Oral contraceptive pill use and abnormal menstrual cycles in women with severe condylar resorption: A case for low serum 17β-estradiol as a major factor in progressive condylar resorption

Gunson, Michael J.; Arnett, G. William; Formby, Bent; Falzone, Charles; Mathur, Ruchi; Alexander, Carolyn

doi:10.1016/j.ajodo.2009.07.011

Cited by 99 publications

(60 citation statements)

References 48 publications

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“…17,18 Hormonal imbalances and the use of oral contraceptives also have been considered potential etiologic factors for condylar resorption. 19,20 A history of untreated TMJ arthritic changes (disc displacements or osteoarthritis) has been associated with poor outcomes of surgical MMA, in which further condylar arthritic changes may lead to instability after surgery. 14,21-23 Among alternative treatment options, simultaneous articular disc repositioning has been advocated to avoid condylar resorption and improve stability.…”

mentioning

confidence: 99%

Temporomandibular Joint Condylar Changes Following Maxillomandibular Advancement and Articular Disc Repositioning

Gonçalves

Wolford

Cassano

et al. 2013

Journal of Oral and Maxillofacial Surgery

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Purpose To evaluate condylar changes 1 year after bimaxillary surgical advancement with or without articular disc repositioning using longitudinal quantitative measurements in 3-dimensional (3D) temporomandibular joint (TMJ) models. Methods Twenty-seven patients treated with maxillomandibular advancement (MMA) underwent cone-beam computed tomography before surgery immediately after surgery and at 1-year follow-up. All patients underwent magnetic resonance imaging before surgery to assess disc displacements. Ten patients without disc displacement received MMA only. Seventeen patients with articular disc displacement received MMA with simultaneous TMJ disc repositioning (MMA-Drep). Pre- and postsurgical 3D models were superimposed using a voxel-based registration on the cranial base. Results The location, direction, and magnitude of condylar changes were displayed and quantified by graphic semitransparent overlays and 3D color-coded surface distance maps. Rotational condylar displacements were similar in the 2 groups. Immediately after surgery, condylar translational displacements of at least 1.5 mm occurred in a posterior, superior, or mediolateral direction in patients treated with MMA, whereas patients treated with MMA-Drep presented more marked anterior, inferior, and mediolateral condylar displacements. One year after surgery, more than half the patients in the 2 groups presented condylar resorptive changes of at least 1.5 mm. Patients treated with MMA-Drep presented condylar bone apposition of at least 1.5 mm at the superior surface in 26.4%, the anterior surface in 23.4%, the posterior surface in 29.4%, the medial surface in 5.9%, or the lateral surface in 38.2%, whereas bone apposition was not observed in patients treated with MMA. Conclusions One year after surgery, condylar resorptive changes greater than 1.5 mm were observed in the 2 groups. Articular disc repositioning facilitated bone apposition in localized condylar regions in patients treated with MMA-Drep.

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confidence: 99%

Temporomandibular Joint Condylar Changes Following Maxillomandibular Advancement and Articular Disc Repositioning

Gonçalves

Wolford

Cassano

et al. 2013

Journal of Oral and Maxillofacial Surgery

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“…The jaw exhibits decreased vertical ramus height[2] and posterior facial height,[81011] and the mandibular plane angle is correspondingly high/steep,[26] with a dental and skeletal Class II,[26812] and anterior open bite. [26812] The overjet is increased[9] and the lower incisors are angulated.…”

Section: Clinical Presentationmentioning

confidence: 99%

“…[26812] The overjet is increased[9] and the lower incisors are angulated. [2] The backward rotation of the mandible may result in decreased oropharyngeal airway space.…”

Section: Clinical Presentationmentioning

confidence: 99%

“…Although the exact cause is unknown, a number of possibilities have been proposed, such as hormonal changes,[56] and increased mechanical loading from parafunctional habits, trauma, internal joint derangement, orthodontics, orthognathic surgery, and occlusal therapy. [7] Preexisting clinically detectable TMJ sounds have also been implicated but have recently been found not to be a risk factor.…”

Section: Introductionmentioning

confidence: 99%

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Idiopathic condylar resorption: The current understanding in diagnosis and treatment

Young¹

2017

J Indian Prosthodont Soc

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Idiopathic condylar resorption (ICR) is a condition with no known cause, which manifests as progressive malocclusion, esthetic changes, and often pain. Cone-beam computed tomography and magnetic resonance imaging are the most valuable imaging methods for diagnosis and tracking, compared to the less complete and more distorted images provided by panoramic radiographs, and the higher radiation of 99mtechnetium-methylene diphosphonate. ICR has findings that overlap with osteoarthritis, inflammatory arthritis, physiologic resorption/remodeling, congenital disorders affecting the mandible, requiring thorough image analysis, physical examination, and history-taking. Correct diagnosis and determination of whether the ICR is active or inactive are essential when orthodontic or prosthodontic treatment is anticipated as active ICR can undo those treatments. Several treatments for ICR have been reported with the goals of either halting the progression of ICR or correcting the deformities that it caused. These treatments have varying degrees of success and adverse effects, but the rarity of the condition prevents any evidence-based recommendations.

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“…Systemic diseases such as autoimmune and connective tissue diseases are other contributors to this pathologic condition. Many researchers also state orthognathic surgery among the causative factors [2,3,[6][7][8][9][10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Assessment of clinical and radiographic changes of the mandibular condyle following orthognathic surgery

Akhlaghi¹,

Khayampour²,

Motamedi³

et al. 2017

Int J Dentistry Res

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Aim: Changes of the mandibular condyle are unwanted and unpredictable complications of orthognathic surgery. This pilot study investigated the prevalence and severity of mandibular condylar changes after orthognathic surgery. Materials and Method: In this prospective study 20 patients with class II and III malocclusion who needed orthognathic surgery were evaluated. Ramus height, condylar width, joint pain, overjet and overbite, angular changes on lateral cephalogram, maximal mouth opening, maxillary and mandibular movements before and 6 months after surgery were assessed. Results: In this study condylar atrophy was radiographically evident on panoramic radiographs of 6 (30%) of the patients; one patient was treated for class II malocclusion and the other 5 were treated for class III malocclusion. Conclusion: This study showed radiographically evident condylar atrophy in 30% after surgery; however none had any related clinical signs or symptoms. None of the cases that developed condylar atrophy postsurgery correlated significantly with the variables assessed in this short term pilot study. Further studies and longer follow-up is needed to validate the results.

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Oral contraceptive pill use and abnormal menstrual cycles in women with severe condylar resorption: A case for low serum 17β-estradiol as a major factor in progressive condylar resorption

Cited by 99 publications

References 48 publications

Temporomandibular Joint Condylar Changes Following Maxillomandibular Advancement and Articular Disc Repositioning

Temporomandibular Joint Condylar Changes Following Maxillomandibular Advancement and Articular Disc Repositioning

Idiopathic condylar resorption: The current understanding in diagnosis and treatment

Assessment of clinical and radiographic changes of the mandibular condyle following orthognathic surgery

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