Four Signals: Qualitative Analysis of Patient Complaints

According to PLOS One, a qualitative meta-synthesis published on November 12, 2026, patient complaints in dentistry clustered into four connected domains: impeded access, unsatisfactory communication and attitudes, deficient clinical treatment, and unethical or unprofessional conduct.

The study shows that qualitative analysis of patient complaints can reveal threats to trust, patient agency, relational security, and professional accountability that complaint-frequency data alone may miss.

• The authors screened 857 studies and included 19 studies in the synthesis, according to the study published on November 12, 2026.
• The study found deficient clinical treatment in 100% of the 19 included studies, according to the November 12, 2026 PLOS One results.
• The study found unethical and unprofessional conduct in 89% of the included studies, or 17 of 19 studies, according to the November 12, 2026 meta-summary.
• The researchers searched MEDLINE, PsycINFO, PubMed, Scopus, Web of Science, and CINAHL in September 2024 and updated the search on August 26, 2026.
• A patient quoted in the study described access problems as follows: “you never get through… I tried to make an appointment, phone kept ringing out.”

The 2026 PLOS One study used a qualitative meta-synthesis to interpret patient complaints across different dental settings, complaint sources, and countries. Lorraine Snyman, Thomas Corne Postma, and Werdie Van Staden followed Sandelowski and Barroso's six-step synthesis approach, used reflexive thematic analysis, and reported the review according to PRISMA guidance.

The researchers treated findings from 19 included studies as a higher-order case. The included evidence covered regulatory complaints, litigation and malpractice claims, online reviews, and mixed-method studies with separable qualitative findings.

The authors identified four interrelated domains. Impeded access included appointment availability, waiting times, inaccessible premises, and treatment costs. Unsatisfactory communication and attitudes included poor explanations, technical language, inadequate listening, weak empathy, and rude treatment. Deficient clinical treatment included poor outcomes, pain, inadequate aftercare, and safety concerns. Unethical and unprofessional conduct included inadequate consent, dishonesty, negligence, discrimination, fraud, and failures of accountability.

A patient quoted in the November 12, 2026 study summarized a communication failure this way: “the sort of person who got you into the surgery, said ‘Hi’, got the drill out and started almost straightaway.”

The researchers concluded that complaints may indicate breakdowns in the fiduciary patient-practitioner relationship and may provide insight into the relational and systemic conditions required for trustworthy, person-centered dental care.

Healthcare researchers should analyze dental complaints as multidimensional patient-experience evidence rather than treating each complaint as an isolated event. The November 12, 2026 study connects access problems with organizational responsiveness, communication problems with patient agency, treatment problems with perceived competence, and unethical conduct with trust and integrity.

Dental quality teams should combine complaint frequencies with narrative analysis. Counts can show how often a category appears, while qualitative coding can explain whether a complaint reflects waiting, financial pressure, unclear consent, fear, inadequate aftercare, perceived negligence, or a broader loss of trust.

Researchers should preserve context when analyzing complaints across segments. The study found deficient clinical treatment across online, regulatory, and litigation-related sources, while the absence of access complaints in the litigation subgroup may reflect the legal framing of those complaints rather than the absence of access concerns.

The study also sets an important boundary: the 19-study synthesis provides an interpretive account of meanings across qualitative evidence, not population-level estimates of how common each complaint is. Healthcare teams should therefore use the four domains to guide investigation and improvement, not as diagnostic or prevalence measures.

The November 12, 2026 PLOS One meta-synthesis shows that dental complaints are not only records of dissatisfaction; they are qualitative evidence about access, communication, clinical quality, safety, professionalism, and trust.

For healthcare researchers and dental quality teams, the practical opportunity is to combine structured coding with close reading of patient language. AI-enabled qualitative research can make that process faster across large collections of complaints while keeping human researchers responsible for context and judgment.

Teams analyzing patient complaints, open-ended surveys, interviews, or reviews can explore Evidano's qualitative research platform and try Evidano for free.