Determining Gender and Age by Mandibular Anatomy Landmarks in Computed Tomography with Cone-Beam (CBCT)

Introduction: this study aimed at determining gender and age by mandibular anatomy landmarks in computed tomography with Cone-Beam (CBCT). Methodology: this cross sectional study was performed on 147 CBCT images available in archive of radiology in the dentistry department of Ahvaz Jondi Shapoor medical science university. In this research, we assessed parameters including SMEF: Distance from mental foramen to the highest point of alveolar crest ridge, BIAC: distance from lowest point of IAC to the most anterior tangent point of buccal mandibular plate, LIAC: distance from the lowest IAC point to the most posterior tangent point o mandibular lingual plate, IMEF: distance from the lowest mental hole border to the lowest tangent point on inferior mandibular border, D2: distance from the lowest IAC canal border to the lowest tangent point on inferior mandibular border and gonial angle: junction of inferior mandibular border and posterior ramus border. Data were analysed by SPSS software 20th version and Spearman correlation coefficient tests, one-way variance analysis, Kruskal-Wallis, independent t, and Uman Withney. Results: SMEF level was significantly different in groups and in 25-34 group it was significantly higher than under 25 group. In right side it was significantly higher than female. IMEF had no significant difference in age groups and in both side it was higher in male than female. BIAC in both sides had no significant difference. LIAC in both sides an in different ages had no significant difference in male and female. D2 had no significant difference in both sides. But in a group with patients older than 55 it was significantly higher than 45-54 group. In addition, in left side it was higher in male than female there was no significant difference in gonial angle in different groups in left side with in right side there was significant difference in different age groups. But there was no significant difference in gender. Conclusion: evaluated indices in this research are not ry accurate to forecast age and gender and they cannot be used as accurate tools in estimating age and gender of people.

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

International Dental Research ◽

10.5577/intdentres.2019.vol9.no1.5 ◽

2019 ◽

Vol 9 (1) ◽

pp. 30-40 ◽

Cited By ~ 1

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.

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Evaluation of the Distance between the Mental Foramen and the Mandibular Edge: Cone Beam Computed Tomography Analysis in Turkish Population

Balkan Journal of Dental Medicine ◽

10.2478/bjdm-2021-0005 ◽

2021 ◽

Vol 25 (1) ◽

pp. 53-57

Author(s):

Ozkan Adiguzel ◽

Suzan Cangul ◽

Artemisa Adiguzel ◽

Begum Erpacal ◽

Zeki Akkus

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Age Groups ◽

Turkish Population ◽

Mental Foramen ◽

Cone Beam ◽

Imaging Method ◽

Gender And Age ◽

Significant Difference ◽

Imaging Science

Summary Background/Aim: The aim of this study was to evaluate the distance between the mental foramen and the upper and lower edges of the mandible in the Turkish population according to different gender and age groups. Material and Methods: A total of 1756 samples of 878 patients who presented at the Dentomaxillofacial Radiology Department of the Dentistry Faculty of Dicle University were included in the study for evaluation of the distance between the mental foramen and the upper and lower edges of the mandible. The cone beam computed tomography (CBCT) images were taken using an I-CAT Vision device (Imaging Science International, Hatfield, USA). Multiple variance analysis was used in the statistical analyses of the data. Results: A statistically significant difference was identified between the genders in respect of the distance of the external edge of the mental foramen from the upper edge of the mandible (p=0,000). In the evaluations of the different age groups, no statistically significant difference was determined. A statistically significant difference was determined between the gender and age groups in respect of the distance of the mental foramen from the lower edge of the mandible (p=0,000). Conclusions: The distance of the mental foramen from the upper and lower edges of the mandible can show variations according to age and gender. Therefore, the use of CBCT as a 3-dimensional imaging method with a low radiation dose is recommended.

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Evaluating the frequency of anatomical variations of the sinonasal region in pediatric and adult age groups according to gender: computed tomography findings of 1532 cases

The Egyptian Journal of Otolaryngology ◽

10.1186/s43163-021-00122-9 ◽

2021 ◽

Vol 37 (1) ◽

Author(s):

Adem Bora ◽

Merve Koç ◽

Kasım Durmuş ◽

Emine Elif Altuntas

Keyword(s):

Computed Tomography ◽

Age Groups ◽

Anatomical Variations ◽

Concha Bullosa ◽

Anterior Clinoid Process ◽

Age And Gender ◽

Adult Age ◽

Septum Deviation ◽

Significant Difference ◽

And Gender

Abstract Background The aim of the present study was to evaluate retrospectively the frequency of anatomical variations in sinonasal region, which were frequently seen in our cases, for whom coronal section paranasal computed tomography imaging (CPNCT) was taken, as well as the correlation of these variations with age and gender and correlations of identified anatomical variations with one another. In the study, CBCT scans of a total of 1532 (825 males and 707 females) cases were evaluated in order to determine the prevalence of anatomical variations of the nasal cavity and paranasal sinuses. All the images were taken by a multi-detector CT device (Aquilion, Toshiba medical system, Tokyo, Japan). Results Most frequently detected three anatomical variations were septum deviation (79.7%), concha bullosa (40.9%), and ethmoid bulla (21.0%) according to the frequency order. When the frequency of anatomical variations was evaluated according to gender, septum deviation, concha bullosa, and anterior clinoid process pneumatization were more frequently observed in males and Onodi cell in females (p < 0.05). When the relationships of the anatomical variations with one another were evaluated, it was found that the possibility of the presence of concha bullosa in the septum deviation cases and the presence of ethmoid bulla in the cases with Haller cell septum were higher (p < 0.05). In terms of the anatomical variations that were evaluated by taking age as the independent variable, a statistically significant difference was observed in pterygoid process pneumatization, Haller cell, pneumatized crista galli, ethmoid bulla, and paradoxical middle concha between the adult and children age groups (p < 0.05). Conclusion In terms of the frequency of occurrence to various sinonasal region variations, statistically significant differences were observed between both genders and age groups. The correlations of the detected variations with each other were also remarkable. Consequently, it is believed that comprehensive studies and serious objective evaluations evaluating the change of frequency of anatomical variations according to age and gender besides their correlation with each other are required.

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The Proximity of Mental Foramen to Mandibular First Premolar Teeth: Cone Beam Computed Tomography Analysis in Turkish Population

Balkan Journal of Dental Medicine ◽

10.2478/bjdm-2021-0001 ◽

2021 ◽

Vol 25 (1) ◽

pp. 29-33

Author(s):

Ozkan Adiguzel ◽

Suzan Cangul ◽

Artemisa Adiguzel ◽

Begum Erpacal ◽

Zeki Akkus

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Turkish Population ◽

Mental Foramen ◽

Cone Beam ◽

Age And Gender ◽

Significant Difference ◽

Mandibular First Premolar ◽

And Gender ◽

Gender Groups

SummaryBackground/Aim: The aim of this study was to evaluate the proximity of the mental foramen (MF) to the roots of the mandibular first premolar teeth in the Turkish population according to gender and different age groups.Material and Methods: The study was conducted on 385 samples of 242 patients who presented at the Dicle University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology. The proximity of the MF to mandibular first premolar teeth was examined on cone beam computed tomography (CBCT) images. Two-way Anova variance analysis was used in the statistical analyses of the data.Results: According to the analysis results, no statistically significant difference was determined between the age and gender groups (p>0.05). In the evaluation of the gender groups, the mean value was 6.6997 mm for females and 6.5445 mm for males.Conclusions: With 3-dimensional imaging technology, the CBCT system provides detailed information about the MF localization. This method has shown that the localization of the MF could change associated with variables such as age and gender.

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The Influence of Age and Gender on Mandibular Indices among the Libyan Population

Journal of Oral & Dental Health ◽

10.33140/jodh.03.02.2 ◽

2019 ◽

Vol 3 (2) ◽

Keyword(s):

Negative Correlation ◽

Bone Mineralization ◽

Age Groups ◽

T Test ◽

Chi Square ◽

Age And Gender ◽

Significant Difference ◽

Chi Square Test ◽

And Gender ◽

Libyan Population

Radiographic Mandibular Indices serve as easy and relatively cheap tools for evaluating bone mineralization. Objectives: To examine the effect of age and gender on three mandibular indices: the panoramic mandibular index (PMI), the mandibular ratio (MR) and the mandibular cortical index (MCI), among Libyan population. Methods: The three indices were measured on 317 digital (OPGs) of adult humans (155 males, 162 females). The sample was divided into six age groups (from 18-25 years through 56-65 years). The measurements were analyzed for interactions with age and sex, using SPSS (Statistical Package for Social Studies) software version no. 22. The tests employed were two way ANOVA, the unpaired T-test and chi-square test. Results: The mean PMI fluctuated between 0.37 s.d. 0.012 and 0.38 s.d. 0.012. among the sixth age groups. One-way ANOVA statistical test revealed no significant of age on PMI. On the other hand gender variation has effect on PMI, since independent sample t-test disclosed that the difference between the male and female PMI means statistically significant. ANOVA test showed that the means of MR among age groups showed a negative correlation i.e. MR mean declined from 3.01 in 18-25 age groups to 2.7 in 55-65 age groups. In contrary, the gender showed no effect on MR according two sample t-test at p> 0.05. In regards with MCI, statistical analysis showed that it affected by age that is C1 was decreasing by age while C2 and C3 were increased by age. Using chi square test the result indicated that there is a significant difference among the different age group and the two genders in MCI readings. Conclusion: PMI was influenced significantly by age but minimally by the gender. MR is not affected by gender but has a negative correlation with age. MCI is affected by both age and gender

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A retrospective pilot study of correlation of first maxillary premolar root trunk length with age and gender: a cone beam computed tomography study

Minerva Stomatologica ◽

10.23736/s0026-4970.19.04228-6 ◽

2020 ◽

Vol 69 (1) ◽

Author(s):

Andrea Pilloni ◽

Lorenza Montanaro ◽

Fabiola Dell'olmo ◽

Alberto Fonzar ◽

Francesco Cairo ◽

...

Keyword(s):

Computed Tomography ◽

Pilot Study ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Age And Gender ◽

Trunk Length ◽

And Gender

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

Avicenna Journal of Dental Research ◽

10.34172/ajdr.2020.19 ◽

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).

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The nasopalatine canal and its relationship with the maxillary central incisors: a cone-beam computed tomography study

Research Society and Development ◽

10.33448/rsd-v10i15.22978 ◽

2021 ◽

Vol 10 (15) ◽

pp. e351101522978

Author(s):

Ana Carolina Neves Melgaço de Lima ◽

Dominique A. Peniche ◽

Thais M. C. Coutinho ◽

Fábio R. Guedes ◽

Maria Augusta Visconti ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Average Diameter ◽

Cone Beam ◽

Nasopalatine Canal ◽

Gender And Age ◽

Post Test ◽

Male Patients ◽

And Gender ◽

Student’S T

Objective: To evaluate the dimensions of the nasopalatine canal (NPC) and its relationship with the maxillary central incisors (MCI) using cone-beam computed tomography (CBCT) and to determine variations in the NPC in relation to age and gender. Methods: CBCT scans from 333 patients (67% female; 35.9 ± 14.6 years) were included. The CBCT scan was analyzed to determine the length and diameter of the NPC, the distance between the NPC and the MCI, and to evaluate the morphology of the NPC. The data were analyzed using the independent Student's t-test, the Mann–Whitney and Kruskal–Wallis tests, and Dunn's post-test (p < 0.05). Results: The average diameter and length of the NPC were 2.92 ± 0.91 mm and 12.67 ± 3.32 mm, respectively. The minimum and maximum distance between the MCI and the NPC were 0.78 ± 0.42 mm and 2.56 ± 1.38 mm, respectively. The NPC of male patients was greater in length compared with the female patients (p < 0.05). The majority presented a funnel-like morphology (34.1%), followed by a cylindrical morphology (27.5%). Conclusions: There was variability in the dimensions of the NPC and its relationship with the MCI, which was influenced by gender and age.

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Articular Eminence Inclination, Height, and Condyle Morphology on Cone Beam Computed Tomography

The Scientific World JOURNAL ◽

10.1155/2014/761714 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 24

Author(s):

Dilhan İlgüy ◽

Mehmet İlgüy ◽

Erdoğan Fişekçioğlu ◽

Semanur Dölekoğlu ◽

Nilüfer Ersan

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Mean Value ◽

Cone Beam ◽

Articular Eminence ◽

Age And Gender ◽

Mean Values ◽

The Mean ◽

And Gender ◽

The Relationship

Aim. The aim of the present study was to examine the relationship between articular eminence inclination, height, and thickness of the roof of the glenoid fossa (RGF) according to age and gender and to assess condyle morphology including incidental findings of osseous characteristics associated with osteoarthritis (OA) of the temporomandibular joint (TMJ) using cone beam computed tomography (CBCT).Materials and Methods. CBCT images of 105 patients were evaluated retrospectively. For articular eminence inclination and height, axial views on which the condylar processes were seen with their widest mediolateral extent being used as a reference view for secondary reconstruction. Condyle morphology was categorized both in the sagittal and coronal plane.Results. The mean values of eminence inclination and height of males were higher than those of females (P<0.05). There were significant differences in the RGF thickness in relation to sagittal condyle morphology. Among the group of OA, the mean value of the RGF thickness for “OA-osteophyte” group was the highest (1.59 mm), whereas the lowest RGF values were seen in the “OA-flattening.”Conclusion. The sagittal osteoarthritic changes may have an effect on RGF thickness by mechanical stimulation and changed stress distribution. Gender has a significant effect on eminence height (Eh) and inclination.

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Measuring anxiety about aging across the adult lifespan

International Psychogeriatrics ◽

10.1017/s1041610213001798 ◽

2013 ◽

Vol 26 (1) ◽

pp. 135-145 ◽

Cited By ~ 13

Author(s):

Kerry A. Sargent-Cox ◽

Masori Rippon ◽

Richard A. Burns

Keyword(s):

Measurement Invariance ◽

Age Groups ◽

Age And Gender ◽

Adult Lifespan ◽

Gender And Age ◽

And Gender ◽

Aging Attitudes ◽

And Behavior ◽

Attitudes And Behavior ◽

Order Four

ABSTRACTBackground:The development of instruments to measure aging attitudes is an essential part of research into the role of individual differences in the aging process, giving clarification to the relationship between attitudes and behavior across the lifespan. Here we test the structural validity of Lasher and Faulkender's (1993) Anxiety about Aging Scale (AAS), and explore measurement invariance across age and gender.Methods:A sample of 783 adults (42% females) age ranging from 20 to 97 years (M = 57.3, SD = 13.66) participated.Results:The first-order four-factor AAS model reflecting the original Lasher and Faulkender (1993) structure showed a better fit to the data than the second-order model. Measurement invariance for both gender and age groups (young adults 20–44 years; mid-aged adults 45–64 years, older adults 65+ years old) was found for three of the factors, but not for all items in the Fear of Losses factor. Structural covariance inequality between the Fear of Losses and Physical Appearance factors was shown between males and females.Conclusions:Findings indicate that the original AAS measures four distinct dimensions of anxiety about aging. These dimensions were shown to be generally comparable across age and gender, indicating that the AAS is a suitable measure for providing meaningful comparison of anxiety about aging across the lifespan. The exception is the Fear of Losses factor, where items may have differential meanings across groups based on cultural and social attitudes regarding aging and gender.

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