77%. Bonding agents can be applied to dentine before cementation of inlays and onlays. This is something that is very useful as dentine contains a lot of mineral, which makes binding more problematic. A bonding agent that is applied straight after the preparation has been finished will give rise to greater dentine bond strengths. If the bonding agent is applied just before cementing the inlay/onlay or if no bonding agents are applied; the dentine bond strengths will be noticeably lower. In conclusion; the type of luting agent and properties have an impact on how long ceramic/inlays will stay cemented in the mouth. See also References Restorative dentistry