Editorial Type:
Article Category: Case Report
 | 
Online Publication Date: 31 Jan 2023

Synchronous Fabrication of Custom One-piece Glass Fiber Post-and-core and Zirconia Crown by a Fully Digital Workflow

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Page Range: 130 – 136
DOI: 10.2341/20-030-S
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SUMMARY

Combined crown and post-and-core treatment often requires multiple intermittent appointments and takes a long time. This article describes a novel method for simultaneously fabricating a custom glass fiber post-and-core and the corresponding crown. The critical step, defined as a post-and-core virtual try-in, is to construct a virtual crown abutment that mimics the profile of a real one gained after post-cementation and tooth preparation. The fully digital workflow optimizes the treatment and saves time by accomplishing restorations on the first visit.

Copyright: © Operative Dentistry, 2023 2023
Figure 1.
Figure 1.

The post space after preparation (A) occlusal view (B) pre-operative radiograph. The red line indicated the root length in the alveolar bone, while the yellow line represented the length of the post in the alveolar bone.

Figure 2.
Figure 2.

Silicone rubber to copy the contour of post space. (A) Model P and (B) Model P1.

Figure 3.
Figure 3.

Manual registration interface for virtual alignment of post-model P1 (green) and dentition model D1 (red).

Figure 4.
Figure 4.

(A) The alignment of post model P1 and dentition model D1, (B) the black arrow pointed to the trimming line in root cervical 1/3 of model P1 and the gray portion (two-thirds of the root apex) was remaining, and (C) Model D2.

Figure 5.
Figure 5.

Flowchart demonstrated the digital workflow: P1. The virtual model of posts-pace impression. D1. Maxillary dentition model. D2. Dentition model with abutment and post-space profile. P2. The virtual model of post-and-core. D3. The virtual model of section dentition included the reconstructed abutment.

Figure 6.
Figure 6.

(A) The length of the post-and-core and (B) the glass fiber post-and-core in place. The blue arrows pointed to the core-dentin cement interface boundary.

Figure 7.
Figure 7.

The thickness of cement silicone film was measured with a caliper.

Figure 8.
Figure 8.

Zirconia crown in position.

Figure 9.
Figure 9.

Postoperative radiograph.

Contributor Notes

*Corresponding author: #383 Zhongshan Dong Lu, Chang’an District, Shijiazhuang City, 050017 Hebei Province, China; e-mail: kqxfchen@163.com
Accepted: 23 Jul 2022
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