How Should People Who Grind Their Teeth Choose an All-Ceramic Material?｜證據鏈

Night-time tooth grinding is not an absolute contraindication to all-ceramic restorations, nor does simply switching to a harder material necessarily prevent problems. The questions that really need answering are: which tooth bears force and in what direction; whether the restoration is a veneer, a single crown, or a bridge; whether the available occlusal space can accommodate a sound design; and how much healthy tooth structure remains to provide support or bonding. A systematic review has yet to provide a clear, consistent answer as to whether sleep bruxism increases failure across all ceramic restorations, and the certainty of the evidence as a whole is very low. An unfavourable signal was identified for anterior veneers, but it cannot be extrapolated directly to every type of all-ceramic crown. Clinical data are available for both lithium disilicate and zirconia, but neither material can prevail on its own when separated from position, thickness, restoration design, and occlusal conditions. Material selection therefore cannot be reduced to two statements: “lithium disilicate looks better” and “zirconia is harder”.