Objetive:

The purpose of this research was to determine the pattern of reabsorption of bone tissue from rehabilitated implants with acrylic crowns that act as supports of a removable partial denture with extra-coronary retainers.

Material and method:

To measure this effect, a device was designed to standardize the measurement of the bone level by a retro-alveolar radiography with parallelism exposure technique, considering that this procedure allows to observe great amount of details, offering an image of high definition, with a minimum distortion, low cost and minimal risk of radiation.

The results: indicate that in a six-month interval measured after rehabilitation at 24 and 30 months respectively a bone resorption is observed, which on average reaches 0.12 mm, this difference being statistically significant between both recording times.

Conclusion:

The resorption patterns of our research are similar to those that occur with other forms of rehabilitation on osseointegrated implants.

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