Generally speaking partial dentures tend to be held in place by the presence of the remaining natural teeth and complete dentures tend to rely on muscular co-ordination and limited suction to stay in place. The maxilla very commonly has more favorable denture bearing anatomy as the ridge tends to be well formed and there is a larger area on the palate for suction to retain the denture. Conversely, the mandible tends to make lower dentures much less retentive due to the displacing presence of the tongue and the higher rate of resorption, frequently leading to significantly resorbed lower ridges. Disto-lingual regions tend to offer retention even in highly resorbed mandibles, and extension of the flange into these regions tends to produce a more retentive lower denture. An implant supported lower denture is another option for improving retention.
Processing a denture is usually performed using a lost-wax technique whereby the form of the final denture, including the acrylic denture teeth, is invested in stone. This investment is then heated, and when it melts the wax is removed through a spruing channel. The remaining cavity is then either filled by forced injection or pouring in the uncured denture acrylic, which is either a heat cured or cold-cured type. During the processing period, heat cured acrylics—also called permanent denture acrylics—go through a process called polymerization, causing the acrylic materials to bond very tightly and taking several hours to complete. After a curing period, the stone investment is removed, the acrylic is polished, and the denture is complete. The end result is a denture that looks much more natural, is much stronger and more durable than a cold cured temporary denture, resists stains and odors, and will last for many years.
I began to get suspicious when they refused to pull my teeth unless I agreed to buy their most expensive package. Being in a dire financial situation I really didn't have much a choice. The most expensive package isn't what I wanted but it was still far cheaper than getting work done elsewhere. I agreed and signed the necessary paperwork. My next appointment was going to be about a week later.
Later that afternoon I came back to have 16 teeth extracted. I got to the office and waited about 30 minutes before I was seen. I got to the back and began injections. After this I went to a full blown panic attack and came close to passing out. The one positive is the dentist who was working on me took it in stride. I wasn't treated disrespectfully and after about 30 minutes the panic subsided and she was able to finish my injections and begin pulling teeth.
She stormed out of the room shouting at me, "I'M NOT GOING TO DO IT. I DON'T HAVE TO DO IT." I told ** that Dr. ** had better do it. ** grabbed my arm (I was still sitting in the exam chair) and shook me, saying, "You don't talk to US like that." In a few minutes, Dr. ** returned and added length to my teeth, so that miraculously, after 61 years, I no longer looked like Elvis! And then she said, "We added lots and lots to your teeth!" The same teeth that minutes before didn't have anything wrong with them, according to her. One month later, her crummy addition to the partial is now crumbling off, and I again have lopsided teeth.
On the cheap or “discount denture” end, you get units with premade fits that often look artificial. Less expensive sets are generally made with lower quality materials and their warranties reflect that. In the end, cheap dentures lack the desired lifelike look, are more prone to crack or break outright, may have poor bite alignment, and are typically less comfortable.
The Premium Denture is very high in natural appearance. It features enhanced natural appeal, wear and stain resistance, with detailed customization. As with the UltimateFit and EconomyPlus Dentures, the Premium’s extra-high density teeth are first set in wax for you to try in. Changes may be made at that time. After you have approved the look of your Premium Denture, the lab will custom finish your denture in the permanent acrylic base material. This additional customization results in a more natural look.
