Skeletal changes after experimentally displaced condylar process fracture in growing rats

Teixeira, Vanessa Castelo Branco; Teixeira, Antônio Castelo Branco; Luz, João Gualberto de Cerqueira

doi:10.1016/j.jcms.2006.01.006

Cited by 19 publications

(26 citation statements)

References 23 publications

(32 reference statements)

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“…Cephalometric evaluations from radiographs of specimens using a computer system, as in this study, lead to reliable measurements, reducing technical difficulties 5,9,28 . Distances found were similar to those noted in other experiments 5,28,29 . In the cephalometric evaluation it was possible to measure linear distances, and also the mandibular deviation, by measuring the angles α and Â 3,5,9,30,31 .…”

Section: Discussionsupporting

confidence: 90%

“…Facial asymmetry is a consequence of the unfavorable healing of condylar fractures 3,5,32,33 and it is important to know the role of drug treatments in this outcome. Studies are being conducted in order to understand the effect of these drugs on the healing of condylar fractures.…”

Section: Cephalometric Evaluations Identified Significantmentioning

confidence: 99%

“…A favourable prognosis has been reported when these fractures are treated by closed methods 3 . The ability of the ascending ramus to repair and remodel following trauma has been tested experimentally 4,5 .…”

Section: Introductionmentioning

confidence: 99%

“…Callus formation, with simultaneous repositioning of the condyle, can lead to normal temporomandibular joints 5,6 . However, there is some concern regarding skeletal changes, represented by mandibular asymmetry [7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

“…The experimental model of condylar fracture, unilateral and medially displaced, allows the histological study of healing of fracture and articular sites 3,6 , as well as allows cephalometric analyses of their effects on facial structures 5,9 . This model follows the most frequent form of mandibular condyle fracture 1,2,10 .…”

Section: Introductionmentioning

confidence: 99%

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Facial symmetry evaluation after experimentally displaced condylar process fracture in methotrexate treated rats

Cavalcanti¹,

Corrêa

Luz³

2012

Acta Cir. Bras.

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PURPOSE: To investigate the facial symmetry of high and low dose methotrexate (MTX) treated rats submitted to experimentally displaced mandibular condyle fracture through the recording of cephalometric measurements. METHODS: One hundred male Wistar rats underwent surgery using an experimental model of right condylar fracture. Animals were divided into four groups: A - saline solution (1mL/week); B - dexamethasone (DEX) (0,15mg/Kg); C - MTX low dose (3 mg/Kg/week); D - MTX high dose (30 mg/Kg). Animals were sacrificed at 1, 7, 15, 30 and 90 days postoperatively (n=5). Body weight was recorded. Specimens were submitted to axial radiographic incidence, and cephalometric mensurations were made using a computer system. Linear measurements of skull and mandible, as well as angular measurements of mandibular deviation were taken. Data were subjected to statistical analyses among the groups, periods of sacrifice and between the sides in each group (α=0.05). RESULTS: Animals regained body weight over time, except in group D. There was reduction in the mandibular length and also changes in the maxilla as well as progressive deviation in the mandible in relation to the skull basis in group D. CONCLUSION: Treatment with high dose methotrexate had deleterious effect on facial symmetry of rats submitted to experimentally displaced condylar process fracture.

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Section: Discussionsupporting

confidence: 90%

Section: Cephalometric Evaluations Identified Significantmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Facial symmetry evaluation after experimentally displaced condylar process fracture in methotrexate treated rats

Cavalcanti¹,

Corrêa

Luz³

2012

Acta Cir. Bras.

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Mandibular Fracture and Dislocation in a Case Study from the Jewish Cemetery of Lucena (CÓRDOBA), in South Iberian Peninsula (8th–12th ad)

Luca

Viciano

Irurita

et al. 2011

Intl J of Osteoarchaeology

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The skeletal remains of an adult female have been exhumed in an 11th century tomb in the mediaeval Jewish cemetery of Ronda Sur, in the city of Lucena (Córdoba, Spain). Examination of the skull and mandible revealed evidences of bilateral condylar fracture and dislocation. Lesions were observed macroscopically and radiology was used as a complementary method of scrutiny, especially in cases of unclear observation. Irregular morphology of the condyles and coronoid processes, shallow glenoid fossa, altered and abnormal joint surfaces anterior to the glenoid fossa, and reduced height of both ascending rami were observed. Antemortem tooth loss, slight wear of occlusal surface and asymmetrical occlusal deposit of dental calculus were found. Radiologically, degenerative changes in the condyles and reparative bone in both coronoid processes have been identified. Dislocation of the condyles and lack of adequate treatment probably led to disruption of masticatory patterns and related structures, such as muscle attachments, articular disc and ligaments. Bilateral remodelled fracture and the altered appearance of the joint structures could probably mean that the individual survived the injury by several years. This type of fracture could be the consequence of direct blow to the mental or submental region that was transmitted in a direction that raised the mandible, causing the condylar head to collide directly with the mandibular fossa. Very few mandibular fractures in ancient skulls have been described in Spain, and this case is the first example found in a Spanish archaeological skeletal assemblage.

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Histological and histomorphometric investigation of the condylar cartilage of juvenile pigs after anterior mandibular displacement

Proff

Gedrange

Franke

et al. 2007

Annals of Anatomy - Anatomischer Anzeiger

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Skeletal changes after experimentally displaced condylar process fracture in growing rats

Cited by 19 publications

References 23 publications

Facial symmetry evaluation after experimentally displaced condylar process fracture in methotrexate treated rats

Facial symmetry evaluation after experimentally displaced condylar process fracture in methotrexate treated rats

Mandibular Fracture and Dislocation in a Case Study from the Jewish Cemetery of Lucena (CÓRDOBA), in South Iberian Peninsula (8th–12th ad)

Histological and histomorphometric investigation of the condylar cartilage of juvenile pigs after anterior mandibular displacement

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