Based on the structure of standard occlusion textbooks and the author's known references, page 58 typically deals with the relationship between the mandible and the maxilla, specifically discussing and its distinction from Centric Occlusion (CO) or Maximum Intercuspation (MI).
The practical application of the Ash and Ramfjord text extends heavily into the treatment of temporomandibular disorders (TMD) and occlusal trauma. Occlusal Adjustment (Equilibration)
This article explores the core principles of dental occlusion taught by Ash and Ramfjord, the TMJ, and why studying these concepts remains vital for modern dental practice. The Foundations of Dental Occlusion Occlusion Ash Ramfjord Pdf 58
A core focus of the text is distinguishing between joint position and tooth position:
Ramfjord and Ash were pioneers in linking occlusion to periodontitis. In their famous 1981 paper, "Significance of occlusion in the etiology and treatment of early, moderate, and advanced periodontitis," they argued that while occlusion does not cause periodontitis, trauma from occlusion can be a major co-destructive factor. The diagnostic process described on page 58 (analyzing the starting relationship of the jaws) is the first step in identifying where these traumatic forces are coming from. Based on the structure of standard occlusion textbooks
The Michigan splint, closely tied to the university where Ash and Ramfjord taught, is a hard acrylic maxillary appliance designed to provide a mutually protected occlusal scheme. It establishes temporary "freedom in centric" and immediate posterior disclusion, allowing the elevator muscles to relax and the condyles to seat comfortably in a centric position. The Modern Relevance of Classic Occlusal Concepts
You can find digital copies and previews of different editions on the Internet Archive and Google Books . The Foundations of Dental Occlusion A core focus
A state where the upper and lower teeth intercuspate perfectly in all mandibular movements, functioning without pain or pathology.