Changes in mandibular rotation after muscular resection. Experimental study in rats

Navarro, Martin J.; Delgado, Emilio; Monje, Florencio

doi:10.1016/s0889-5406(95)70034-x

Cited by 37 publications

(28 citation statements)

References 23 publications

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“…6 However, it is known that when the temporal muscle is removed from its cranial origin, no coronoid process changes take place. This is explained by the maintenance of an intact blood supply to this structure.…”

Section: Introductionmentioning

confidence: 99%

Effects of temporal muscle detachment and coronoidotomy on facial growth in young rats

2012

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This study analyzed the effects of unilateral detachment of the temporal muscle and coronoidotomy on facial growth in young rats. Thirty one-month-old Wistar rats were distributed into three groups: detachment, coronoidotomy and sham-operated. Under general anesthesia, unilateral detachment of the temporal muscle was performed for the detachment group, unilateral coronoidotomy was performed for the coronoidotomy group, and only surgical access was performed for the sham-operated group. The animals were sacrificed at three months of age. Their soft tissues were removed, and the mandible was disarticulated. Radiographic projections-axial views of the skulls and lateral views of hemimandibles-were taken. Cephalometric evaluations were performed, and the values obtained were submitted to statistical analyses. There was a significant homolateral difference in the length of the premaxilla, height of the mandibular ramus and body, and the length of the mandible in all three groups. However, comparisons among the groups revealed no significant differences between the detachment and coronoidotomy groups for most measurements. It was concluded that both experimental detachment of the temporal muscle and coronoidotomy during the growth period in rats induced asymmetry of the mandible and affected the premaxilla.

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Section: Introductionmentioning

confidence: 99%

Effects of temporal muscle detachment and coronoidotomy on facial growth in young rats

2012

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“…Much research on the impacts of masticatory function on craniofacial growth postulates that reduced masticatory function causes a reduction in craniofacial growth 4,11,14,20,22,24 . Some studies indicate that reduced masticatory function can result in a reduced thickness of the cortical bone, decreased bone density, and delayed growth of the articulare 5,25 .…”

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confidence: 99%

Masseter muscle fibre changes following reduction of masticatory function

Tsai

Lin

et al. 2012

International Journal of Oral and Maxillofacial Surgery

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“…Therefore, based on current anatomical understanding, the pivot point for mandibular rotation is proposed at the pterygomasseteric sling (PtmS) which is formed by the blended aponeuroses of the masseter and medial pterygoid muscles at the angle of the mandible [102, 103]. Horizontal motion of the mandible is allowed as the sling cradles the mandible, in addition to mandibular rotation around the “true” pterygomasseteric sling (PtmS).…”

Section: Support For the Proposed Modelmentioning

confidence: 99%

The Aponeurotic Tension Model of Craniofacial Growth in Man

Standerwick¹,

Roberts²

2009

Open Dent J

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Abstract:Craniofacial growth is a scientific crossroad for the fundamental mechanisms of musculoskeletal physiology. Better understanding of growth and development will provide new insights into repair, regeneration and adaptation to applied loads. Traditional craniofacial growth concepts are insufficient to explain the dynamics of airway/vocal tract development, cranial rotation, basicranial flexion and the role of the cranial base in expression of facial proportions. A testable hypothesis is needed to explore the physiological pressure propelling midface growth and the role of neural factors in expression of musculoskeletal adaptation after the cessation of anterior cranial base growth. A novel model for craniofacial growth is proposed for: 1. brain growth and craniofacial adaptation up to the age of 20; 2. explaining growth force vectors; 3. defining the role of muscle plasticity as a conduit for craniofacial growth forces; and 4. describing the effect of cranial rotation in the expression of facial form. Growth of the viscerocranium is believed to be influenced by the superficial musculoaponeurotic systems (SMAS) of the head through residual tension in the occipitofrontalis muscle as a result of cephalad brain growth and cranial rotation. The coordinated effects of the regional SMAS develop a craniofacial musculoaponeurotic system (CFMAS), which is believed to affect maxillary and mandibular development.

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Changes in mandibular rotation after muscular resection. Experimental study in rats

Cited by 37 publications

References 23 publications

Effects of temporal muscle detachment and coronoidotomy on facial growth in young rats

Effects of temporal muscle detachment and coronoidotomy on facial growth in young rats

Masseter muscle fibre changes following reduction of masticatory function

The Aponeurotic Tension Model of Craniofacial Growth in Man

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