Condylar resorptions and orthodontic-surgical treatment: State of the art

Ferri, Joël; Nicot, Romain; Maes, Jean-Michel; Raoul, G.; Lauwers, Ludovic

doi:10.1016/j.ortho.2016.10.011

Cited by 9 publications

(8 citation statements)

References 59 publications

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“…Other studies have focused on remodeling and displacement of the mandibular condyles, and established this changes as a physiological adaptation process of the TMJ, allowing major consequences related to occlusion to be avoided. Sometimes the adaptive capacity of the joint is exceeded, leading to the onset of a resorption process of the condyle, characterized by bone remodeling with a negative balance in the volume of the condyle [17]. These studies have shown no correlation between changes in condylar volume and joint spaces.…”

Section: Discussionmentioning

confidence: 98%

Correlation between mandibular condylar position and clinical dysfunction index after bilateral sagittal split osteotomies

J¹,

González-Magaña²,

O³

2019

J Oral Health Craniofac Sci

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Several articles have discussed mandibular condyle position after bilateral sagittal split osteotomies (BSSO). However, previous studies have sought to establish a relationship between orthognathic surgery and the improvement of temporomandibular joint (TMJ) signs and symptoms. Also, they have been limited to two-dimensional evaluation of condylar position considering only the condylar "sag" or improper inferior seating of the condyle. The purpose of this study was to investigate a relationship between changes in condylar position using three-dimensional computed tomography and the negative clinical impact of BSSO on the temporomandibular joint.How to cite this article: Kalach Mussali AJ, Gonzalez-Magana F, Malagon Hidalgo HO. Correlation between mandibular condylar position and clinical dysfunction index after bilateral sagittal split osteotomies. J

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Section: Discussionmentioning

confidence: 98%

Correlation between mandibular condylar position and clinical dysfunction index after bilateral sagittal split osteotomies

J¹,

González-Magaña²,

O³

2019

J Oral Health Craniofac Sci

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“…20,39,41 the position of soft and hard tissues in the TMJ are always accompanied by a mechanical impact. 42 Once the adaptive capacity is exceeded, a negative influence on balance and the mechanical environment of the TMJ occurs, 43 possibly resulting in the occurrence of TMD. 44 Thus, the biomechanical analysis of the TMJ was critical to understanding its functions.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical behaviour of temporomandibular joints during opening and closing of the mouth: A 3D finite element analysis

Shu

Liu³

et al. 2020

Numer Methods Biomed Eng

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Temporomandibular joints (TMJs) constitute a pair of joints that connect the jawbone to the skull. TMJs are bilateral joints which work as one unit in conducting daily functions such as speaking, mastication, and other activities associated with the movement of the jaw. Issues associated with the TMJs may arise due to various factors—one such factor being the internal load on the TMJ. These issues may contribute to temporomandibular disorders (TMD). This study aims to evaluate the mandibular trajectories and the associated stress changes during the process of opening the mouth on the TMJs of an asymptomatic subject. The mouth opening motion was recorded by a motion capturing system using models of the mandible and maxilla constructed based on the computed tomography (CT). Two discs constructed based on magnetic resonance imaging (MRI). Finite element analysis was performed on the relative motion of the mandible to the maxilla and validated. The process modelled by these displacements provided less than 10% error in terms of deformation. The simulation results indicate that the lateral intermediate zone—the head and neck of the mandible—and the articular eminence sustained the most significant stresses during the mouth opening motion. The results also suggested that the stresses increase as the range of opening increases with the greatest von Mises stress, tensile, and compressive stress found at the position of maximal opening.

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“…Considering the most recent international consensus, it would have been interesting to separately evaluate the impact of sleep and awake bruxism on postoperative TMD. Finally, the TMD/TMJ evolve and heal over a long period of time after orthognathic surgery, and thus, it would have been interesting to evaluate the impact of bruxism and dysfunctions on TMD in the long term or on condylar resorption …”

Section: Discussionmentioning

confidence: 99%

Pre‐operative parafunctional or dysfunctional oral habits are associated with the temporomandibular disorders after orthognathic surgery: An observational cohort study

Bruguiere

Sciote

Roland-Billecart

et al. 2018

J of Oral Rehabilitation

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Background: Temporomandibular disorders (TMDs) are frequent and disabling, and hence, preventing them is an important health issue. Combining orthodontic and surgical treatments for malocclusions has been shown to affect temporomandibular joint (TMJ) health. However, publications regarding the risk factors that predict negative TMJ outcomes after orthognathic surgery are scarce.Objective: Present prospective cohort study was conducted to identify an association between pre-operative dysfunctional/parafunctional oral habits and the presence of TMD symptoms after orthognathic surgery. Method:We included 237 patients undergoing orthodontics and surgical treatment for malocclusions associated with dentofacial deformities within the Department of Oral and Maxillofacial Surgery of the University of Lille. Their parafunctional and dysfunctional oral habits were recorded through clinical examination along with the presence of TMD symptoms before and after the surgery. According to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) classification, the TMD symptoms studied were myalgia, arthralgia, disc displacement with or without reduction. Results: Multivariate analysis revealed significant associations among bruxism (odds ratio [OR] 3.17 [1.066; 9.432]), lingual interposition (OR 4.241 [1.351; 13.313]), as well as primary swallowing (OR 3.54 [1.225; 10.234]) and the presence of postoperative symptoms of myalgia. Moreover, a significant association was observed between the presence of any dysfunctional oral habit and postoperative disc displacement with reduction (OR 4.611 [1.249; 17.021]). Conclusion: Bruxism and dysfunctional oral habits were shown to be risk factors for the presence of TMD symptoms also after combined orthodontic and surgical treatment. Treating such habits before orthognathic surgery should help prevent TMD. K E Y W O R D S malocclusion, oral health, orthognathic surgery, sleep bruxism, temporomandibular joint disorders

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Condylar resorptions and orthodontic-surgical treatment: State of the art

Cited by 9 publications

References 59 publications

Correlation between mandibular condylar position and clinical dysfunction index after bilateral sagittal split osteotomies

Correlation between mandibular condylar position and clinical dysfunction index after bilateral sagittal split osteotomies

Biomechanical behaviour of temporomandibular joints during opening and closing of the mouth: A 3D finite element analysis

Pre‐operative parafunctional or dysfunctional oral habits are associated with the temporomandibular disorders after orthognathic surgery: An observational cohort study

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