Graftless open lateral sinus lift?

Is it possible to do an open lateral sinus lift, use an implant to tent the sinus membrane up, and reposition the lateral flap over the bony window without using graft or membrane? I have seen studies which have done this and bone has infilled around the implants in 6-9 months time. What are your thoughts on this technique? I use bTCP as my graft in lateral sinus cases but with the long resorption and turnover, I am looking for something that works quicker. What advice do you have?

20 Comments on Graftless open lateral sinus lift?

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peter Fairbairn
11/13/2014
Possibly change your BTcP as we routinely load at 10- 12 weeks even with only 1 or 2 mm of residual bone achieving Osstell readings in the high 70 s. Not using a material whilst it may work is definitely not optimal as a scaffold is a big help and sealing the window with a material that sets is helpful as well . The TcPs we have core sampled ( dozens of cases ) and our animal studies indicate up to 80% of the material has turned over at 10 weeks . Pubmed our rabbit study . Peter
a yong
11/14/2014
Hi Peter, thanks for reply. I thought all bTCP are the same, but obviously not. Can I check with you: 1) What is the graft you use for your open sinus lift cases? 2) Do you use a membrane to cover the lateral window? 3) Does the particle size of the bTCP matter? thanks in advance. Andrew
Robert J. Miller
11/14/2014
If you tent the membrane with the implant apex, all you need is L-PRF. There are several studies showing outstanding early healing and mineralization using autologous biologics alone (Z. Mazor and A. Simonpiere papers). Why use expensive alloplasts/allografts when you get a better biologic directly from the patient. My per case cost is always under $10 US, the patient appreciates not using tissue bank or synthetic bone substitutes, and you get 100% vital bone in the graft site. One additional reason I use it is that there is a near total absence of infectious events post-grafting. RJM
Peter Fairbairn
11/14/2014
Hi Dr Young like all cars are different , so are BTcP materials , the size and porosity are critical in their performance . I only use very small windows using Dask and prefer lateral as quick , easy and safe ( No tears in 4 and a half years doing a case or 2 per week ) so no membranes as the materials I use set due to a CaSo4 element and are thus stable . We feel that membranes may inhibit the healing process and thus I have not used 1 in the last 13 years . I agree Robert , about L-PRF and have seen a lot of great work with internal lifts using it with very impressive results . In fact I have invited Dr Choukron to come to speak to my group in London in 2 weeks time. But the 10 Dollars bill does not include the cost of the centrifuge and the training which must be factored in as well as the time ..... The BTcp ( with Caso4 ) is fully bio-absorbed over time and is Biocompatible and bacteriostatic ( I too have never had an infected sinus case )... Many different ways and materials which all work well in different hands Peter
a yong
11/14/2014
Peter, is your graft material btcp and caso4 mixed together, or do you place the btcp around the implant and use the setting caso4 to close the lateral window? Also what particle size btcp do you advise is best in your experience (the smaller particle size the better)?
Peter Fairbairn
11/16/2014
Yes mixed already and the Caso4 absorbs faster creating an increased porosity for vascular ingrowth and improved angiogenesis . It also provides and improved initial stability to the graft which leads to improved mesenchymal cell differentiation to Osteoblasts .Particle size I feel .1 - .5 is optimal from what we have seen in our Animal and case studies Yes PRF is great in the sinus but a regular GDP I like flexability of these materials , I use the same cost effective (Euros 80 ) material for all grafting procedures ( Defect repair , Tunnel grafts , Peri-Implant grafts , perio repair etc ) including sinus augmentation. As a GDP I need bone regeneration to be easy , patient friendly , fast and most of all very consistent. Regards Peter
a yong
11/16/2014
Hi Peter. Thanks for the reply. What is the brand name of the product you are referring to please, so I can check it out? Also do you routinely soak the graft in the patient's blood before placing, or do you place the graft in as is?
peter Fairbairn
11/18/2014
I have used Vital , Easygraft and EthOss ( new ) and never add blood there will be ample when you suture up as the Vital and Ethoss have a Caso4 element which needs to set prior to closure . Depends where you are based to availability of materials Regards Peter
Richard Hughes, DDS, FAAI
11/15/2014
Bob, Well said!
peter Fairbairn
11/23/2014
By the way well done Richard , on the award. Regards Peter
Don Rothenberg
11/18/2014
For about a year we have been using PRF with autogenous bone taken from the patients 3rd molar area...the bone growth in the sinus cavity has been dramatic to say the least. I know a lot of folks (doctors) will not like the second surgical site...but my patients don't seem to mind at all...when it is explained to them honestly and correctly.
Tuss
11/19/2014
I use fully synthetic calcium triphosphate gratf material (Vital) and no issuse - complete bone conversion and no islands of xenograft floating around
Alberto Miselli
11/23/2014
I want to make a reflection: when one extracts a tooth, which happens in the alveoli? It is filled with blood and occurs a clot that it starts the entire process of new bone. This must also happen when placed an implant within the breast, forms a clot and the implant makes a tent that keeps Snaider membrane and is organized a clot.
Richard Hughes, DDS, FAAI
11/24/2014
Peter, Thank you. It means a lot coming from you. It still sinking in. The AAID a is a wonderful organization. You keep up the good work!
Yaron Miller
11/26/2014
Hi all Where can I buy this material in the USA. I have searched everywhere. Is bone bond from MIS the same product? Thanks
peter Fairbairn
11/27/2014
Sadly, not unless in the Orthopedic area ( Genex ) , the US market is not really interested in the synthetic route as much as Europe is at the moment but I feel this will change soon . You do have a very good Synthetic material company run by the very knowledgable Greg Steiner ( Steiner Laboratories , Hawaii ) a poster on this site , google it. Yes Bond Bone ( MIS) and Dentogen are very CaSo4s but you need to mix them with other materials to optimise results . Regards Peter
andrew
11/27/2014
I have used MIS BONDBONE too, and as Peter said, it is not as good as they claim it to be. Resorbs faster than the 3 months they claim. Maybe mix with a pure bTCP in a 50:50 ratio so it will not resorb has fast? Peter may be able to advise on the mix ratio better
Sam
11/27/2014
Below is some information that I hope everyone will find useful about synthetic bone grafts in the US market. This is not meant to be an exhaustive discussion of these materials, but simply a basic intro. Basically, there are a handful of types of synthetic grafts available: Calcium Sulfate, Carbonate Apatite derived from animal bone, and Synthetic Calcium Phosphate materials (e.g., β-tricalcium phosphate, (β-TCP), and hydroxyapatite). Calcium Sulfate for dental use is available in the US under the brand name Dentogen. Dentogen has been around for many years, and has been the subject of numerous positive studies. Most clinicians in the US will mix DentoGen with allograft (e.g. mineralized cortical-cancellous bone particles), especially when used for larger defects, or even with another slower resorbing synthetic. BondBone is also Calcium Sulfate, so it's basically the same as Dentogen. The only difference, as far as I can tell is the delivery mechanism, i.e. BondBone is sold as a syringe. A positive for Dentogen, is that it comes with a fast-set solution (4% potassium sulfate) that helps form a putty in an accelerated fashion. There is also a new generation of DentoGen, called NanoGen, which is smaller particle size and has an advantage of being sustained release with a slower rate of resorption as compared to the original medical grade calcium sulfate. If you are interested in DentoGen and Calcium Sulfate in general, you can read more about it at DDSGadget.com. Under the DentoGen product you can see a list of research papers on Calcium Sulfate, as well as some case studies. If you run a search on OsseoNews.com, you can also find alot of discussions on synthetic grafts. DDSGadget.com also carries another synthetic bone graft from Collagen Matrix, called, SynOss, which is a synthetic calcium phosphate composite. There is a putty version of SynOss which is calcium phosphate plus Type I collagen. On the product page there are two case studies you can see for SynOss. In the US, β—tricalcium phosphate (β-TCP), is sold under the brand name, CeraSorb. It is sold by a company called Curasan/Riemser. There are numerous other synthetic bone grafts available in the US. Some clinicians like Bio-Oss. Bio-Oss is porous anorganic bone mineral with carbonate apatite derived from bovine bone. Bio-Oss is sold by Geistlich. Collagen Matrix recently introduced a new product called MatrixOss, which is a porous anorganic bone mineral with carbonate apatite derived from porcine cancellous bone (re: Bio-Oss is bovine and MatrixOss is porcine). In general, the comparison of different synthetic bone grafting materials for dentistry is based on the relative resorption time of the materials, with some materials having a much higher resorption rate than others (e.g. calcium sulfate, resorbs more quickly than other synthetic grafts). Obviously, the resorption rate will dictate the clinical application of different synthetic materials, as well as which materials may be used in combination with the synthetic graft to provide ideal results (e.g. mixing with allograft or another synthetic graft, like DentoGen + β-TCP). Another important requirement for synthetic bone grafts is related to the pore structure of the material. Some research indicates that highly porous material provides a higher degree of osteo-conductivity. Finally, there are issues related to the surface morphology of the synthetic material on a microscopic level, as surface morphology can help facilitate cell adhesion and migration. There are numerous studies on PubMed related to the three factors mentioned above, and of course, there are many other aspects to synthetic bone grafts that I have not covered here due to space/time constraints. A quick search on PubMed will provide an abundance of research articles for further study. Hope this is all helpful.
CRS
12/2/2014
I have tried the synthetics over the years but I get the best results in my hands with cortical- cancellous human bone. I just prefer the feel I get in the newly regenerated bone when I place the implant. Just my personal preference.
Peter Fairbairn
12/3/2014
HI CRS , I used to use Allografts for many years , but the new synthetics and concepts are a game changer in ease of use , consistent predictable results and patients love them as well .... no donor stuff . Cores also show over 50 % new woven bone at 10 weeks ! , we are slowly getting to understand more about what we can achieve . Regards Peter

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