ISSN : 0376-4672
The aims of occlusal adjustment are as follows: to eliminate occlusal interference, to redirect force generated during function to which is favorable for teeth, to improve mastication efficiency and simultaneously establish stable maximal intercuspation or centric occlusion. Also, it should permit mandible to move freely from all positions. The sequence of occlusal adjustment in natural teeth and fixed prosthesis shall be as follows: 1) Eliminate interference that prevent optimal intercuspation and recontouring adjustment 2) Establish maximal intercuspation 3) Eliminate interference in lateral mandibular movement 4) Eliminate interference in anterior mandibular movement 5) Refine occlusal relationships.
In an edentulous situation, the oral rehabilitation with complete denture is substantially different from treatment of natural teeth. The artificial teeth arrangement and occlusion are important factor for the stability of the denture. Bilateral balanced occlusion is that stability of the denture is attained when bilateral contacts exist throughout all excursion and static states of the denture during function and, artificial teeth are arrangement in neutral zone where the forces between the tongue and cheeks or lips are equal. This is how dentist make a favorable prognosis. Therefore, dentists are have to be a little more involved in the selection and arrangement of artificial teeth.
The appropriate occlusion is one of the most important factors for the long-term success of implant and its restorations. The purpose of this review is to investigate and define occlusal considerations to reduce failure of implant prostheses. The physiological movement of implants is markedly lower than that of natural teeth and they also lack in occlusal sensitivity. Proper occlusal pattern may be assigned to compensate for the biological disadvantages and occlusal contacts must be formed where the cantilever effect is minimized. Moreover, the long-term success of implants after osseointegration can be assured by reducing early occlusal loading to avoid implant overloading and selecting appropriate occlusion material. Occlusal overload was brought by the number and location of occlusal contacts, which are under the clinician's control. The concept of implant occlusion is based on the concepts derived from traditional prosthetics. Moreover, there are few evidence on the concept or design of implant occlusion. Several occlusal design was recommended for implant prosthesis. Mutually protected occlusion, group function occlusion and bilateral balance occlusion was recommended for the specific types of implant restorations. This article reviews proper design of occlusion for implant restoration and offers occlusion strategy clinically.
