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Maxillofacial Plastic and Reconstructive Surgery
Fig. 4 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 4

From: Botulinum toxin A injection into the anterior belly of the digastric muscle increased the posterior width of the maxillary arch in developing rats

Fig. 4

The schematic illustration of the effect of the lateral pterygoid muscle hyperactivity to the growth of the mandibular condyle and maxillary width. The hyperactivity of the lateral pterygoid muscle generates the tensional force to the mandibular condyle and pterygoid plate (black arrow). It contributes to the decrease of the bi-condylar width and increase of the maxillary width according to the posterolateral direction of the force

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