cuspal coverage onlay preparation posterior tooth

MOD cavity preparation amalgam composite restoration diagram

ferrule effect crown preparation diagram tooth

"cusp coverage" restoration posterior tooth

restorative options badly broken down vital posterior tooth cuspal coverage indirect restoration guidelines

A dental clinical diagram showing classification of remaining tooth structure in a badly broken down posterior molar: four schematic cross-section illustrations labeled (A) minimal tooth loss with intact marginal ridges, (B) loss of one marginal ridge (MO or DO cavity), (C) loss of both marginal ridges (MOD cavity) with weakened cusps, and (D) severely broken down tooth with only 1-2 remaining cavity walls and undermined cusps. Clean labeled dental textbook style line diagram, black and white or muted colors, educational illustration

A dental textbook style cross-section diagram comparing four restorative treatment options for a broken down posterior molar tooth: (1) direct composite resin restoration filling the cavity, (2) an inlay restoration seated within the cavity, (3) an onlay with cuspal coverage extending over the occlusal cusps, (4) a full crown covering the entire clinical crown. Show each as a labeled side-by-side cross section of the tooth with restorative material shaded differently from tooth structure, clean educational line-art style

A dental preparation diagram showing an onlay cavity preparation on a posterior molar for cuspal coverage: illustrate rounded internal angles, occlusal reduction of 1.5-2mm over functional cusps, a butt-joint or bevel cavosurface margin, proximal box preparation, and a light chamfer finish line on the axial walls, labeled with arrows for margin design and reduction depth, clean dental textbook line-art illustration in cross section and occlusal view

A clinical decision flowchart diagram for selecting the restorative modality for a badly broken down vital posterior tooth, starting from assessment of remaining tooth structure and occlusal load, branching to options: direct composite/amalgam restoration, direct or indirect adhesive onlay with cuspal coverage, and full veneer crown, with decision criteria labeled at each branch such as number of remaining walls, isthmus width, and parafunction. Clean flowchart style with boxes and arrows, professional dental education poster style