1,831 results match your criteria Dislocation Mandible


Effects of Different Therapeutic Modalities on the Clicking Sound and Quantitative Assessment of the Vertical and Lateral Mandibular Movements of Patients with Internal Derangements of the Temporomandibular Joint.

Int J Prosthodont 2021 Mar-Apr;34(2):173-182

Purpose: To compare the efficacy of low-dose laser therapy to that of conservative treatment using two different occlusal splints (stabilization and anterior repositioning splints) in patients with internal derangements of the temporomandibular joint (TMJ).

Materials And Methods: The study population consisted of patients with disc displacement with reduction diagnosed according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axis I and Axis II. In addition, disc displacement with reduction was confirmed in all patients using TMJ ultrasonography. Read More

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[Three-dimensional morphological changes in the temporomandibular joints of patients with anterior disc displacement with reduction].

Hua Xi Kou Qiang Yi Xue Za Zhi 2021 Apr;39(2):203-208

Key Laboratory for Biomechanical Engineering of Sichuan Province, Sichuan University, Chengdu 610065, China.

Objectives: To investigate the differences in the temporomandibular joints (TMJs) between patients with anterior disc displacement with reduction (ADDwR) and asymptomatic subjects by using 3D morphometric measurements.

Methods: A total of 15 patients with ADDwR and 10 asymptomatic subjects were enrolled. Then, 3D models of the maxilla and mandible were reconstructed using MIMICS 20. Read More

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The Cat Mandible (II): Manipulation of the Jaw, with a New Prosthesis Proposal, to Avoid Iatrogenic Complications.

Animals (Basel) 2021 Mar 4;11(3). Epub 2021 Mar 4.

Unit of Veterinary Anatomy and Embryology, Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary Sciences, Campus of Lugo-University of Santiago de Compostela, 27002 Lugo, Spain.

The cat mandible is relatively small, and its manipulation implies the use of fixing methods and different repair techniques according to its small size to keep its biomechanical functionality intact. Attempts to fix dislocations of the temporomandibular joint should be primarily performed by non-invasive techniques (repositioning the bones and immobilisation), although when this is not possible, a surgical method should be used. Regarding mandibular fractures, these are usually concurrent with other traumatic injuries that, if serious, should be treated first. Read More

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Dislocation of the mandibular condyle into the middle cranial fossa. A case of temporomandibular joint arthroplasty with resorbable fixation system and temporalis myofascial flap: systematic review and meta-analysis.

Br J Oral Maxillofac Surg 2021 05 19;59(4):389-397. Epub 2020 Aug 19.

General Hospital of Mexico "Eduardo Liceaga".

The aims of the present study were to comprehensively assess all the published cases on dislocation of the mandibular condyle into the middle cranial fossa (DMCCF) in the literature in English and describe the clinical, imaging, and therapeutic variables for this condition. An electronic search was undertaken in March 2020 using PubMed/MEDLINE, Web of Science, ScienceDirect, Springer, and Scopus databases. Eligibility criteria included publications with sufficient information to confirm the diagnosis. Read More

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An orthodontic perspective on Larsen syndrome.

BMC Oral Health 2021 03 10;21(1):111. Epub 2021 Mar 10.

Section of Orthodontics, Department of Oral Growth and Development, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka, 8140193, Japan.

Background: Larsen syndrome (LS) is a rare disorder of osteochondrodysplasia. In addition to large-joint dislocations, craniofacial anomalies are typical characteristics. In this report, we performed orthodontic analyses, including skeletal and occlusal evaluations, to examine whether the craniofacial skeletal morphology leads to the craniofacial anomalies in LS. Read More

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The effect of TMJ disk repositioning by suturing through open incision on adolescent mandibular asymmetry with and without a functional orthodontic appliance.

Oral Surg Oral Med Oral Pathol Oral Radiol 2021 Apr 8;131(4):405-414. Epub 2020 Dec 8.

Resident, Department of Oral and Cranio-maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Huang Pu District, Shanghai, China.

Objective: The objective of this study was to evaluate the effect of combined temporomandibular joint (TMJ) disk repositioning by suturing through open incision and orthodontic functional appliance (OFA) treatment for adolescents with mandibular asymmetry.

Study Design: Adolescent patients (12-20 years old) with mandibular asymmetry combined with unilateral TMJ disk displacement without reduction were treated with disk repositioning by suturing through open incision with and without postoperative OFA. Magnetic resonance imaging and posteroanterior cephalometric radiographs (PA) were used to measure and compare the changes in condylar height, joint space, and menton deviation pre- and postoperatively. Read More

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[Impact of temporomandibular joint arthroscopic discopexy on condylar growth in adolescents: a retrospective cohort study].

Authors:
M Yuan P Shen C Yang

Zhonghua Kou Qiang Yi Xue Za Zhi 2021 Feb;56(2):158-163

Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai 200011, China.

To compare changes of condylar height, disc length and displaced distance in adolescent temporomandibular joint (TMJ) disc displacement with or without arthroscopic discopexy. From September 2015 to November 2018, adolescents with magnetic resonance image (MRI) comfirmed disc displacement without reduction (DDwoR) were recruited in operation group (OG) and control group (CG) and were classified into five subgroups according to age (11-14 years, 15-16 years, 17-18 years, 19-20 years and 21-24 years). Changes of condylar height, disc length and displaced distance were measured before and after follow-up MRI. Read More

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February 2021

Three-dimensional comparative evaluation of articular disc position and other temporomandibular joint morphology in Class II horizontal and vertical cases with Class I malocclusion.

Angle Orthod 2020 09;90(5):707-714

Objective: To evaluate and compare articular disk position, condylar position, and joint spaces in Class II vertical, Class II horizontal, and Class I cases. The purpose was to assess the potential for development of temporomandibular disorders (TMDs) in the three groups.

Materials And Methods: A sample of 75 cases, 25 cases in each group of Class I, Class II vertical, and Class II horizontal, were selected based on inclusion and exclusion criteria. Read More

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September 2020

Magnetic resonance imaging evaluation of articular disk position after orthognathic surgery with or without concomitant disk repositioning: a retrospective study.

Oral Surg Oral Med Oral Pathol Oral Radiol 2021 Mar 9;131(3):276-285. Epub 2020 Sep 9.

Adjunct Professor, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.

Objective: The aim of this study was to compare the outcomes of 2 surgical treatment options: one for correction of class II malocclusion skeletal deformity and one for pre-existing temporomandibular joint (TMJ) disorders requiring orthognathic surgery (OS) for correction of dentofacial deformity.

Study Design: This retrospective study evaluated patients who underwent OS with maxillomandibular advancement (MMA) with or without concomitant TMJ surgery for articular disk repositioning (ADR). Patients were divided into 2 groups: group I (MMA) was treated with OS only (18 patients); and group II (MMA-ADR) was treated with OS and concomitant ADR (19 patients). Read More

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Extracapsular Condylar Fractures Treated Conservatively in Children: Mechanism of Bone Remodelling.

J Craniofac Surg 2020 Nov 17. Epub 2020 Nov 17.

The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University.

Objective: This study aims to reveal the reconstruction process in pediatric patients with extracapsular condylar fractures after conservative treatment. We clarify that the "upright" position (or "recontouring" or favorable prognosis) of condyles is not a result of the anatomical reduction of the deviated condylar processes but originates from the remodeling of the skeleton. We also explore the related mechanism. Read More

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November 2020

Intermittent intracranial condylar dislocation with minimal functional sequelae.

Int J Oral Maxillofac Surg 2021 May 17;50(5):670-673. Epub 2020 Oct 17.

Orofacial Pain Unit, Centre of Dental Medicine, University of Zurich, Zurich, Switzerland; Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Berne, Berne, Switzerland; São Leopoldo Mandic Institute and Research Centre, Campinas, São Paulo, Brazil.

Degenerative changes of the temporomandibular joint (TMJ) present with a broad spectrum of morphological alterations. However, erosions leading to a glenoid fossa defect and condylar impingement of the temporal lobe are a rare finding. A 77-year-old female patient presented with limited mouth opening and pre-auricular pain during mastication on the left side. Read More

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Traumatic Posterior Dislocation of Bilateral Mandible Condyles into External Auditory Canal Treated with Midline Mandibulotomy: A Rare Case Report and Review of Literature.

J Maxillofac Oral Surg 2020 Dec 8;19(4):642-646. Epub 2020 Sep 8.

Unit of Oral and Maxillofacial Surgery, OHSC PGIMER, Chandigarh, India.

Background: Posterior dislocation of the condyle from the glenoid fossa fracturing the anterior wall of the canal and ultimately restricting lower jaw movements is a rare condition. It may occur due to lax intra-articular ligaments or periarticular tissue or as a result of injury to the chin region. Very few cases of this condition are reported in the literature. Read More

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December 2020

The influence of articular eminence morphology on temporomandibular joint anterior dislocations.

Oral Surg Oral Med Oral Pathol Oral Radiol 2021 Jan 7;131(1):9-15. Epub 2020 Aug 7.

Professor and Head, Department of Oral and Maxillofacial Surgery, Hebrew University-Hadassah.

Objective: The aim of this study was to investigate the correlation between the bony morphology of the articular eminence and the occurrence of idiopathic anterior temporomandibular joint (TMJ) dislocation.

Study Design: A comparative retrospective study was conducted in 14 patients with idiopathic anterior dislocations (study group) and 14 patients who did not suffer from any TMJ disorders (control group). All patients underwent multidetector computed tomography (MDCT), which demonstrated the full extent of their joints. Read More

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January 2021

Dislocated pediatric condyle fractures - should conservative treatment always be the rule?

Authors:
Aleš Vesnaver

J Craniomaxillofac Surg 2020 Oct 14;48(10):933-941. Epub 2020 Aug 14.

Department of Maxillofacial and Oral Surgery (Head: Assoc. Prof. Andrej A. Kansky, DMD, PhD), University Medical Centre Ljubljana, Zaloška 2, SI-1000, Ljubljana, Slovenia. Electronic address:

Aim: The results of conservative treatment of pediatric dislocated (luxative) condyle fractures are usually unsatisfactory. We therefore decided to present and analyze the results of surgical treatment of these fractures.

Patients And Methods: Children with dislocated condyle fractures were treated surgically, with the approach always including opening the temporomandibular joint (TMJ). Read More

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October 2020

A Case of Long-standing Temporomandibular Joint Dislocation: Restoration of Oral Function Following Condylectomy.

Tokai J Exp Clin Med 2020 Sep 20;45(3):152-155. Epub 2020 Sep 20.

Department of Oral and Maxillofacial Surgery, Tokai University Hachioji Hospital, 1838 Ishikawa-machi, Hachioji, Tokyo 192-0032, Japan.

Background: Temporomandibular joint (TMJ) dislocation can be categorized into three groups: acute, habitual or recurrent, and long-standing. Long-standing TMJ dislocation refers to a condition that persists for more than one month without reduction. Long-standing dislocation of the TMJ is rare and the most challenging and difficult to treat of the three. Read More

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September 2020

Primary Oro-Facial Manifestations of Langerhans Cell Histiocytosis in Pediatric Age: A Bi-Institutional Retrospective Study on 45 Cases.

Children (Basel) 2020 Aug 19;7(9). Epub 2020 Aug 19.

Department of Interdisciplinary Medicine, Complex Operating Unit of Odontostomatology, University of Bari "Aldo Moro", Piazza G. Cesare, 11, 70124 Bari, Italy.

Aims: Langerhans Cell Histiocytosis is a rare hematologic disorder usually affecting children and most commonly involving the head and neck region. Primary oro-facial manifestations are rare, and their diagnosis is often challenging as they are numerous and often resemble common pathologies, refractory to conventional medical and/or instrumental treatments. For such reasons, the diagnosis is frequently delayed, as is the following staging and therapy onset. Read More

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[Root dislocation into the mouth floor as a complication of lower impacted third molar extraction].

Stomatologiia (Mosk) 2020 ;99(4):71-75

Khimki Central Clinical Hospital, Khimki, Russia.

Root dislocation into soft tissues during lower jaw third molar extraction belongs to clinically rare complications. The thickness of the cortical plate on the third molar lingual side does not exceed 1.5 mm. Read More

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High resolution MRI for quantitative assessment of inferior alveolar nerve impairment in course of mandible fractures: an imaging feasibility study.

Sci Rep 2020 07 14;10(1):11566. Epub 2020 Jul 14.

Department of Diagnostic and Interventional Neuroradiology, Medical School Munich, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81765, Munich, Germany.

The purpose of this study was to evaluate a magnetic resonance imaging (MRI) protocol for direct visualization of the inferior alveolar nerve in the setting of mandibular fractures. Fifteen patients suffering from unilateral mandible fractures involving the inferior alveolar nerve (15 affected IAN and 15 unaffected IAN from contralateral side) were examined on a 3 T scanner (Elition, Philips Healthcare, Best, the Netherlands) and compared with 15 healthy volunteers (30 IAN in total). The sequence protocol consisted of a 3D STIR, 3D DESS and 3D T1 FFE sequence. Read More

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Relations between anterior disc displacement and maxillomandibular morphology in skeletal anterior open bite with changes to the mandibular condyle.

Br J Oral Maxillofac Surg 2020 11 9;58(9):1084-1090. Epub 2020 Jul 9.

Oral and Maxillofacial Surgery, Department of Oral Patho-biological Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 kita-ku, Sapporo, Hokkaido 060-8586, Japan.

In this study we investigated the relation between anterior disc displacement (ADD) and maxillomandibular morphology in skeletal anterior open bite with changes to the mandibular condyle. Thirty female patients (60 joints) with both conditions were evaluated. Magnetic resonance imaging of the temporomandibular joint (TMJ) was used to diagnose both ADD and changes to the mandibular condyle (erosion, osteophyte, and deformity). Read More

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November 2020

The effect of arthroscopic disc repositioning on facial growth in juvenile patients with unilateral anterior disc displacement.

J Craniomaxillofac Surg 2020 Aug 17;48(8):765-771. Epub 2020 Jun 17.

Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Key Laboratory of Stomatology, Shanghai, 200011, China.

Objective: To investigate the effect of arthroscopic disc repositioning on condylar development and mandibular asymmetry in juvenile patients with unilateral temporomandibular joint (TMJ) anterior disc displacement (ADD).

Patients And Methods: A retrospective cohort study was conducted on unilateral juvenile anterior disc displacement (UJADD) patients of 10-20 years of age treated in Shanghai Ninth People's Hospital from 2010 to 2017. The primary predictor was TMJ arthroscopic disc repositioning surgery, according to which patients were divided into a surgery group and a control group. Read More

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The role of the styloid apophysis of the temporal bone in the biomechanics of the tongue, mandible, hyoid system: a case study.

Authors:
Giuseppe Messina

Eur J Transl Myol 2020 Apr 1;30(1):8808. Epub 2020 Apr 1.

Department of Psychological, Pedagogical and Educational Sciences, Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy.

Temporomandibular disorders are characterized by ear pain, tinnitus, difficulty in chewing, dysphagia and dizziness, cervical limitation of range of movement (ROM) and other less common disorders. Numerous recent studies associate the presence of these signs and symptoms with an elongated styloid apophysis, as in the case of Eagle syndrome. The purpose of this clinical case is to support the thesis of a common syndrome that temporomandibular joint (TMJ) disorders with an elongated styloid process affirming the relationship between temporal bone, mandible, hyoid bone and tongue. Read More

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Does TMJ Function and Imaging Tools Help Differentiate Between Condylar Resorption and Mandibular Hypoplasia?

J Oral Maxillofac Surg 2020 Aug 11;78(8):1397-1402. Epub 2020 Apr 11.

Professor and Chair, Division of Oral and Maxillofacial Surgery, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Saitama, Japan.

Purpose: Differentiating between bilateral condylar resorption (CR) and mandibular hypoplasia (MH) can be challenging owing to the difficulty in chronological observation and establishing standardized measurements. The purpose of the present study was to assess whether temporomandibular joint (TMJ) function can distinguish between CR and MH and clarify the essential diagnostic imaging tools for CR.

Materials And Methods: We performed a cross-sectional study of patients with mandibular retrognathia. Read More

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Finite elements analysis of the temporomandibular joint disc in patients with intra-articular disorders.

BMC Oral Health 2020 03 30;20(1):93. Epub 2020 Mar 30.

Department of Oral Surgery, The Dingling Clinical Institute of Wenzhou Medical University (Wenzhou Central Hospital), Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.

Background: Intra-articular disorders (ID) or anterior and/or medial displacement of the temporomandibular joint disorder (TMJ) disc are the most common form of TMJ dysfunction (TMD). TMD causes changes in the friction coefficient during TMJ movement. Herein, we provided a three-dimensional (3D) finite-elements model (FEM) including the maxilla, disc, and mandible and evaluated the stress distribution with different friction coefficient. Read More

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

J Oral Rehabil 2020 Jun 24;47(6):743-749. Epub 2020 Apr 24.

Department of Orthodontics, Faculty of Dentistry, University of Rome Sapienza, Rome, Italy.

Temporomandibular 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. Read More

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Total Joint Replacement After Condylar Destruction Secondary to Long-Standing Dislocation of the Temporomandibular Joint.

J Craniofac Surg 2020 Jun;31(4):989-995

Mount Sinaï Hospital, Toronto, Canada.

Background: To describe the treatment of 2 long-standing chronic dislocation of the temporomandibular joints (TMJs) and 1 chronic recurrent dislocation.

Methods: This report describes the treatment of 3 patients; 2 with a long-standing chronic dislocation of the TMJ and 1 with a chronic recurrent dislocation. Duration of dislocation and anatomical considerations make the treatment challenging and controversial. Read More

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Comparison of temporomandibular joint function and morphology after surgical and non-surgical treatment in adult condylar head fractures.

J Craniomaxillofac Surg 2020 Mar 6;48(3):323-330. Epub 2020 Feb 6.

Department of Oral and Craniomaxillofacial Science, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic of China. Electronic address:

Purpose: The aim of this study was to evaluate whether surgical treatment can distinctly improve temporomandibular joint (TMJ) function and morphology in adult patients with condylar head fractures (CHFs) when compared with conservative treatment.

Patients And Methods: A retrospective study was performed to evaluate surgical and conservative outcomes in all patients who had suffered CHFs. In this study, all patients were divided into a surgical group and a conservative group. Read More

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Patient-specific implant modification for alloplastic bridging of mandibular segmental defects in head and neck surgery.

J Craniomaxillofac Surg 2020 Mar 3;48(3):315-322. Epub 2020 Feb 3.

Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany. Electronic address:

Displacement of the remaining mandibular segments may occur after alloplastic bridging of mandibular segmental defects using patient-specific reconstruction plates. Consequently, additional surgical devices are required for correct plate positioning. Patient-specific reconstruction plates with a conventional one beam-like design (cPSRP) have been modified by adding two flanges and giving a Y-shape to the distal ascending implant part to allow for segment positioning without using additional devices. Read More

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Traumatic medial clavicle fracture induced by chin bar of a full-face helmet following a downhill mountainbike accident.

Sportverletz Sportschaden 2020 Mar 18;34(1):48-50. Epub 2020 Feb 18.

Sportklinik Stuttgart GmbH, Stuttgart, Germany.

Downhill mountain biking is a rapidly growing sport. In our case we want to present an isolated medial clavicular fracture following a mountain bike accident with a critical review on the used protection device. A 35 year old healthy patient presented to our hospital after bike accident during downhill mountain biking in Austria with pain over his right medial clavicle. Read More

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MRI Changes in the Temporomandibular Joint after Mandibular Advancement.

J Oral Maxillofac Surg 2020 May 7;78(5):806-812. Epub 2020 Jan 7.

Lecturer, Department of Preventive and Social Medicine, Armed Forces Medical College, Pune, India.

Purpose: Esthetic dental and skeletal component correction can affect the temporomandibular joint (TMJ). Arthrogenic TMJ dysfunction can be present in the joint at the outset or it can develop during the treatment or later. The aim of the present study was to examine the changes found on magnetic resonance imaging (MRI) studies of the TMJ in patients with skeletal Class II malocclusion who had undergone combined orthodontic and bilateral sagittal split ramus osteotomy (BSSRO) advancement. Read More

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A rat model for inducing temporomandibular anterior disc displacement experimentally.

J Oral Sci 2020 ;62(1):70-74

Orofacial Pain Management, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.

The aim of this study was to establish an experimental rat model of temporomandibular joint (TMJ) anterior disc displacement (ADD). A pilot study was conducted to determine the most appropriate surgical protocol. In the main experiment, 40 rats were used. Read More

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January 2020