Cementing an Implant Crown: A Novel Measurement System Using Computational Fluid Dynamics Approach

Abstract

The CFD approach provides a convenient way to evaluate crown-cement-implant abutment systems with respect to cement flow. Preliminary evaluation indicates that the results achieved follow those of a physical actual cement-retained crown-implant abutment study.

The effects of crown venting or pre‐cementing of CAD/CAM‐constructed all‐ceramic crowns luted on YTZ implants on marginal cement excess

“…). Subsequently, crowns were seated slowly (i.e., within 1–1.5 s, Wadhwani, Goodwin & Chung, ) with finger pressure and then held under static load (20 N) for 60 s. In the adhesive cement group A, light curing was performed for the last 4 s, with each of the sides for 1 s, until 60 s of static hold had been reached (Elipar S10; 1080W/cm 2 , 3M ESPE). Cement excess was then removed at the crown margin and from the venting hole in all groups with a dental probe (B 0093/6, Dentsply Maillefer, Oklahoma, USA).…”

Effect of Implant Abutment Venting on Peri-Implant Soft Tissue Response . A Randomized Clinical Trial

“…It is also worth mentioning that a study using novel computational fluid dynamics approach achieved virtual model simulation results following those of a physical actual cement-retained crown-implant abutment study emphasizing the fact that abut-ment modifications has a major effects on cement flow that may in turn have clinical periimplant implications. [10] Accordingly, using vented abutments while applying the cement on the internal walls of the crown in the current study resulted in decreasing the amount of excess extruded cement and therefore better soft tissue health was recorded at follow up. The common general finding regarding both groups was that all biological and esthetic outcomes were within the normal health limits, remained relatively stable.…”

“…Innovative modifications in abutment designs have been reported, which can control and specifically direct cement flow as abutment venting and internal inserts. [6,[9][10][11][12] A new innovative technique was introduced in a report by Wadhwani and colleagues to increase volume of retained cement within the crown in order to decrease the amount of extruded cement where they compared the amount of extruded cement around implant/restoration interface when using three abutment types and it was reported that the type with an open screw access and added two vents showed the least amount of extruded cement. [7] These innovations have the potential to direct future abutment design in an effort to improve flow of dental cements and potentially reduce the risk of residual cement extrusion, thus the basis of this clinical study was evaluating the effect of using vented abutments on the peri-implant soft tissues.…”

A technique for fabricating abutment replica with hot melt adhesive material to minimize residual cement in implant restoration: a case report

“…Resin cement (RelyX ultimate clicker, 3M EPSE AG) was applied along the margin with minimum amount. 11 The HMA abutment replica was seated to the restoration with a light pressure (Fig. 4A).…”