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Tooth jewellery - Tooth gem.
Tooth jewellery (tooth gem) is a jewel-like accessory placed on the teeth to add a sparkle to your smile. How long does tooth jewellery...

Dr Changjie Guo
Oct 11, 2020


Wisdom tooth extraction.
Wisdom teeth, commonly called “third molars,” grow at the back of your gums and are the last teeth to come through. T hey’re called...

Dr Changjie Guo
Sep 21, 2020


Myofunctional orthodontic treatment - straighten teeth without braces.
Myofunctional orthodontic treatment addresses the underlying causes of crooked teeth, such as poor oral habits (for example,...

Dr Changjie Guo
Aug 15, 2020


Epidermoid cyst in cheek.
Epidermoid cysts are small lumps that develop under the skin or mucosa. They are benign subcutaneous lesions and often found on the...

Dr Changjie Guo
Jul 24, 2020


A different approach to root canal treatment.
Root canal treatment is the only way to save the tooth when the nerve gets infected inside the root canal. For front teeth, root canals...

Dr Changjie Guo
Jul 4, 2020


Crooked teeth fixed by braces
Orthodontic treatment is still the most conservative and effective way to fix crooked teeth, even though veneers can be an option as a...

Dr Changjie Guo
Jun 14, 2020


How complicated is root canal system?
We all know root canal treatment is a lengthy and not cheap procedure, but shouldn't be a painful procedure. Root canals can be narrow...

Dr Changjie Guo
May 10, 2020


The bridge has fallen.
Dental bridges are one of three options to replace missing teeth along with dental implants and dentures . Compared with dental...

Dr Changjie Guo
Mar 18, 2020


Loose space - regain space - maintain space.
Premature exfoliation or extraction of baby tooth can lead to space loss when adjacent tooth moves forwards. As a result of space loss,...

Dr Changjie Guo
Mar 3, 2020


Fix the crooked teeth and close the gaps.
This teenage presented with gaps between teeth and rotation of some front teeth. The best treatment option would be orthodontic treatment with braces. After less than a year treatment, the crooked teeth fixed and the gaps closed. Everyone's happy with the final result. #orthodontics

Dr Changjie Guo
Feb 1, 2020


Treatment of calcified root canals.
Calcified root canals happen when calcium gets deposited in the root canals and the canal space shrinks. This can pose a challenge if a tooth needs a root canal therapy because it can be difficult to get even the smallest of tools down them. The cause for calcification may vary, prolonged infection and trauma, the natural process of ageing, fillings or crowns over a long period of time are the common reasons for it. The incidence of calcified canals is highly correlated wi

Dr Changjie Guo
Jan 5, 2020


How to fix a posterior unilateral crossbite?
In a normal bite, the upper teeth sit a little outside the lower teeth at the front and back and on both sides of the mouth. If a few top teeth are growing slightly behind their lower teeth, we call this a crossbite. There are two main types: 1. Anterior crossbite when front upper teeth are sitting behind their lower ones. 2. Posterior crossbite when the back upper teeth are sitting inside the lower teeth. This crossbite may be on both sides (bilateral) or only one side (unil

Dr Changjie Guo
Dec 21, 2019


How deep is the crack?
A cracked tooth can result from chewing on hard foods, grinding your teeth at night, injury and can even occur naturally as you age. The most common cause seen clinically is fillings so large they weaken the integrity of the tooth. Teeth can crack in several different ways: Craze lines. These are tiny cracks that affect only the outer enamel of the tooth. They are common in all adult teeth and cause no pain. Craze lines need no treatment. Fractured cusp. This kind of crack

Dr Changjie Guo
Dec 15, 2019



Dr Changjie Guo
Dec 13, 2019


From black to white - replace amalgam filling.
Amalgam has been used filling as dental material for cavities for the past 150 years. It's also called silver filling, mercury filling and black filling. Even though it doesn't look nice cosmetically, scientific researches show that it's safe as dental material. It only needs to be replaced when it has defects, cracks, or decays. In this case, the amalgam was replace by the white filling (composite resin) because it had secondary dental caries. #Fillings

Dr Changjie Guo
Dec 3, 2019


2 implants to replace 2 missing lower molars
One tooth had been removed already. The other had failed root canal treatment . After discussion the options of extraction and root canal re-treatment , extraction was chosen. Among the options ( denture , bridges and implants) to replace missing teeth, implants as the best option was picked. A standard size implant was placed at the site with already missing tooth. A wide size implant was placed at the site of failed root canal treated tooth because more bone was availa

Dr Changjie Guo
Nov 11, 2019


Fissure sealants and enamel hypoplasia.
Enamel is the hard, protective outer layer of teeth. Enamel hypoplasia is a defect of the enamel that occurs while teeth are developing. The causes can be hereditary and/or environmental. Both baby teeth and permanent teeth can be affected. The visual signs of enamel hypoplasia include white spots, pits, grooves, fissures and yellowish-brown stains. The condition of teeth causes sensitivity to heat and cold, retention of harmful bacteria and increased vulnerability to tooth

Dr Changjie Guo
Oct 30, 2019


Immediate dental implant placement and cantilever bridge
What is immediate dental implant placement? Immediate implant placement is when an implant is placed at the same time as the natural tooth is extracted. It was first reported in 1976. It has similar high success rate as traditional delayed implant placement. The main benefits of immediate implant placement are reduced treatment time and number of visits. If immediate loading is possible, tooth extraction , implant and temporary crown can be completed on the same day (same

Dr Changjie Guo
Oct 19, 2019


Orthodontic treatment of impacted teeth.
Impacted teeth means that teeth either has not erupted when expected or cannot erupt because of lack of room, wrong direction or position. Wisdom teeth are most often impacted. The second most common teeth to be impacted are the maxillary canines (upper eyeteeth). If it's not wisdom tooth, orthodontic treatment normally is the treatment option for younger patients. Our case showed orthodontic treatment of impacted teeth. In this case, there were two impacted teeth - one

Dr Changjie Guo
Oct 9, 2019


At-home teeth whitening
Teeth whitening is the most conservative way to have whiter teeth compared to veneers and crowns . There are 2 types of teeth whitening system: at-home and in-office. We normally recommend at-home teeth whitening because it has more stable result, less complications and cost much less in long term. The older the teeth are, the harder to be whitened. The picture showed a good teeth whitening result for a 50+ years old patient. #Teethwhitening

Dr Changjie Guo
Sep 27, 2019
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