Food Grade Thread Lock

When you get a crown, the dentist glues the crown on.

https://www.colgate.com/en-us/oral-health/cosmetic-dentistry/bridges-and-crowns/whats-in-dental-glue-for-crowns-0515

That is a different situation, in which the mating surfaces of crown and remaining tooth are much larger than with an implant.

The problem may not be the screw. There may also be a reason why your dentist is not using a dental work rated bonding agent for this implant. Get another opinion from another dentist or periodontist. You cannot see inside your mouth what is or is not happening.

This. This. 1000x this. Get a second opinion.

Also, CR4 has careful regarding medical advice. An adhesive recommendation per the specs is fine. Instructions (or requests) on how to execute this repair will be removed. Typical IANAL/IANAD stuff...

I almost had to laugh at this. I AM asking for a second opinion, and I thought it would be appropriate to ask an engineer. Dentists go to dental school to learn about dental anatomy and disease, not about screw threads and alloy properties, so I thought to ask if someone knew about dealing with screws in strange places coming loose.

My dentist is not the one who put the implant in (the latter has retired), and he has already consulted with his colleagues about tightening the screw with a torque wrench.

You should be mkre specific, and as for a materials engineer or chemist.

That is true. My initial aim was to stir an interest in what I see as a routine engineer's problem in an unusual location. If it is too difficult for you then you are welcome to say so.

Well from an engineering perspective only and because I also have some experience through my sister's multiple dental implants let me add this perspective.

The threads that loosen after several years are between the fixture and the abutment. The binding between the fixture and your jawbone should be stronger than the binding between the abutment and the fixture. If it is not then your jawbone may require oral surgery every time the fixture breaks free of your jawbone. It is your jawbone and it is your money. But I think the weak point in this implant is exactly where it should be.

Thank you. I fully agree with what you say, and am pleased to report that the fixture and jawbone are happily bonded together. It is only a matter of the loose screw.

There is a neat explanation of the structure of a dental implant here. I would be grateful if you could suggest an alternative explanation for a loosened screw.

Abraham Lincoln said - “He who represents himself has a fool for a client”

I think the same would hold true in your case.

There may be a more permanent solution, aside from "glue."

Consult with your dentist.

So, you are asking a bunch of anonymous wish crackers on the internet what you should do about the loose screw in your head?

If possible try to find the true manufacturer of the dental implant hardware. Explain your problem to them. They stand to be the most embara$$ed by the problem with what they $ell and are mo$t motivated to help you and re$tore their good reputation.

Is a "wish cracker" anything like a fortune cookie?

Hi Lyn,

A " wish cracker ", is a new years party popper.

Usually two people pop it. On person holds one end and the other person holds the other end. When it pops, the quicker person gets to grab the prize that pops out.

These are also known as Christmas crackers.

Since Christmas is on its way, I will be expecting one. Hint, hint,,

I laugh at how respectful everyone is being here of the professional opinions of dentists. As a professional engineer with some 33 years under my belt, I have say that we are seldom if ever accorded such deference.

However, you only have one jawbone so I suggest that you don't mess about; if you are unhappy with your implant, get a second opinion.

I don't know why you are telling him to get a second opinion. During my last physical I asked my doctor why I was having so much pain in my foot. He said it was because I was getting old. I told him I didn't like what he was saying and I wanted a second opinion. He told me I was also getting fat. Second opinions aren't very good.

.... the doctor said i was getting old,... so i asked for a second opinion,... the doctor than said “sure... you're bald too...”

..."To maintain the abutment screw tightly in its correct position, the authors developed a technique in which an elongated hexagonal titanium bar is inserted into the hexed fixed screw head. The screw is locked, and the bar is then fixed with a light-cured composite resin material that serves to seal the retaining screw access hole. The occlusal hexagonal bar thus serves as a secure screw lock that can be easily removed if needed."...

https://www.ncbi.nlm.nih.gov/pubmed/10332132

I think this is one of those problems that you need to rely on the dentist to solve....

I have the same issue... the problem is, it can be the design of the implant thread. there are a number of implants that they don't make anymore, for one reason or another, i unfortunately have one. it took him quite a bit of time to find the thread.

fortunately my dentist has kept to the gaurantee. ine time he did use a higher grade of cement, i never had a problem with it since.

i stay with the same dentist, because if you go to another dentist, then the garantee is off.

I know anout a week before when its about to come loose (noticably loose), usualy it’ll pinch my gum.

The other issue, you may have problems grinding your teeth, thats stressing the bond of the cement.

I had a similar although only one off issue ~8 years ago, some months after my implant was fitted. I'm not 100% sure (due to the time that has passed) but I think the first job may have had the nut (on an implanted stud i.e. not a screw) exposed, whereas the rework had a counterbore where the nut sits filled with "dental cement" so it couldn't undo. I also wondered if the loosening could have been caused by foreign material being trapped in the assembly and breaking up after use/time.

To digress slightly, I remember the whole process was very interesting from an engineer's perspective. Installing a stud in one's jaw, not dissimilar to one in concrete; asking the dentist if his dinky torque wrench was calibrated (when looking for a loosening cause) - something I used to do that he'd never come across. When wet media blasting was new-tech in dentistry it wasn't in engineering. The list goes on.

Good luck

LOCTITE has several "medical" application adhesives. If any are suitable I cannot say. I will let you do the research but don't hold out much hope.

I heard they use super glue instead of stItches..

Yes, they do, but that is not relevant to the current issue.

About as relevant as using a food grade thread lock as dental cement.

May I refer you to the description of the dental implant process in post #20? There are no components to be cemented together.

You have to realize that how you brought it up, you initiated a brainstorming discussion.

i related my simular experience where the implant would lossen, the dentest tightened it and capped it with cevent. it work slightly long per then usually, but it still came loose.

let me reiterate from post #7 It may be the thread type on the implant.he only used the cement to cap it off, in an attempt to keep it from loosening,... to no avail.

Have you considered medical superglue which is used instead of sutures to seal incisions?