It is important to know what material can be used alongside the original material in order not to incur further deterioration. Damage can result from using a non-compatible resin that could, even years later, trigger a deterioration process that might not have been initially evident.
To this end, every viable restoration material that we find on the market is subjected to various tests for months, accelerating, where possible, the aging process. Photos taken with an electronic microscope at pre-established intervals provide a history of any changes that might have occurred. This research has started in 1997. Some of the materials dating back to that time are still being used, others have been replaced thanks to the research and collaboration of chemistry experts who keep us constantly updated.