Asymptomatic tooth survival as an incomplete marker of pulpal health: A perspective on evidence hierarchies in deep caries management

Background: Contemporary deep and extremely deep caries management increasingly favors selective or stepwise excavation because these strategies reduce pulpal exposure and preserve tooth structure. However, clinical survival is often interpreted beyond its biological meaning. Objective: This perspective examines why asymptomatic tooth survival, retained sensibility, absence of radiographic disease, and lack of retreatment are incomplete markers of pulpal health. Evidence synthesis: Randomized clinical trials are essential for comparing caries removal strategies and estimating outcomes such as exposure, pain, restoration failure, retreatment, and tooth loss. These endpoints have clinical and patient-centered value. However, they do not directly measure residual bacterial viability, inflammatory status, vascular vitality, focal necrosis, pulp stem cell function, or true tissue healing. Histopathological, histobacteriological, microbiological, biomarker, and imaging evidence indicate that clinically silent teeth may still contain bacterial penetration, chronic inflammation, altered cellular phenotype, and reduced repair capacity. Selective excavation should therefore be viewed as a toothpreserving intervention with variable biological meaning instead of direct proof of pulpal recovery. The paper also reframes pulp exposure as more than a procedural complication. In selected cases, exposure may disclose tissue status through bleeding quality, hemostasis, tissue color, and necrotic changes, thereby informing vital pulp therapy. Conclusions: Pulp conservation requires an evidence model that separates clinical success, diagnostic stability, biological recovery, and long-term disease control. Randomized trials should be interpreted along with tissue-level, mechanism-level, diagnostic, patient-reported, economic, and long-term outcomes. Lesion depth, restoration quality, and study settings also matter. The goal of deep caries management should be survival with health, not survival alone.