scholarly journals Tooth Coronal Index: A Novel Tool For Age Estimation on Cone-Beam Computed Tomography

Author(s):  
Bharati R. Doni ◽  
Santosh Rayagouda Patil ◽  
Ruchi Agrawal ◽  
Narges Ghazi ◽  
Kazuyuki Araki ◽  
...  
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Fatma M. Elgazzar ◽  
Mohamed Omar Elboraey ◽  
Ghada N. El-Sarnagawy

Abstract Background Globally, the need for an accurate and valid method for age estimation in adults still exists. The aging process is associated with secondary dentine deposition that reduces the volume of teeth pulp. Therefore, dental age could be recognized from the volume of pulp cavity. The aim of this study was to assess the accuracy and validity of pulp chamber/crown volume ratio of maxillary and mandibular canines in estimating age using cone beam computed tomography (CBCT) images in a sample of the Egyptian population. Results There were significant strong negative correlations between age and each of the maxillary pulp chamber volume (PCV), mandibular PCV, maxillary pulp chamber/crown volume (PCV/CV) ratio, and mandibular PCV/CV ratio (p < 0.001). Furthermore, no significant differences were detected between both sexes regarding the mean maxillary and mandibular PCV and PCV/CV ratios (p > 0.05). The best fit regression model for age prediction was as follows: age (years) = 70.21 − 784.0x maxillary PCV/CV ratio − 1.66x maxillary PCV. The proposed model showed good power of prediction (R2 adjusted = 0.951). Additionally, the model was validated on an independent sample of 100 CBCT images with a root mean squared error (RMSE) of 2.86 years. Conclusion The obtained valid regression formula in this study can serve as a reliable tool for age estimation in Egyptians. This formula should be further validated on a larger sample size of the Egyptian population that considers more steady age distribution.


AMERTA ◽  
2018 ◽  
Vol 36 (1) ◽  
pp. 1
Author(s):  
Lutfi - Yondri

Abstrac. Pawon man is prehistoric human who lived in Pawon cave. The skeletons founded in  the cave consist of rest of brittle bones and teeth which still attached to alveolar bone even though it had immersed inside the soils on thousands years ago. Then, the teeth are used as primary identification in forensic odontology research. This research aimed is to compare age estimation of Pawon man with Johanson method. Previously, the age estimation was made only based on visual observation of posterior molars attrition by Brothwell method. This research is a descriptive studied using purposive sampling. The samples are 21 teeth that intact and attach to the alveolar bone without any fracture line. The measurement of age estimation with Johanson method using Ez-Implant software, it’s non-invasive age measurement by Cone Beam Computed Tomography 3D radiograph. The results showed that the age of first Pawon man is 32-33.92 years old, third Pawon man is 32.935-36.275 years old, fourth Pawon man is 34.42 years old, and fifth Pawon man is 27.36-31.35 years old. Nonetheless, the second Pawon man is not included in sampling criteria. The measurement using Johanson method through  CBCT.  Abstrak. Manusia Pawon adalah manusia prasejarah yang pernah hidup di Gua pawon pada masa lalu. Kerangka didirikan terdiri dari sisa tulang rapuh dan gigi yang masih menempel pada tulang alveolar meskipun telah terdeposisi di dalam tanah dari ribuan tahun yang lalu. Gigi merupakan digunakan sebagai identifikasi utama dalam penelitian odontologi forensik. Penelitian ini bertujuan untuk membandingkan estimasi usia manusia Pawon menggunakan metode Johanson. Sebelumnya, estimasi usia baru dibuat hanya berdasarkan pengamatan visual dari atrisi molar posterior menggunakan metode Brothwell. Penelitian ini merupakan penelitian deskriptif menggunakan purposive sampling. Sampel adalah 21 gigi yang utuh dan menempel pada tulang alveolar tanpa garis fraktur. Pengukuran estimasi umur bersifat non-invasif menggunakan hasil radiografi Cone Beam Computed Tomography 3D dan dianalisis melalui metode Johanson menggunakan software Ez-Implan. pengukuran Hasil penelitian menunjukkan bahwa usia manusia Pawon pertama adalah 32-33,92 tahun, Manusia Pawon ketiga adalah berusia 32,935-36,275 tahun, Manusia Pawon keempat berusia 34,42 tahun, dan Manusia Pawon kelima berusia 27,36-31,35 tahun. Manusia Pawon kedua tidak diukur karena tidak termasuk dalam kriteria sampling. Dapat dismpulkan bahwa pengukuran menggunakan metode Johanson melalui CBCT 3D lebih spesifik dan detail dalam menghasilkan estimasi umur dibandingkan dengan metode Brothwell.


2016 ◽  
Vol 18 ◽  
pp. 13-19 ◽  
Author(s):  
Alper Sinanoglu ◽  
Husniye Demirturk Kocasarac ◽  
Marcel Noujeim

Author(s):  
Fatemeh Salemi ◽  
Maryam Farhadian ◽  
Bahare Askari Sabzkouhi ◽  
Samira Saati ◽  
Nika Nafisi

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