Implant Not Correctly Positioned: Recommendations?

Darryl, a dental implant patient, asks:
I am looking for answers concerning an implant that seems to be incorrectly positioned.

My situation: I have an Osseotite 3i dental implant located back of #8 directly over my lower incisor which interferes with my tongue and speaking. I have often bit my tongue on this. When the Oral Surgeon (now retired) placed it in 1997-98, he said I would get used to it. But after ten years I still have not gotten used to it.

As has been explained to me, the position of this implant creates leverage on the abutment from the extended crown. The cement quickly cracks and the crown becomes loose because the abutment is very short (angled from 1 to 2mm). It stays loose for about one or two years before falling off.

My general dentist says it is not correctly positioned and my new oral surgeon agrees it is not correctly positioned and recommends a screw-on crown because of the required short abutment. My concern is that the leverage will simply strip the screw or break the implant. I am inclined to have the implant removed and start over. What do you recommend?

12 Comments on Implant Not Correctly Positioned: Recommendations?

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Dr.Serge
10/6/2008
Either a screw retained crown and hopefully that will fix the bad position of the crown so that the tongue and speach won't be affected or remove the implant, graft the site and put another implant in the good position and direction... Good Luck
Doctor Berg
10/7/2008
get the implant removed and replaced in the correct position, and forget all your problems. The palatal positioning is a clssic rookie mistake, instead of grafting and getting the implant in the desired position they just go where the bone is.... best of luck
Dr. Kimsey
10/7/2008
Removal of an implant and rebuilding the site takes time and money and is not a sure thing. I would strongly consider a screw retained pfm crown that way the lingual part may be made extremely thin and would give your tongue more room.
Dr John A Murray
10/7/2008
Dr Berg simplifies matters. Placing an implant palatally can be an expert's choice and if used in conjunction with a screw-retained crown, avoids the need to graft in many cases. All other things being equal, the screw-retained crown will increase tongue-space and resolve the de-bonding issue. The thread will not strip. Good luck
JW
10/7/2008
If your restorative doctor and your surgeon is recommending that you should try a screw retained restoration, you definitely should. They have watched your case and have all the materials there for a proper evaluation. It is a tad reckless to get a treatment recommendation from a blog space. There are so many parameters to your particular situation that NO ONE can give you competent advice give the information. DO NOT MAKE TREATMENT DECISIONS BASED ON WHAT YOU READ HERE. If you are concerned about the outcome and don't trust the opinion of your providers, you need to get a real life second opinion. Go see someone in the area, or out of the area and see what they say.
Empirical Medicine
10/7/2008
Please, listen to JW. Nobody can answer your question with the information you provided.
Dr.Amit Narang
10/8/2008
i really appreciate the comments from JW... there's no point getting confused from various different views on the blog, keep in mind these views are fro surgeons who have never seen your case and also will probably never do so, taking a second opinion is not harmful but on the blog is not a very good idea i suppose. GOOD LUCK !
Chan Joon Yee
10/10/2008
All anterior screw-retained restorations need a screw access on the lingual or palatal side. You can't have it on the labial side as that will ruin the aesthetics. Hence, if a screw-retained restoration is planned (and there are many advantages of doing a screw-retained restoration), the implant is deliberately placed palatally even if there's adequate bone on the labial side. It's not necessarily a rookie mistake.
Dr. Gerald Rudick
10/14/2008
It is well established from what you say, that the implant is not in its ideal relationship with the adjacent teeth..... we have no information on the size of the implant, if there is some vertical bone loss making it more accessable to work on, etc. Assuming you want to change the implant, then for sure the implant must be removed, a graft done, healing time alotted, new implant, more healing time,more expense etc. Is there a guarantee that the graft and new implant will work....NO!!! If I am not mistaken, a 3I implant of that generation had to be an external hex type..... which would lead me to believe that tremendous torque would be put on the screw,(should you change to a screw-on crown)) and it would cause the screw to fracture and make it difficult to remove the fractured portion... so the screw-on situation may not work out satisfactory. If the implant is of a wider diameter, and your dentist has the skills of a machinist and the determination of a pit bull, then he could potentially drill into the implant creating a post hole suitable for a cast one piece crown and post from a resin plastic pattern. The cast metal post would be tried in the mouth to verify the fit, adequate occlusal space,etc; and then porcelain can be baked on to the coronal portion of the cast unit. The finished crown would be cemented with a resin cement which could withstand occlusal forces. In the earlier days of implantology ( the 80's), angled abutments were not available, and we used to use this method for the original Corevent Implants.... which were of course internal hexed. The real problem here is the external hex....... it would be an effort, but a determined restorative dentist with very sharp burs and fresh diamonds, copious water spray in addition to the high speed handpiece water spray ....... could accomplish this. In this case, it is worth the gamble, as all the experts above have condemned your implant that has been solidly intergrated for 10 years.The implant itself is working out well ..... you have nothing to lose.....find the pit bull and go for it. Dr. Gerald Rudick Montreal
R. Hughes
10/16/2008
Dr. Niznick is correct.
MD Hume
10/28/2008
Has your bite been checked by someone who really understands occlusion? You may have an occlusal prematurity or it may not couple or have a grinding parafunctional habit that is causing your issue. "If the bite ain't right nothings tight" If the implant is sturdy adjust the bite and consider a splint.
deanna rhinesmith
11/17/2008
I have 2 implants in my front lower jaw where I am missing 4 teeth. I am also missing my back molars. My dentist made me a partial that has a bar attached to my implants. The partial contains a housing but no clip etc as my upper denture loacator attachment do. This lower partial is uncomfortable and pops loose when I eat etc.He tells me I need to get used to it, I tell him it doesn't fit as well as my old partial(without the implants) did. What type of retenion is considered acceptable? After all the money and surgery it seems crazy to have the bar removed and just go back to a partial that doesn't use my implants.

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