Licence: Public Domain Mark
Credit: Dental mechanics / by Harry Rose. Source: Wellcome Collection.
Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.
426/512 (page 40)
![The front section is now removed, lubticated with vaseline, and tissue paper adapted to it. The plate on the model is next cleared of teeth and wax, rubbed with vaseline., and covered with tissue paper. The front section is now adapted to the model, and the teeth, after being thoroughly cleaned are ready to be inserted in their respective places. It is as well to mould the front block first, and the teeth should be hollowed out at the back to allow of as big a bulk of material (Mineral Compound) as possible, and also to permit of the recesses being made in the base of the block for the purposes of fastenings. The adjustment of the teeth and packing in of the compound has teen already described. It must be understood that the frout six teeth forming the block should be dried and fired first. After the block has been moulded, diied, and removed from the plate or model, recesses or cavities may be made in tbe base of it, with a bur on the engine, and dovetailed by means of an inverted cone. ]f ihe block be too fragile, it should be biscuited, that is, made red hot in the furnace for a minute or two, when it may be handled without risk. We now place the block in eilex as previously described, and insert carefully in the furnace and fire until quite hard. When cold the distal extremities of the block are ground and bevelled the same as for gum sections, and are then rubbed with a little vaseline, a small piece of tissue paper being adjusted to them.- The front block is once more placed on the model and the section for that, as well as for the two side blcckp, adjusted io the n cdel. Tl ese latler must of](https://iiif.wellcomecollection.org/image/b21449727_0426.jp2/full/800%2C/0/default.jpg)
