Dental anatomy on steroids with this wax-up technique. Reconstruction of a tooth using different colored wax to represent the different anatomical landmarks of a tooth. For a maxillary central incisor, we have the developmental lobes, cingulum, and incisal edge. The contact will be on the lingual fossa. For a mandibular first molar, we have 5 cusps, 5 triangular ridges, 2 marginal ridges, and a central groove. The most critical part is to establish proper occlusion. The mandibular buccal cusps are the functioning cusps (FUN FACT: functional cusps have greater enamel than the non-functioning cusps). Thus after applying white powder, we need to see at least two buccal cusps and the distal marginal ridge are in contact with the opposing fossa (occlusal scheme: cusp to fossa). In the picture, my distal-lingual cusp is too high; thus I had to remove wax to make sure it is not in contact will the top tooth. Curve of Wilson (emphasizes the fact that lingual cusps of mandibular posterior teeth are lower than buccal cusps) and Curve of Spee (emphasizes the fact that all buccal cusps on the arch of posterior teeth must align) need to be respected to establish a proper wax-up.
References
Mohan, B., & Sihivahanan, D. (2012). Occlusion: The gateway to success. Journal of
Interdisciplinary dentistry, 2(2), 68.
Davies, S., & Gray, R. M. J. (2001). Occlusion: What is occlusion?. British dental journal,
191(5), 235-245.
McCullock, A. J. (2003). Making occlusion work: 1. Terminology, occlusal assessment and
recording. DENTAL UPDATE-LONDON-, 30(3), 150-157.
McCullock, A. J. (2003). Making occlusion work: 2. Practical considerations. Dental update,
30(4), 211-219.
Magne, Passcal. (2022). Biomimetic Restorative Dentistry Volume 1. Quintessence Publishing
Co. p. 8
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