Effect of Various Surface Treatments on Ti-Base Coping Retention

Abstract

Clinical Relevance Mechanical surface roughening of the titanium-abutment base is necessary to increase the pull-off bond strength of the lithium disilicate abutment material. Additional chemical surface treatment may further increase the bond strength, but the effects are product specific.

Clinical Performance of CAD/CAM Monolithic Lithium Disilicate Implant‐Supported Single Crowns Using Solid or Predrilled Blocks in a Fully Digital Workflow: A Retrospective Cohort Study With Up To 33 Months of Follow Up

“…There have been a few in vitro studies that have examined this type of restoration and specifically the bonding capabilities between the ceramic material and the titanium insert. 4,5 In this study where the manufacturer's recommendations were strictly followed during the bonding protocol, none of the examined restorations exhibited debonding after insertion. Based on the outcomes of the present study, both fabrication techniques are comparable, since there were no statistically significant differences among the groups.…”

“…[11][12][13][14] A restorative option that has gained popularity in the last five years is the combination implant crown, based on the type of retention. 5,6 This technique, first described by McGlumphy, 7 involves the use of a prefabricated abutment and an abutmentsupported crown with an occlusal screw access opening that is definitively cemented onto the abutment extraorally. The abutment-crown apparatus is then inserted as a one piece unit and secured into the implant fixture intraorally.…”

“…Alternatively, the predrilled LS 2 block can be milled to a full contour restoration, which is then bonded on a Ti insert extraorally and the combined assembly is then delivered intraorally as a single unit. 5 Lastly, a conventional solid LS 2 block can be used to mill a crown, with the screw access hole manually created on the occlusal surface before crystallization, using a diamond cutting instrument. The crown is then bonded on a custom or prefabricated abutment extraorally and delivered as a one-piece unit intraorally.…”

“…A LS 2 block with a predrilled opening can be used to fabricate an abutment that is bonded onto a Titanium (Ti) insert extraorally; a ceramic crown is then fabricated and cemented on the abutment intraorally. Alternatively, the predrilled LS 2 block can be milled to a full contour restoration, which is then bonded on a Ti insert extraorally and the combined assembly is then delivered intraorally as a single unit 5 . Lastly, a conventional solid LS 2 block can be used to mill a crown, with the screw access hole manually created on the occlusal surface before crystallization, using a diamond cutting instrument.…”

Mechanical Stability of Screw-Retained Monolithic and Bi-layer Posterior Hybrid Abutment Crowns after Thermomechanical Loading: An In Vitro Study

“…To achieve a durable bond and a high failure load between ISSC and titanium bases, air-particle abrasion with a moderate pressure and subsequent bonding with a composite cement is recommended [43,44]. However, this only applies to titanium bases that do not have microgrooves.…”