The term “ available bone “ is particularly important in implant dentistry, and describes the edentulous area under consideration for implant in terms of dimensions ( width, height, and length), angulation, and quality, which reflects the density of the bone. Going from most dense to least dense.
Sufficient quantity of bone is the primary condition necessary for the use of endosteal implants. In general, bone loss occurs with immobilization or reduced stress in the body. This decrease of bone begins within a few months, continues long term, and affects cortical and trabecular bone.
When teeth lost, the alveolar bone starts to lose dimension (first width, then height) and density.
The degree of bone density is directly related to stress – the greater the physiological stress, the denser the bone. When the tooth and the stress it transmitted are lost, the local alveolar process begins to remodel itself, with more bone being resorbed than formed, since the requirements of the bone to respond to stress have been reduced.
Progressive alveolar bone loss of up to 60% can occur in the first two to three years following tooth loss. The longer the alveolar bone is edentulous, the less trabeculae are present..
Dr. Natalia Demianko
DDS / 2015