scholarly journals Age Estimationof Pawon Manwith Teeth Identification Using Johanson Method Through Cbct 3d Radiograph

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.

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Kyungmin Lee ◽  
Gyu-Hyoung Lee

Abstract Background Radiographs are integral in evaluating implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating the 3D root position with minimal radiation using a 3D tooth model composed of an intraoral-scanned crown and a cone-beam computed tomography (CBCT)-scanned root. Materials and methods Intraoral scan and CBCT scan of the patient were obtained before treatment. In the CBCT image, tooth segmentation was performed by isolating individual teeth from the maxillary and mandibular alveolar bone using software program. The 3D tooth model was fabricated by combining segmented individual teeth with the intraoral scan. Results A post-treatment intraoral scan was integrated into the tooth model, and the resulting position of the root could be predicted without additional radiographs. It is possible to monitor the root position after a pretreatment CBCT scan using a 3D tooth model without additional radiographs. Conclusion The application of the 3D tooth model benefits the patient by reducing repeated radiation exposure while providing the clinician with a precise treatment evaluation to monitor tooth movement.


Author(s):  
Marcin Stasiak ◽  
Anna Wojtaszek-Słomińska ◽  
Bogna Racka-Pilszak

Abstract Purpose The aims of this retrospective cross-sectional study were to measure and compare labial and palatal alveolar bone heights of maxillary central incisors in unilateral cleft lip and palate patients, following STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) guidelines. Patients and methods The study group consisted of 21 patients with a mean age of 16 years. High-resolution cone-beam computed tomography was performed at least one year after secondary alveolar bone grafting. The experimental side was the cleft side and the contralateral side without congenital cleft was the control. Measurements were performed on incisors’ midsagittal cross-sections. The Wilcoxon signed-rank test was used for intergroup comparisons. Results The labial and palatal distances between alveolar bone crests and cementoenamel junctions were significantly greater on the cleft side than on the noncleft side. Mean differences were 0.75 and 1.41 mm, respectively. The prevalence of dehiscences at the cleft side maxillary central incisors was 52% on the labial surface and 43% on the palatal surface. In the controls, it was 19% and 14%, respectively. Conclusion The cleft-adjacent maxillary central incisors had more apically displaced alveolar bone crests on the labial and palatal sides of the roots than the controls. Higher prevalence of dehiscences was found on the cleft side. Bone margin differences predispose to gingival height differences of the central incisors. These differences could increase the demands of patients to obtain more esthetic treatment results with orthodontic extrusion and periodontal intervention on the cleft side.


2021 ◽  
Vol 12 (3) ◽  
pp. 230-233
Author(s):  
Piyush Gupta ◽  
Nivedita Sahoo ◽  
Kavuda Nagarjuna Prasad ◽  
MS Rami Reddy ◽  
Saranya Sreedhar ◽  
...  

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