Disk and joint morphology variations on coronal and sagittal MRI in temporomandibular joint disorders

Almășan, Oana; Hedeșiu, Mihaela; Băciuț, Grigore; Leucuţa, Daniel; Băciuţ, Mihaela

doi:10.1007/s00784-012-0803-4

Cited by 36 publications

(34 citation statements)

References 26 publications

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“…Regarding the coronal condylar angle, when comparing the means in the different positions of the disc, no statistical association was evident, like Almǎşan et al 50 However, it can be observed that in the coronal displacements, the coronal angle is smaller (rotated medially) than in the TMJ discs in normal position, as shown by Raustia et al 45 who found differences in this inclination between patients with temporomandibular dysfunction and the control group.…”

Section: Discussionmentioning

confidence: 87%

Association between temporomandibular joint disc position evaluated by magnetic resonance imaging and mandibular condyle inclination evaluated by computed tomography

Stefano

Guercio-Mónaco

Hernández-Andara³

et al. 2020

J of Oral Rehabilitation

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The temporomandibular joint (TMJ) is part of the craniofacial complex and is made up of a large number of structures and elements, making its operation complex, so that small alterations can cause a wide variety of functional problems. 1. These problems are known as temporomandibular disorders (TMD), a generic term covering a group of musculoskeletal and neuromuscular conditions that affect the TMJ, the masticatory muscles and all associated tissues. 2,3 AbstractTemporomandibular joint disc displacement is common in the world's population and could be associated with bone and functional characteristics of the temporomandibular joint. The aim of these study was to analyse the association between temporomandibular joint disc position evaluated by magnetic resonance imaging (MRI) and the inclination of the mandibular condyle evaluated by computed tomography (CT).One hundred and seventy temporomandibular joints (TMJ) were retrospectively analysed. The temporomandibular disc position was evaluated by MRI and classified into three types: normal (N), disc displacement with reduction (DDWR) and disc displacement without reduction (DDWoR). The mandibular condyle measurements evaluated by CT included horizontal, sagittal and coronal inclination. ANOVA followed by post hoc Tukey's test was used to evaluate the interaction between condylar inclination and disc position. There was an association between disc position and the horizontal and sagittal condylar inclination (P < .05). There are statistically significant differences in the mean of horizontal and sagittal inclination of the mandibular condyle between the DDWoR and the other disc positions (P = .002 and P = .004). Disc position was not statistical associated with coronal inclination of condyle (P > .05). These results indicate that the inclination of the mandibular condyle may be different in TMJ with various disc position. A more medial horizontal inclination and a more posterior sagittal inclination of the mandibular condyle are associated with DDWoR. K E Y W O R D Scomputed tomography, magnetic resonance imaging, mandibular condyle, temporomandibular joint, temporomandibular joint disc |The TMD are a major health problem, affecting more than 50% of the world's population at some point in their lives and usually occurs in children, youth and adults of all ages and gender. 4,5 TMD can be classified into two major categories: temporomandibular joint disorders and masticatory muscle disorders. 2,3 Among the disorders of the TMJ are the alterations of the intra-articular mobility and the disorders of the disc-condyle complex. 2,6 Disorders of the disc-condyle complex consist of an abnormal position of the articular disc with respect to the mandibular condyle and the articular eminence. [7][8][9] Abnormal disc position or disc displacement has often been diagnosed in patients of diverse populations and can occur even in the growing population and is considered to be a condition that may worsen over time. 10,11 It has been observed that disc displacement of the TMJ is ab...

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Section: Discussionmentioning

confidence: 87%

Association between temporomandibular joint disc position evaluated by magnetic resonance imaging and mandibular condyle inclination evaluated by computed tomography

Stefano

Guercio-Mónaco

Hernández-Andara³

et al. 2020

J of Oral Rehabilitation

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“…Temporomandibular joint dysfunction can be associated with malocclusion, false condyle position and condylar disk displacement [26,27]. To avert postoperative temporomandibular joint dysfunction, alterations in the condyle position or malocclusion should be avoided; this improves patients’ postoperative satisfaction and quality of life.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of computer-assisted mandibular reconstruction with vascularized iliac crest bone graft compared to conventional surgery: a randomized prospective clinical trial

Ayoub

Ghassemi

Rana

et al. 2014

Trials

112

101

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BackgroundComputer-assisted surgery plays an increasingly important role in mandibular reconstruction, ensuring the best possible masticatory function and aesthetic outcome.MethodsTwenty patients were randomly assigned to computer-assisted or conventional mandibular reconstruction with vascularized iliac crest bone graft in a prospective study design.Virtual surgical planning was based on preoperative CT-data using specific surgical planning software. A rapid prototyping guide transferred the virtual surgery plan to the operation site. During surgery the transplant ischemic time, reconstruction time, time for shaping the transplant and amount of bone removed were measured. Additionally, the difference in the intercondylar distance before and after surgery was calculated.ResultsComputer-assisted surgery shortened the time of transplant ischemia (P < 0.005) and defect reconstruction (P < 0.001) compared to conventional surgery. The time to saw and shape the transplant at the donor site was shorter using conventional surgery (P < 0.005); therefore, the overall time for surgery didn’t change (P = 0.527). In the computer-assisted group, the amount of bone harvested equaled the defect size, whereas the transplant size in the conventional group exceeded the defect site by 16.8 ± 5.6 mm (P < 0.001) on average. The intercondylar distance before compared to after surgery was less affected in the computer-assisted than in the conventional group (P < 0.001).ConclusionsThe presented study shows that computer-assisted surgery can help reduce the time for mandibular defect reconstruction and consequently the transplant ischemic time. In the computer-assisted group, the iliac crest donor site defect was downsized and the postoperative condyle position was less altered, reducing possible risks of postoperative complications and donor site morbidity.Trial RegistrationDRKS00005181.

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“…The results showed an association between disc displacement and changes in the morphology of the articular disc, in agreement with the literature. 7,15,24,[36][37][38] Most of the normally positioned discs showed a biconcave shape, while none of them had a folded shape. Additionally, all of the folded discs were found in patients in advanced stages of internal derangement (ADWOR).…”

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confidence: 99%

Correlation between temporomandibular joint morphology and disc displacement by MRI

Farias¹,

Melo²,

Bento³

et al. 2015

Dentomaxillofacial Radiology

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Objectives:The aim was to evaluate the morphology of the temporomandibular joint's (TMJs) disc and condyle as well as its correlation with disc displacement, using MRI. Methods: 190 TMJs were retrospectively analysed. The condyle morphology of each TMJ was evaluated by two observers using both axial and coronal views, as were their disc morphology and displacement, using sagittal view. Condyle morphology was classified as flat, convex, angled or rounded in the coronal sections and as anterior side flat/posterior side convex, biconvex, anterior side concave/posterior side convex, flat or biconcave in the axial view. Disc morphology was determined as biconcave, biplanar, biconvex, hemiconvex or folded. x 2 , Fisher exact and Bonferroni correction tests were used to evaluate the data. ANOVA followed by post hoc Tukey's test was used to evaluate the interaction between age and disc displacement. Results: Anterior disc displacement with reduction; convex condyle morphology in the coronal view; anterior side concave/posterior side convex morphology in the axial view; and biconcave discs were found to be the most prevalent findings. An association was observed between disc morphology and disc displacement (p , 0.001). No correlation between condyle morphology and TMJ disc displacement was found (p 5 0.291 for axial and p 5 0.14 for coronal views). Conclusions:The results of this study suggest that TMJ disc morphology is associated with disc displacement.

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Disk and joint morphology variations on coronal and sagittal MRI in temporomandibular joint disorders

Abstract: Our study highlights the existence of changes on coronal MRI in TMD patients which should be assessed for better understanding of the clinical evolution of temporomandibular disorders.

Cited by 36 publications

References 26 publications

Association between temporomandibular joint disc position evaluated by magnetic resonance imaging and mandibular condyle inclination evaluated by computed tomography

Association between temporomandibular joint disc position evaluated by magnetic resonance imaging and mandibular condyle inclination evaluated by computed tomography

Evaluation of computer-assisted mandibular reconstruction with vascularized iliac crest bone graft compared to conventional surgery: a randomized prospective clinical trial

Correlation between temporomandibular joint morphology and disc displacement by MRI

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