Fixed partial dentures missing teeth gap
adjacent natural teeth as support on both sides or one side of denture cement
retainers on natural teeth, patients can not own pick to wear. Fixed partial
denture materials, the most important of several materials are as follows:
1. Cobalt chromium alloy: corrosion
resistance, biocompatibility, and the price are higher than the nickel-chromium
alloy.
2. All-ceramic materials: biocompatibility
best gum irritation, allergic reactions. Repair is a metal-free, without any
impact on the results of magnetic resonance imaging and other test.
Inadequacies, due to the different intensity, some of the material does not
apply to all tooth position, some special processing techniques result in
relatively high prices.
3. Titanium alloy: contain trace amounts of
titanium, is still a nickel-based alloy. High strength, corrosion resistance
and dental supplies oxidation resistance of clinical basic requirements.
4. Precious metal alloys: excellent
corrosion resistance, good oxidation resistance, adaptation and biocompatible
is ideal metal crowns restorative materials. The price is relatively high.
5. Nickel-chromium alloy: an alloy commonly
used in domestic, has good strength and porcelain bond force, and stable
long-term effect. The drawback is that there will be metal composition of free
long-term use of the active metal and chemical properties in the mouth, because
gum black lines, and therefore for anterior teeth will affect the aesthetic
effect. In addition, some people are allergic to There are several types of porcelain teeth nickel metal known nickel
allergy caution.
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