Custom Jaw Implants vs. Orthognathic Surgery: Which One Do You Actually Need?
If you have spent any time researching jawline surgery, you have seen two approaches: custom implants that add contour to the jaw, and orthognathic ("bimax") surgery that moves the jaws themselves. The internet argues about it endlessly. Anatomically, the answer is not a matter of opinion — it comes down to one question.
What implants can and cannot do
A patient-specific implant (PSI) is a precisely milled piece designed on your CT scan, fixed onto the surface of your existing bone. It adds contour — gonial angle definition, lateral width, chin projection in modest amounts. What it cannot do: change where your jaw actually sits, correct your bite, or open your airway. An implant on a recessed mandible is a well-manufactured mask over an unsolved problem — and as soft tissue ages and thins, oversized implants tend to announce themselves: visible borders, an operated look, and in some cases bone resorption underneath.
What orthognathic surgery does
Orthognathic surgery cuts and repositions the maxilla and/or mandible itself. Projection, facial thirds, asymmetry, chin position — addressed at the foundation. Two consequences implants cannot offer: the occlusion is addressed rather than bypassed, and jaw advancement can enlarge the pharyngeal airway — the same mechanism used to treat obstructive sleep apnea (read: MMA surgery). It is bigger surgery with a longer recovery, usually coordinated with orthodontics — and when the skeleton is in the wrong place, skeletal correction is generally the appropriate treatment.
A decision matrix
- Recessed lower jaw, overbite, weak profile → orthognathic surgery; genioplasty or modest PSI as refinement if needed.
- Normal bite, normal jaw position, soft jawline definition → contouring: genioplasty and/or measured PSI can be legitimate.
- Asymmetry → depends on origin: skeletal asymmetry is addressed at the bone; surface asymmetry may be masked with PSI.
- Snoring / sleep apnea alongside a weak jaw → this may be a medical indication for advancement, not a cosmetic dilemma.
Which category you fall into is not decided by forum consensus or by mirror assessment — it is decided by cephalometric analysis on your CT. This analysis is usually done in three dimensions on CT, so the skeletal plan can be reviewed before a decision.
Why implant-only plans look attractive
Implant-only procedures are shorter and need no orthodontic phase; they do not change jaw position or the bite.
A clinical examination decides which category your anatomy falls into.
Her cerrahi veya girişimsel işlemde sonuçlar kişiden kişiye değişiklik gösterebilir. İşlem öncesinde hekiminizden detaylı görüş almanız önerilir.
This article is for information purposes only and does not replace medical examination and diagnosis. Results of any surgical or interventional procedure may vary from person to person. You are advised to obtain a detailed opinion from your physician before any procedure.
Last updated: · Editor: Prof. Dr. Selçuk Basa (Professor of Oral and Maxillofacial Surgery) · selcuk.basa@maxillofacial.com