Retrievability of Implant-Supported Crowns When Using Three Different Cements: A Controlled Clinical Trial

Abstract

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The Effect of CAD/CAM Crown Material and Cement Type on Retention to Implant Abutments

“…[25][26][27] Previous studies have evaluated the pullout retention values for metal abutments with different cements and demonstrated that the cement type influences the retentiveness level of the prosthesis. 27,28 Additionally, some authors suggested that provisional cements could be adequate for conventional cement-retained, implantsupported crowns, 29,30 which is supported by our findings.…”

“…Previous studies have evaluated the pullout retention values for metal abutments with different cements and demonstrated that the cement type influences the retentiveness level of the prosthesis . Additionally, some authors suggested that provisional cements could be adequate for conventional cement‐retained, implant‐supported crowns, which is supported by our findings. The results of the current study demonstrated that resin‐based cement presented significantly higher pullout strength compared to the provisional cement group, and also compared to groups without cement (data collapsed over crown material).…”

Bond strength and interactions of machined titanium-based alloy with dental cements

“…Fluoride is a corrosive agent known to affect titanium and its alloys, with hydrofluoride etchant commonly used to clean and etch titanium. 17 Both of these polycarboxylate cements have been reported to increase restoration retention when used with titanium abutments, [9][10][11][12] caused perhaps by a chemical interaction. 10,11 However, aside from speculation, this has not been investigated.…”

“…Several studies have also reported unexpectedly high bonding values of polycarboxylate cements with titanium structures, leading the authors to speculate that a bonding mechanism to titanium exists. [9][10][11][12] Several reports indicate that some dental cements alter the protective titanium oxide layer, resulting in color changes to the titanium surface. 12,13 The instructions for use with one polycarboxylate cement (Durelon; 3M ESPE) state that "a discoloration effect may result when used with titanium."…”

“…[9][10][11][12] Several reports indicate that some dental cements alter the protective titanium oxide layer, resulting in color changes to the titanium surface. 12,13 The instructions for use with one polycarboxylate cement (Durelon; 3M ESPE) state that "a discoloration effect may result when used with titanium." Color change has been associated with corrosion of the titanium alloy, 14 which may account for the higher than expected bond strength values.…”