A tooth-shaped cap that is placed over a damaged tooth to restore its size, shape, and color is called a dental crown. A dental crown is used to protect a damaged or decayed tooth, to prevent the tooth from cracking after a root canal treatment, to hold a dental bridge, and to cover a yellowish or discolored tooth.

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Can hemisection be done in a molar with crown and abscess?

Query: Hello doctor, My crown has become loose as there is decay inside the crown and around half the edge but not visible. I was told that the tooth is stable underneath. I saw one endodontist who said to rule out the implant and that he would do a root canal but bone and gum are less than ideal and 50-50...  Read Full »

Dr. Naveen Thomas

Answer: Hello, Welcome to Seeing the recent X-rays (attachment removed to protect patient identity) it is obvious that the distal root has an abscess and should be removed. Hemisection might be a good idea but it alone cannot withstand the biting force and if you can afford it, then go for a mo...  Read Full »

I had 10 crowns placed on my front teeth a week ago. But I am experiencing pain in all of them. Please advise.

Query: Hi doctor, I had 10 crowns placed on my front teeth a week ago. I wake up in the middle of the night with all of my teeth throbbing. It is extremely painful and I have no idea what is going on. I have no sensitivity to cold or hot but just throbbing in my teeth. Please advise.  Read Full »

Dr. Muzaffer Hussain Parray

Answer: Hi, Welcome to I understand your concern. I think the pain must be because of the load on the teeth which are being used as abutments. Because you have a gross occlusal correction and the night clenching (bruxism) may also be the cause of pain. It looks like you do have apical period...  Read Full »

I am a 33-year-old woman, and my lower molar got fractured after having a root canal done. Please help.

Query: Hi doctor, I am a 33-year-old woman with quite healthy teeth in general. I still have all my natural teeth, including wisdom teeth. Last week my lower molar broke down, and I had a root canal done on that tooth four years ago. My dentist prepared it for a new crown last Wednesday but did not fit a ...  Read Full »

Dr. Soheel Hussain Zargar

Answer: Hi, Welcome to I understand your concern. The dentist should have done temporization under such conditions. It is his fault for not doing so. Yes, a crown can supra erupt, creating a problem in the fitting. Two or three weeks is a long time, and a crown can break. I advise you to wait ...  Read Full »

Should every tooth get a post and core and a crown after root canal treatment?

Query: Hello doctor,Should every root canal-treated tooth get a post and core, and crown? What happens if it is not done? The tooth is upper 4 with a class-2 cavity and was restored by composite.  Read Full »

Dr. Honey Nandwani

Answer: Hello, Welcome to No, all teeth are not post and core treated. However, we recommend a crown for all such teeth as the teeth become fragile after a root canal treatment. Post and core is done if there is an extensive loss of the crown of the tooth due to decay or fracture. In your case...  Read Full »

Why do I have a toothache four years after a root canal treatment?

Query: Hello doctor, I am having minor to in some cases moderate toothaches from time to time due to a chipped root canal. I have not had any issues until recently. It has been around four years since I had the root canal done but never went back to get the crown. I have not gone because of dental anxiety....  Read Full »

Dr. Naveen Thomas

Answer: Hello, Welcome to If you have not put a crown until now on the root canal treated tooth, then yes it can get infected and cause pain. The pain will only increase. So, it is better to go back to your dentist, get an X-ray done and get an opinion. If the root apex is again infected, y...  Read Full »

Is it necessary to remove a tooth that is cracked inside the crown?

Query: Hello doctor, When a tooth is cracked inside a crown, is it necessary to remove it? The root canal is from 30 years ago. I got hit two weeks ago which caused trauma to the tooth and I have swollen gums but no bleeding. I took Amoxicillin and Ibuprofen for ten days with a Chloralhexidine Gluconate w...  Read Full »

Dr. Asma Parveen

Answer: Hello, Welcome to In case of a fractured tooth, it is always adviseable to get it extracted especially in cases of a tooth with a crown. I would like to know whether you are having pain now and when did you come to know about the fracture?   Read Full »

Can replacing my protruding crown in the front tooth weaken it?

Query: Hi doctor,I have six upper teeth on the left side. My dentist gave me a partial denture. I have four implants on my lower jaw to support the lower denture. Before three weeks, my dentist made a crown for the front tooth due to dental caries. The dental assistant said that the crown appeared long. Wh...  Read Full »

Dr. Achanta Krishna Swaroop

Answer: Hi,Welcome to am an implant specialist. Your dentist could have shaped the tooth for proper alignment according to the central and lateral incisors. You might have dentinal hypersensitivity due to the trimming of natural teeth. Excess trimming can lead to fracture, chipping, or crackin...  Read Full »

Is it normal for a Maryland bridge to move in different directions?

Query: Hello¬†doctor, I am 19 years old. Can a Maryland bridge or any bridge move up, down, right or left?  Read Full »

Dr. Muzaffer Hussain Parray

Answer: Hello, Welcome to As per your question, what I can understand is that you are asking if a bridge can move during the act of talking or chewing. If that is what you meant, then the answer is no, because the bridge is cemented to the adjacent teeth firmly. It will never move but in case i...  Read Full »

Is resizing of retainer necessary after getting a new crown?

Query: Hello doctor,I am a former patient of braces. I have gotten a crown on one of my teeth after braces, and I am not sure if I need to get a new retainer, get a resizing to fit my crown and my other teeth, or neither. To be honest, I have not been the best with my retainers, but I am not sure if that w...  Read Full »

Dr. Mayank Khandelwal

Answer: Hi, Wecome to Retainers are an essential part of orthodontic treatment as they keep all the corrections achieved during the orthodontic treatment intact till bones and surrounding tissues mature. In general, it takes approximately one year for this process to complete since the end of...  Read Full »

When I went to fit the new crown, the dentist cut part of my retainer. Should I be concerned?

Query: Hello doctor,I got a root canal on my #32, and when I went to fit the new crown, my dentist cut part of my clear plastic bottom retainer. It does not bother me when I wear them, but I am concerned that now my back tooth is not fully covered. The other side of my bottom last tooth is fully covered by...  Read Full »

Dr. Mayank Khandelwal

Answer: Hello, Welcome to I hope you are doing well. Retainers are a very important part of orthodontic treatment as they keep all the corrections achieved during the orthodontic treatment intact till bones and surrounding tissues mature. In general, it takes approximately one year for this ...  Read Full »

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