Fractures of the mandible

2021 ◽  
pp. 793-800
Author(s):  
Lachlan M. Carter
Keyword(s):  
Skull Base ◽  
Stable Fixation ◽  
Lower Face ◽  
Floor Of Mouth ◽  
Temporomandibular Joints ◽  
Mandible Fractures ◽  
Muscles Of Mastication ◽  
Dentate Patient ◽  
Mobile Tongue

The mandible forms the lower face and supports the teeth, the diaphragm of the floor of mouth, and the mobile tongue. It articulates with the skull base via the temporomandibular joints and is controlled by the muscles of mastication. Fractures of the mandible are common and require accurate reduction and stable fixation, particularly in the dentate patient. The anatomy, pathology, and management of mandible fractures are described in this chapter.

Advancement cheiloplasty for reconstruction of floor of mouth defects

1994 ◽  
Vol 108 (6) ◽  
pp. 486-489 ◽  
Author(s):  
John S. Rubin
Keyword(s):  
Dental Implant ◽  
Free Flaps ◽  
Skin Grafts ◽  
Lower Lip ◽  
Significant Challenge ◽  
Floor Of Mouth ◽  
Oncologic Resection ◽  
Variable Success ◽  
Mobile Tongue ◽  
Marginal Mandibulectomy

AbstractIn many cases of carcinoma of the floor of mouth, oncologic resection includes marginal mandibulectomy. Reconstruction poses a significant challenge. Requirements include coverage with thin but supple tissue to allow for dental implant or denture, and recreation of a mobile tongue and sensate floor of mouth gutter. Reconstructive efforts have ranged from skin grafts to free flaps, with variable success in fulfilling the above-mentioned requirements.This paper describes the preferred technique of the author, in which external mandibular periosteum is saved and elevated with a submucosal flap of lower lip, raised to the level of the vermilion border. This flap is then advanced to ventral tongue. In this manner the entire anterior floor of mouth can be reconstructed.Cases are presented demonstrating different aspects to the technique.

The temporomandibular joints, muscles of mastication, and the infratemporal and pterygopalatine fossae

2013 ◽  
Author(s):  
Martin E. Atkinson
Keyword(s):  
Temporal Bone ◽  
Articular Surface ◽  
Mandibular Condyle ◽  
Jaw Movements ◽  
Synovial Joints ◽  
Articular Surfaces ◽  
Temporomandibular Joints ◽  
Mandibular Fossa ◽  
Muscle Groups ◽  
Muscles Of Mastication

It is essential that dental students and practitioners understand the structure and function of the temporomandibular joints and the muscles of mastication and other muscle groups that move them. The infratemporal fossa and pterygopalatine fossa are deep to the mandible and its related muscles; many of the nerves and blood vessels supplying the structures of the mouth run through or close to these areas, therefore, knowledge of the anatomy of these regions and their contents is essential for understanding the dental region. The temporomandibular joints (TMJ) are the only freely movable articulations in the skull together with the joints between the ossicles of the middle ear; they are all synovial joints. The muscles of mastication move the TMJ and the suprahyoid and infrahyoid muscles also play a significant role in jaw movements. The articular surfaces of the squamous temporal bone and of the condylar head (condyle) of the mandible form each temporomandibular joint. These surfaces have been briefly described in Chapter 22 on the skull and Figure 24.1A indicates their shape. The concave mandibular fossa is the posterior articulating surface of each squamous temporal bone and houses the mandibular condyle at rest. The condyle is translated forwards on to the convex articular eminence anterior to the mandibular fossa during jaw movements. The articular surfaces of temporomandibular joints are atypical; they covered by fibrocartilage (mostly collagen with some chondrocytes) instead of hyaline cartilage found in most other synovial joints. Figures 24.1B and 24.1C show the capsule and ligaments associated with the TMJ. The tough, fibrous capsule is attached above to the anterior lip of the squamotympanic fissure and to the squamous bone around the margin of the upper articular surface and below to the neck of the mandible a short distance below the limit of the lower articular surface. The capsule is slack between the articular disc and the squamous bone, but much tighter between the disc and the neck of the mandible. Part of the lateral pterygoid muscle is inserted into the anterior surface of the capsule. As in other synovial joints, the non-load-bearing internal surfaces of the joint are covered with synovial membrane.

The mandible

2021 ◽  
pp. 63-92
Author(s):  
Daniel R. van Gijn ◽  
Jonathan Dunne
Keyword(s):  
Facial Expression ◽  
Facial Bones ◽  
Shaped Body ◽  
Floor Of Mouth ◽  
The Face ◽  
Muscles Of Mastication

The mandible is the largest of the facial bones, occupying a prominent position upon and providing the foundation for the lower third of the face. Despite holding the honour of being the strongest bone in the face, its protrusive location makes it vulnerable to injury – particularly in relation to aggressively placed fists, steering wheels and concrete. Anatomically, the mandible consists of a symmetrical, horseshoe shaped body continuous with paired broad rami posteriorly. The former houses the lower teeth within the alveolus whilst the latter provides attachment for the four principle muscles of mastication from the its medial and lateral surfaces and coronoid and condylar processes. In addition to the aforementioned muscles of mastication, the mandible provides origin to the muscles of the tongue, the floor of mouth and some muscles of facial expression.

TMJ imaging: more pictures, less talk

2011 ◽  
Vol 2 (4) ◽  
pp. 172-182 ◽  
Author(s):  
Jimmy Makdissi de C Williams
Keyword(s):  
Rheumatoid Arthritis ◽  
Skull Base ◽  
Temporomandibular Joint ◽  
Temporal Bone ◽  
Mandibular Condyle ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Number Of Factors ◽  
Muscles Of Mastication ◽  
Anatomical Area

The temporomandibular joint (TMJ) is a complex anatomical area consisting of the mandibular condyle and the temporal bone of the skull base. It comes under the influence of a number of factors including the muscles of mastication, teeth, occlusion and the contralateral joint and thus there exists a spectrum of conditions. Internal derangement and degenerative joint disease remain the most common although there are a range of other less frequently occurring conditions such as rheumatoid arthritis, trauma and ankylosis.

Prognostic factors in mobile tongue and floor of mouth carcinoma

Cancer ◽  
1989 ◽  
Vol 64 (6) ◽  
pp. 1195-1202 ◽  
Author(s):  
Bert Brown ◽  
Leon Barnes ◽  
Juan Mazariegos ◽  
Floyd Taylor ◽  
Jonas Johnson ◽  
...  
Keyword(s):  
Prognostic Factors ◽  
Floor Of Mouth ◽  
Mobile Tongue

Effect of intersource spacing on local control and complications in brachytherapy of mobile tongue and floor of mouth

1993 ◽  
Vol 26 (1) ◽  
pp. 19-25 ◽  
Author(s):  
J.M. Simon ◽  
J.J. Mazeron ◽  
S. Pohar ◽  
C. Le Nchoux ◽  
J.M. Crook ◽  
...  
Keyword(s):  
Local Control ◽  
Floor Of Mouth ◽  
Mobile Tongue

Curietherapy of Oral Cancer

1982 ◽  
Vol 68 (2) ◽  
pp. 119-125 ◽  
Author(s):  
Fabio Volterrani ◽  
Fausto Chiesa ◽  
Roberto Molinari
Keyword(s):  
Oral Cancer ◽  
Hard Palate ◽  
Combined Treatment ◽  
Disease Free Survival ◽  
Free Survival ◽  
Floor Of Mouth ◽  
Disease Free ◽  
Mobile Tongue ◽  
Nodal Relapse

This work concerns 406 oral carcinomas treated with curietherapy (interstitial applications and surface molds) from January 1959 to December 1970. There were 65 (16.0%) carcinomas of the mucosal surface of cheeks, 15 of the retromolar areas, alveolus and gingiva, and hard palate (3.7%), 211 of the mobile tongue (51.9%), and 115 of the floor of mouth (28.4%). There were 132 (32.5%) T1 cases, 245 (60.3%) T2 and 29 (7.2%) T3. In 376 cases with adequate follow-up (92.6%) there were 93 (24.7%) local relapses: 83 isolated and 10 associated with a lymph nodal relapse; 49.5% of the local relapses were peripheral with respect to the treated volume (46/93). The incidence of local relapses only slightly differed for initially T1 and T2 cases (respectively 21.8% and 22.7%), whereas it was more than twice as much for initially T3 cases (53.6%). The overall incidence of radionecrotic complications was 22.0% (83/376 cases with adequate follow-up). Altogether the disease-free survival was 41.1% and 31.4% at 5 and 10 years, respectively. We think that local control of practically all treatable oral carcinomas can be obtained with a combined treatment.

Sign in / Sign up

Export Citation Format

Share Document