Treatment for a receding lower jaw aims to correct the bite and profile problem caused by the lower jaw sitting too far back relative to the upper jaw. Two things determine the method more than anything else: whether the patient is still growing, and whether the retrusion comes from the bone (skeletal) or only from the position of the teeth (dental). In growing children and teenagers, appliances that guide the lower jaw forward can be used. In people who have finished growing, the bite is either corrected by adapting the teeth to the bone or, in pronounced cases, orthodontics is planned together with jaw surgery. This page focuses on the treatment decision; for what the condition is and its signs, see our article what is a receding lower jaw.
What is assessed before deciding on treatment?
The same appearance can have different causes. The lower jaw may genuinely be small or set back; the upper jaw may have grown too far forward; or the jaws may be in harmony while the upper front teeth tilt forward, making the chin look set back. This distinction changes the treatment completely. The examination usually follows these steps:
- Clinical examination and facial analysis: The profile, lip closure, chin position and how the teeth show when smiling are assessed.
- Bite measurements: The molar relationship (usually Class II), how far the upper front teeth sit in front of the lower teeth (overjet) and the vertical overlap (overbite) are measured. For what the bite classes mean, see our bite classes page.
- Cephalometric X-ray: On a lateral skull film, the position of the jaws relative to the cranial base and to each other is calculated with angles. This shows whether the problem lies in the bone or in the teeth.
- Determining the growth stage: In children and teenagers, the appearance of the neck vertebrae on the X-ray, or a hand-wrist film if needed, shows whether the growth spurt is approaching, under way or over.
- Digital records: An intraoral scan and photographs are the basis for planning and for tracking progress.
If there are findings such as snoring, pauses in breathing during sleep, mouth breathing, or clicking and pain in the jaw joint, these are also recorded and, when necessary, assessed together with the relevant physicians.
How is a receding lower jaw treated in children and teenagers?
While growth continues, the aim is to improve the harmony between the jaws by making use of the lower jaw's growth potential. Functional appliances that position the lower jaw forward are used for this. One removable option is the two-piece Twin Block appliance; fixed options include Herbst-type appliances. How these appliances work and their types are explained in detail in our article the Twin Block appliance.
Timing is the most critical point of this treatment. Functional treatment is more effective when it coincides with the pubertal growth spurt. This period usually starts earlier in girls than in boys; however, age alone is not the criterion, and the X-ray finding is what counts. Treatment started too early takes longer, while in treatment started too late the skeletal contribution is smaller.
Realistic expectations also matter. Scientific studies show that a significant part of the effect of functional appliances occurs at the level of the teeth and the tooth-bearing bone, while the contribution to lower jaw length varies from person to person and generally remains limited. Even so, treatment at the right time reduces a large gap between the front teeth, lowers the risk of trauma to protruding upper teeth and makes the next stage easier.
Can clear aligners be used in this age group?
The Invisalign system offers an option for growing teenagers in which wings added to the aligners position the lower jaw forward. With this method, straightening the teeth and guiding the lower jaw forward are carried out within the same aligner series. Suitability depends on the growth stage, the size of the bite discrepancy and whether the teenager keeps to wearing the aligners 20–22 hours a day. For aligner treatment for teenagers, see our Invisalign for teens page.
What happens after functional treatment?
The appliance phase lasts 9–15 months for most patients. After that, a second phase with fixed braces or clear aligners is needed for fine-tuning the teeth. The bite is monitored until growth is complete; during this period, retention appliances worn at night help preserve the relationship that has been achieved.
How is a receding lower jaw treated in adults?
Once growth is complete, it is no longer possible to grow the lower jaw with appliances. At this point there are two main routes, and the choice is made according to the degree of retrusion and the patient's expectations.
Orthodontic camouflage
Camouflage means adapting the teeth to the jaws without changing the position of the jaws. In mild and moderate skeletal discrepancies, the bite can be corrected this way. The methods that can be used are:
- Moving the upper molars backward (distalization), with support from mini-screws when needed.
- Extracting one premolar on each side of the upper jaw and retracting the front teeth.
- Class II elastics worn between the lower and upper jaws.
- In suitable cases, planning these movements with clear aligners; in aligner treatment, the tooth movements can be seen step by step in ClinCheck.
The limit of camouflage is clear: the bite and the protruding teeth are corrected, but the position of the chin and the profile do not change noticeably. It is a suitable option for patients who are happy with their profile and whose problem is mainly protruding teeth. For treating protruding teeth with aligners, see our clear aligners for protruding teeth page.
Orthodontics combined with jaw surgery
If the skeletal discrepancy is large, if the profile bothers the patient, or if camouflage would push the teeth beyond the limits of the bone, orthognathic surgery comes into consideration. The process usually consists of three stages:
- Pre-surgical orthodontics: The teeth are aligned so that they will fit together once the jaws are brought into the correct position. During this stage the profile may temporarily look more pronounced; this is expected.
- Surgery: An oral and maxillofacial surgeon moves the lower jaw forward; when necessary, the upper jaw or the chin is also included in the procedure. The operation is performed in a hospital.
- Post-surgical orthodontics: The bite is fine-tuned and retention begins.
The total duration varies by case but usually reaches 1.5–2 years. This route requires joint planning by the orthodontist and the surgeon; the risks of surgery, the recovery period and the expected changes are discussed in detail before a decision is made.
Which option suits whom?
The framework below is a general roadmap; the individual decision is made based on the examination findings.
- Children and teenagers before or during the growth spurt: A functional appliance or aligners that position the lower jaw forward, followed by a fine-tuning phase.
- Adults who have finished growing, have a mild to moderate discrepancy and are happy with their profile: Camouflage; fixed braces or, in suitable cases, clear aligners.
- Adults with a pronounced skeletal discrepancy or who want a change in profile: Orthodontics combined with jaw surgery.
- Patients who were treated before and whose bite has relapsed: The cause (such as continued growth or stopping the retainer) needs to be understood first.
What aligners can and cannot do in skeletal problems is explained separately on our can clear aligners fix jaw structure page.
How does the treatment process work step by step?
- First examination: Complaints, expectations and oral health are assessed; the necessary X-rays are planned.
- Records and analysis: An intraoral digital scan, photographs and cephalometric measurements are taken.
- Discussing the options: The suitable routes are explained in writing together with their durations, advantages and limitations; the fee is also communicated at this stage based on the plan.
- Active treatment: Check-ups are usually every 4–8 weeks with appliance and braces treatment, and every 6–10 weeks with aligner treatment.
- Retention: After active treatment ends, retainer use begins and continues for a long time.
Are the results permanent, can relapse occur?
After treatment of a receding lower jaw, the bite may tend to partially return. The main reasons are the final phase of growth in teenagers and the tendency of teeth to return to their old positions in adults. That is why retention is an integral part of treatment: usually a thin wire bonded behind the lower front teeth and a removable retainer worn at night are used together. For details, see our retainer after treatment page. You can find all types of orthodontic treatment on our orthodontic treatments page.