PREPARATION FOR LABORATORY (PROCESSING)
Grade A	Teeth arranged for proper esthetics, phonetics, and mechanical function. Wax-up neat, clean, and anatomically natural. Base 2-2.5 mm in thickness. No wax on occllusal surfaces. If monoplane occlusion is being used, then all buccal and lingual cusps are on same plane.
Grade B	Minor discrepancies from above which do not compromise the quality of the clinical treatment. Base slightly thicker or thinner than ideal. Wax slightly over or under carved.
Grade C	Tooth arrangement is adequate to make a clinically acceptable complete denture, but marginally so. Some wax in contacts between teeth or on areas which should not have wax. Wax festooning is excessively thick or thin.
Grade E	Tooth arrangement prevents clinically acceptable complete denture treatment. Most anterior teeth have wax in contact areas. Record base over-extended. Posterior teeth significantly out of occlusion. Tooth position forces upper member of articulator out of its terminal hinge position 9ball element not against vertical wall of articulator). Monoplane teeth not set flat. Compensating curve not in harmony with condylar or incisal guidance. Posterior teeth not set in correct relation to the ridges of stability and natural esthetics. Denture adhesive inside record base or on master cast.