[Compressibility of the tegumentum of the frontal maxillary crest with reference to the extent of model etchings]

Using a measuring technique developed by the authors, the compressibility of the tegmental ridge in the region of the center incisors was acertained. The indentation depth was determined at which blood circulation was disturbed and total anemia and/or pain was produced. Based on the measurements obtained, recommendations were made for the admissible and/or inadmissible extent of model etchings for the reception of bridge components.