Dental Implants: Metal Composition

I recently had cause to investigate the metal composition of dental implant fixtures.

I was surprised at the number of dental implants that traditionally have been made from commercially pure titanium and the small number made from alloy (e.g., 6% aluminum and 4 % vanadium). According to the literature, the alloy is stronger than the commercially pure titanium. So why are so many of the dental implants on the market being made from commercially pure titanium instead of alloy?



8 thoughts on “Dental Implants: Metal Composition

  1. Anonymous says:

    Biocompatibility can not be an issue as it is the material of choice for most non-cemented hip stems or tibial platforms for artificial knee joints.
    The modus of elasticity is actually almost identical for pure Titanium and a Titanium alloy. The difference is in the elongation at yield stress.

    (0)
  2. Daniel says:

    The greater Ti composition (CPti type 1 or 2ยจ, the less amount of free radicals from other components thet would affect Oxidation of surface. We must remember that oxide layer composition and thickness, plus enhance passivity of alloy with cpti improves surface quality, enhancing bone healing, thus osseointegration. Alloys are the choice with thin implants, 3.4 or less of diameter. Implant fractures of larger diameter implants are very rare. In fact in over 10 years of clinical experiencia i have had only one several years ago related to poor case and patient selection(parafunction, standard diameter and wide prosthetics), that correlates the literature case reports.
    lack of serious long term reports on alloys is evident as well as manufacturer driven implant system selection.

    (0)
  3. gerard says:

    the problem associated with alloys used in dental implants is not biocompatibility but corrosion. Most alloys used contain aluminium and vannadium and both of these placed in a living environnement are much more subject to corrosion than CP titanium.
    The ions of these metals can bond to proteins and create what is called an hapten which can, in sensible subjects, lead to serious allergic or anaphylactic responses.
    so most manufacturers of dental implants prefer metallurgic treatment of titanium to improve rigidity instead of using alloys…

    (0)
  4. Abhinav says:

    The issues in the choice of the material are biocompatibility and mechanical properties. With no direct evidence of any medical problem with leaching of ions (Al, Vanadium) with the use of Grade 5A Ti (Ti-6 Al- 4V) in implants one should consider the mechanical properties. The modulus of elasticity of the implant material should be as close to that of bone to prevent bone loss by a phenomenon called” stress shielding” while providing good yield strength to prevent mechanical failure especially in narrow diameter implants. Grade 5A does provide much better strength than Cp Ti with only a marginal increase in Modulus thus making Grade 5A acceptable and is used by quite a lot of systems -Biohorizons,Endopore,sterioss,bicon,biolok,impladent

    (0)
  5. Steven Silberg says:

    Why are you concerned with “stress shielding”? I have yet to see an implant lost due to under stimulation.Stress shielding I dont think happens in the dentofacial complex. More specifically the mouth. If it were the rule then implants could not successfully be put to sleep and later put in functional load. Stress shielding may occurr outside the oral cavity. This concept was developed by Frost back in the 80’s. MechanostatTHEORY.Its not a rule or a law in bone physiology to the best of my knowledge.

    (0)

Leave a Comment:

Comment Guidelines: Be Yourself. Be Respectful. Add Value. For more details, read our comment guidelines. Though we require an email to comment, we will NEVER publish your email.
Required fields are marked *

Posted in Dental Implant Systems.
Bookmark Dental Implants: Metal Composition

Videos to Watch:

Titanium Mesh for Ridge Augmentation

The use of titanium mesh is a reliable method for ridge augmentation to provide adequate[...]

2 Comments

Watch Now!
Implant Grafting Techniques: Demineralized Sponge Strip and Tunneling

This video reviews several unique grafting and surgical techniques, including the use of demineralized cancellous[...]

Watch Now!
Mandibular Fixed Screw Retained Restoration

This video shows the use of a surgical guide for a mandibular fixed screw retained[...]

1 Comment

Watch Now!
Clinical Tip for Fixation of a Collagen Membrane

This video provides a clinical tip with regards to the fixation of a collagen membrane.[...]

Watch Now!
Lower Molar Extraction with Graft

Video showing lower left first molar extraction, followed by a socket graft, and then immediate[...]

3 Comments

Watch Now!
Maxillary Bone Reconstruction

This video demonstrations Maxillary Bone Reconstruction using Subnasal Floor Elevation and an Osteotome Closed Approach[...]

Watch Now!
Infection of Lower Premolar: Extract and Place Implant

In this video, the lower left 2nd premolar was extracted due to infection, and implants[...]

Watch Now!
Flapless Immediate Implant and Provisional

This video shows a technique showing using the patient's own tooth as a provisional at[...]

Watch Now!
Extraction and Immediate Implant with Luxator LX

Extraction of tooth #8, using Luxator LX, and then an immediate implant and provisional.[...]

3 Comments

Watch Now!
Dealing with the Implant Gap

This short video discusses how to best deal with the gap after immediate implant insertion[...]

1 Comment

Watch Now!
Lower Right Molar Extraction & Immediate Implant Placement Using i-PRF

In this video, the lower right second molar was extracted and grafted with i-PRF and[...]

13 Comments

Watch Now!
Maxillary Implantation with Treatment of Chronic Sinusitis

This video shows two cases where implants were placed following treatment of Sinusitis. [...]

3 Comments

Watch Now!