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Zygoma Implants to Retain Removable Partial Denture?

posted in Surgical Placement of Dental Implants, Dental Implant Systems, advice

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Anon. asks:

Does anyone have experience using zygoma implants to retain a removable partial denture? My patient is missing all maxillary posterior teeth (has natural teeth 6-11). Grafting and implants failed on the left but 2 implants worked just fine on the right. Can I use the two implants on the right plus one zygoma implant on the left as retention for a removable partial denture? What attachment system should I use for retaining the maxillary removable partial denture? Should I use full palatal coverage?

15 Responses to “ Zygoma Implants to Retain Removable Partial Denture? ”

• John Stedman DMD MD July 6th, 2009

  
  

  Zygoma implants are not for the faint at heart. I have done a couple but I am not an expert my any strench on zygoma implants.

  Dr. Tom Balshi is an expert, he has done many.

  There are a couple of nice articles on Zygoma implants. One articlew in JIACD - Journal of Implant and Advanced Clinical Dentistry in the April edition which can be viewed online.

  And One article in the ICOI Journal- Implant Dentistry in the May issue I believe which can be accessed online.

  Read up on it, it is a nice option to offer a patient with no bone.

• DR. B July 7th, 2009

  
  

  Which way has a higher success rate? sinus graft or zygomatic implant?

• Ed S July 7th, 2009

  
  

  I’ve been placing zygoma implants since 1991 initially in Sweden only, and in the U.S. since 1997. This case, as you’ve outlined, is NOT an indication for the use of the zygoma as anchorage.

• Ed S July 7th, 2009

  
  

  Oh, and by the way, the zygoma implants have a higher success rate than sinus grafting.

• sb oral surgeon July 7th, 2009

  
  

  To Ed S-
  Just wondering where your statement comes from regarding success rates with sinus grafting vs. zygoma fixtures. Is this in your hands, or a published study. No disrespect, but as someone who does both routinely, I’m always looking for info. I think one thing that we need to remember is the challenge that these compromised cases present to us. So “success rates” in my mind always need verification.
  Additionally, are you using CT planned surgery, and if so, what software.
  Thanks

• Ed S July 7th, 2009

  
  

  International Journal of Oral & Maxillofacial Implants… The Academy of Osseointegration’s official journal… publications of multi-center prospective study. I’m one of the centers and have had 100% success rate of osseointegration and none lost under prosthetic load of over 100 Zygoma fixtures, with personal U.S. follow-up now to 12 year mark. Multi-center results are only marginally less successful.

• Ed S July 7th, 2009

  
  

  Sorry. Forgot to add… I have not found any currently available commercial planning software which is ideal for Zygoma fixture planning surgery, but Nobel is currently developing software in Europe which will aid in planning even hemi-facial reconstructive cases.

• Eitan Mijiritsky July 8th, 2009

  
  

  I have more than 13 years of very good experience with the combination of teeth and implants as “strategic” abutments in cases of partially edentulous patients who needed a RPD. (you can find my articles on this topic on the Pub-med). I never used a zygomatic implant in those cases but I think that it is possible, just have to find a skilled surgeon to do this. If you have 2 implants at the posterior right, try to find place for at least one implant even at the PM zone and it will work fine. During the last years I use the Locator attachment. The major connector design can be a single broad palatal one and take in consideration to place (if you can)minor connectors in contact with vertical teeth surfaces in order to stabiize the RPD. Sorry for the long comment..

• ITC July 9th, 2009

  
  

  We’ve used iDent software to plan a zygoma case with a CBCT. It really pushed the limits of the software, but it worked!

• Dr.Abhijeet July 10th, 2009

  
  

  My Dear,
  Why dont you plan to have an mini implant in the system as with mini impants you don need to bother much region of placement.
  Think over it .
  Comments Invited.

• Dr Tushar July 11th, 2009

  
  

  I agree with the concern but in my opinion zygoma implants would be a more expensive solution can we not think of a angled abutment like a pallomalo technique
  well I am also looking for a answer my comments are to just push the discussion.

• Dr.Abhijeet , India July 12th, 2009

  
  

  Well i partly agree with the Dr Tushar but the discussion started with the faliure of the implants so with out the CXT test there are every chances of failure of Placement of another implant in the area.

• anand July 16th, 2009

  
  

  hi
  the zygomas are basically designed for a fixed option and hence will be supported by a procera implant bridge framework or with a abutment level framework but not a over denture retention attachments. in other words you will not find components to do an attachment
  regards

• anand July 16th, 2009

  
  

  also the rigidity for a zygoma is not much as it is stabilised at the zygomatic level and the length makes it vulnerable to fractures. only if is splinted it gains rigidity.

• jude July 25th, 2009

  
  

  friends i have a doubt i want to know how to place the prosthesis on zygoma implant since the head is angulated

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