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Regulation of mandibular growth and morphogenesis Mina MCrit Rev Oral Biol Med 2001[]; 12 (4): 276-300The development of the vertebrate face is a dynamic process that starts with the formation of facial processes/prominences. Facial processes are small buds made up of mesenchymal masses enclosed by an epithelial layer that surround the primitive mouth. The 2 maxillary processes, the 2 lateral nasal processes, and the frontonasal processes form the upper jaw. The lower jaw is formed by the 2 mandibular processes. Although the question of the embryonic origin of facial structures has received considerable attention, the mechanisms that control differential growth of the facial processes and patterning of skeletal tissues within these structures have been difficult to study and still are not well-understood. This has been partially due to the lack of readily identifiable morphologically discrete regions in the developing face that regulate patterning of the face. Nonetheless, in recent years there has been significant progress in the understanding of the signaling network controlling the patterning and development of the face (for review, see Richman et al., 1991; Francis-West et al., 1998). This review focuses on current understanding of the processes and signaling molecules that are involved in the formation of the mandibular arch.|Animals[MESH]|Epithelium/embryology[MESH]|Gene Expression Regulation, Developmental[MESH]|Genes, Homeobox/physiology[MESH]|Growth Substances/physiology[MESH]|Humans[MESH]|Mandible/*embryology[MESH]|Mesoderm/physiology[MESH]|Morphogenesis[MESH]|Signal Transduction[MESH]|Transcription Factors/physiology[MESH] |
