Across
- 2. The wall or margin located toward the gingiva; in proximal preparations it forms the gingival boundary of the proximal box.
- 4. Loss of tooth structure caused by tooth-to-tooth contact, such as during mastication or parafunction.
- 6. Preparation features that help prevent the restorative material from being displaced from the prepared tooth.
- 8. The internal wall of a cavity preparation that runs generally parallel to the long axis of the tooth; in a Class V preparation it follows the external tooth contour.
- 12. Preparation features designed to help the tooth and restoration withstand masticatory forces without fracture.
- 15. A lesion involving the mesial or distal proximal surface of a posterior tooth, with access commonly established through the occlusal surface; decay often begins slightly gingival to the contact point.
- 19. The stage that includes removal of remaining defective restorative material or soft dentin, pulp protection, secondary resistance and retention forms, external-wall finishing, and final cleaning and inspection.
- 20. The external shape and extent of the prepared cavity, determined by lesion extent, access, and restorative requirements while conserving sound tooth structure.
Down
- 1. The portion of a Class II preparation extending into the proximal surface of a posterior tooth to provide access to and treatment of the proximal lesion.
- 3. A non-carious cervical defect described in the lecture as associated with excessive flexure of the tooth under loading.
- 5. The stage that establishes the initial depth and outline form and develops primary resistance, retention, and convenience forms.
- 7. Mechanical alteration of a defective, injured, or diseased tooth so restorative material can reestablish normal form and function, including esthetic correction when indicated.
- 9. Loss of tooth-surface structure caused by chemical action of acids in the continued presence of demineralizing agents; defects are often smooth, rounded, or cupped out.
- 10. Loss of tooth structure caused by mechanical wear from an external object or habit rather than tooth-to-tooth contact.
- 11. A smooth-surface lesion located in the gingival third of the facial or lingual surface; it does not include pit-and-fissure lesions.
- 13. The junction between the prepared cavity wall and the external tooth surface.
- 14. A structural defect involving a crack or fracture in tooth tissue; the lecture notes that a split tooth can be the end result of a cracked tooth.
- 16. A direct restorative material made by combining a metallic alloy with mercury; the lectures address its use in Class II and Class V preparations.
- 17. The depth established during the initial stage of tooth preparation, guided by the lesion and preparation requirements.
- 18. Preparation features that provide adequate access, visibility, and room for instruments and restorative procedures.