Research Article
A Retrospective Clinical Study on Factors Influencing the Failure of NCCL Restorations
Table 1
Key parameters determining the overall clinical success rate using modified USPHS criteria.
| | Retention | A | Good retention | | B | Partially dislodged restoration | | C | Totally dislodged restoration |
| | Caries | A | No caries present | | C | Caries present |
| | Marginal discoloration | A | No discoloration | | B | Discoloration without axial penetration, can be removed by polishing | | C | Discoloration with penetration in the pulpal direction, cannot be removed by polishing |
| | Marginal integrity | A | The restoration appeared to adapt closely to the tooth along the periphery of restoration. An explorer does not catch when drawn across the margin | | B | Explorer penetrates, edge of the restoration does not adapt closely to the tooth structure, and dentin is not exposed | | C | Explorer penetrates the crevice, in which dentin is exposed |
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A = Alfa, B = Bravo, C = Charlie.
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