American Board of Orthodontics (ABO) Practice Exam

Moss attributes growth changes within the skeletal system primarily to functional matrix requirements. This concept emphasizes that the growth and development of bones and other skeletal structures are influenced by the functional demands placed upon them by surrounding tissues and their interactions. For instance, the growth of the jaw and its shape can be directly related to muscle function, dental occlusion, and other biological functions that require space and support. The functional matrix theory indicates that as the functional needs of the body change, the skeletal system adapts accordingly to accommodate these requirements, suggesting that biological activity and mechanical needs are fundamental drivers of skeletal growth and remodeling. This understanding is crucial in orthodontics, as it helps orthodontists comprehend how their interventions may influence not just dental alignment but also the underlying bone structure.