How thick should a posterior crown be?

Material choice drives the reduction target more than any other single variable. Monolithic high-strength zirconia (1,000-1,200 MPa flexural strength) tolerates thinner cross-sections without fracture risk, making it the practical default for second molars and bruxers. Lithium disilicate delivers superior esthetics in premolar positions but demands more tooth structure. Knowing the material before the prep saves the dentist a second appointment and saves the lab a remake.

For general dentists managing high-volume restorative schedules, the remake risk concentrates in two places: insufficient occlusal reduction on functional cusps and over-tapered axial walls that leave marginal thickness below 0.5 mm. Dani Dental flags both conditions during digital case review before the crown enters production. That single checkpoint is where most avoidable remakes are caught, typically within 24 hours of scan receipt.

Lab-side design also carries responsibility here. A CAD technician who blindly follows a scan without flagging borderline reduction is passing the fracture risk downstream to the patient. At Dani, the technician assigned to the case contacts the referring doctor directly when reduction falls short of the material minimum, usually with a photo markup showing the specific cusp or margin. That conversation takes five minutes and avoids a three-week remake cycle.