Why is a dental implant divided into Grade 4 and Grade 5 titanium?

I believe that many friends have such a concern, that is: want to plant a tooth, but do not know how to choose the implant, especially when you see others to introduce a certain implant, said what pure titanium, titanium alloy, Titanium Grade 4, grade 5 titanium alloy, Titanium Grade 23, do not understand what is the meaning of the implant to understand the implant grade 4 pure titanium and grade 5 titanium alloy what are the differences between the specific.

Different materials and properties of implants

Before we expand on the differences between grade IV titanium and grade V titanium implants, let's first look at the material properties of implants.

Biological properties of implants

Biocompatibility: Whether the body will overreact to the implant, ensuring the stability of the osseointegration.

Biosafety: whether the implant material is non-toxic and harmless and whether the quality of the implant itself is up to standard.

Biofunctionality: whether the implant, after implantation, is compatible with the elastic modulus of the jawbone and can support the chewing function.

Physical properties of the implant

Whether the implant is susceptible to fatigue fracture under the influence of various forces in the oral cavity after implant placement.

Whether the mechanical indexes of the implant such as tensile strength, yield strength, hardness and modulus of elasticity are up to standard.

Chemical properties of the implant

Chemical stability: whether there is an oxidized layer on the surface of the implant to isolate the influence of the oral cavity on the implant to ensure the life of the implant.

Resistance to corrosion: If there is an oxidized layer on the implant, whether the oxidized layer can effectively resist external corrosion.

What are the advantages of grade 4 pure titanium implants?

In a previous article, we talked about the fact that "the higher the grade of titanium, the higher the hardness and affinity of the material", and we will now expand on why we have come to this conclusion.

Chemical composition

Composed of 99% or more pure titanium (Ti), with a small amount of trace elements, grade 4 pure titanium has a higher titanium content.

Strength and hardness

Compared to grade 5 titanium implants, there is a difference in the hardness of grade 4 pure titanium implants.

Resistance to corrosion

Titanium implant grade 4 has excellent corrosion resistance and is able to resist the erosion of substances in the oral cavity more effectively.

Biocompatibility

Compared to pure titanium and titanium alloys with implant grades 1 to 3, titanium implant grade 4 has an advantage in terms of biocompatibility.

Advantages of grade 5 titanium implants

After learning about the advantages of implant grade IV pure titanium, let's find out what the advantages of implant grade V titanium are.

Chemical composition

It consists of an alloy containing 90% titanium (Ti), aluminum (Al) and vanadium (V), with small amounts of trace elements.

Strength and hardness

Implant grade 5 titanium alloy has superior hardness and strength, with its hardness approaching that of stainless steel to some extent.

Resistance to corrosion

Titanium implant grade 5 is as resistant to oxides and other chemicals as titanium implant grade 4.

Biocompatibility

Compared to pure titanium implant grade 4, titanium implant grade 5 is more biocompatible.

Although there are different advantages of different grades of pure titanium and different grades of titanium alloys, the choice of implant should be based on the condition of the missing tooth and the patient's physical condition, etc., and should be decided by the implantologist, not the more expensive the better, or the cheaper the implant, the better. The Medical Titanium standard is ASTM F67 and ASTM F136.

It is generally recommended that if there are missing teeth and you do not know which implant to choose, it is recommended that you go to a regular chain of dental hospitals to have a comprehensive oral examination in time, so that you can understand the situation of your missing teeth on the one hand, and on the other hand, you can take treatment measures in time after a comprehensive examination, so as to avoid the problem of missing teeth from dragging on for a long time.