scholarly journals Volume measurement of mandibular teeth pulp chamber as a prediction tool of gender and ethnicity in a Brazilian population

2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Karolina Aparecida Castilho Fardim ◽  
Eurico Oliveira Junior ◽  
Rafael Rodrigues ◽  
Elaine Araújo ◽  
João Pedro Gomes ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Dental Arch ◽  
P Value ◽  
Forensic Dentistry ◽  
Pulp Chamber ◽  
Dental Tissues ◽  
Chamber Volume ◽  
Volumetric Assessment

Objective: Forensic dentistry has used some methods for the human identification process. However, there is a need to study characteristics that are able to perform identification more specifically, increasing accuracy. Considering the role of dental arch assessment in prediction of gender and ethnicity, the purpose of this study was to assess the volume of pulp chamber as a mean to obtain new forensic evidence. Material and methods: For this task, 1.190 cone beam computed tomography (CBCT) images were retrospectively selected and subdivided according to the population number, gender, age and ethnicity. All DICOM files were imported to the open-source software ITK-SNAP® (http://www.itksnap.org/pmwiki/pmwiki.php). The segmentation process was performed in all pulp chamber aiming to obtain pulp tissue´s volume. Results: As a result, the pulp chamber volume of mandibular canine teeth showed to be larger in white population than in non-white (P-value = 0.003) and in male individuals in comparison with female (P-value = 0.038). Conclusion: These results, however, must be confirmed by future studies with a larger sample size and by the assessment of other variables, including texture analysis and density of dental tissues. KEYWORDS Cone beam computed tomography; Ethnicity; Forensic dentistry; Gender; Pulp chamber volume; Volumetric assessment.

scholarly journals Volumetric pulp chambers measurements in mandibular and maxillary permanent first molar using cone-beam computed tomography by age and gender

2019 ◽  
Vol 9 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Anıl Açıklar Kavas ◽  
Emin Caner Tümen
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Age Groups ◽  
Cone Beam ◽  
Pulp Chamber ◽  
Volume Changes ◽  
Age And Gender ◽  
Chamber Volume ◽  
Molar Teeth ◽  
And Gender

Aim: The aim of this study was to demonstrate the anatomical structure of pulp chamber, measure the volume of the total pulp chambers in mm3 and evaluate the pulp chamber volume changes by age and gender statistically in mandibular and maxillary first molars by means of CBCT. Methodology: In our study, CBCT examinations of patients between the ages of 7-18 years, which were carried out due to different reasons were evaluated retrospectively. The CBCT images of healthy total of 160 lower and upper right permanent first molar teeth were selected randomly and the volumes of the total pulp chamber were measured in mm3 with the 3D Slicer software program. We analyzed the collected data with statistical analysis methods and we evaluated whether there was any difference between the patients grouped according to the age in respect of volume changes in the total pulp chamber and whether there was any difference between the mean volume values and gender of the patients within the same group. Results: Comparison of the volume measurements of the lower and upper first permanent molar teeth between the groups showed that the volume values of the total pulp chamber decreased depending on the age (p<0.05). Regarding gender, volume decrease related to age was statistically more significant among females. We determined in all age groups except age 7-9 group that the volume value of the total pulp chamber of the upper permanent first molar teeth was statistically higher than the volume value of the total pulp chamber of the lower permanent first molar teeth (p<0,05). Conclusion: We believe that CBCT is an easy and conservative method for the 3D-imaging of the pulp chamber, volume measurement and examination of the dimensional changes of the total pulp chamber depending on deposition of secondary dentin.   How to cite this article: Açıklar Kavas A, Tümen EC. Volumetric pulp chambers measurements in mandibular and maxillary permanent first molar using cone-beam computed tomography by age and gender. Int Dent Res 2019;9(1):30-40.   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

scholarly journals Age Estimation Based on the Pulp Chamber Volume of Multi-rooted Teeth Using Cone Beam Computed Tomography

2020 ◽  
Vol 12 (1) ◽  
pp. 19-24
Author(s):  
Faezeh Yousefi ◽  
Sima Lari ◽  
Abbas Shokri ◽  
Soroush Hashemi ◽  
Mehdi Hosseini
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Age Estimation ◽  
Cone Beam ◽  
Pulp Chamber ◽  
Chamber Volume

Age estimation based on pulp chamber volume of first molars from cone-beam computed tomography images

2015 ◽  
Vol 253 ◽  
pp. 133.e1-133.e7 ◽  
Author(s):  
Zhi-pu Ge ◽  
Ruo-han Ma ◽  
Gang Li ◽  
Ji-zong Zhang ◽  
Xu-chen Ma
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Age Estimation ◽  
Cone Beam ◽  
Pulp Chamber ◽  
Chamber Volume ◽  
Computed Tomography Images

Acquisition of Anatomic Parameters Concerning Molar Pulp Chamber Landmarks Using Cone-beam Computed Tomography

2014 ◽  
Vol 40 (9) ◽  
pp. 1298-1302 ◽  
Author(s):  
Adham A. Azim ◽  
Katharina A. Azim ◽  
Allan S. Deutsch ◽  
George T.-J. Huang
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Pulp Chamber

Dentin Thickness of Pulp Chamber Floor in Primary Molars: Evaluation by Cone-Beam Computed Tomography

2021 ◽  
Vol 21 ◽  
Author(s):  
Mariane Bovino ◽  
Larissa de Souza Santos ◽  
Larissa Lopes Freitas de Albuquerque Cavalcante ◽  
Cacilda Castelo Branco Lima ◽  
Marina de Deus Moura de Lima ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Primary Molars ◽  
Pulp Chamber ◽  
Dentin Thickness ◽  
Chamber Floor

scholarly journals Analisis gambaran histogramdan densitas kamar pulpa pada gigi suspek pulpitis reversibel dan ireversibel dengan menggunakan radiografi cone beam computed tomography (Histogram and density analysis of irreversible and reversible pulpitissuspected tooth using cone beam computed tomography radiography)

2014 ◽  
Vol 13 (2) ◽  
pp. 122
Author(s):  
Lusi Epsilawati ◽  
Suhardjo Sitam ◽  
Sam Belly ◽  
Fahmi Oscandar
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Secondary Data ◽  
Cone Beam ◽  
Pulp Chamber ◽  
Control Data ◽  
Density Analysis ◽  
The Right ◽  
Irreversible Pulpitis ◽  
Peak Value

Inflammation of the pulp is most common and difficult to diagnose. For it radiographs is necessary. One attempt to do is to assess its histogram and density. Radiography equipment that has the ability to analyze is cone beam computedtomography (CBCT). The purpose of this study is to analyze radiograph of the pulp chamber histogram: peak value,grayscale and trends, as well as the density on the condition reversible and irreversible pulpitis condition. The populationof this descriptive study is secondary data of CBCT-3D radiographs during 2012-2013. Selected sample of 75 data isreversible pulpitis, irreversible pulpitis 80 data, as well as 20 normal condition data as control. Data were analyzed byone way ANOVAand are presented in tables and graphs. The results showed that the value of the histogram under normalconditions showeda different significance for both the peak value of the reversible or irreversible pulpitis (p= 0.01). It isdifferent with a grayscale value, showed no significant different between normal with reversible pulpitis (p =0.997) and significantly different between normal and pulpitis reversible against pulpitis irrebversible (p= 0.03-0.01). There is a growing trend change is on the right direction of reversible and irreversible pulpitis. It was concluded that the irreversiblepulpitis, density and histogram shows the direction of more luscent compared with normal and reversible pulpitisconditions.

scholarly journals Evaluation of the Prevalence of Concha Bullosa in Cone-Beam Computed Tomography Images

2020 ◽  
Vol 12 (3) ◽  
pp. 93-96
Author(s):  
Nasim Shams ◽  
Bahareh Shams ◽  
Zahra Sajadi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Middle Turbinate ◽  
Cone Beam ◽  
P Value ◽  
Concha Bullosa ◽  
Computed Tomography Images ◽  
Significant Difference ◽  
And Gender ◽  
Sinus Ostium

Background: The ostiomeatal complex (OMC) is not a separate anatomical structure although it is a functional unit of structures, including the middle meatus, uncinate process, infundibulum, maxillary sinus ostium, ethmoidal bulla, anterior ethmoid sinus ostium, and frontal recess. Concha bullosa is the pneumatization of the concha, which is one of the most common anatomical variations in the middle turbinate. Methods: This study was conducted using the cone-beam computed tomography (CBCT) images of 172 patients in the archives of the Department of Oral and Maxillofacial Radiology, Dentistry School, Ahvaz Jundishapur. Patient information including age and gender, presence or absence of concha bullosa, the involved side (left or right), and its type (i.e., extensive, lamellar, and bulbous) were collected in the information form. Finally, the chi-square test (with SPSS, version 22) was used to analyze the data, and P value less than 0.05 was considered statistically significant. Results: Patients with and without concha bullosa were 39.1 and 41.7 years, respectively, but it was no significant difference in terms of age (P = 0.321). Out of 52 patients with concha bullosa, 19 (36.5%) cases were males and 33 (63.5%) of them were females. The prevalence of concha bullosa was higher for the bilateral side (20 patients, 38.5%, P = 0.000). The prevalence of bulbulsand lamellar-shape was nearly the same (32.7% and 30.8%, respectively). Eventually, the extensive shape with 36.5% was more frequent for the shape of concha bullosa (P = 0.000). Conclusions: The prevalence of concha bullosa was high. There was no significant difference in terms of age (P = 0.321) and gender (P = 0.058) of patients with concha bullosa. The extensive type and the bilateral appearance of concha bullosa were more significant (P = 0.000).

scholarly journals Analysis of the correlation between dental arch and articular eminence morphology: a cone beam computed tomography study

2017 ◽  
Vol 124 (4) ◽  
pp. 420-431 ◽  
Author(s):  
Francielle Silvestre Verner ◽  
Gina Delia Roque-Torres ◽  
Laura Ricardina Ramírez-Sotello ◽  
Karina Lopes Devito ◽  
Solange Maria Almeida
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Dental Arch ◽  
Articular Eminence

scholarly journals Impacts of Thresholds of Gray Value for Cone-Beam Computed Tomography 3D Reconstruction on the Accuracy of Image Matching with Optical Scan

2020 ◽  
Vol 17 (17) ◽  
pp. 6375 ◽  
Author(s):  
Se-Won Park ◽  
Ra Gyoung Yoon ◽  
Hyunwoo Lee ◽  
Heon-Jin Lee ◽  
Yong-Do Choi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Registration ◽  
3D Reconstruction ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Dental Arch ◽  
Arch Model ◽  
3D Mesh ◽  
Optical Scan ◽  
Reconstruction Model

In cone-beam computed tomography (CBCT), the minimum threshold of the gray value of segmentation is set to convert the CBCT images to the 3D mesh reconstruction model. This study aimed to assess the accuracy of image registration of optical scans to 3D CBCT reconstructions created by different thresholds of grey values of segmentation in partial edentulous jaw conditions. CBCT of a dentate jaw was reconstructed to 3D mesh models using three different thresholds of gray value (−500, 500, and 1500), and three partially edentulous models with different numbers of remaining teeth (4, 8, and 12) were made from each 3D reconstruction model. To merge CBCT and optical scan data, optical scan images were registered to respective 3D reconstruction CBCT images using a point-based best-fit algorithm. The accuracy of image registration was assessed by measuring the positional deviation between the matched 3D images. The Kruskal–Wallis test and a post hoc Mann–Whitney U test with Bonferroni correction were used to compare the results between groups (α = 0.05). The correlations between the experimental factors were calculated using the two-way analysis of variance test. The positional deviations were lowest with the threshold of 500, followed by the threshold of 1500, and then −500. A significant interaction was found between the threshold of gray values and the number of remaining teeth on the registration accuracy. The most significant deviation was observed in the arch model with four teeth reconstructed with a gray-value threshold of −500. The threshold for the gray value of CBCT segmentation affects the accuracy of image registration of optical scans to the 3D reconstruction model of CBCT. The appropriate gray value that can visualize the anatomical structure should be set, especially when few teeth remain in the dental arch.

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