For many people, third molars, often referred to as “wisdom teeth”, are associated with discomfort, swelling, infections, and eventually the need for extraction. Since these teeth often cause problems later in life, researchers have explored whether there may be ways to prevent wisdom teeth from developing or reduce the likelihood of future complications.
One area of interest has been whether injection of local anesthesia for wisdom teeth during childhood could influence wisdom tooth development. While early research has identified a possible connection between certain dental injections and missing wisdom teeth, more studies are needed before local anesthesia can be considered a reliable method for preventing wisdom teeth from developing.
What is local anesthesia used for in dentistry?
Local anesthesia is a medication commonly used during dental procedures to temporarily anesthetize a specific area of the mouth. It prevents patients from feeling pain while allowing them to remain awake and comfortable during dental treatment.
Dentists use local anesthesia for many procedures, including:
- Dental fillings
- Tooth extractions
- Root canal treatment
- Gum surgery
- Gum disease treatments
- Wisdom teeth extraction
- Dental surgery treatments
For wisdom teeth specifically, local anesthesia is typically used during the extraction process to numb the surrounding tissues and ensure the patient remains comfortable.
Local anesthesia is used in many areas of dentistry, from routine preventive treatments to more complex procedures. Learn more about our comprehensive dental services and the treatments available to help maintain and improve your oral health.
How do wisdom teeth develop?
Wisdom teeth, also called third molars, are the final set of teeth to develop. Most people have four wisdom teeth located in the upper and lower back corners of the mouth.
Unlike many other teeth that begin forming before birth, wisdom teeth start developing later in childhood. The early stages of wisdom tooth formation generally occur between the ages of 2 and 6, with the teeth continuing to develop inside the jaw for many years before they grow.
Wisdom teeth usually begin erupting between the ages of 18 and 25. However, many people experience problems because there is often not enough room in the jaw for these teeth to fully grow.
When wisdom teeth cannot properly grow into the mouth, they may become impacted. Impacted wisdom teeth may grow:
- At an angle toward neighbouring teeth
- Horizontally within the jaw
- Partially through the gums
- Trapped beneath gum tissue or bone
These situations can increase the risk of:
- Tooth decay
- Gum infection
- Pain and swelling
- Damage to neighbouring teeth
- Cysts around the tooth
Reasons for wisdom tooth removal
Not everyone needs their wisdom teeth removed. Some people have enough space for these teeth to develop normally and maintain good oral hygiene.
However, wisdom tooth removal may be recommended when there is a higher risk of future complications. Since wisdom teeth are located at the very back of the mouth, they can be difficult to clean properly, making them more vulnerable to plaque buildup and infection.
A dentist or oral surgeon may recommend wisdom tooth extraction if there are signs of:
- Repeated infections
- Pain or swelling
- Damage to surrounding teeth
- Decay that cannot be restored
- Gum disease around the wisdom tooth
Concerned about your wisdom teeth?
Schedule a consultation with our team to determine the most appropriate treatment plan for your oral health.
Can local anesthesia for wisdom teeth stop them from developing?
Currently, local anesthesia for wisdom teeth is not considered a proven way to prevent wisdom teeth from developing.
A study published in the Journal of the American Dental Association (JADA, April 2013 144(4):389-395) examined whether there was a relationship between childhood dental injections containing local anesthetic and missing lower wisdom teeth later in life.
Researchers from Tufts University School of Dental Medicine observed that children who received local anesthetic injections near the developing lower wisdom tooth area appeared to have a higher likelihood of missing lower wisdom teeth compared with children who did not receive injections in that region.
However, the study identified an association, not a direct cause-and-effect relationship. This means researchers found a possible connection, but could not confirm that local anesthesia injections were responsible for preventing wisdom teeth from forming. Additional research is needed to understand whether local anesthesia directly affects wisdom tooth development or whether other factors may contribute.
Should parents be concerned about dental injections affecting their child’s teeth?
Parents should not avoid necessary dental treatment because of concerns about local anesthesia affecting wisdom teeth.
Local anesthesia is considered a safe and widely used tool in dentistry. It allows children and adults to receive dental treatments comfortably while reducing pain and anxiety during procedures.
If a child requires dental treatment involving local anesthesia, dentists consider factors such as:
- The child’s stage of dental development
- The location of the developing teeth
- The type of procedure required
- Overall oral health needs
Maintaining regular dental visits remains one of the best ways to support healthy tooth development.
Can wisdom teeth problems be prevented?
Although local anesthesia for wisdom teeth is not currently considered a proven method to prevent wisdom teeth from developing, regular dental visits can help identify potential issues before they become more serious.
Dental monitoring during childhood and adolescence allows dentists to evaluate:
- Wisdom tooth development
- Jaw growth
- Available space for eruption
- The position of developing teeth
Early assessment can help determine whether wisdom teeth are likely to cause problems in the future and whether preventive treatment may be appropriate.
Schedule a wisdom tooth consultation in Thornhill
At Westmount Dental, our team provides comprehensive dental services for patients of all ages, including wisdom tooth evaluations and personalized treatment planning. We use advanced diagnostic tools to monitor wisdom tooth development and determine the most appropriate approach based on your oral health needs.
Located in Thornhill, our dental office welcomes new patients, routine consultations, and dental emergencies. Contact Westmount Dental today to schedule your appointment and learn more about your wisdom tooth treatment options.
