Comprehensive Dental Information about Dental Infections, and all Dental Procedures.

We cover everything including dental infections, extractions, replacing, restoring teeth, and teeth whitening.

Get explanations of all dental procedures, the pros/cons, and when they are needed.  We discuss options and alternatives, to help you make an informed decision and feel comfortable with the procedures you are having done.  

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Dental Updates:


We have a guest posting, from Mary Alusin on, "The Need for Dental Crowns."  Thank you for your submission, and hopefully everyone will enjoy her informative article!

The Need For Dental Crowns:  

When Should You Undergo A Dental Crown Procedure?  

There are many reasons you may need to get a dental crown.  Dental crowns are not merely the last ditch of efforts to save a tooth anymore.  They have many uses, but we only get to know them we are either faced with the knowledge of the situation or learn about it from our dentist.  Basically, a dental crown also referred to as a dental "cap", covers the tooth on top and on both sides to give it a durable protection.  Although the cost is around $500 to $2,500, depending on the situation, the price is truly worth it.  A dental crown works to strengthen a tooth and protects it in many different ways.  Once the crown is in place, you can eat normally without any fear of harming your tooth.  But when should you get a dental crown?  Here are situations that you may want to know.  

After a Root Canal:

A root canal will hollow out your tooth and leave it exposed to cracking if not protected.  A dental crown almost always follows a root canal in order to protect the tooth and prevent any type of fracturing.

Cavity the Width of the Tooth/ Loose Fillings:

When a tooth develops a cavity that is the size of the width of the tooth or larger, it will need to be covered with a dental crown.  Without the crown, the remaining parts of the tooth become weak and are prone to fractures. Fillings, which have been in the mouth for awhile, will also need to be replaced with crowns since they tend to be fragile already.  

Dental Implants:

Many people are not happy with the appearance of their teeth.  In these times, there may be a problem with color and shape of the teeth, or there might be big spaces in between them.  Your teeth can be made to look natural with crowns/facings, called dental veneers.  It is a good way to enhance the way the front teeth look and many times they can be applied without having to shave teeth down or prepare them in any way.  

Grinding and Excessive Wear of Teeth:

If you have a problem grinding your teeth, they will become shorter over time.  Acid erosion,which is usually caused by gastrointestinal acid reflux, bulimia, and a heavy acidic diet deteriorates your teeth.  If this happens, the only way to restore your teeth is to increase your bite and cover your them with a dental crown.  

Broken Teeth/Missing Teeth:

If your tooth gets broken due to some type of trauma, a crown can replace what you have lost.  Cusps, the most stressed part of our teeth during chewing, can frequently break down the teeth due to large existing fillings. As such, they will need to be completely covered to keep your tooth from continually breaking down.  In some cases, when a tooth can break all the way down to its roots, a crown lengthening procedure must be done.  This simply means that the bone and gums need to be trimmed below the edge of the fracture so that a crown can be placed on the remaining healthy tooth structure.  They can also be placed over dental implants to fill the spaces that were left from missing teeth.

Cracked Tooth Syndrome:

Sometimes, you may feel an excruciating pain while chewing your food. This condition is usually caused by a fracture within the tooth.  To alleviate the discomforts, a dental crown will hold the tooth in place, eliminating the pain away.  Dental crowns have many uses and are far more cost-effective than you might think.   But of course, before undergoing such procedure, it is best to talk with your dentist about your options and see what is the right choice for you.

Thank you Mary!

Denture Locator Abutments:

Below is a picture of a patient who had 3 implants and gold locator abutments attached.  The denture is made to attach/snap onto the 3 locators, to help keep the denture in place.  This will allow the denture to have most of the palate removed, to allow better speaking/phonetics and increased comfort.

Implant Placement:

Among other anatomical concerns, sufficient room is needed between roots to place implants.  This person is missing both lateral incisors (#7, 10), and the left photo shows a good amount of space between the roots for an implant, but the right photo needs to have the roots orthodontically spread apart to make room for an implant.  

dental implant, missing lateral incisor

Vertical Root Fracture:

Below is a textbook example of a tooth with a vertical root fracture, meaning that the root of the tooth literally split in half along the length of the tooth.  This condition is untreatable and the tooth needs to be removed.  The patient had an abscess/infection around the roots of a previously root canaled tooth, and the thin, pointed instrument going into the gums is a periodontal probe which checks for bone loss.  In a vertical root fracture, it will typically drop very deep in one specific area as shown in the video.

This is the tooth from above, that was removed.

vertical root fracture tooth removed

Dental Translation mobile app: Free on iOS and Android, check out the Dental Translation App.

dental translation app

Livionex: There's a new product of dental gel out, called Livionex, which uses advanced chemistry to disrupt the plaque from your teeth, resulting in a cleaner mouth and less gum disease.  For those who have trouble with home care, this may be a viable option to try.

Tooth numbers: Below is a panoramic radiograh, or xray, with the teeth numbered.  When looking at a radiograph, it is always like the person is looking at you.  So #1 is on the upper right, and #16 is the upper left.

panoramic radiograph numbered

Invisalign Clincheck: This video is a sample Invisalign Clincheck.  When Invisalign is being planned, the Invisalign company along with the dentist plans out what the case will look like at the end.  The dentist has the option to make any changes before the aligners/trays are made.  Once the animation/clincheck is approved by the dentist, all of the aligners will be made and sent to the dentist.

Crowning Root Canaled Teeth:

This question comes up a lot.  When someone has a toothache, very often the tooth ends up needing a root canal.  The root canal procedure itself shouldn't hurt and often has minimal discomfort afterwards, but it is often associated with pain because when you are in pain, often times you need a root canal.  The procedure actually gets rid of the pain, it doesn't cause it.

After the root canal is done, normally the pain is gone and the patients think they are good to go.  All back teeth that have had root canals should be crowned.  People always think once the pain is gone, the problem is solved.  That is only part of the solution. (read more) 


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Onlinedmd.net's History:

I am a licensed, full time practicing general dentist with in Honolulu, HI.  I started this website over 12 years ago in 2004... The site is pretty basic , but I do try to keep the information current.

Around the time I started the site, I remember telling myself I don't think I'm going to be a dentist forever.  (read more)