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Forensic Gender Determination by Using Mandibular Morphometric Indices an Iranian Population: A Panoramic Radiographic Cross-Sectional Study. J Imaging 2023; 9:jimaging9020040. [PMID: 36826959 PMCID: PMC9960296 DOI: 10.3390/jimaging9020040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/27/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
Gender determination is the first step in forensic identification, followed by age and height determination, which are both affected by gender. This study assessed the accuracy of gender estimation using mandibular morphometric indices on panoramic radiographs of an Iranian population. This retrospective study evaluated 290 panoramic radiographs (145 males and 145 females). The maximum and minimum ramus width, coronoid height, condylar height, antegonial angle, antegonial depth, gonial angle, and the superior border of mental foramen were bilaterally measured as well as bicondylar and bigonial breadths using Scanora Lite. Correlation of parameters with gender was analyzed by univariate, multiple, and best models. All indices except for gonial angle were significantly different between males and females and can be used for gender determination according to univariate model. Condylar height, coronoid height, and superior border of mental foramen and ramus were still significantly greater in males than in females after controlling for the effect of confounders (p < 0.05). Based on the best model, a formula including five indices of bicondylar breadth, condylar height, coronoid height, minimum ramus width, and superior border of mental foramen was used for gender determination. Values higher than 56% indicate male gender, while lower values indicate female gender, with 81.38% specificity for correct detection of females and 88.97% sensitivity for correct detection of males. Despite the satisfactory results, future research should focus on larger populations to verify the accuracy of the present findings.
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Goyushov S, Asar NV, Tözüm TF. Assessment of Radiodensity at Mandibular Periapical Bone Sites using Three-Dimensional Cone-Beam Computed Tomography. J Oral Maxillofac Res 2023; 14:e2. [PMID: 37180408 PMCID: PMC10170661 DOI: 10.5037/jomr.2023.14102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 03/24/2023] [Indexed: 05/16/2023]
Abstract
Objectives The aims of this retrospective study were to objectively assess bone density values obtained by cone-beam computed tomography and to map the periapical and inter-radicular regions of the mandibular bone. Material and Methods In total, periapical bone regions of 6898 roots scanned by cone-beam computed tomography were evaluated retrospectively, and the results were recorded using Hounsfield units (HU). Results The correlation between periapical HU values of adjacent mandibular teeth were strongly positive (P ˂ 0.01). The anterior region of the mandible yielded highest mean HU value (633.55). The mean periapical HU value of the premolar region (470.58) was higher than that was measured for molar region (374.58). The difference between furcation HU values of the first and second molars was unnoticeable. Conclusions The results of this study have tried to evaluate the periapical regions of all mandibular teeth, which could ease to predict the bone radiodensity before implant surgery. Even though the Hounsfield units provide the average radio-bone density, a site-specific bone tissue evaluation of each case is essential for appropriate cone-beam computed tomography preoperative planning.
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Affiliation(s)
- Samir Goyushov
- Department of Periodontology, Faculty of Dentistry, Istanbul Aydin University, IstanbulTurkey
| | - Neset Volkan Asar
- Department of Prosthodontics, Faculty of Dentistry, Gazi University, AnkaraTurkey
| | - Tolga Fikret Tözüm
- Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IllinoisUSA
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Mascaro MB, Picoli LC, Reis Matos ST, Sipos Lotaif SC, De Souza MR, Calderon MF. Anatomical Variation in the Mandibular Foramen in Non-Atrophic and Atrophic Mandibles. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2021; 11:e4. [PMID: 33598112 PMCID: PMC7875102 DOI: 10.5037/jomr.2020.11404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 12/28/2020] [Indexed: 11/29/2022]
Abstract
Objectives Previous studies of variation in mandibular foramen characteristics with age have involved comparison in different populations, but few data, between non-atrophic and atrophic mandibles are available. The aim of this original article was to compare the position, shape and area of the mandibular foramen between non-atrophic and atrophic mandibles. Material and Methods Morphometric methods were used to study the mandibular foramen variation. Fifty adult dry mandibles from the laboratory of anatomy were selected. Mandibles were considered non-atrophic if the distance between the base and alveolar ridge was homogeneous and greater than 25 mm in the anterior region and 20 mm in the posterior region. Conversely, mandibles were considered atrophic if that distances were lower than those described to a minimum of 11 mm in all areas. All measurements were performed with a digital caliper. For statistical analysis, the admitted level of significance was 5%. Results When non-atrophic mandibles were compared to atrophic ones, the mandibular foramen shifted significantly to an anterior position (mean difference [MD]: 4.81 mm; P < 0.0001) and to an inferior position (MD: 3.04 mm; P < 0.0001) and changed from an elliptical shape to round one, with a significant decrease in its area (MD: 3.66 mm2; P < 0.05). Conclusions The results indicate that there are significant differences in the position, shape and area of the mandibular foramen between non-atrophic and atrophic mandibles. These data should be considered in anaesthetic techniques and surgical procedures to prevent vascular and nervous lesions.
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Affiliation(s)
- Marcelo Betti Mascaro
- Discipline of Morphology, School of Dentistry, Nove de Julho University (UNINOVE), São Paulo, SPBrazil
| | - Lara Cristina Picoli
- Discipline of Morphology, School of Dentistry, Nove de Julho University (UNINOVE), São Paulo, SPBrazil
| | - Stefany Torres Reis Matos
- Discipline of Morphology, School of Dentistry, Nove de Julho University (UNINOVE), São Paulo, SPBrazil
| | | | - Mônica Rodrigues De Souza
- Discipline of Morphology, School of Dentistry, Nove de Julho University (UNINOVE), São Paulo, SPBrazil
| | - Marcelo Ferreira Calderon
- Discipline of Morphology, School of Dentistry, Nove de Julho University (UNINOVE), São Paulo, SPBrazil
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Evaluation of Antegonial Angle and Antegonial Depth to Estimate Sex in a Prepubertal Turkish Population. Am J Forensic Med Pathol 2020; 41:194-198. [DOI: 10.1097/paf.0000000000000579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abdinian M, Salehi MM, Mortazavi M, Salehi H, Kazemi Naeini M. Comparison of dental and skeletal indices between patients under haemodialysis and peritoneal dialysis with healthy individuals in digital panoramic radiography. Dentomaxillofac Radiol 2020; 50:20200108. [PMID: 32706991 DOI: 10.1259/dmfr.20200108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The aim was to compare dental and skeletal indices in panoramic radiography between patients undergoing haemodialysis, peritoneal dialysis and age- and sex-matched control group. METHODS In this comparative cross-sectional study, quantitative Indices including Antegonial Index (AI), Mental Index (MI), Panoramic Mandibular Index (PMI) and qualitative indices including Mandibular Cortical Index (MCI) and Trabecular Pattern (TP) were evaluated in panoramic images of 32 haemodialysis patients, 14 patients under peritoneal dialysis and 52 healthy individuals. The images were also investigated for pulp canal calcification, pulp stones, soft tissue calcification, changes in or loss of lamina dura, radiolucencies associated with brown tumour and ridge resorption. The indices were compared between the three groups and were investigated for association with the patients' blood test parameters and their diseases causing chronic renal failure (CRF). Intraobserver agreement for the 2-week interval of assessment was calculated for the indices. RESULTS MI (p = 0.574) and PMI (p = 0.100) were not significantly different, but AI (p = 0.01), MCI (p < 0.001) and TP (p = 0.002) were significantly different between the two case groups and the control group. The prevalence of pulp calcification (p = 0.03) and ridge resorption (p = 0.005) was higher in the haemodialysis group. Soft tissue calcification (p = 0.85) and lamina dura changes (p = 0.9) showed no significant difference. Brown tumours were observed in only one case in the haemodialysis group. CONCLUSIONS AI, MCI and TP showed a reduction in mineral density of the cortical and trabecular bone in CRF patients and more severely in patients under haemodialysis than those under peritoneal dialysis.
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Affiliation(s)
- Mehrdad Abdinian
- Department of Radiology, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Mahdi Salehi
- Dental Students' Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mojgan Mortazavi
- Isfahan Kidney Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hassan Salehi
- Department of Infectious Diseases, Medical school, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Kazemi Naeini
- Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
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Goyushov S, Dursun E, Tözüm TF. Mandibular cortical indices and their relation to gender and age in the cone-beam computed tomography. Dentomaxillofac Radiol 2020; 49:20190210. [PMID: 31714158 PMCID: PMC7068079 DOI: 10.1259/dmfr.20190210] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The purpose of this study is to evaluate normal ranges of cortical bone Hounsfield units indices through cone beam CT images, and to investigate their relationships with age and sex. METHODS 700 adult human cone beam CT images were evaluated retrospectively, and divided into 4 age groups. Six different cortical bone Hounsfield unit measurements were applied bilaterally, where gender and age were recorded. Collected data were subjected to statistical analysis and ANOVA tests were used for various comparisons. RESULTS The cortical bone measurements between female and male patients were significantly different (p<0.05). Cortical bone thickness indices showed greater values in male patients compare to female patients (p<0.05). Quantitative mandibular indices were significantly lower in first age group (18-30 years) than other three older age groups (p<0.01). CONCLUSION The results of this study seems to propose a persistent alteration in the mandibular cortical bone with age and that this influced by sex. Further studies with larger patient groups are needed to clarify and understand these mandibular indices.
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Affiliation(s)
- Samir Goyushov
- Department of Periodontology, Faculty of Dentistry, Istanbul Aydin University, Istanbul, Turkey
| | - Erhan Dursun
- Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Tolga Fikret Tözüm
- Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
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Saati S, Foroozandeh M, Alafchi B. Radiographic Characteristics of Soft Tissue Calcification on Digital Panoramic Images. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2020. [DOI: 10.1590/pboci.2020.068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Fouda SM, Gad MM, El Tantawi M, Virtanen JI, Sipila K, Raustia A. Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study. J Clin Exp Dent 2019; 11:e814-e819. [PMID: 31636874 PMCID: PMC6797444 DOI: 10.4317/jced.55879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 08/23/2019] [Indexed: 11/22/2022] Open
Abstract
Background Tooth loss adversely affects patients’ health and psychosocial wellbeing. In addition, it changes mandibular morphology. Objective: To evaluate the effect of tooth loss, age, and gender on mandibular morphology. Material and Methods Cone-beam computed tomographic (CBCT) scans of 101 patients were examined to measure the gonial angle (GA), ramus height (RH) and condylar height (CH). Patients’ age, gender, and dental status were recorded. Repeated measures analysis of variance (ANOVA) was used to assess the impact of gender, age, and tooth loss on the GA, RH and CH. The mean measurements of the GA, RH and CH were compared between dentate/edentulous patients after splitting by gender. Results The GA was larger in edentulous patients compared to dentate ones, in females than in males, and in older than in younger. RH on the right side was significantly longer than on the left side (P< 0.0001), and also longer in males and younger patients. CH was shorter in younger than in older patients and in dentate than in edentulous patients. Conclusions Tooth loss is associated with changes in mandibular morphology and its prevention would avoid these irreversible changes. Key words:Tooth loss, mandibular morphology, Cone-Beam computed tomography, gender, age.
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Affiliation(s)
- Shaimaa-Mohamed Fouda
- MSc. Lecturer, Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mohammed M Gad
- MSc. Lecturer, Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Maha El Tantawi
- Professor, Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Jorma I Virtanen
- PhD. Adjunct Professor, Department of Community Dentistry, Faculty of Medicine, University of Turku, 20014 Turku, Finland.,PhD. Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Kirsi Sipila
- PhD. Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.,PhD. Professor, Research Unit of Oral Health Sciences, Prosthetic Dentistry and Stomatognathic Physiology, Faculty of Medicine, University of Oulu, P.O. Box 5281, 90014 Oulu, Finland
| | - Aune Raustia
- PhD. Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.,PhD. Professor, Research Unit of Oral Health Sciences, Prosthetic Dentistry and Stomatognathic Physiology, Faculty of Medicine, University of Oulu, P.O. Box 5281, 90014 Oulu, Finland
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Koseoglu Secgin C, Gulsahi A, Yavuz Y, Kamburoglu K. Comparison of mandibular index values determined from standard panoramic versus cone beam computed tomography reconstructed images. Oral Surg Oral Med Oral Pathol Oral Radiol 2018; 127:257-264. [PMID: 30497908 DOI: 10.1016/j.oooo.2018.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 08/28/2018] [Accepted: 10/15/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this study was to compare mandibular index values, including the mandibular cortical index (MCI), mental index (MI), and panoramic mandibular index (PMI), determined on the basis of cone beam computed tomography (CBCT) and panoramic reconstructed (PR) images. STUDY DESIGN PR and CBCT images of 182 patients were retrospectively analyzed. Cross-sectional (CS) and PR images were obtained from CBCT data. The MCI, MI, and PMI were assessed on CS, PR, and panoramic images and evaluated for intra- and interobserver agreements by κ-value or intraclass correlation coefficient (ICC) analysis. Agreement among measurement methods was assessed by using the Bland-Altman method, with CS images as the gold standard for linear measurements. RESULTS Measurements from PR and CS images agreed with those from panoramic images in 66.7% and 53.8% of C3 classifications of MCI (porous cortices forming many endosteal residues), respectively. Panoramic and CBCT images exhibited good agreement in MI findings (ICC 0.91) and moderate (PR and panoramic images: ICC 0.79) to good (CS and panoramic images: ICC 0.87) agreement in PMI findings. CONCLUSIONS Because of the overlapping of buccal and lingual cortices, panoramic images are especially inadequate for determining the C3 category of MCI. However, CS images obtained from available CBCT data provide better visibility compared with panoramic images and, therefore, can be used for evaluating mandibular indices.
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Affiliation(s)
- Cansu Koseoglu Secgin
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Baskent University, Ankara, Turkey.
| | - Ayse Gulsahi
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Baskent University, Ankara, Turkey
| | - Yasemin Yavuz
- Department of Biostatistics, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Kivanc Kamburoglu
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey
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Asaumi R, Kawai T, Miwa Y, Sunohara M, Sato I. CBCT imaging of the alveolar bone structure in maxilla of elderly donor cadavers and PCA analysis. Okajimas Folia Anat Jpn 2018; 95:1-7. [PMID: 30101947 DOI: 10.2535/ofaj.95.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
There is an important bone matrix with remodelling between dentate and edentulous samples of the human maxilla for bone metabolism. Cone beam computed tomography (CBCT) is useful for structural analysis of bone. The objective of this study was to investigate morphological data of donor cadavers in detail using CBCT imaging and principal component analysis (PCA). We analysed 38 donor cadavers using a CBCT apparatus. The analytical results defined differences in skull measurement parameters and dentate and edentulous levels using PCA. We observed cortical bone, trabecular bone, and the distance from the bottom of the maxillary sinus to the oral mucosa at a right angle to the palatal plane of the first molar region between dentate and edentulous samples of the human maxilla using CBCT imaging. In the dentate sample of the maxilla, component 1 was defined by negative contributions from gender (-0.84) and age (-0.54) to positive contributions such as cortical bone structure (CBS, 0.68) and trabecular bone structure (TBS, 0.50). There was a difference in CBS between dentate and edentulous human maxilla samples. This study of CBCT data provides useful basal information for planning dental implant surgery using PCA.
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Affiliation(s)
- Rieko Asaumi
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University
| | - Taisuke Kawai
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University
| | - Yoko Miwa
- Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University
| | - Masataka Sunohara
- Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University
| | - Iwao Sato
- Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University
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Secgin CK, Kulah CK, Gulsahi A. Analysis of mandibular changes using panoramic-based indices in patients with chronic renal failure. Int J Artif Organs 2017; 41:0. [PMID: 28967087 DOI: 10.5301/ijao.5000649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2017] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Chronic renal failure (CRF) is a progressive disease affecting many systems and causing dental and periodontal problems, in particular a decrease or loss in the amount of cortical bone that is visible on radiographs. Panoramic radiography is useful for determining these changes. The aim of this study was to evaluate cortical parts of the mandible using panoramic-based indices in patients with CRF. METHODS 70 subjects with CRF were included in the study. The measurements of panoramic indices were made according to the visibility (mandibular cortical index, MCI) and thickness (mental index, MI) of the inferior cortex of the mandible. Then, these indices, obtained from 70 healthy controls of the same age and gender, were assessed and the results were compared. The effects of dental status and hemodialysis duration on MCI and MI were also investigated. RESULTS The frequency of an eroded cortex was significantly elevated in patients with CRF (p<0.05). The mean MI was lower in patients with CRF than in healthy subjects (5.53 ± 1.62 and 5.73 ± 1.31 mm, respectively), but the difference was not statistically significant (p>0.05). No correlation was found between hemodialysis duration and mandibular indices (p>0.05). Dental status was not associated with mandibular indices (p>0.05). CONCLUSIONS These results suggest that MCI might be a useful radiographic parameter for evaluating changes occurring in the cortical parts of the mandible in CRF patients. Clinicians should be aware of these changes while planning invasive dental treatments in CRF patients.
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Affiliation(s)
- Cansu K Secgin
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Baskent University, Ankara - Turkey
| | - Cemal K Kulah
- Department of Dentomaxillofacial Radiology, Antalya - Turkey
| | - Ayşe Gulsahi
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Baskent University, Ankara - Turkey
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Ozcan G, Sekerci AE, Gönen ZB. Are there any differences in mandibular morphology of patients with bisphosphonate-related osteonecrosis of jaws?: a case-control study. Dentomaxillofac Radiol 2016; 45:20160047l. [PMID: 27181052 PMCID: PMC5124773 DOI: 10.1259/dmfr.20160047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/01/2016] [Accepted: 05/11/2016] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVES: The aim of this study was to compare the morphological differences in the mandible between patients with bisphosphonate-related osteonecrosis of the jaw (BRONJ) and healthy individuals and to detect the correlation between these parameters on panoramic radiography and CBCT. METHODS: The CBCT and panoramic images of patients with BRONJ (n = 32) and control groups (n = 32) were included in the study. All the comparisons were analyzed between the osteonecrosed and healthy sides of patients with BRONJ and control group. The panoramic radiographs were used to measure the values of the condyle angle, gonial angle, antegonial angle, antegonial depth, condylar height and ramal height. The mandibular cortical index (MCI) and bone quality index (BQI) were also examined on cross-sectional scans of CBCT images. RESULTS: There were significant differences in the MCI (p = 0.014) and BQI (p = 0.021) between the left and right side of the BRONJ group and also between the osteonecrosed side of the BRONJ and control group (p < 0.0001). No significant difference was found in other comparisons. CONCLUSIONS: The outcomes of the present study indicate that bisphosphonates influenced some internal morphological changes in the mandible. These changes may be a reason of BRONJ. But, these changes are not reflective of the measured values obtained using panoramic radiographs on the external morphology of the mandible.
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Affiliation(s)
- Gozde Ozcan
- Department of Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Ahmet E Sekerci
- Department of Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Zeynep B Gönen
- Department of Maxillofacial Surgery, Faculty of Dentistry, Genome and Stem Cell Center, Erciyes University, Kayseri, Turkey
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Leversha J, McKeough G, Myrteza A, Skjellrup-Wakefiled H, Welsh J, Sholapurkar A. Age and gender correlation of gonial angle, ramus height and bigonial width in dentate subjects in a dental school in Far North Queensland. J Clin Exp Dent 2016; 8:e49-54. [PMID: 26855706 PMCID: PMC4739368 DOI: 10.4317/jced.52683] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 10/02/2015] [Indexed: 11/12/2022] Open
Abstract
Background This study aimed to determine if mandibular parameters (gonial angle, bigonial width and ramus height) measured from panoramic radiographs, can be used to determine a correlation with an individual’s age and gender in dentate subjects in Far North Queensland. Material and Methods The study utilised 2699 randomly selected panoramic radiographs of patients between the ages of 19-69 years, from which 220 fulfilled the inclusion criteria. Each panoramic radiograph was analysed and the above three parameters recorded and measured. These values were collated into appropriate age and gender groups and subjected to statistical analysis. Results The mean age of the participants was 44.1±14.41, with males being shown to have a statistically significant larger ramus height and bigonial width than females (P<0.0001 for both). Females, on the other hand, were shown to have a significantly larger gonial angle than males (P<0.0002). General trends revealed gonial angle to increase with age, whilst bigonial width and ramus height were shown to decrease with age. Conclusions The assessment of mandibular morphology through radiographic measurements may be useful in estimating an individual’s age and gender when comparing to a known population standard. Key words:Bigonial width, gonial angle, panoramic radiograph, ramus height.
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Affiliation(s)
- Jodi Leversha
- BDS, College of Medicine and Dentistry, James Cook University, 14-88 McGregor Rd, Smithfield. Cairns. QLD. 4878. Australia
| | - Glen McKeough
- BDS, College of Medicine and Dentistry, James Cook University, 14-88 McGregor Rd, Smithfield. Cairns. QLD. 4878. Australia
| | - Adriana Myrteza
- BDS, College of Medicine and Dentistry, James Cook University, 14-88 McGregor Rd, Smithfield. Cairns. QLD. 4878. Australia
| | - Hannah Skjellrup-Wakefiled
- BDS, College of Medicine and Dentistry, James Cook University, 14-88 McGregor Rd, Smithfield. Cairns. QLD. 4878. Australia
| | - Jordan Welsh
- BDS, College of Medicine and Dentistry, James Cook University, 14-88 McGregor Rd, Smithfield. Cairns. QLD. 4878. Australia
| | - Amar Sholapurkar
- BDS, MDS, College of Medicine and Dentistry, James Cook University, 14-88 McGregor Rd, Smithfield. Cairns. QLD. 4878. Australia
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Bozdag G, Sener S. The evaluation of MCI, MI, PMI and GT on both genders with different age and dental status. Dentomaxillofac Radiol 2015; 44:20140435. [PMID: 26133366 DOI: 10.1259/dmfr.20140435] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The aim of this study was to measure the mandibular cortical index (MCI), mental index (MI), panoramic mandibular index (PMI) and cortical bone thickness in the zone of the gonial angle (GT) in panoramic radiographies from a large sample of males and females and to determine how they relate to patients' age, gender and dental status. METHODS 910 panoramic radiographs were obtained and grouped into age, dental status and gender. The MCI, MI, PMI and GT were analysed. RESULTS Remarkable differences were observed for MCI and GT regarding gender, age groups and dental status on both sides (p < 0.05). While age and dental status had an effect on the MI and PMI in females, dental status had an effect on the MI and PMI in males (p < 0.05). Also, gender had an effect on the MI and PMI (p < 0.05). CONCLUSIONS The effects of age and tooth loss are different in females and males. In females, the harmful effects of tooth loss and age are more prominent according to the PMI and MI measurements. The effects of age and tooth loss in the GT and MCI measurements are similar, and these indices can be accepted as more reliable in studies including both genders.
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Affiliation(s)
- G Bozdag
- Department of Oral Radiology, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
| | - S Sener
- Department of Oral Radiology, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
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Çağlayan F, Dağistan S, Keleş M. The osseous and dental changes of patients with chronic renal failure by CBCT. Dentomaxillofac Radiol 2015; 44:20140398. [PMID: 25629722 DOI: 10.1259/dmfr.20140398] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The aim of the present study was to evaluate the osseous changes of the jaws of patients with chronic renal failure (CRF) by CBCT. METHODS On CBCT scans obtained from 15 patients with CRF and 15 control patients (7 males and 8 females), the mean was calculated for the antegonial index (AI), mental index (MI), panoramic mandibular index (PMI) and mandibular cortical index (MCI). The MI, AI and PMI, pulp chamber size, number of teeth with pulp calcification and lamina dura loss were compared using the paired t-test, and the MCI values were analysed using the χ(2) test. RESULTS There were no statistically significant differences in the PMI, MI and AI values in patients with CRF and the control group. With regard to MCI, the cortical margins of the mandible were more porous in patients with CRF than in the control group, and also soft-tissue calcifications, lamina dura loss and radiolucent defects were more common in patients with CRF. There were no statistically significant differences in pulp chamber size and pulp calcifications between patients with CRF and the control group. CONCLUSIONS Radiographic changes in the jawbones of patients with CRF may be commonly seen. CBCT is a valuable diagnostic tool for the evaluation of osseous findings, pulp chamber, soft-tissue calcifications and MCIs and allows indices measurement in three dimensions without any superposition.
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Affiliation(s)
- F Çağlayan
- 1 Department of Oral Dental and Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkey
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