# Why do most dental transition signals not lead to a sale? Most single public-record events that look like a coming sale have ordinary explanations, because sales are rare next to the license, entity, address and permit records that change every year across 205,088 professionally active U.S. dentists ([ADA Health Policy Institute](https://ddsintel.com/data)). A [dental transition signal](https://ddsintel.com/signals) raises the odds of a change of owner; it does not predict one. By DDSIntel Editorial Team. Source: DDSIntel, https://ddsintel.com/signals/signal-is-not-a-sale. Published 2026-10-26; data as of 2026-10-16. ## Key numbers - **205,088** professionally active U.S. dentists (ADA Health Policy Institute, 2025; https://www.ada.org/resources/research/health-policy-institute/dentist-workforce) - **18.6%** of professionally active U.S. dentists were 55 to 64 (ADA Health Policy Institute, 2025; https://www.ada.org/resources/research/health-policy-institute/dentist-workforce) - **15.2%** of professionally active U.S. dentists were 65 or older (ADA Health Policy Institute, 2025; https://www.ada.org/resources/research/health-policy-institute/dentist-workforce) - **68.7** was the average age at which U.S. dentists retired (ADA Health Policy Institute, 2024; https://www.ada.org/resources/research/health-policy-institute/dentist-workforce) ## What is a false positive in transition signals? A false positive is a signal that suggests a likely ownership change but is not followed by one within 18 months. It is not a data error: the record is real, but its meaning was not a sale. The opposite error, a false negative, is a practice that changes hands with no prior signal. ## Why are false positives so common? Two reasons: base rates and ordinary explanations. Sales are rare in any month compared with the number of records that change, so even a fairly reliable indicator flags many practices that do not sell. Relocations, routine entity cleanups, renovations and clerical license lapses leave the same records a sale would. ## Why does age not reduce false positives? Age makes false positives worse. In 2025, 18.6% of U.S. dentists were 55 to 64 and 15.2% were 65 or older, many of them associates with no practice to sell, and the average dentist did not retire until 68.7. Age flags owners years before most of them act. ## How are false positives reduced? Three controls apply. A record counts only after a second, independent source confirms it. Signals are weighed in combination across families, because two unrelated events close together rarely share one ordinary explanation. Every signal used in an index is reviewed by a person, and consented signals are kept apart from observed ones. DDSIntel never publishes a list of practices likely to sell. Timing is covered in [signals and listings](https://ddsintel.com/signals/signals-vs-listings), and each family in the [five signal families](https://ddsintel.com/signals/five-signal-families); the most sensitive family is [compliance signals](https://ddsintel.com/signals/compliance-signals). ## Frequently asked questions ### Why do most transition signals not lead to a sale? Sales are rare compared with the number of public records that change, and most record changes have routine explanations. ### What is second-source confirmation? A rule that a record counts as a signal only when an independent public source confirms the same event. ### Does DDSIntel publish lists of practices likely to sell? No. Public pages show aggregate counts only. ### Should outreach follow a single signal? A signal is a reason to look closer, not a conclusion. Owners decide whether to be contacted; see [for practice owners](https://ddsintel.com/owners). ## Sources 1. ADA Health Policy Institute. The dentist workforce. https://www.ada.org/resources/research/health-policy-institute/dentist-workforce 2. ADA Health Policy Institute. The U.S. Dentist Workforce, 2025 update. https://www.ada.org/-/media/project/ada-organization/ada/ada-org/files/resources/research/hpi/US_dentist_workforce_2025.pdf --- DDSIntel is a dental transition intelligence platform that detects pre-market dental practice transition signals for brokers, DSOs, lenders and the firms that serve them.