How do you know if there is nerve damage after a wisdom tooth extraction?

Prolonged numbness. (paresthesia) is a typical sign that there might be an underlying problem. Proper x-rays (panoramic) or a cbct should be taken by the treating dentist to evaluate prior to surgery.
Altered sensation. Prolonged altered sensation in an area supplied by the nerve would suggest some nerve involvement. A wide range of sensations can be present. Some describe a pins and needle sensation, tingling, itching , burning, numbness and/or altered taste. Some may describe an increase in sensation or sensitivity in certain areas.

Related Questions

How severe can nerve damage be after a wisdom tooth extraction? Is there a chance of a droopy/paralyzed lip?

One of the risks. Nerve damage is one of the risks of wisdom tooth extraction. Please see this site for more information. http://www.mayoclinic.com/health/wisdom-tooth-extraction/my01212. Read more...
No droop lip. The nerve damage after a wisdom tooth is extracted is called a paraesthesia. It could be temporary and healed after several months. However it could be permanent. It usually does not result in droopy lip. Read more...
No. The lip will not be paralyzed. However, there is low risk of lower lip numbness or tongue numbness from a wisdom tooth extraction. The sensation usually feels "heavy". Read more...

Is bovine collagen a viable nerve regeneration option for nerve damage due to wisdom tooth extraction? Heard incredible things about it.

Never heard as such . Bovine collagen has been used for many years in conjunction with bone graft to cover the grafted site, or as a bone substitute in areas that bone fill is desired. I have never heard of any potential, nor capability for nerve regeneration. Please double check with your surgeon... You might be misunderstood. Othrwise this is a dangerous, non-science based claim. Read more...
Vague. I would check with a surgeon who is qualified to answer your question, of contact some oral surgery organizations who can hopefully direct you to the answers you desire. Read more...
No. There are many uses for bovine collagen but I have never heard of nerve regeneration being one. We use bovine collagen as a barrier for bone grafts and as a matrix in endodontics for perforations and apical barrier containment. Read more...

Are thereany medications for trigeminal sensory pain in left side face/head after horizontally-impacted wisdom tooth extraction & lingual nerve damage?

Several. We use different medications to help alleviate nerve pain. Amitryptilline is an old-fashioned anti-depressant that we never use for depression any more - it helps. Seizure medications like gabapentin, carbamezapine and valproic acid help. You may need more than one type of medication and sometimes you find out what works only by trial and error. See a neurologist for treatment. Read more...

3 weeks post wisdom tooth extraction. Can chewing on the site cause nerve or jaw damage?

No. If it hasn't healed, then see your dentist. If it has then keep it clean and it'll be ok. Read more...
Definitely, no. Your diet may consist of any food that can be chewed and successfully swallowed. Good luck! Read more...

If nerve from a lower wisdom tooth extraction isn't damaged, is there any reason paresthesia would be permanent?

Paraesthesis. I've seen a number of patients who presented with paresthesia. Some never had their symptoms reversed, others partially felt the lip and tissue around her Mandibular teeth and some notice the paresthesia disappearing altogether. Read more...
The other reason. is due to a chronic disease, such as diabetes, or occurs as a complication of treatments like chemotherapy. Anti-inflammatory medications such as NSAIDs or corticosteroid drugs are recommended if the person's symptoms are mild. However, paresthesia as a complication of lower wisdom tooth extraction or dental injection is possible. Read more...