3D-Printed Implant Overdentures: Comparing Impression Techniques

Condition(s) studied

Investigational drug(s) / intervention(s)

Conventional open -tray impression: Primary impression with irreversible hydrocolloid, custom tray with open window, and final impression with silicone material around impression copings to fabricate a 3D-printed implant overdenture

Functionally generated reline impression: Interim prosthesis relieved and reline impression taken during centric closure with border molding, scanned to construct a 3D-printed implant overdenture

Mucostatic base with functional borders impression: Intraoral scan of edentulous arch, 3D-printed baseplates for occlusion rim, functional border molding, and digital workflow to fabricate 3D-printed implant overdenture

Study summary

This randomized crossover clinical trial aims to compare three different impression techniques for the construction of 3d-printed mandibular implant overdentures in completely edentulous patients. Sixteen patients will receive two mandibular implants and three overdentures fabricated using:(1) conventional open-tray implant level impression (2) functionally generated reline impression, and (3)mucostatic base with functional borders impression. Each overdenture will be worn for three months with a washout period between interventions.

The primary outcome is masticatory efficiency, assessed using a color -mixing ability test at 3,6, and9 months.

Secondary outcome is patient satisfaction, assessed using a Visual Analog Scale (VAS) at the same intervals. the study hypothesis is that the impression technique influences both chewing efficiency and patient satisfaction

Eligibility

Primary outcome measure(s)

• Masticatory efficiency — 3, 6, and 9 months after overdenture insertion
  Assessment of chewing efficiency using a color- mixing ability test

Trial sites (1)

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