GUIDELINES & PRACTICAL PROJECTS Guidelines & Evaluation for Rubber Dam Placement Accepted 9 – 10 Accepted 7.5 – 8.5 Accepted 6.5 – 7 Unaccepted Below 6 Proper placement; no leaks, tear Proper inversion Frame properly placed Dam not properly inverted around some teeth Improperly placed Dam not properly inverted all teeth Possibility of leakage Dam is torn Too few teeth included Introduction to Instrumentation and Rubber Dam Application Practical Exercise Date Comments Self-Evaluation
Rubber Dam Application (lower) Rubber Dam Application (upper) Cutting on Plastic Teeth H Shaped Preparation Cutting on Plastic Teeth I Shaped Preparation Guidelines for Class I Amalgam Cavity Preparation Guidelines Accepted 9 – 10 Accepted 7.5 – 8.5 Accepted 6.5 – 7 Unaccepted Below 6 Occlusal Extensions Follow central /Bu /Li grooves precisely Slight deviation from grooves Deviation from grooves Does not follow grooves Outline Smooth curve Slight sharp Markedly sharp Lack of a curve Width ¼ intercuspal Slightly <; > ¼ intercuspal 1/3 intercuspal Greater than 1/3 intercuspal Margins Smooth, regular 90 to unprepared tooth structure Slight roughness; small areas where margins not 90 Significant roughness Beveled margins
Walls Smooth, slight convergence B; L walls Slightly divergent M, D Slight roughness Rough; wall not properly aligned Divergent Bu; Li walls Line Angles Rounded line angles; axio-pulpal line angle rounded Some sharp internal line angles; line angle still rounded Most internal line angles are sharp All internal line angles sharp Guidelines for Class I Amalgam 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 Finish Burnished and smooth; no voids, pits, or roughness Slight roughness Rough; some pits; voids Grossly rough
Guidelines for Class II Amalgam Cavity Preparation Guidelines Accepted 9 – 10 Accepted 7.5 – 8.5 Accepted 6.5 – 7 Unaccepted Below 6 Occlusal Extensions Follow central/ Bu/Li grooves precisely Slight deviation from grooves Significant deviation from grooves Does not follow grooves Outline Smooth curve Slight sharp Markedly sharp Lack of a curve Width ¼ intercuspal Slightly <; > ¼ intercuspal 1/3 intercuspal Greater than 1/3 intercuspal Margins Smooth, regular 90° to unprepared tooth structure Slight roughness; small areas where margins not 90° Significant roughness Beveled margins Walls Smooth, slight convergence B; L walls Slightly divergent M, D Slight roughness Rough; wall not properly aligned Divergent Bu; Li walls Line Angles Rounded line angles; axio-pulpal line angle rounded Some sharp internal line angles; line angle still rounded Most internal line angles are sharp All internal line angles sharp Preparation Depth 2.5mm from external walls >2.5mm, <2.5mm >3.0mm; <2.0mm >3.5mm; <1.5mm Proximal Extensions Bu gingival contact broken by line of explorer; Li contact broken by no more than 1mm Contact broken slightly more than line of explorer Bu; gingival Tooth still in contact with adjacent tooth Bu; Li; gingival contact broken by over 1mm Proximal Box Form Follows curvature to tooth; gingival floor 1mm wide; proper box form Gingival floor slightly greater/less than 1mm wide Does not follow curvature of tooth Gingival floor greater than 2mm wide
Amalgam Cavity Preparations and Restorations Teeth No. Practical Exercise Date Comments 46 Occlusal Class I Amalgam Cavity Prep. 46 Buccal Pit Cavity Prep. 24 Occlusal Class I Amalgam Cavity Prep. 44 Occlusal Class I Amalgam Cavity Prep. Class I Buccal Pit 46 Occlusal Class I Amalgam Restoration and Buccal Pit 24 Occlusal Class I Amalgam Rest.
Teeth No. Practical Exercise Date Comments 44 Occlusal Class I Amalgam Rest. 36 [OM Class II] Amalgam Cavity Preparation 15 [OM Class II] Amalgam Cavity Preparation 45 [MOD Class II] Amalgam Cavity Preparation 16 [OM Class II] Amalgam Cavity Preparation 16 [OL Class II] Amalgam Cavity Preparation
Teeth No. Practical Exercise Date Comments 36 [OM Class II] Amalgam Restoration 15 [OM Class II] Amalgam Restoration 45 [MOD Class II] Amalgam Restoration 16 [OM Class II] Amalgam Restoration 16 [OL Class II] Amalgam Restoration Natural Tooth Class II Amalgam Preparation Natural Tooth Class Amalgam Restoration
Amalgam Restorations Finishing and Polishing Teeth No. Practical Exercise Date Comments 46 Finishing and Polishing of Amalgam Restoration Class I 46 Finishing and Polishing of Amalgam Restoration Buccal Pit 24 Finishing and Polishing of Amalgam Restoration Class I 44 Finishing and Polishing of Amalgam Restoration Class I 36 Finishing and Polishing of Amalgam Restoration Class II 15 Finishing and Polishing of Amalgam Restoration Class II 45 Finishing and Polishing of Amalgam Restoration Class II 16 Finishing and Polishing of Amalgam Restoration Class II 16 Finishing and Polishing of Amalgam Restoration Class II
Direct Tooth-Colored Cavity Preparations and Restorations Teeth No. Practical Exercise Date Comments 11 [ Mesial Class III Lingual Approach] Composite Resin Cavity Preparation Natural Tooth [ Mesial Class III Facial Approach] Composite Resin Cavity Preparation 11 Class III Composite Resin Restoration Natural Tooth Class III Composite Resin Restoration 21 [Distal Class IV caries] Composite Resin Cavity Preparation
Teeth No. Practical Exercise Date Comments 21 [Mesial Class IV traumatic] Composite Resin Cavity Preparation. 21 Distal Class IV Composite Resin Restoration 21 Mesial Class IV Composite Resin Restoration 13 Facial Class V Composite Resin/GIC Cavity Preparation 13 Class V Composite Resin/GIC Restoration Closed Sandwich Technique 15 Facial Class V Cavity Preparation for Glass Ionomer
Guidelines for Pin-Retained Amalgam Preparation and Restoration Guidelines Accepted 9 – 10 Accepted 7.5 – 8.5 Accepted 6.5 – 7 Unaccepted Below 6 Occlusal Extensions Follows central/ Bu/Li grooves precisely Slightly deviation from grooves Significant deviation from grooves Does not follow grooves Outline Smooth curve Slightly sharp Markedly sharp Lack of a curve Width ¼ intercuspal Slightly <; > ¼ intercuspal 1/3 intercuspal Greater than 1/3 intercuspal Proximal Extensions Bu; gingival contact broken by line of explorer; Li contact broken by no more than 1mm Contact broken slightly more than line of explorer Bu; gingival Tooth still in contact with adjacent tooth Bu; Li; gingival contact broken by over 1mm Margins Smooth, regular 90° to unprepared tooth structure Slight roughness; small areas where margins not 90° Significant roughness Beveled margins Walls Smooth, slight convergence Bu; Li walls Slight roughness Rough; parallel walls Divegent Bu; Li walls Line Angles Rounded line angles; axio-pulpal line angle rounded Some sharp internal line angles; line angle still rounded Most internal line angles are sharp All internal line angles sharp Preparation Depth 2.5mm from external walls >2.5mm; <2.5mm >3.0mm; <2.0mm >3.5mm; <1.5mm Proximal Box Form Follows curvature of tooth; gingival floor 1mm wide; proper box form Gingival floor slightly greater/ less than 1mm wide Does not follow curvature of tooth Gingival floor greater than 2mm wide Pin Placement Pin properly placed Pin too far pulpally Pin placed too close to external tooth surface; incorrect angulation Pin in pulp; fractured external tooth structure; pin not present Adjacent Tooth Damage No damage Slightly Significant Gross
Inlay and Onlay Teeth Preparations Teeth No. Practical Exercise Date Comments 46 [MOD Inlay Preparation ] for Cast Gold Alloy Restoration 46 [MOD Onlay Preparation ] for Cast Gold Alloy Restoration 25 [ MOD Inlay Preparation ] for Ceramic Restoration Student’s Notes: Amalgam and Tooth Colored Cavity Preparations and Restorations Teeth No. Practical Exercise Date Comments 26 Class II Box (OD) Cavity Preparation for GIC/Composite Resin Open Sandwich Restoration 26 OD Class II GIC/Composite Resin Open Sandwich Restoration 47 [MOB] Class II Amalgam Cavity Preparation with Buccal Extension