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Assessment of aging characteristics of female condylar trabecular structure by cone-beam computed tomography

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Abstract

Objectives

This study was performed to analyze the aging-related changes of the female condylar bone mineral density (BMD) and trabecular structure by cone-beam computed tomography (CBCT), and determine whether the condylar structure shows obvious changes after menopause.

Methods

The CBCT images of 160 female patients who met the inclusion criteria for the study were collected and divided into four groups by age (20–29 years, 30–39 years, premenopausal, and postmenopausal groups). Computer processing software CT-Analyser (Version 1.15.2.2+; SkyScan, Antwerp, Belgium) was used to measure the condylar BMD and related indexes, namely the bone volume/tissue volume ratio (BV/TV), trabecular number (Tb.N), trabecular thickness (Tb.Th), trabecular separation (Tb.Sp), trabecular structure model index (SMI), and bone surface area/volume ratio (BS/BV). SPSS 12.0 (SPSS Inc., Chicago, IL, USA) was used to analyze the radiographic findings and statistical differences.

Results

No significant differences were found between the bilateral condyles in each group (P > 0.05). BV/TV, Tb.N, and Tb.Th of the condyle decreased with age, and the postmenopausal group showed significantly different values for each index compared with the other groups (P < 0.01). Tb.Sp, SMI, and BS/BV of the condyle increased with age, and the postmenopausal group showed significantly different values for each index compared with the other groups (P < 0.01).

Conclusions

With increasing age, the female condylar bone volume decreases, the Tb.N and Tb.Th decrease, the gap between the trabecular bone increases, and plate-like trabecular bone gradually transforms into a rod-like form. These changes are much more obvious in postmenopausal women.

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Correspondence to Hongbing Jiang.

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Conflict of interest

Guangnan Li, Haoliang Qian, Songsong Guo, Dongmiao Wang, Chao Sun, Yifei Du, Jie Cheng, and Hongbing Jiang declare that they have no conflict of interest.

Human rights statement

All procedures followed were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all patients for being included in the study.

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Li, G., Qian, H., Guo, S. et al. Assessment of aging characteristics of female condylar trabecular structure by cone-beam computed tomography. Oral Radiol 35, 16–22 (2019). https://doi.org/10.1007/s11282-018-0322-3

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  • DOI: https://doi.org/10.1007/s11282-018-0322-3

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