Morphometric analysis of articular eminence of temporomandibular joint in Indian Ethinicity-A cone beam computed tomography study (original) (raw)
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Radiological examination of the articular eminence morphology using cone beam CT
Dentomaxillofacial Radiology, 2012
The purpose of the present study was to investigate the articular eminence inclination and height according to age and gender in patients with temporomandibular joint (TMJ) dysfunction and healthy controls using cone beam CT (CBCT). Methods: The measurements were performed on CBCT records of 52 TMJ dysfunction patients (11 males and 41 females) and 41 control patients (17 males and 24 females). The eminence inclination and height were measured on the CBCT images. Results: The eminence inclination and height values were higher in males than in females in both TMJ dysfunction patient and control groups; however, these differences were not statistically significant (p. 0.05). While no statistically significant differences were found in the eminence inclination and height values between the age groups (p. 0.05) in the TMJ dysfunction patient group, there were statistically significant differences in the control group. The eminence inclination was highest between the ages of 21 and 30 years and showed a decrease after the age of 30 years. Additionally, the eminence inclinations of the control patients were statistically higher than those of the TMJ dysfunction patients. Conclusion: There were no statistically significant differences in eminence inclination and height according to gender. The eminence inclination reaches its highest value between the ages of 21 and 30 years and shows a decrease after the age of 31 years in healthy patients. The eminence inclination was steeper in healthy control patients than in patients with TMJ dysfunction.
Assesment of morphological changes of articular eminence and condyle using CBCT
IP innovative publication pvt. ltd, 2019
Objectives: To measure the inclination 1. Height of articular eminence using CBCT; 2. To measure the length and width of condyles using CBCT. 3. To evaluate and compare above changes in pain and non painful joints. Aim: The aim of the present study is to assess the morphological changes of articular eminence and condyle in temporomandibular joint disorder patients. Materials and Methods: This study was conducted on 50 patients (i.e.100 joints), in which 23 are males and the rest 27 are females. These 50 patients are divided into two groups, in which, patients with painful joints are considered as study group and non painful joints were kept as control group. Statistical Analysis and Results: Independent sample t-test was used to determine the differences in height and inclination of articular eminence and condylar length and width. Pearson correlation coefficient used to find the relation between two quantitative variables of articular eminence height and inclination with condylar width and length. There exists no difference in pain and non painful joints in TMJ patients (p>0.05). Conclusion: In the present study there were no significant changes in morphology of articular eminence and condyle in pain and non painful joints.
Journal of Orofacial Research, 2020
Background: Occlusion is an important component of the temporomandibular joint (TMJ). Little is known about the association between missing teeth and TMJ changes. The objective of this study was to compare inclination of the articular eminence (AE) between dentulous and edentulous arch. Method: A total of 500 patients were divided into group A (dentulous) and group B (edentulous). Group B was further divided into subgroups based on years of edentulism into group 1, group 2 and group 3. On patient’s panoramic radiograph, the sagittal outline of the AE and glenoid fossa were traced, and a sagittal condylar path inclination was constructed by joining the crest of the glenoid fossa and the crest of AE. This was then related to the constructed Frankfurt’s horizontal plane to determine the inclination of AE. Results: The mean measured value for the AE inclination was varying with all the groups. The mean and standard deviation value (combining right & left) for Group A was 42.8+/-6.83 deg...
Articular Eminence Inclination, Height, and Condyle Morphology on Cone Beam Computed Tomography
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.
Cranio-the Journal of Craniomandibular Practice, 2000
The purpose of this study was to compare a computer-aided method specially programmed for the measurement of the posterior angle of the articular eminence with formerly used methods, to investigate the angulation differences at different depths of slices, and to evaluate correlation with the transverse angulation. Three slices (central, medial, and lateral) at various depths of the glenoid fossa belonging to 64 dry skulls and two measurement methods were used in this study. The angulation of the articular eminence were measured and the transverse angle of each fossa calculated. No statistical difference was fou nd between the articular eminence results of the two methods. According to the results, the one factor ANOV A central slice was fou nd to be statistically steeper than the other two slices (p<0.05) (central = 60.33 ± 1 0.19, medial = 58.26 ± 8.6, lateral 58.28 ± 10.1). No correlation was found between the transverse angle of the inclination of the posterior slope angulation. lt was concluded that the computer-aided method is more reliable and accurate and is much easier to use when compared to the manual method. An additional important finding of this study is that the inclination of the articular eminence should be evaluated at various depths of the temporomandibular joint.
Cumhuriyet Dental Journal
Objectives: This study aimed to analyze the articular eminence inclination and height and correlate these findings with the eminence shapes and degenerative condylar changes using cone-beam computed tomography (CBCT). Materials and Methods: The assessments were established on CBCT images of 566 temporomandibular joints (TMJ) that were included from the computer database. Age and gender were recorded for all individuals. Degenerative changes were examined in the articular surface of the condyle. The articular eminence (AE) inclination and height measurements were performed on central parasagittal slices of the TMJ. The shape of the AE was classified as box, sigmoid, flattened, and deformed. Results: The prevalence of degenerative changes in the condyle was higher in males, but no significant difference was found (p ˃ 0.05). The AE inclination and height have a relation with gender and age groups. The AE inclination and height results were greater in males (p < 0.05). The reduced m...
Journal of international oral health : JIOH, 2015
The aim of this study was to verify the intra-individual reproducibility of natural head position (NHP) in centric relation (CR) position, to prove the inter-individual differences in the Frankfort horizontal plane and sella-nasion line compared with the true horizontal line, and to establish linear norms from A-point, B-point, Pog as well as soft tissue A-point, soft tissue B-point, and soft tissue Pog to nasion true vertical line (NTVL) in adult Indian subjects. Lateral cephalograms (T1) of Angle's Class I subjects were taken in NHP and with bite in CR. A second lateral cephalogram (T2) of these subjects with ANB angle in the range 1-4° were taken after 1 week using the same wax bite and both the radiographs were analyzed based on six angular parameters using cephalometric software (Do-it, Dental studio NX version 4.1) to assess the reproducibility of NHP. Linear values of six landmarks were taken in relation to NTVL, and the mean values were calculated. A total of 116 subject...
Articular Eminence Inclination in Medieval and Contemporary Croatian Population
Articular eminence inclination (AEI) of the temporomandibular joint leads the mandible in its movements. Th erefore, the aim of the present study was to determine AEI values in medieval (MP) and recent (RP) Croatian population. Th e study was carried out on two groups of specimens: fi rst group with 30 MP human dry skulls, while the other, serving as control group consisted of 137 dry skulls. Th e AEI was measured on lateral digital skull images as the angle between the best fi t line drawn along the posterior wall of the articular eminence and the Frankfurt horizontal plane. No statistically signifi cant (p>0.05) diff erences between the left and right side AEI were found between MP skulls and RP skulls. Th e mean value of MP AEI was 45.5˚, with a range of 20.9˚-64˚. Th e mean RP AEI value was steeper (61.99˚), with a range of 30˚-94˚. Diff erence between the mean MP and RP AEI values was statistically signifi cant (p<0.05). Values of AEI vary a lot. Nonsignifi cant diff erences between the left and right side AEI confi rmed the natural left-right side asymmetry. Th e values of AEI diff er between the RP and MP groups, most probably due to diff erent type of food consumption in medieval time, and consequently diff erent masticatory loads and forces.
Association between temporomandibular disorders and asymmetrical articular eminence
Journal of International Dental and Medical Research, 2019
Articular eminence (AE) can lead to rapid degeneration due to heavy occlusal loads. Asymmetrical AE is common in individuals with temporomandibular disorders (TMD). It is also associated with gender, age, occlusion, missing teeth, and sleep bruxism. Therefore, further research is required to analyze the relationship between these conditions and asymmetrical AE, and we examined the associations between TMD diagnoses and asymmetrical AE inclination. This research implemented a cross-sectional study in the diagnosis process using diagnostic criteria for TMD and transcranial radiographs from 70 subjects (14 male and 56 female) aged 20 years and older. A one-way analysis of variance was used to determine the association between TMD diagnoses and asymmetrical AE. An independent t-test was used to determine the association between gender, age, occlusion, missing teeth, and sleep bruxism to asymmetrical AE. A chisquare test was used to determine the influence of gender, age, occlusion, miss...