Collect information about the material used in production of denture.(A set of artificial teeth)
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Answer:
The Manufacturing
Process of Denture-
The manufacturing process begins with a preliminary impression of the patient's mouth, which is usually done in wax. This impression is used to prepare a diagnostic cast. While making the impression, the dentist applies pressure to the soft tissues to simulate biting force and extends the borders of the mold to adjacent toothless areas to allow the dentures to better adapt to the gums.
Once an appropriate preliminary cast has been obtained, the final cast is cast from gypsum, a stone-like product. The final mold is inspected and approved before using it to manufacture the teeth.
Denture
After the mold has been cast, it is filled with acrylic resin to form the denture. The mold is prepared with a release agent prior to adding the resin to ensure that the hardened acrylic can be easily removed once the process is completed. A sheet of separating film between the acrylic and the model is also helpful in this regard. The denturist then mixes the appropriate resin compounds in liquid form. Upon drying, the resin hardens to a durable finish.
This resin mixture is packed into the mold, while a vertical vise packs it tightly. At this point the model can be inspected to ensure it is filled properly, and if necessary additional resin can be added. Instead of vice packing, certain types of acrylic may be poured into the mold. This method is more prone to air bubbles than hand packing.
Once the mold is packed to the denturist's satisfaction, it is heated to initiate the chemical reaction which causes the resin to harden. This part of the process may take up to eight hours.
After the heating is done and the mold has cooled, the mold is broken apart so the denture may be removed.
The denture is then put in the model of the patient's mouth to ensure that it fits and that the bite is good. Because of the number of processing steps there may be a slight discrepancy in the fit. Usually just a minor grinding and smoothing of surfaces is all that is necessary to make the denture fit correctly.
At this point, if the denture is the removable type, it is ready for use. Implants require additional preparatory steps before they can be used. The denturist must drill the appropriate holes in the jaw bone and attach an anchor. After three to six months, when the hole has healed and the anchor is set in place, a small second surgical procedure is necessary to expose the implant and connect a metal rod to it that will be used to hold the crown or bridge. Finally, the replacement tooth is attached to the rod, where it is held firmly in place.