Adjacent No damage Slight Significant Gross Tooth Damage Guidelines for Class II Amalgam Cavity Restoration Accepted Accepted Accepted Unaccepted Guidelines 9 10 7.5 8.5 6.5 7 Below 6 – – – Interface between Over-contoured Restoration short of Open margins tooth and margins, but still margin, but still Margins restoration not closed closed detectable with explorer Proper intensity and In proper contact, Light occlusal Restoration is location of occlusal but inappropriate contact high/completely out Occlusion contacts location of occlusion Restoration Slight deviation Significant No resemblance to duplicates tooth from ideal anatomy deviation from ideal tooth structure Anatomy anatomy anatomy Proper contact/ Tight interproximal Light interproximal No interproximal Interproximal Contact and contour restored contact contact; poor contact with adjacent tooth contour Contour Burnished and Slight roughness Rough; some pits; Grossly rough smooth; no voids, voids Finish pits, or roughness
Adjacent Tooth Damage No damage Slight Significant Gross Guidelines for Class II Amalgam Cavity Restoration Guidelines Accepted 9 – 10 Accepted 7.5 – 8.5 Accepted 6.5 – 7 Unaccepted Below 6 Margins Interface between tooth and restoration not detectable with explorer Over-contoured margins, but still closed Restoration short of margin, but still closed Open margins Occlusion Proper intensity and location of occlusal contacts In proper contact, but inappropriate location Light occlusal contact Restoration is high/completely out of occlusion Anatomy Restoration duplicates tooth anatomy Slight deviation from ideal anatomy Significant deviation from ideal anatomy No resemblance to tooth structure Interproximal Contact and Contour Proper contact/ contour restored with adjacent tooth Tight interproximal contact Light interproximal contact; poor contour No interproximal contact Finish Burnished and smooth; no voids, pits, or roughness Slight roughness Rough; some pits; voids Grossly rough