, “E”, “F”, “G” and “H”. The aim of this study was to evaluate the correlation between chronological age and mineralization of third molars by Demirjian’s method. Panoramic radiograph where used to evaluate the reability of this method.
Literature search was conducted through Pubmed, B-on, Science Direct, Scielo Brazil and Google Scholar. 1341 cases were found corresponding to trials carried out during the year of 2010 in the Educational Clinic of Dentistry in Fernando Pessoa University. Applying inclusion and exclusion criteria, 1237 were eliminated, and the sample of this study was 104 cases.
We found that this method was reliable for this population, and that there were no significant differences between the sexes. The most common stage for 16 years old was “D”, “E” for 16 to 18 years old, and “H” above 18 years old.
Demirjian’s method is a simple and noninvasive method which demonstrates helpfulness for human identification, because dental pieces are the more resilient and indestructible structures of the human body. This study confirmed usefulness for age estimated based on the observation of third molars, for identifying individuals who are undocumented, illegal immigrants or refugees whose number is increasing in all over the world.
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Blenkin, Matthew R. B. "Forensic Dentistry And Its Application In Age Estimation From The Teeth Using A Modified Demirjian System." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/5036.
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Perales, Quito Liz Mónica, and Ñahuinlla Andrea Gianella Huaman. "Comparación de los métodos Demirjian, Cameriere y Nolla para la estimación de la edad dental según la edad cronológica en una población peruana." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653072.
Full textAbstract:
Objetivo: Comparar los métodos de Demirjian, Nolla y Cameriere para la estimación de la edad según la edad cronológica en una población peruana.
Materiales y métodos: El diseño del estudio es de tipo descriptivo, de corte transversal. Se seleccionaron 193 radiografías panorámicas aleatoriamente de niños de 6 a 14 años de edad. Se compararon la edad cronológica (EC) y la edad dental (ED) según los métodos de Nolla, Demirjian y Cameriere, utilizando las Pruebas de Rangos de Wilcoxon y Kruskall Wallis.
Resultados: La media de la EC fue de 8.77±2.34 y 8.90±2.04 años para el género femenino y masculino, respectivamente. La diferencia de medias de la EC y ED de acuerdo con los métodos Nolla años, Demirjian y Cameriere años fue de -0.38, 0.96 y -0.29 años, respectivamente, para la muestra total de estudio.
Conclusiones: Se encontró una correlación positiva para los tres métodos estudiados, sin embargo, el método de Demirjian mostró una diferencia estadísticamente significativa con una subestimación de -0.91 años en la muestra total. Asimismo, el método de Cameriere fue el que tuvo más cercanía a la edad cronológica.<br>Aim: The aim of this study is to compare Demirjian, Nolla and Cameriere methods for the estimation of dental age in peruvian population.
Materials and Methods: This retrospective and cross-sectional study included 193 panoramic radiographs randomly selected from children aged between 6 and 14 years. Chronological age (CA) and dental age (DA) were compared using the Wilcoxon and Kruskall Wallis Range Tests.
Results: The mean was 8.77 ± 2.34 and 8.90 ± 2.04 years of the CA for the female and male gender, respectively. The difference in means of the CA and DA according to the Nolla, Demirjian and Cameriere methods were -0.38, 0.96 and -0.21 years, respectively, for the total study sample.
Conclusions: A positive correlation was found for the three methods studied, however, the Demirjian method showed a statistically significant difference with an underestimation of -0.91 years in the total sample. Also, the method of Cameriere was the closest to the chronological age.<br>Tesis
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Júlio, Paula Sofia da Costa. "Estimativa da idade em individuos vivos não-adultos : aplicação do método de demirjian a uma população portuguesa." Master's thesis, Faculdade de Medicina da Universidade do Porto, 2007. http://hdl.handle.net/10216/21934.
Full textAbstract:
Mestrado em Ciências Forenses<br>Master Degree Course in Forensic Sciences<br>Na actualidade, a transversalidade das questões médico-legais implica diferentes conhecimentos e a contribuição das várias Ciências Forenses.
Estas concorrem na colecção de evidências para uma resposta cientifica integrada e coordenada pela Medicina Legal, a questões colocadas pelas autoridades.
A este nível organizacional, a colaboração da Medicina Dentária Forense (MDF) pode ser solicitada pelos diferentes serviços do Instituto Nacional de Medicina Legal, reconhecendo-se
como principais requisitantes a Clínica médico-legal e as Ciências Tanatológicas. Nesta perspectiva, a concretização de uma abordagem multidisciplinar começa a definir alguns dos
temas de interesse da MDF, sendo um dos mais relevantes no contexto médico-legal a sua participação no processo de identificação. Reconhecem-se diferentes especificidades neste
processo, que pode ter diversos contextos forenses como sendo um desastre de massas, a identificação de um cadáver ou restos humanos, a identificação de um indivíduo vivo, cujo
objectivo pode ser especificamente a determinação da idade. Assim, e resumidamente, num processo de identificação a MDF pode contribuir em diferentes cenários, sendo o denominador
comum a avaliação de características do aparelho estomatognático. Uma outra área de crescente requisição diz respeito ao diagnóstico de situações de maus-tratos, cujas lesões
ocorrerem primordialmente na zona orofacial. Nesta perspectiva, entende-se o papel de primeira linha no que concerne ao diagnóstico destas situações. Ainda outro tema de
interesse, intrínseco ao desempenho de cada indivíduo na sua profissão está relacionado com a atribuição da responsabilidade perante uma queixa de negligência.
Naturalmente, a avaliação de uma situação destas exige alguém que desempenhe a mesma profissão, pela legitimidade e conhecimentos técnicos necessários para responder às
questões redigidas num exame pericial ou colocadas pelo foro. Outro exemplo de cooperação da MDF com uma crescente solicitação por parte das autoridades é outro aspecto relativo
à avaliação do dano corporal para além do verificado nas situações de negligência, nas diferentes responsabilidades de trabalho, civil e penal.<br>The European continent has a long Humanitarian tradition of shelter and asylum to
foreigners and refugee. However, nowadays the European Union countries are
dealing with the illegal immigration phenomenon. Besides, Schengen space free
circulation is used as an advantage by criminal organizations that control nets of
clandestine immigration, exploring human beings, being the most vulnerable young
children. So, in order to fight against these activities, States Members police forces
and judicial authorities are working together. In this context, often these children or
young people don t have documents, or having them the suspicion of irregularities
is arise, and so, is necessary to evaluate these individuals and determine their age,
so that the authorities can reply according with the law of their country and in
agreement with the international protection. Some years ago, papers of
organizations as ACNUR release some alerts, concerning the issue of age
determination, underlining that age establishment is not exact, but has indeed a
considerable margin of error that must be mentioned. Among the forensic scientific
community, the problem of reliability of the applied methods in age diagnostic of
the living individual is a reality in course. Some recent organizations, as IOFOS and
AGFAD, are leading the elaboration and update of guidelines or protocols for the
forensic experts. The problem in estimating chronological age, using the different
ages as bone age, sexual age and dental age, is obvious. Chronological age follows
a continuous and inexorable path, while biological age can present a more irregular
evolution, with accelerations and delays, and also depending on genetic and
ambient factors. Among the development ages, the dental age in the immature
individuals is considered the most exact and precise. In fact, the criteria of
mineralized stages used to determine dental age in an attempt to reach the degree
of individual maturity, is one of the best biological methods in screening the
physiological development. The estimation of the chronological age must however
Summary
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result of some combine biological ages with the purpose of increase the precision of
the diagnostic age.
Despite all natural difficulties in estimating chronological age from biological age, in
literature we can find proposals of elaborated techniques in the mathematical point
of view with lesser margin of error when applied to the same population of the
reference sample.
One of the most well-known methods, in what validity and reliability are concerned,
is the method of Demirjian et al., 1973; 1976, currently considered the method of
international reference for the determination of the age in young undocumented
minors. This method was applied to a sample of 512 Portuguese individuals, 261
girls and 251 boys, with ages between 6 and 16 and whose panoramic radiographs
had been taken in the FMDUP. The outcome was an overestimation of 0,41 for girls
and 1,57 for boys. In this study we have concluded that the method of Demirjian
even if has applicability to our trial, needs correction for the dental maturity
standards of young Portuguese people in this age interval.
Books on the topic "Demirjian"
1
White, Patrick. Memoirs of many in one, by Alex Xenophon Demirjian Gray. Cape, 1986.
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Patrick, White. Memoirs of many in one, by Alex Xenophon Demirjian Gray. Irwin., 1986.
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Jorge, Demirjián, and Museo Nacional de Bellas Artes (Argentina), eds. Jorge Demirjián. Museo Nacional de Bellas Artes, 2002.
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Demirjián, Jorge. Jorge Demirjián: 6 al 29 de octubre de 2000, Centro Cultural Recoleta, Buenos Aires. Centro Cultural Recoleta, 2000.
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Demirjián, Jorge. Jorge Demirjián: 15 años, 1980-1995 : Museo de Arte Moderno de Buenos Aires, agosto-septiembre 1995. El Museo, 1995.
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Lambert, Jean, and Patrick White. Mémoires éclatés d'Alex Xenophon Demirjian Gray. GALLIMARD, 1988.
Find full textBook chapters on the topic "Demirjian"
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Cruz-Landeira, A., J. Linares-Argote, M. Martínez-Rodríguez, et al. "Dental age Estimation in Spanish and Venezuelan children: comparison of demirjian´s and chaillet´s scores." In Acta medicinae legalis et socialis. Imprensa da Universidade de Coimbra, 2010. http://dx.doi.org/10.14195/978-989-26-0173-1_27.
Full textConference papers on the topic "Demirjian"
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PANEBIANCHI DE LIMA, GIOVANNA, and Deborah Queiroz de Freitas. "Comparação da estimativa da idade dentária através dos estágios de mineralização dentária propostos por Nolla e Demirjian." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51061.
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Alghali, R., A. F. Kamaruddin, and N. Mokhtar. "Dental age estimation: Comparison of reliability between Malay formula of Demirjian method and Malay formula of Cameriere method." In TRANSLATIONAL CRANIOFACIAL CONFERENCE 2016 (TCC 2016): Proceedings of the 1st Translational Craniofacial Conference 2016. Author(s), 2016. http://dx.doi.org/10.1063/1.4968871.
Full textReports on the topic "Demirjian"
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Alshamrani, Khalaf, and Hassan Alshamrani. The reliability of Demirjian method when determining dental age in children from Saudi Arabia. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.3.0153.
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