Mandibular Retrognathia
Orthodontic and skeletal treatment for a lower jaw that is positioned behind the upper jaw. In children, treatment may involve growth guidance; in adults, it may include camouflage treatment or surgical planning.
A More Balanced Profile and a Healthier Bite
Mandibular retrognathia can affect not only tooth alignment but also the facial profile, jaw bite, and in some patients, functional balance. Different treatment approaches may be required during childhood and growth periods versus in adult patients. The goal is to achieve a more balanced bite, a more harmonious profile, and a healthier oral structure appropriate to the patient’s age and clinical condition.
Whether the issue is primarily dental (tooth positions) or skeletal (jaw position) is determined through clinical examination and cephalometric analysis, as this distinction defines the treatment approach.
For growing patients, the remaining growth potential is assessed. If significant growth remains, functional appliances can guide the lower jaw forward, a window only available during childhood.
Hastalarımızın tedaviye başlamadan önce süreç, aşamalar ve olası detaylar hakkında açık şekilde bilgi almasını önemsiyoruz. Amacımız, karar sürecini daha anlaşılır ve daha güvenli hale getirmektir.
Treatment is sequenced so that any needed restorations or implants are placed after the bite is corrected, ensuring long-term stability and aesthetic harmony.
What Is Mandibular Retrognathia?
Mandibular retrognathia is an orthodontic and sometimes skeletal problem that occurs when the lower jaw is positioned behind the upper jaw. While in some patients this appears only as a bite disorder, in others it can significantly affect the facial profile and the relationship between upper and lower teeth. Depending on severity, age, and growth development status, different treatment options can be considered.
Genetic predisposition, growth development differences, and jaw structure-related factors can play a role. Definitive evaluation is done through clinical examination and orthodontic analysis.
No. In addition to aesthetic appearance, the bite disorder, chewing balance, and tooth contact relationship can also be affected.
No. Treatment varies based on the patient's age, growth potential, and the degree of dental and skeletal problem.
Evaluate the Treatment Process in Advance with Detailed Orthodontic Planning
Proper planning is of great importance in mandibular retrognathia treatment. Because while the issue is more dental-level in some patients, jaw position and skeletal structure may be more decisive in other cases. For this reason, the detailed analysis performed before treatment plays a critical role in selecting the correct method.
- The relationship between the upper and lower jaw is evaluated in detail.
- Facial profile and aesthetic balance are analyzed.
- Bite relationship and tooth positions are examined.
- A treatment plan appropriate to age and growth status is created.
What Does Mandibular Retrognathia Lead To?
Mandibular retrognathia is not just an aesthetic concern. The receded lower jaw can cause the upper front teeth to excessively overlap the lower teeth, creating a deep bite. A deep bite can cause the lower front teeth to contact the palate, tooth wear, and temporomandibular joint (TMJ) problems.
From a profile perspective, the lower jaw being behind causes the chin to appear weak and results in what is described as a “bird profile.” This can lead to self-confidence issues especially in adults.
Mandibular Retrognathia in Children: The Importance of Early Intervention
In children, mandibular retrognathia is most effectively treated when detected during the growth period. With functional appliances (such as Twin Block, Herbst), the growth of the lower jaw can be guided forward. This treatment is only possible in children with growth potential (generally ages 8-14). After growth is complete, jaw guidance is no longer possible.
For this reason, it is recommended that every child be seen by an orthodontic specialist by age 7. Jaw development is monitored through regular pediatric dentistry check-ups and referral to an orthodontic specialist is made when needed. Supportive treatment with Invisalign First can also be planned during the early period.
Mandibular Retrognathia Treatment in Adults
In adults where growth is complete, the treatment approach is divided into two based on the severity of the problem:
Camouflage treatment: In mild-to-moderate mandibular retrognathia, the bite is improved by adjusting tooth positions without changing the jaw position. With Invisalign or braces, the angles of upper and lower teeth are adjusted to achieve an aesthetically and functionally acceptable result.
Orthognathic surgery: In advanced skeletal mandibular retrognathia, tooth movement alone is not sufficient. Teeth are brought to the ideal position with orthodontic treatment, then the lower jaw is moved forward with orthognathic surgery. This combined treatment dramatically improves both the profile and the bite.
The Relationship Between Mandibular Retrognathia and Upper Jaw Narrowness
Mandibular retrognathia is frequently seen together with a narrow upper jaw. When the upper jaw is narrow, crossbite can develop and cause the lower jaw to shift sideways. In such cases, upper jaw expansion also becomes part of the treatment plan. For upper jaw expansion in adults, MARPE or SARPE methods can be considered.
Untreated mandibular retrognathia can cause excessive loading and wear on the back teeth over time. In cases of advanced wear, restoration with zirconia crowns may be needed. However, restorations done without correcting the bite are subjected to the same wear. For this reason, orthodontic treatment should come first, then restoration.
Frequently Asked Questions
We have compiled the questions we receive about this treatment and answered them as openly and transparently as possible.
Whether it resolves depends on age, the growth development process, and the degree of the problem. Definitive evaluation should be done through examination.
Different treatment options can be considered for different age groups. Examinations during the growth development period are especially important for planning.
No. Depending on the case, different orthodontic approaches, appliances, or more comprehensive treatment options can be considered.
Yes, but the treatment approach may be different from that for children and young patients. The most appropriate plan is determined after detailed examination.
Yes. In some patients, it can create a sense of imbalance in the facial profile. The degree of this effect varies from person to person.
Treatment duration may vary depending on the patient's age, the level of the problem, and the method to be applied. For this reason, personalized evaluation is necessary.
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Content Information
This page was prepared by the Dore Medical Editorial Board and medically reviewed by Dr. Merve Özkan Akagündüz, DDS, MSc.
