Selective interventional treatment of the maxillary branch
The maxillary branch (V2) of the trigeminal nerve
The maxillary branch (V2) of the trigeminal nerve innervates:
- zygomatic region
- cheek
- upper lip
- upper dental arch
- maxillary sinus
V2 is frequently involved in trigeminal neuralgia. However, the distribution of pain to the cheek or upper teeth alone does not identify the cause.
When radiofrequency V2 is considered
Radiofrequency of the trigeminal nerve V2 may be evaluated only after proper clinical assessment, in the presence of:
- trigeminal neuralgia with clear involvement of the maxillary branch
- V2 trigeminal pain refractory to pharmacological therapy
- stable and consistent diagnosis over time
- failure or intolerance to conservative treatments
Isolated dental or maxillary pain does not in itself represent an indication. When necessary, dental evaluation helps distinguish a dental cause from neuralgia. Persistent pain after dental treatment also requires consideration of trigeminal neuropathy: it should not be automatically treated as classical neuralgia.
Anatomy and target selection
In planning, it must be considered that the V2 branch:
- presents anatomical variability
- has complex relationships with bony and sinus structures
- requires precision in positioning
Treatment of a peripheral branch, such as the infraorbital, differs from a more proximal intervention on the maxillary nerve or the Gasserian ganglion. Target, delivery method, and expected outcomes must be explained before the procedure.
Clinical pathway before the procedure
Before considering radiofrequency of the trigeminal nerve V2, it is essential to complete a structured specialist pathway, which includes:
- Thorough clinical evaluation
- Distinction between neuralgia, neuropathy, and other causes of persistent facial pain
- Analysis of clinical and therapeutic history
- Review of magnetic resonance imaging and other available examinations
- Possible selective diagnostic tests
A selective block may provide information, but does not confirm the diagnosis alone nor guarantee the benefit of radiofrequency. trigeminal assessment pathway.
Thermal and pulsed radiofrequency
In the treatment of the maxillary branch, the following may be considered:
- thermal or lesional radiofrequency: produces a controlled lesion to reduce pain transmission; may result in reduced sensation
- pulsed radiofrequency: delivers pulses interspersed with pauses, with the aim of modulating nerve activity and limiting thermal effect; is not without risks
The two modalities are not equivalent and the results of a ganglion treatment should not be automatically transferred to peripheral treatment. Learn more about trigeminal radiofrequency techniques. The choice depends on:
- characteristics of the pain
- duration of the disease
- response to previous treatments
- individual risk profile
How the procedure is performed
Radiofrequency of the trigeminal nerve V2 is performed:
- in a controlled environment
- under sterile conditions
- under fluoroscopic guidance
- with personalised parameters
Correct identification of the target is essential for:
- efficacy
- safety
- reduction of unwanted effects
Risks and specific considerations
In the treatment of the maxillary branch, the following must be considered:
- reduced sensation or numbness in the treated area, which may persist
- transient pain or discomfort after the procedure
- tingling or abnormal painful sensations; rarely, in lesional procedures, persistent pain in an insensate area (anaesthesia dolorosa)
Bleeding or infection at the access site are also possible. Frequency and severity of risks depend on technique and target: they must be discussed in the informed consent, without equating peripheral and ganglion procedures. RCS guidelines.
Expected benefits and limitations
In properly selected patients, the procedure may result in:
- significant reduction in pain intensity
- decreased frequency of attacks
- improved quality of life
In neuralgia, carbamazepine and oxcarbazepine are first-line drugs. When control is insufficient or therapy is poorly tolerated, surgical options are also discussed: in the classical form, microvascular decompression is the first recommended surgical option, when appropriate for the patient. EAN guidelines.
At follow-up visits, attacks, sensation, and daily activities are evaluated. Any reduction in medications must be agreed upon with the treating physician; a recurrence requires reassessment. For radiofrequency, it is essential to clarify that:
- the response is not uniform
- the effect may be temporary
- there are no guaranteed results
Clinical experience
Radiofrequency of the trigeminal nerve V2 is performed by Dr Evangelos Panagiotakos MD as part of a specialist pathway dedicated to complex craniofacial pain, with a rigorous and selective approach, developed through the management of complex cases.
Links to trigeminal pain pages
Scientific references
Selected references for further reading on the diagnoses and treatments discussed on this page.
- Bendtsen L et al. European Academy of Neurology guideline on trigeminal neuralgia. Eur J Neurol. 2019;26:831–849. (Guidelines)
- Can E et al. Evaluation of the efficacy of ultrasound-guided maxillary and mandibular nerve pulsed radiofrequency treatment for trigeminal neuralgia and factors associated with successful response: a retrospective study. Acta Neurol Belg. 2025;125:109–117. (Retrospective study)
- Yildiz G, Akkaya OT. A Comparison Between the Efficacy of Trigeminal Ganglion Radiofrequency Thermocoagulation and Ultrasound-Guided Maxillary-Mandibular Nerve Pulsed Radiofrequency in the Treatment of Trigeminal Neuralgia: A Randomized Clinical Trial. Cureus. 2024;16:e61565. (Randomised trial)
Indications depend on the diagnosis and technique: thermal and pulsed radiofrequency have different objectives and evidence bases.