Guidance Before Reading
Critical Axes and Publication Limitations
- Article Type: Intervention. The topic is organized across five decision axes rather than a single global judgment.
- Evidence Basis: Strong / Strong / Fully Rated. 7 studies, of which 6 are green, 1 is yellow. 2 Cochrane Reviews, 1 Network Meta-analysis, 1 Umbrella Review, 1 IAPD Guideline, 1 RCT.
- Bias Risk: Low to moderate. CoI Risk: low. Source Integrity: clean.
- All core claims are based on at least 3 independent sources. No single-study claim in the main text.
Clinical Question
When is selective caries removal indicated in deep lesions, what are its limits, and what role do lesion depth, dentition, and restoration quality play in clinical success?
Executive Summary
The evidence for selective caries removal in deep lesions is strong and consistently supported by several high-level systematic reviews. DDJ does not read this topic as a simple yes/no regarding selective excavation, but rather organizes the decision along five clinical axes: lesion depth and extent of excavation, one-time vs. staged strategy, pulp management in borderline cases, differentiation by dentition, and restoration quality as an independent factor of success.
The trend consistently points toward a clinical benefit of selective removal—as long as a dentin barrier to the pulp is maintained. The transition to the conventional protocol with complete excavation and vital pulp management occurs where this barrier is absent. In both scenarios, the quality of the definitive restoration is a crucial mediator.
The aggregated bias risk is low to moderate. The corpus includes two Cochrane Reviews [1, 4], a current Network Meta-analysis with Trial-Sequential-Analysis [7], an Umbrella Review for deciduous teeth [5], an international consensus guideline [6], and an exploratory RCT [3]. The yellow rating pertains to an older review with a narrower search scope [2].
How DDJ Interprets This Topic
The main tension is not between functioning and non-functioning, but between a minimally invasive approach and the necessity of switching to the conventional protocol with pulp exposure when a dentin barrier is missing. The decision is dependent on lesion depth and dentition—not determined solely by the label "deep caries."
DDJ treats this topic as an intervention article. This means: First, the five sub-axes are organized, and then a differentiated clinical interpretation is built from them. Clinical questions, conflict zones, and consequences are visible.
Claim Clusters and Decision Axes
Claim-Cluster 1 — ddj_0026_c01
Selective vs. Complete Caries Removal: Pulp Exposure Risk
Clinical Question: Does selective caries removal reduce the risk of pulp exposure compared to complete excavation?
Why this question matters: Avoiding iatrogenic pulp exposure is a key clinical decision factor for deep lesions in vital teeth. Every unnecessary exposure increases the risk of a vitality loss cascade.
Evidence Status: For deep caries lesions in vital teeth without signs of irreversible pulpitis, selective caries removal significantly reduces the risk of iatrogenic pulp exposure compared to complete excavation. The Cochrane Network Meta-analysis from 2021 shows that Complete Removal (CR) has the highest probability for pulp exposure—ranking last [4]. Ramezanzade's 2026 network meta-analysis consistently quantifies the relative risk of pulp exposure for selective versus non-selective removal with a heterogeneity of I²=0 %. [7] BaniHani's 2022 Umbrella Review confirms that selective removal reduces the risk of exposure by about three-quarters. [5] Even the early Cochrane Review from 2006 documented the signal for partial caries removal. [1]
Where the evidence is stable: For vital teeth with deep caries and an intact dentin barrier to the pulp, selective removal is the demonstrably more pulp-sparing approach.
Where uncertainty begins: For extremely deep lesions without a radiographically visible dentin barrier, the selective strategy is no longer indicated; a different protocol applies (see Cluster 3).
Clinical Implication: For deep lesions with an intact dentin barrier, selective caries removal is the evidence-based standard of care. Complete excavation down to hard dentin in pulp-adjacent areas is no longer appropriate under these conditions.
Claim-Cluster 2 — ddj_0026_c02
One-Time Selective Excavation vs. Stepwise Excavation
Clinical Question: Does stepwise excavation (SW) still offer a relevant advantage over one-time selective removal (SCR)?