2D vs. 3D Imaging: What OMS Should Know About Implant Planning
Marc Leffler, DDS, Esq.
February 16, 2026
Reading time: 8 minutes

This real life case study reveals how limited 2D imaging can lead to missed anatomic details and patient complications. See how incorporating 3D imaging may help strengthen diagnostic accuracy and reduce malpractice risk in your oral and maxillofacial surgery practice.
Key Concepts
- How imaging choices influence malpractice risk
- Why expert opinions on imaging often differ
- Key differences between 2D and 3D imaging
Background facts
Dr. P practiced restorative dentistry in a suburban community since her completion of dental school and a general practice residency. During her formal training and after, she engaged in didactic and clinical coursework involving implant placement and restoration, and regularly recommended and employed dental implants in her treatment plans. That was the case when a new area resident, O, a healthy man in his 40s, presented for general care and consideration for replacing missing tooth #30, which was extracted years ago following a trauma-induced fracture.
O’s mouth was in generally good repair, as he practiced good home hygiene and had been a regular dental patient for his entire adult life. Dr. P discussed the replacement options of a 3-unit fixed bridge and an endosseous implant, upon which a single crown would be placed. After taking and viewing a panoramic radiograph, Dr. P advised O that he had “plenty of bone” to support an implant, and she suggested that approach. The costs were similar, so O opted for the implant plan. Dr. P advised O of the usual risks of implant surgery, including a nerve injury which could even be permanent in “rare” situations. O agreed to go forward and set up an appointment within the next few weeks.
At the surgical visit, a chairside assistant presented O with a document entitled Implant Consent Form, telling O that this was exactly what Dr. P had discussed with him. O quickly perused the form and signed it. Based upon measurements she made on the panoramic film, Dr. P determined there to be 14.5 mm of mandibular bone superior to the inferior alveolar canal (IAC), so she planned for and placed a 13 mm fixture. Upon elevating a gingival flap, Dr. P noticed that the lingual height of bone was “a good deal” higher than on the buccal aspect. Other than O briefly wincing toward the end of the preparation phase, all went smoothly, with the implant covered with soft tissue and sutured. A post-placement periapical radiograph showed the implant in very close approximation to the IAC, but Dr. P saw “daylight,” so she was not concerned.
One week later, at the suture removal visit, O complained of “pins and needles” and “numbness” on the right side of his lower lip and chin; Dr. P stated that she remained “unconcerned”, explaining that this is common and all should be back to normal over the next weeks or months. O returned for crown placement 5 months after implant surgery, still with the same “annoying sensations”. Dr. P was surprised that the situation had not normalized, but she continued to reassure O of a return to normal. That never came.
Legal action
O always found the tingling and numbness to be uncomfortable, but he never thought to do anything about it until he met up with a college classmate of his, now an attorney, at an alumni event. The classmate did not practice law where O now lived, but suggested that he consult with an attorney he knew who did “a lot of malpractice work”. O met with that lawyer, who gathered all of Dr. P’s records and sent O to a local neurologist to assess the extent of the injury: the neurologist confirmed that O’s mandibular nerve was, in fact, injured and did not conceive of any improvement, now nearly two years after the surgical event.
O’s attorney contacted an experienced dentist whom he knew, who had testified in dental malpractice cases in the past, and who, like Dr. P, regularly placed and restored implants, seeking to retain that dentist as an expert on behalf of O. Following a review of the records, the expert reported back to the attorney that, in his opinion, Dr. P had deviated from the standard of care, which in the expert’s view required the use of CBCT radiography in order to accurately determine available bone for implant placement. The expert cited specifically to Dr. P’s intraoperative finding of a sloped mandibular crest, which could not have been determined on the 2-D panoramic but would have been seen on a 3-D CBCT, had one been taken. The expert added to that opinion the concept that, once Dr. P noted that lingual-to-buccal slope, she should have immediately stepped back and reconsidered whether the planned-for 13 mm implant was appropriate, which it ended up not being, as the measurement was based upon the highest point of the crest, rather than lower points on that slope, which were closer to the IAC.
The attorney quickly filed suit against Dr. P, as the statute of limitations was approaching. Dr. P contacted her professional liability carrier, which assigned defense counsel to Dr. P. O’s attorney voluntarily shared his expert’s report with defense counsel, hoping to demonstrate a strong basis for an early settlement. But, defense counsel retained its own expert, who opined that the standard of care allowed for 2-D panoramic films for the purpose of implant planning, although acknowledging a deep split within the dental profession, with some dentists and organized dental groups asserting that (exactly because of anatomic situations as Dr. P found) 3-D studies were required prior to posterior mandibular implant placement, with other dentists and dental groups agreeing with this defense expert’s stance. In part, the latter view is supported by the statistical fact that, according to recent assessments, only 29% of U.S. general/restorative dentists have on-site CBCT availability, with less than 2/3 of dental specialists having such access.
Defense counsel recognized that a motion for summary judgment – one seeking dismissal of the case without trial – would not be fruitful because such a motion can only be successful when, among other things, there is no legitimate difference between opposing expert opinions. Therefore, defense counsel thoroughly presented Dr. P with her options: go to trial and ask a jury to determine whether she had run afoul of the standard of care, allowing them to award money to compensate O for his injuries if they determined that she did not meet the standard of care, and if that was causative of his injuries; or trying to reach a pre-trial settlement, presuming that the carrier agreed with that prospect, which it did.
Dr. P frankly said to her attorney that, in multiple continuing education classes she had taken, the need for pre-implant CBCT studies was discussed, for the very reasons highlighted in O’s treatment; she further acknowledged that she would have to testify to that experience if asked at trial. Dr. P was concerned, so she authorized attempts to resolve the case. Because O’s injuries were viewed, even by his own lawyer, as not severe, evidenced in part by O having never sought subsequent evaluations or care other than at the direction of his attorney, a modest settlement was reached.
Takeaways
It is the rule, and not the exception, that experts for plaintiffs and defendants will disagree, and that is also the case for dentists as a whole, outside of the litigation realm. Those disagreements take center stage during dental malpractice trials, with jurors left to determine which of the opposing positions they accept. As Dr. P reasoned here, it is rarely, if ever, simply a coin flip, because a host of factors play into jury determinations, so the pre-trial “prediction calculus” takes into account a common-sense approach as to how lay people will most likely come to their conclusions on matters of science and professional expertise. Sometimes demeanors of the parties and/or experts carry the day; sometimes the bases of expert opinions are determinative; and sometimes, as might play here, particular professional experiences in the dentist’s past are of significance. While legitimate (not fabricated) differences of expert conclusions generally preclude dismissal before trial by way of motions, those differences will need to be resolved by a trial jury. There is no getting around that.
This case study briefly touches on the concept of statute of limitations (SOL), so a short description is in order. The SOL is the time following a claimed negligent event (or sometimes the subsequent discovery of that event) within which a plaintiff must file suit, or be forever time-barred. Of course, as with so many issues in the law, there are nuances and issues that can serve to lengthen the allowable timeframe, but they are exceptions, with the statutory SOL generally being the bedrock. The concept of SOL is perhaps the most variable legal issue as between the States – or at least close to the top of the list – but it is a consideration for attorneys (or self-represented plaintiffs) to grapple with, and not something with which dentists need to familiarize themselves.
As the body of this case study references, divergent views exist within dentistry as to what radiographic techniques are “best” for various planned procedures or diagnostic approaches, which in the litigation arena often translates to opinions as to the standard of care. Articles in respected journals present competing ideas. Some take the approach that dentists are in the most ideal position to make patient-based, procedure-based, and circumstance-based decisions as to which radiographic techniques – whether CBCT, panoramic, periapical, etc. – are most appropriate clinically; others are more rigid, asserting, for example, that nearly all invasive dental/oral surgical procedures require CBCT studies in advance. While we do not advocate here in either direction, dentists and oral surgeons ought to be aware of these opposing schools of thought and consider them in decision-making, realizing that jurors might get the final say.
We end on a note about the decision faced by Dr. P. Given that she had a “consent-to-settle” policy, it was her right to refuse any type of settlement, regardless of the input or advice of her counsel or insurer. Had she not had such a policy, that decision would not have been hers to make. This is yet another issue for dentists to consider when choosing a malpractice carrier and policy.
Note that this case presentation includes circumstances from several different closed cases, in order to demonstrate certain legal and risk management principles, and that identifying facts and personal characteristics were modified to protect identities. The content within is not the original work of MedPro Group but has been published with consent of the author. Nothing contained in this article should be construed as legal, medical, or dental advice. Because the facts applicable to your situation may vary, or the laws applicable in your jurisdiction may differ, please contact your personal or business attorney or other professional advisors if you have any questions related to your legal or medical obligations or rights, state or federal laws, contract interpretation, or other legal questions.
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This document does not constitute legal or medical advice and should not be construed as rules or establishing a standard of care. Because the facts applicable to your situation may vary, or the laws applicable in your jurisdiction may differ, please contact your attorney or other professional advisors if you have any questions related to your legal or medical obligations or rights, state or federal laws, contract interpretation, or other legal questions.
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