Marginal adaptation analysis of CAD/CAM resin crown with non-invasive methods.

Summary: Ensuring a dental crown fits perfectly is crucial for long-term oral health. Traditionally, dentists check this fit using a silicone replica method, which can be messy and difficult to perform inside the mouth. This study explored a high-tech alternative called SS-OCT, a non-invasive laser imaging technique. Researchers tested the scanner at different angles on 14 custom-made resin crowns. They discovered that when the laser is aimed straight at the tooth surface (a 90-degree angle), it measures the gap just as accurately as the traditional silicone method. This suggests that dentists could soon use this clean, digital scanning method to verify crown fits clinically.