Every clinical relationship rests on an assumption of honesty: that findings are real, recommendations are earned, and the patient can trust both without reservation. Truthfulness is not one value competing among others in health care; it is the bedrock layer beneath every other obligation. When that layer shifts, the damage does not stay contained to a single encounter. It propagates outward, weakening the entire structure of professional trust that makes care possible.¹ 

Diagnosis as the bedrock 

Diagnosis is meant to be an observation translated into judgment: a clinician naming what exists, not what is convenient or profitable to name.² Its purpose is the accurate characterization of a condition, its process is disciplined clinical reasoning, and its product is something the patient cannot independently verify. That dependency is what gives diagnosis its ethical weight. Patients extend trust not from naivety but from necessity; they cannot reexamine their own radiographs or second-guess a probing depth. That asymmetry is precisely why diagnosis functions as a fiduciary act rather than a transaction.^1,2 

Diagnosis versus treatment planning 

Diagnosis and treatment planning are distinct tectonic layers, and conflating them is where cracks begin to form. Diagnosis characterizes disease or conditions; treatment planning responds to them.² The ethical question, for hygienists and dentists, is whether the two align.^1,2 

If a patient has periodontal disease with attachment loss, the plan should reflect nonsurgical periodontal therapy and perio maintenance, not quietly defaulting to a prophylaxis because that is what the schedule, the practice culture, or the patient’s expectations demand.^3,4 Conversely, a patient with heavy calculus and inflammation but no bone or attachment loss does not meet the threshold for scaling and root planing; the correct, evidence-based response is scaling with inflammation management, not an inflated procedure code.^3,4 

When the diagnosis and the treatment plan stop matching, something other than clinical evidence is doing the deciding. Financial incentives and fear of difficult conversations are often what fill that gap.^5,6 

Veracity as the structural load 

Professional codes of ethics are explicit about the duty of veracity, and that duty is not aspirational language; it is a load-bearing requirement with consequences for licensure and liability.¹ Documentation integrity extends that duty into the record itself: a chart edited to justify a code after the fact is not documentation—it is fabrication.^7,8 Transparency with patients means disclosing findings, rationale, and alternatives in full—not selectively, not strategically, and not only when convenient.^1,9 

Diagnostic distortion: Pressure from below 

Diagnostic distortion happens when a diagnosis is altered beyond what the clinical evidence supports, whether to avoid an uncomfortable conversation or to reach a higher reimbursement tier.^5,6 Disease can be downplayed or erased to sidestep difficult conversations, or mild conditions can be exaggerated to justify higher-fee procedures. In both directions, the patient is moved outside evidence-based standards of care, not by clinical necessity but by nonclinical pressures.^5,6,10 

This pressure surfaces elsewhere in dentistry, too. Fluoride varnish applied to every patient regardless of documented caries risk overstates its benefit for low-risk individuals.¹¹ Chlorhexidine irrigation used routinely after scaling and root planing persists despite peer-reviewed studies showing it inhibits fibroblast attachment and can interfere with periodontal regeneration.^12,13

Locally delivered minocycline microspheres placed at every eligible site, without first determining whether nonsurgical therapy alone is sufficient, reflect the same pattern of reaching for the more billable intervention before the more conservative one has been tried. Although locally delivered antimicrobials may provide clinical benefit as adjunctive periodontal therapy, their indiscriminate use also raises concerns about antibiotic stewardship, which calls for antimicrobial exposure to be judicious, targeted, and clinically justified.^14,15 

The common thread is not a lack of clinical knowledge; it is a willingness to let revenue, habit, or convenience overrule evidence.^1,5,6 

A practical fault-test 

When self-doubt arises, one question cuts through most of the ambiguity: if no compensation were tied to this recommendation, would it still be the right one? 

If the honest answer is no, the recommendation was never built on clinical ground to begin with. That moment of recognition is not a theoretical exercise; it is a fault-test for integrity. It reveals whether the tectonic plates of evidence and economics still sit in alignment, or whether they have begun to slip.^1,6 

Fractures in the record 

The fractures of diagnostic distortion rarely begin with a single decision. They become visible in the record itself, through charting, coding, and documentation.7 Charting practices can involve selectively recording findings, omitting readings that would undercut a proposed diagnosis, or documenting probe depths that were never taken. Coding practices range from defensible aggressive billing to outright fraud. This can include billing for a service that was not rendered or that does not meet the code’s definition.⁷ The line separating these behaviors is often blurrier in practice than in regulation. Documentation concerns include after-the-fact alterations, additions, or deletions not properly flagged as amendments, with particularly convenient timing around audits, complaints, or payer reviews.⁸ 

These fractures seldom originate from an individual’s dishonesty alone. They are often the output of production systems.^5,10 Daily revenue targets and per-provider quotas create environments where hygiene departments function as prophylaxis mills, pushing volume regardless of periodontal status. Dentists under similar pressure may favor restorative treatment over nonsurgical alternatives without first offering the more conservative option.^5,10,16

In such systems, it is not the written policy that drives behavior. It is the unspoken message that revenue matters more than integrity.1,5 

Where the ground shifts: Financial incentives 

Conflicts of interest are structural whenever a clinician’s income is tied directly to the diagnostic conclusions reached.^1,5 Overtreatment follows when a covered benefit or ancillary service drives recommendations and care is expanded beyond what the diagnosis and supported interventions truly require, prioritizing revenue over treating disease.^5,6,10 

Defensive diagnosis—overdocumenting severity to protect against future liability—is a subtler variant of the same distortion. It replaces an honest description of present findings with a hedge against imagined future blame. Both patterns reshape diagnosis around the clinician’s needs rather than the patient’s reality.^1,9 

Left unmanaged, revenue-driven recommendations displace clinical judgment as the true basis for care. At that point, the chart may still give the appearance of legitimacy, but the real diagnosis has shifted: the practice is treating its own financial anxiety more faithfully than it is treating disease.^5,10

Where trust cracks the surface 

Trust forms through complete, unbiased disclosure,1,9 and it fractures the moment a patient discovers a diagnosis was distorted or a record misrepresented their condition. That damage is rarely only financial; it is a breach of the basic premise that a health -care provider will tell the truth even when the truth is inconvenient.^1,9 

Informed consent obtained on inflated or manipulated findings is not valid consent. No signature, no initial next to a paragraph, repairs that.9 Consent presumes accurate information; without it, the patient did not agree to the real situation, only to the version they were shown.^9,17 

For dental professionals, this is not an abstract legal concern. It is a question of whether patients can trust that the words “you need” in a treatment conversation mean “your condition requires,” not “our ledger benefits.”^1,9

When the fault finally slips 

Rupture rarely arrives as a single dramatic decision. It accumulates in small increments: a probe depth adjusted to justify a code, a diagnosis nudged upward to meet a quota, a treatment recommended because the fee justifies it rather than the patient’s condition.^5,6,10 Each compromise seems minor in isolation. Together, they represent the moment truth becomes negotiable.¹ 

Once a practice culture accepts that premise—that the facts of diagnosis are malleable in service of production—no compliance policy restores what has already slipped. Training modules, new documentation protocols, and scripted consent conversations are applied like veneers over a cracked foundation.^1,7,8 

Repair does not begin with better wording in the chart; it begins with a recommitment to the bedrock assumption that diagnosis is a professional act rooted in evidence, and that the patient’s trust is the structure the entire profession stands on.^1,2 

Author’s note: Part 4 will examine the “aftershock effects” of systemic ethical failures in dentistry, showing how insurance-driven clinical decisions and restrictions on preventive care contribute to access gaps, workforce instability, and professional moral distress. It connects these pressures to broader public health consequences, including delayed treatment, disease progression, rising costs, and widening disparities. 

Editor's note: This article appeared in the October 2026 print edition of RDH magazine. Dental hygienists in North America are eligible for a complimentary print subscription. Sign up here.

References 

1. American Dental Hygienists’ Association. Code of Ethics for Dental Hygienists. 2024. https://www.ada.org/about/principles/code-of-ethics  

2. Swigart DJ, Gurenlian JR, Rogo EJ. Dental hygiene diagnosis: a qualitative descriptive study of dental hygienists. Can J Dent Hyg. 2020;54(3):113-123. 

3. Papapanou PN, Sanz M, Buduneli N, et al. Periodontitis: consensus report of Workgroup 2 of the 2017 World Workshop. J Clin Periodontol. 2018;45(suppl 20):S162-S170. 

4. Sanz M, Herrera D, Kebschull M, et al. Treatment of stage I-III periodontitis-the EFP S3 level clinical practice guideline. J Clin Periodontol. 2020;47(suppl 22):4-60.

5. Brocklehurst P, Price J, Glenny AM, et al. The effect of different methods of remuneration on the behaviour of primary care dentists. Cochrane Database Syst Rev. 2013;(11):CD009853. 

6. Kazemian A, Berg I, Finkel C, et al. How much dentists are ethically concerned about overtreatment: a vignette-based survey in Switzerland. BMC Med Ethics. 2015;16:43. 

7. Thierer TE, Delander KA. Improving documentation, compliance, and approvals in an electronic dental record at a U.S. dental school. J Dent Educ. 2017;81(4):442-449. 

8. Amendments, corrections and delayed entries in medical documentation. CMS Transmittal 442. 2012. 

9. Reid KI. Informed consent in dentistry. J Law Med Ethics. 2017;45(1):77-94. 

10. Edvinsen JS, Hofmann B. Private practice dentists’ conceptions of overtreatment: a qualitative study from Norway. Acta Odontol Scand. 2024;83:611-615. 

11. Weyant RJ, Tracy SL, Anselmo T, et al. Topical fluoride for caries prevention. J Am Dent Assoc. 2013;144(11):1279-1291. 

12. Alleyn CD, O’Neal RB, Strong SL, et al. The effect of chlorhexidine treatment of root surfaces on the attachment of human gingival fibroblasts in vitro. J Periodontol. 1991;62(7):434-438. 

13. Wyganowska-Świątkowska M, Kotwicka M, Urbaniak P, et al. Clinical implications of the growth-suppressive effects of chlorhexidine at low and high concentrations on human gingival fibroblasts. Int J Mol Med. 2016;37(6):1594-1600. 

14. Teles RFF, Lynch MC, Patel M, Torresyap G, Martin L. Bacterial resistance to minocycline after adjunctive minocycline microspheres during periodontal maintenance: a randomized clinical trial. J Periodontol. 2021;92(9):1222-1231. doi:10.1002/JPER.17-0565.  

15. Herrera D, Matesanz P, Martín C, Oud V, Feres M, Teughels W. Adjunctive effect of locally delivered antimicrobials in periodontitis therapy: a systematic review and meta-analysis. J Clin Periodontol. 2020;47(Suppl 22):239-256. doi:10.1111/jcpe.13230. 

16. Moreno T, Sanz JL, Melo M, Llena C. Overtreatment in restorative dentistry: decision making by last-year dental students. Int J Environ Res Public Health. 2021;18(23):12585. 

17. Kakar H, Gambhir RS, Singh S, Kaur A, Nanda T. Informed consent: cornerstone in ethical medical and dental practice. J Family Med Prim Care. 2014;3(1):68-71.