Trabecular bone ratio of the mandibular condyle according to the presence of teeth: a micro-CT study

Choi, Da Yae; Sun, Ke; Won, Soyoung; Lee, J. G.; Hu, Kyung Seok; Kim, K. D.; Kim, H. J.

doi:10.1007/s00276-012-0943-x

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…Choi et al . [ 28 ] reported on the same issue, but his results specified the presence of molars to be the important factor affecting condyle density. Despite being significant factor, the dentition status remained outside the scope of our study.…”

Section: Discussionmentioning

confidence: 98%

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Usefulness of measuring bone density of mandibular condyle in patients at risk of osteoporosis: A cone beam computed tomography study

2018

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Objective:Using cone beam computed tomography (CBCT) images, the aim of the study was to evaluate the usefulness of measuring bone density of mandibular condyle (BDMC) in patients at risk of osteoporosis.Materials and Methods:Two hundred and four mandibular condyles (46 condyles from males and 158 condyles from females) were examined by CBCT. Using inVivo software (Anatomage, San Jose, Calif), BDMC and mental index (MI) were measured by two observers and correlated using Pearson's correlation coefficients. Patients were divided into high risk and low risk of osteoporosis using 3.1 mm of MI as a cutoff value, and the mean value of BDMC was compared and correlated using independent samples t-test and regression analysis. Receiver-operating characteristic (ROC) curve analyses were also used to examine the predictive power of BDMC.Results:The mean value of BDMC was moderately correlated with MI (r = 0.38), and in female patients at low risk of osteoporosis, the mean value of BDMC was significantly higher than in patients at high risk of osteoporosis. In multivariate linear regression analysis, being at risk of osteoporosis is significantly affected by BDMC, age, and gender. ROC analysis showed that the mean value of BDMC had a moderate predictive power for predicting patients at risk of osteoporosis (area under the curve = 0.621 for females and 0.649 for males).Conclusions:Measuring BDMC is considered useful in predicting patients at risk of osteoporosis.

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Section: Discussionmentioning

confidence: 98%

“…Despite being significant factor, the dentition status remained outside the scope of our study. In the same study of Choi et al .,[ 28 ] they found that age was affecting factor when it comes to condyle density in both males and females as measured from micro-CT scan. In our study, the age was a significant factor for females only.…”

Section: Discussionmentioning

confidence: 99%

Usefulness of measuring bone density of mandibular condyle in patients at risk of osteoporosis: A cone beam computed tomography study

2018

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“…Temporomandibular joint osteoarthrosis is considered to be closely related to age and gender 3 . Evidence indicates significant differences in osseous structures and masticatory system function between males and females 6‐8 . Males present a lower severity of bone destruction and lower prevalence of TMJOA symptoms; the male‐to‐female ratio of individuals suffering from TMJOA is approximately 1:2 9,10 …”

Section: Introductionmentioning

confidence: 99%

Association of temporomandibular joint osteoarthrosis with dentoskeletal morphology in males: A cone‐beam computed tomography and cephalometric analysis

Zhang

Gong

Liu

et al. 2023

Orthod Craniofacial Res

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Objective:The objective of the study was to assess the differences in dentoskeletal morphology in males with and without temporomandibular joint osteoarthrosis (TMJOA).Methods: Three hundred seventy-one male participants seeking orthodontic treatment were enrolled in this cross-sectional study. Each participant's osseous status was evaluated using cone-beam computed tomography (CBCT) and classified into normal (N = 104), indeterminate for TMJOA (N = 110) and TMJOA (N = 157) groups. The dentoskeletal characteristics were evaluated using cephalograms. Stratified analysis was performed based on age and skeletal pattern. Descriptive statistics and one-way analysis of variance were performed to investigate dentoskeletal differences among groups. P < .05 was considered statistically significant. Results:The differences in posterior cranial base length, FMA, MP-OP, anterior facial height, articular angle, ramus height and L1-MP were statistically significant. After stratification by age, the differences in FMA, maxillomandibular angle, posterior facial height, facial height ratio, gonial angle and mandibular body length were statistically significant in adults. No statistical difference except for articular angle was observed in adolescents. After stratification by skeletal pattern, statistical differences were mainly apparent in skeletal Class II adults. Conclusion:Males with TMJOA showed a posteriorly positioned and backwardrotated mandible, especially in skeletal Class II adults. Compared with women, the craniofacial morphology of men is less affected by TMJOA. The association between TMJOA and craniofacial morphology also varied across different age groups and skeletal patterns. Prospective studies are required to clarify the cause-effect relationship between TMJOA and craniofacial morphology in males.

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“…Parameters such as dentition status, occlusal force, internal structure and morphology of TMJ are known to be correlated with each other. Considering the correlation between these parameters, it is possible that the trabecular structures of the mandibular condyle of the edentulous and fully dentate patients are of different types [8]. In other words, properties such as density, thickness, and seperation of the trabecular structure may change due to the above-mentioned external factors [9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of trabecular bone microstructure of mandibular condyle in edentulous, unilateral edentulous and fully dentate patients using cone-beam computed tomography

2020

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Background:The aim of this study was to compare the trabecular bone microstructure of the mandibular condyle in edentulous, unilateral edentulous (Kennedy Class II), and fully dentate patients. Materials and methods:The study used the cone-beam computed tomography (CBCT) images of 17 fully dentate (34 condyles), 16 edentulous (32 condyles), and 17 unilateral edentulous patients (34 condyles) aged 19 to 80 years. The trabecular bone microstructure of the mandibular condyle was evaluated on eight consecutive crosssectional images of these patients. In the microstructure analysis, structural model index (SMI), ellipsoid factor (EF), bone volume fraction (BV/TV), trabecular thickness (Tb.Th) and trabecular seperation (Tb.Sp) were measured. Results:There was no significant difference between the mean SMI, BV/TV, EF andTb.Th microstructure values of each group (p = 0.243, p = 0.095, p = 0.962, p = 0.095, respectively). However, there was significant difference in terms of mean Tb.Sp between the groups (p =0.021). The trabecular structure in all three groups was more rod-shaped. No correlation was found between age factor and microstructure values. Conclusions:Considering the in vivo microstructure analysis of CBCT images, it can be said that teeth loss does not have a significant effect on the microstructure parameters excluding Tb.sp of mandible condyles and does not affect mandibular condyle trabecular endurance.

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Trabecular bone ratio of the mandibular condyle according to the presence of teeth: a micro-CT study

Abstract: The present study has provided data regarding the bone quantity of the trabeculae of the mandibular condyle according to the presence or absence of teeth.

Cited by 10 publications

References 21 publications

Usefulness of measuring bone density of mandibular condyle in patients at risk of osteoporosis: A cone beam computed tomography study

Usefulness of measuring bone density of mandibular condyle in patients at risk of osteoporosis: A cone beam computed tomography study

Association of temporomandibular joint osteoarthrosis with dentoskeletal morphology in males: A cone‐beam computed tomography and cephalometric analysis

Evaluation of trabecular bone microstructure of mandibular condyle in edentulous, unilateral edentulous and fully dentate patients using cone-beam computed tomography

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