Dental Technique
Fabrication of additively manufactured custom impression copings based on stock abutments

https://doi.org/10.1016/j.prosdent.2020.09.054Get rights and content

Abstract

This article describes a dental implant impression technique using custom impression copings. The implant impression coping was designed by using a dental computer-aided design software program and manufactured by using additive methods. The impression copings were cemented to stock abutments, and the assemblies were used to make the definitive pick-up impression.

Section snippets

Technique

  • 1.

    Attach an unprepared engaging implant abutment from the implant system (One Q narrow; Dentis) to an implant analog and scan by using a desktop scanner (Map 400; Amann Girrbach AG).

  • 2.

    Start a digital workflow to design the impression coping by using a dental computer-aided design software program (Ceramill Mind; Amann Girrbach AG). Select the reconstruction type as the offset coping.

  • 3.

    Set the minimal thickness of the coping to 1 mm.

  • 4.

    Add parametric attachments to the coping to make 4 rectangular

Discussion

In implant prosthodontics, precisely fabricated components are crucial to the fabrication of accurately fitting implant-supported restorations.10 Impression copings in the presented technique were cemented to stock abutments providing accurate fit to the mating surfaces and, therefore, accurate spatial positioning of the implant analogs in the working cast. Additive manufacturing was used in the fabrication of impression copings to duplicate the undercut areas that are difficult to manufacture

Summary

This article describes a straightforward method of fabricating a custom impression coping with additive manufacturing technology. The impression copings in this technique were cemented to stock abutments to allow for an indirect implant impression in the absence of the manufacturer’s stock impression copings.

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