Dental Nerve Injury in Oregon: Deadlines and Consent

Most numbness after dental surgery goes away. Lips, chin or tongue feel strange for a few days or weeks after a wisdom tooth comes out or an implant goes in, and then normal sensation returns.

Sometimes it does not. When numbness, burning, or a persistent altered sensation lasts for months, the question becomes whether the nerve was injured in a way that careful treatment would have avoided.

This article explains how Oregon law frames dental nerve injury claims. It does not assess any particular case or predict any outcome.

Two nerves account for most of these injuries

The inferior alveolar nerve runs through the lower jaw inside a bony canal and supplies sensation to the lower lip and chin. The lingual nerve runs nearby in soft tissue and supplies sensation and taste to the side of the tongue. Both sit close to the lower molars and to the sites where lower implants are placed.

Injuries to them arise in recognizable patterns: during removal of a lower wisdom tooth positioned against the canal, during placement of an implant that extends beyond the available bone height, or during injection. The resulting symptoms — numbness, tingling, burning pain, altered taste, or difficulty with speech and eating — range from temporary to permanent.

The clinical fact that these nerves are close to the surgical site is not itself a legal conclusion. What matters legally is what was known before the procedure, what was planned, and what was disclosed.

Oregon puts dental claims on the same clock as medical ones

This is easy to miss, because dental care is often thought of as separate from medical care. Oregon's limitations statute does not treat it separately. ORS 12.110(4) governs "[a]n action to recover damages for injuries to the person arising from any medical, surgical or dental treatment, omission or operation …"¹

The consequence is that a dental injury claim runs on the medical-malpractice timeline. The action "shall be commenced within two years from the date when the injury is first discovered or in the exercise of reasonable care should have been discovered," subject to an outer limit: "However, notwithstanding the provisions of ORS 12.160, every such action shall be commenced within five years from the date of the treatment, omission or operation upon which the action is based …" Where fraud, deceit or misleading representation prevented an action within five years, the subsection allows two years from the date that conduct is discovered or reasonably should have been discovered.¹

Nerve injury cases interact with the discovery rule in a particular way. Numbness immediately after an extraction is expected, and patients are routinely told it should resolve. The point at which a patient knew or reasonably should have known that the numbness reflected an injury rather than ordinary post-operative swelling is frequently contested, and it is a question of fact rather than something the statute answers.

Planning is part of the practice of dentistry

Oregon defines dentistry to include more than the procedure itself. Under ORS 679.010(9)(a), dentistry "means the healing art concerned with: (A) The examination, diagnosis, treatment planning, treatment, care and prevention of conditions within the human oral cavity and maxillofacial region, and of conditions of adjacent or related tissues and structures".²

Treatment planning appears in that definition alongside treatment. That matters in nerve injury cases, because the contested conduct often precedes the operation — what imaging was obtained, whether it showed the relationship between the tooth root or planned implant site and the nerve canal, and what the plan accounted for.

Informed consent has a defined meaning in Oregon dental rules

The Oregon Board of Dentistry defines the term. Under OAR 818-001-0002(10), "Informed Consent" means "the consent obtained following a thorough and easily understood explanation to the patient, or patient's guardian, of the proposed procedures, any available alternative procedures and any risks associated with the procedures." The rule continues: "Following the explanation, the licensee shall ask the patient, or the patient's guardian, if there are any questions. The licensee shall provide thorough and easily understood answers to all questions asked."³

The Board has also made the absence of consent a form of unacceptable patient care. OAR 818-012-0010 provides that "[t]he Board finds, using the criteria set forth in ORS 679.140(4), that a licensee engages in or permits the performance of unacceptable patient care if the licensee does or permits any person to" — among other things — "[p]erform any procedure for which the patient or patient's guardian has not previously given informed consent," subject to an emergency exception where a minor's guardian is unavailable or the patient cannot respond.³

Read together, those two rules describe consent as an explanation of risks and alternatives with an opportunity to ask questions, not a signature on a form. In a nerve injury case, whether the risk of persistent numbness was among the risks explained is usually a live question.

Board discipline and a civil claim are different proceedings

ORS 679.140 is the Board's disciplinary statute; its catchline is "Discipline of licensee; grounds; procedure; sanctions." One of its grounds speaks directly to care. Under ORS 679.140(1)(e), the Board may discipline a licensee for "[e]ngaging in or permitting the performance of unacceptable patient care by the dentist or by any person working under the supervision of the dentist due to a deliberate or negligent act or failure to act by the dentist, regardless of whether actual injury to the patient is established."²

That last phrase is worth reading twice. A Board proceeding on unacceptable patient care does not depend on proof that the patient was actually injured.

Subsection (4) then sets out what informs the assessment: "[i]n determining what constitutes unacceptable patient care, the board may take into account all relevant factors and practices," including the practices generally and currently followed and accepted by persons licensed to practice dentistry in this state, the current teachings at accredited dental schools, relevant technical reports published in recognized dental journals, and the desirability of reasonable experimentation in furtherance of the dental arts.²

Those provisions describe what the Board does about a license. Patients sometimes assume a Board complaint and a claim for damages are the same thing, or that one resolves the other.

What tends to be documented

Nerve injury cases are usually built from records that already exist. Pre-operative imaging shows what was visible about the nerve's position before the procedure. The treatment plan and chart notes show what was intended. The consent documentation shows what was said to have been discussed. And the post-operative record shows when the altered sensation was first reported and what was done about it — including whether and when the patient was referred for evaluation.

Because sensation can recover over many months, the timing recorded in those notes often matters as much as their content.

This article is educational

This article describes Oregon law in general terms. It is not legal advice and does not create an attorney-client relationship.

Time limits matter. Most Oregon personal-injury and auto-accident claims must be filed within two years of the injury or accident. Medical malpractice claims must be filed within two years of when you knew or reasonably should have known of the negligence, with an outer limit of five years from the act itself (with a fraud exception). Wrongful death claims must be filed within three years of the date of death. Claims against public bodies (cities, counties, state agencies, public hospitals) require a notice of claim within 180 days. Missing these deadlines typically ends a case.

If you think you may have a claim, call Huegli Law at 971-317-6436 for a free case review. Todd Huegli is licensed in Oregon and consults on cases in Oregon only.

Footnotes

1. ORS 12.110 and ORS 12.160 (ORS chapter 12 — limitations of actions). https://www.oregonlegislature.gov/bills_laws/ors/ors012.html ↩ ↩²

2. ORS 679.010 and ORS 679.140 (ORS chapter 679 — dentists). https://www.oregonlegislature.gov/bills_laws/ors/ors679.html ↩ ↩² ↩³

3. Oregon Board of Dentistry — Dental Practice Act (OAR 818-001-0002 and OAR 818-012-0010). https://www.oregon.gov/dentistry/Documents/Dental%20Practice%20Act%207.1.22.pdf ↩ ↩²