How Minor Patients Extend Dental Malpractice Case Timelines
Marc Leffler, DDS, Esq.
June 8, 2026
Reading time: 8 minutes

A teen patient’s persistent maxillary pain led to multiple root canal treatments, but the true cause went undiagnosed for months. The case highlights the risks of narrow diagnosis, missed referrals, and how treating a minor can extend malpractice exposure well beyond the expected timeframe.
Key Concepts
- Malpractice risks associated with missed diagnoses
- Minors and the statute of limitations
- The importance of tail coverage
Background facts
Dr. S was a well-experienced dental practitioner who focused on the care of children, although not a pediatric dentist: she found the work challenging, yet rewarding, especially when those children later brought their own children to be treated. R, age 16, was one such patient, whose father, as a teenager, treated with Dr. S when she was new to practice. Severe, right maxillary pain, with persistent headaches led R to come to the office, outside of the routine of his usual 6-month recall visits. By way of evaluating appropriate periapical films of the upper right molars and premolars, as well as a clinical examination with multiple dental testing modalities that demonstrated equivocal findings, Dr. S concluded that the problem was most likely originating with tooth #3 and/or tooth #4, as both had deep MOD restorations placed approximately 3 years prior.
The more likely offending tooth, in the opinion of Dr. S, was the first molar, so, with the approval of R’s father, root canal therapy was completed on that tooth, without any apparent complication, and with the finding of a vital pulp. Nearly a month later, R’s symptoms continued as before the endodontic treatment, so, again with the father’s agreement, Dr. S completed RCT on tooth #4, also without complication and also with a vital pulp. Despite both teeth being subsequently restored, R’s initial presenting complaints remained, and were even subjectively worse, now approaching 6 months later; additionally, R began to have right-sided sinus congestion.
R’s parents arranged for him to see an ENT, who, after performing a limited clinical assessment, sent R for a CT of the sinuses. The study clearly showed a well-circumscribed, lima-bean-sized mass in the right maxillary sinus, located seemingly entirely deep to the Schneiderian Membrane and just above the maxillary posterior teeth. Because of its localized appearance, the ENT expressed to R and his parents that the lesion was likely benign, so a plan was developed to perform an exploratory surgical procedure, through a Caldwell-Luc approach, to excise the mass and examine it microscopically. Surgery at a local hospital went forward under general anesthesia, with the lesion removed and the sinus debrided. The biopsy report determination was that the lesion was a polyp which was, as anticipated, benign and in need of no further treatment.
Within 2 weeks, R was, for the first time in the better part of a year, free of pain and headaches. The ENT concluded and stated to his patient and his parents that all of the symptoms were all along not due to any dental problem, but instead the sinus polyp. It was not until over a year after the RCTs were completed that R’s father questioned Dr. S as to why she failed to diagnose “something” abnormal in the sinus, why she failed to consider any source for R’s complaints other than teeth, and why she performed root canal therapy on 2 teeth without any objective basis for doing so. Although she apologized and expressed empathy for all that R had gone through, she was not able to provide any answers to the direct questions posed to her.
Legal action
R’s father read online that teeth which have had root canal therapy are more likely to fracture, and therefore be prematurely lost, so he began to consider costs that would likely and unnecessarily need to be borne by R in the future, as well as the emotional distress he would endure if he had to go through multiple dental extractions and their replacements. He sought out and retained an attorney to act on his son’s behalf by suing Dr. S for dental malpractice.
When Dr. S was served with papers that had commenced a lawsuit against her, she was immediately faced with a practical reality that she was aware of but had not realistically considered would arise: she had recently changed malpractice carriers but had not purchased extended reporting coverage – a “tail” – for the first carrier’s claims-made policy; because the treatment of R which was at issue took place during the period of the earlier policy, she had no insurance coverage, either for defense or indemnification (payment). After looking at the legal costs she would have to personally bear as a result, she opted to represent herself – acting pro se – counting on some “unofficial” help from a close friend who was an attorney, although not one who had ever practiced in the professional malpractice arena.
Dr. S learned that the state in which she practiced dentistry had a 1-year statute of limitations period for dental malpractice cases, meaning, as she interpreted it, that no such suit against her could validly go forward if it had been started more than 1 year after the date(s) of the claimed negligent treatment, as this suit had. She asked her attorney friend what she could do to stop the suit in its tracks because it was not timely begun: her friend said that the mechanism for doing that was to make a motion to the court for dismissal, on that specific basis. With her friend unwilling to assist her beyond that sole piece of advice, Dr. S thoroughly researched how to place that before the court, realizing that this was her only true hope to be successful in defending the case, acknowledging that she had fallen short in diagnosing the actual problem R had, and instituting incorrect and unneeded treatment. Dr. S’s motion was quickly and decisively opposed by the lawyer for the plaintiffs, R and his father.
The opposition made it clear that Dr. S had relied on only a portion of the law which guided the statute of limitations, ignoring the critical part here, namely that R, as a minor, was entitled to an extension of that time period, such that he was permitted to file his case until 1 year after he reached the age of majority; given that R was well short of age 19, the judge denied Dr. S’s motion and allowed the case to move forward. This left Dr. S with 3 basic options: (1) hire a lawyer to represent/defend her (which she was not willing to do); (2) continue to represent herself through discovery and potentially trial; or (3) try to reach a settlement to end the case. She weighed the costs, likelihood of success, and an unknown amount of money to be paid out if R later prevailed, if she proceeded with her defense, versus taking the bitter pill right then and there, and resolving the case for a sum of money that would be acceptable to all involved. She opted for the latter, and was able to work with R’s attorney to reach an amicable settlement amount, which covered out-of-pocket expenses and compensation for R’s pain and suffering after Dr. S completed her treatment.
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Takeaways
The statute of limitations is the amount of time a plaintiff has to initiate suit. States differ as to whether that time clock begins at the time of the negligent action, or when the effects of that negligent action are discovered, or small variations on those themes. But regardless of those differences, the amount of time allowed by each state is strictly fixed for the vast majority of cases. The most frequent exception in nearly all, if not all, of the states is that minors are entitled to an extended amount of time within which to begin a suit in dental malpractice, with the exact length of that time extension also specific to each state. As a tandem concept, many states also require that dentists maintain records for minors longer than for adult patients; practitioners need to be aware of these details, lest they destroy records prematurely, thereby setting up significant legal issues if they cannot produce records during litigation or in response to a Board complaint, at a time when they should still have been maintained.
This case speaks also to both the type and quality of radiographs. Here, while Dr. S was able to radiographically visualize the entirety of the teeth she treated, which is a generally agreed-upon requirement in the dental community, she was unable to visualize the neighboring maxillary sinus. While dentists might legitimately debate whether Dr. S should have taken or ordered a radiographic study (such as a panoramic or CBCT) that also captured the sinus, there is no such dispute that, regardless of how and with what diagnostics she went about it, it was her obligation to assure that she was treating the situation for which the patient was seeking treatment. According to the ENT – by way of what might reasonably be viewed as a joust – Dr. S did not do so. But whether a joust or simply a statement of symptom causation, it was that conclusion by the ENT which most prominently led Dr. S to settle the matter rather than fight it.
Finally, we address the factors which left Dr. S without professional liability coverage: her claims-made policy and her not having purchased a tail upon leaving that policy behind in favor of another. While an occurrence policy will forever protect a dentist – whenever a lawsuit might be filed – if a negligent action took place while that policy was in effect, a claims-made policy will only provide coverage if it is in effect at the time a claim of negligence/malpractice is made, unless a tail was purchased to extend the coverage umbrella of a claims-made policy which is no longer in effect. Some exceptions to the need for a tail – such as death, disability, or retirement – might exist, based upon the stated policy terms, but for the most part, it is the norm that a dentist will be left as Dr. S was if they close a claims-made policy without purchasing tail coverage.
Summary of takeaways:
- Broaden the diagnosis: Persistent or unclear symptoms should prompt consideration of non-dental causes and appropriate referral.
- Avoid unnecessary treatment: Repeating irreversible procedures without clear evidence increases patient harm and liability risk.
- Know your legal exposure: Treating minors can extend the statute of limitations, and gaps in malpractice coverage can leave you personally liable.
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