الفهرس 
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Abstract
Aim: The aim of this RCT is to compare the effect of using two different techniques
in manufacturing copings in telescopic overdenture retained by two dental implants in the
interforaminal region on patient satisfaction and retention
Methods: 20 completely edentulous patients were randomly divided into two equal
groups: (10 patients each).
group I (The Control group) For patients in this group, the secondary crowns of the
telescopic overdenture were made of Cast metal copings hand free technique.
group II (The intervention group) For patients in this group, the secondary crowns of
the telescopic overdenture were made of cast metal copings by indirect 3d printing.
Results: There was a significant difference in overall retention forces between
observations. There was no significant difference in overall retention forces between groups.
There was a significant difference in patient satisfaction between observations. There was no
significant difference in patient satisfaction between the groups.
Conclusion: Indirect 3D printing can be an alternative to conventional free hand
waxing up of Co-Cr copings to save time taking into consideration increased cost and complex
workflow.
Keywords: Telescopic overdenture, Edentulous, Implant overdenture, Patient
satisfaction, Retention, 3D printing.