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Channel: Comments on: Dental Gingival Retraction Cord: What It Is and Why We Use It
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By: Hannah

May 6, 2011, 3:55 pm
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This is really interesting - I had never even heard of a dental retraction cord before. I have a few questions:

1. Is it just a simple cord coated with (something), or is it made out of something special?
2. Is it typically left in place only for the time it takes to make an impression or fill a tooth and then removed immediately after?
3. Is this technique something that nearly all dentists use as a routine, or is it just personal preference whether a dentist wants to use it or not?

Thanks for such an informative article!

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By: Tom

May 9, 2011, 9:47 am
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Hi Hannah - You've got a very informative dental site - good job!

As for your questions:

1 - it is simply a cloth piece of cord. The brand that is pictured above is made out of 100% cotton. Many times dentists will coat it with a substance that causes bleeding to stop so that everything stays nice and clean around the tooth.
2 - It is normally left in place only during tooth preparation/impression taking and then immediately removed. As Austin's email showed, it can be slightly painful if left in for more time than that!
3 - For taking impressions of crown preps I think most, if not all dentists use it. When it comes to cutting a tooth for a crown and deep fillings, sometimes it just depends on the dentist's preference. If I'm doing a filling that goes below the gum-line, I will definitely use cord so that the patient's gums don't get cut and so that I can see what I'm doing better.

I hope that helps. Thanks for your comment, Hannah!

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By: Hannah

May 12, 2011, 10:59 am
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By: Glad

July 3, 2011, 11:29 pm
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Hi Tom,
I just what to know what might be the cause of the numbness of my patient on left side of his face and lips wherein I just put Gingi- Pak on Distal of 36 and done restoration of Cl II DO cavity?

Thank you
Dr. Glad

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By: Tom

July 6, 2011, 11:48 am
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Hi Glad -

The only thing that comes to mind right now is prolonged paresthesia that can occur with an inferior alveolar nerve block.

I hope that helps, Glad. Let me know if you have any other questions. Thanks for your comment!

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By: Crystal

September 10, 2011, 9:58 pm
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Thank goodness I found this page! I had temporary caps put on my front teeth a few days ago and my gums are so swollen and irritated now. Instead of the pain lessening every day, it's actually getting a little more painful every day. Tonight, while brushing my teeth I noticed something that looks like dark string at the gum line and coming down between the teeth. I guess they forgot to remove the cord. By the time the dentist's office is open again I will have had the cord on for 5 days! Am I at risk for infection? Should I call the dentist's emergency number or will I be ok waiting until Monday morning?

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By: Tom

September 13, 2011, 10:45 am
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Hi Crystal - Hopefully they got them removed. If you can see the string, you could probably pull it out yourself without a problem unless it feels like it's really stuck in there. I don't think there should be a problem with infection - the inflammation seems to occur because of the irritation from the cord, not bacteria.

Let us know how it went - Thanks for your comment!

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By: Mike Miloserdoff

September 28, 2011, 12:21 am
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Hi Tom:

I got my question answered by your posting ! Today I sat in a dentist's chair for two hours start-to-finish for a molar crown prep.

The only thing that brought tears to my eyes was during the cord packing, which the dentist said that some people want more numbing during the packing. I managed to get through it with the primary numbing dose and no more.

I have had packing cord used in my mouth before, and today after my visit, I concluded that it was probably for getting a better impression of the tooth, without the gumline getting in the way of the impressed image. I was pretty correct, but now I know better why and when it is used...

After feeling "rattled around" for two hours, high speed burr, low speed burr, numbing needles, synthetic buildup compounds, impressiion mold compound, distasteful packing solution going into my throat a little, etc. I had a good dinner chewing on the other side of my mouth, and a nice walk, boy, do I feel better now that my nerves are back in order !

ALSO, YOUR OPINION, if a porclein over gold molar crown is only $200 more than a porclein over non-precious metal molar crown, in today's precious metals market, is the porclein over gold molar crown a better value, even though it is $200 more ?? How much gold is in a porclein over gold molar crown ?? I always get porclein over non-precious metal, because the porclein surface usually gets more worn out before anything ever happens to the base metal. If the gold content is high, maybe the porclein over gold molar crown can be better looked upon more as an investment, and sold in the future (asset liquidation) if need be ??

Thanks for your website. Is is very informative, and I am going to bookmark it for future reference.

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By: Rakesh

March 22, 2012, 11:14 am
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hi tom,
it's me mr.rakesh.i want to know that ,Is the gingival retraction cord used before or after tooth cutting.
thankes

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By: Brenda

July 29, 2012, 1:34 am
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Good evening. I have a temp crown on #11, waiting three weeks for the permenant and I distinctly remember the technician packing a cord when she put the temporary on for the last time. I thought maybe to keep a space for the permenant. This cord is white and is starting to come out.

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By: Danna

August 3, 2012, 7:47 am
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Its friday morning and all 8 of my front teeth are out. They DID have TEMPS for CROWNS on, but
they all fell off the first day, which was Wednesday of this week.

Im afraid I went to a new, young, experimental dentist and I've learned my lesson. Plus I don't think you were around at the time of my initial serarch for a dentist.

Are you open after lunch this afternon? Thought I could run in and have you reglue them in, butI may just have the problem til the permanents come in>

Please call as soon as you can get my information.

escape key, and another pain cemterc

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By: Tom

August 3, 2012, 1:08 pm
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Hi Danna - I would get in touch with your current dentist, they should be available for emergencies. The temporaries help hold the teeth in place so that the permanent crowns will fit well. Hopefully they can fit you in ASAP. Good luck!

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By: Tami

August 12, 2012, 7:44 pm
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Is there some string or cord under a permanent crwn? If so, what if its coming out?

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By: Michelle

October 4, 2012, 10:36 pm
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hey there, iam a dental assistant and I am glad to find this page. I want to know if you can show a video or give some tips of how to remove the cords when it's time to do the last impression. I've been having a hard time getting a good grip on those cords because they have to be taken out fast. so if you have anything that can help that would be great !!

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By: Mary Spiro

October 7, 2012, 7:23 pm
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Hi, this post was very helpful! I think the dentist has left a portion of dental retraction cord in my gums and he will be getting a call from me in the morning. This was my second crown build up, and unlike the first time, the gum pain has not gone away. Definitely feels like something is shoved down in there were it should not be.

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By: Tom

October 8, 2012, 6:45 am
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Glad it helped, Mary. Good luck with everything!

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By: George

February 28, 2013, 7:14 pm
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Hi Tom.

In all the years and all of the crowns I have had put in, I never came across this retraction cord. Today however, I have a couple of questions for you about this Dental Gingival Retraction Cord. How long has it been around? Anyway, I recently had a root canal done on a molar through an existing crown. There was also decay remaining that necessitated ultimately removing and replacing the crown as well.

In the process, I had an upper crown replaced opposite the aforementioned one and to get a better mold for a new crown a couple layers of cord was inserted under the gum line. It went smooth.

Back on the lower tooth the decay was drilled and it apparently extended below the gum line at which point the dentist indicated that the gum needed to be trimmed back in order to be able to complete the work.

My question is, if the cord worked well enough to get around the gum line on the upper tooth for a mold, then why wouldn't it be suitable to provide space to drill out the decay below the gum line? That is one of the stated purposes for using the cord isn't it? This trimming is on a gum line that is already receding, and besides that it is fairly costly to boot. I believe this is for something called crown lengthening to conceal the exposed root due to a receded gum line.

I'll leave it to you from here Tom. Thanks kindly for your input.

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By: Tom

March 9, 2013, 6:50 am
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Hi George - I'm not an expert on the history, but I would think that it's been around for several decades. Some dentists don't use it, and if the crown is going to be above the gums, it probably isn't necessary. Sometimes the crown will go far enough below the gums that it is necessary to remove gum tissue and even some of the bone underneath to ensure that the crown fits properly and doesn't cause any inflammation in the gums after it is cemented onto the remaining tooth structure. For example, let's say you have a cavity that goes down below the gum-line on a tooth. In order to get a crown onto the tooth, the dentist will have to remove the cavity, and exend the edge of the crown below that point in order for the crown to be able to grip onto solid tooth structure. If there's not enough room to do that, the dentist will do a "crown lengthening procedure" which lengthens the crown of the tooth (the part of the tooth above bone) by removing some of the bone that supports the tooth. I hope that helps. Thanks for your comment, George!
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By: rachael

April 13, 2013, 2:50 pm
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Lately I have had far too much experience with the retraction cord! It's a long story, but I had a root canal in January and after having two ill-fitting crowns arrive from the lab and we are hoping that the third impression will be perfect. We just might get this stubborn tooth capped in May! During the lengthy process of having many molds taken of this one tooth, my dentist has been very hesitant to give any kind of numbing agent to dull the pain.

I am curious. Do most dentists numb patients during the packing of the retraction cord? My dentist has even used a lazar at one point and the pain was INTENSE. Not to mention the smell. I understand that the tooth root is dead because of the root canal, but my gums are killing me. Should she at least be numbing the area during the procedure? Or am I a wimp?

Thanks!

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By: Tom

April 13, 2013, 6:03 pm
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Hi Rachael - I believe most dentists do numb when packing retraction cord as it can cause pain in the gums. Normally the patient is numb when I'm doing retraction cord, but if they aren't, I will ask them if they would like to be numb. We'll usually do whatever makes you more comfortable. If you are uncomfortable, speak up and let your dentist know. Good luck with your crown - that is a good sign that your dentist wants to take the time to make sure that it fits correctly.
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