The posterior areas of the mandible are often related with scarce bone volume, posing challenges for dental rehabilitation. The solution proposed in this tech offer is a screw retained dental prosthesis system specifically developed for these areas, when it is possible to place, at least, two short or extra-short dental implants. The increased crown height space in such clinical cases is related to bone stress compatible with marginal bone loss. Thus, this prosthetic concept is an alternative to vertical bone regeneration and represents a bone protective solution.
The rehabilitation of the posterior mandible is challenging due to bone remodeling after tooth loss and denture use.
To address this clinical situation, three common approaches are used: the all-on-four concept, short implants and bone augmentation.
The all-on-four solution may imply the extraction of viable anterior teeth, whilst bone augmentation surgical procedures are technically sensitive, complex, invasive, and may be associated with lower implant success rates. Short implants are often supporting increased crown height space prosthesis resulting in frequent failures of prosthetic components and marginal bone loss due to biomechanical stress.
An extensive analysis identified crown height space as a key factor in generating marginal bone stress. Thus, the proposed solution addresses this problem by introducing a mechanical fuse into the prosthesis, modifying its traditional anatomy. This modification reduces the stress generated on the marginal bone, resulting in a bone protective effect.
This invention represents a new concept for the rehabilitation of the posterior mandible when bone volume is scarce but sufficient for short implants. It’s a minimally invasive alternative to bone regeneration surgeries and avoids healthy teeth extractions.
It is cheaper, faster and easier to perform than the current alternatives.
To respond to the stress generated by the masticatory function, - particularly in cases with increased crown height space - this prosthetic system protects the marginal bone crest, supporting long-term implant success and overall rehabilitation outcomes.
This invention relates to the technical field of dental prosthesis. Although it was primarily developed for posterior mandible rehabilitation, it may be considered for application in different types of edentulism.
It is specifically designed for clinical situations with increased crown height space relative to the average measurement of the lost teeth anatomical crowns but may also be considered in the oral rehabilitation of oral cancer.
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