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. 2014 Feb 13:2014:761714.
doi: 10.1155/2014/761714. eCollection 2014.

Articular eminence inclination, height, and condyle morphology on cone beam computed tomography

Dilhan İlgüy  1 , Mehmet İlgüy  1 , Erdoğan Fişekçioğlu  1 , Semanur Dölekoğlu  1 , Nilüfer Ersan  1
Affiliations

Articular eminence inclination, height, and condyle morphology on cone beam computed tomography

Dilhan İlgüy et al. ScientificWorldJournal. .

Abstract

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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Figures

Figure 1
Figure 1
(a) The points and planes used in this study, (b) the best-fit line method, and (c) the top-roof line method. F: Frankfort horizontal, F1: the parallel line to the F passing through the highest point of the condylar process, F2: the parallel line to the F passing through the highest point of the fossa, Ebf plane: the best-fit plane of the articular eminence inclination connecting the point, at which the F1 line cut the eminence posterior surface, Etr plane: the plane passing through the highest point of the condylar process and the highest point of the condylar process, and Eh: Eminence height.
Figure 2
Figure 2
The coronal condyle morphology: (a) convex, (b) round, (c) flat, and (d) angled and other.
Figure 3
Figure 3
The sagittal condyle morphology: (a) without osteoarthritis (OA), (b) flattening, (c) erosion, and (d) osteophyte.
See this image and copyright information in PMC

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