Abstract
The purpose of this study was to analyze the stress distribution of the teeth and the mandibular bone when a Konuskronen telescope denture was applied. The analysis was conducted by using the finite element method and changing the conditions such as thedirection of the load, the level of the bone supporting the abutments, and the number of the abutments. The model included canine, premolars, a distal-extension Konuskronen telescope denture, and their supporting structures.
The joint element reported at Part 1 was used in order to simulate the conditions of the contact area between outer and inner crowns of the abutments.
The results of analysis indicated the followings.
When the vertical load was applied, the stresses were distributed to the abutments and their supporting bone. However, when the load was applied 45deg; to the vertical axis, the stresses in the bone supporting the denture base were increased.
As the level of the bone supporting the abutments was reduced, the stresses increased and concentrated to the second premolar.
The stresses of two-abutment model were larger than that of the three-abutment model. This indicated that the use of more teeth for the abutments of the removable partial denture was mechanically desirable.
