The Connection Between Teeth Alignment and Allergic Rhinitis - Dentistry

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The relationship between orthodontics and the nose?


Hello, doctor.
Is there a relationship between dental orthodontics and allergic rhinitis? I have had malocclusion and severe crowding since childhood, along with significant post-nasal drip.
Recently, I saw news reports suggesting a connection between nasal allergies and dental orthodontics.
Is this true?

Kola, 30~39 year old female. Ask Date: 2021/03/24

Dr. Lin Jiayong reply Dentistry


Hello: The second maxillary premolar and the first maxillary molar are located very close to the maxillary sinus.
If there is inflammation in the teeth, it can indeed affect the sinus, leading to nasal symptoms.
It is recommended to visit a nearby medical facility for an X-ray to confirm whether there is a communication between the oral cavity and the sinus.
Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/03/24

More Info


The connection between teeth alignment and allergic rhinitis is a topic that has garnered interest in both dental and medical communities. While there is no direct causal relationship established between orthodontic treatment and allergic rhinitis, there are several factors worth considering that may explain the perceived link between the two.

Firstly, it is important to understand what allergic rhinitis is. It is an allergic reaction that causes inflammation of the nasal passages, often triggered by allergens such as pollen, dust mites, mold, or pet dander. Symptoms typically include sneezing, nasal congestion, runny nose, and itchy eyes. On the other hand, orthodontic issues such as malocclusion (misalignment of teeth) and overcrowding can lead to various dental problems, including difficulty in maintaining oral hygiene, which can exacerbate dental issues.

One potential connection between orthodontics and allergic rhinitis could be related to mouth breathing. Individuals with severe dental crowding or misalignment may find it difficult to breathe through their noses, leading them to breathe through their mouths instead. Mouth breathing can dry out the oral cavity and may contribute to dental problems, such as gum disease or tooth decay. Additionally, chronic mouth breathing can lead to changes in facial structure and may affect the alignment of teeth over time.

Moreover, there is some evidence suggesting that chronic nasal congestion, which is common in individuals with allergic rhinitis, can lead to changes in oral posture and function. When the nasal passages are blocked, individuals may unconsciously adopt a mouth-breathing posture, which can influence the development of dental arches and the alignment of teeth. This could potentially lead to the need for orthodontic treatment later in life.

Furthermore, the relationship between dental health and overall health cannot be overlooked. Poor oral health has been linked to various systemic conditions, including respiratory issues. Inflammation in the mouth can potentially contribute to systemic inflammation, which may exacerbate conditions like allergic rhinitis. Therefore, maintaining good oral hygiene and addressing dental issues promptly may have a positive impact on overall health, including respiratory health.

In your case, since you have experienced both dental crowding and severe nasal congestion, it would be beneficial to address both issues concurrently. Consulting with an orthodontist can help determine the best course of action for correcting your dental alignment. At the same time, seeking advice from an allergist or an ENT specialist can help manage your allergic rhinitis effectively. They may recommend treatments such as antihistamines, nasal corticosteroids, or allergy immunotherapy to alleviate your symptoms.

In conclusion, while there is no direct evidence linking orthodontic treatment to allergic rhinitis, the interplay between dental alignment, oral function, and nasal breathing is complex. Addressing both dental and nasal issues holistically may lead to improved outcomes for both your dental health and your allergic rhinitis symptoms. It is essential to maintain open communication with your healthcare providers to ensure that all aspects of your health are being considered and treated appropriately.

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