Cavity Preparation for Cast Metal Onlay No 275

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Cavity Preparation for Cast Metal Onlay

Cavity Preparation for Cast Metal Onlay

¥ No. 275 bur ¥ Depth 1. 5 mm의 depth gauge groove ¥ 삼각

¥ No. 275 bur ¥ Depth 1. 5 mm의 depth gauge groove ¥ 삼각 융선의 정상과 협설측 groove 부위 에 형성

¥ Occlusal step : Central groove 부위에 0. 5 mm 깊이 의 occlusal step

¥ Occlusal step : Central groove 부위에 0. 5 mm 깊이 의 occlusal step 형성 ¥ Proximal box의 형성 : 인접치와의 간격 확보

Skirt preparation ¥ Skirt are thin extensions of the facial or lingual proximal margins

Skirt preparation ¥ Skirt are thin extensions of the facial or lingual proximal margins of the cast metal onlay that extend from the secondary flare to a termination just past the transitional line of the tooth.