Restor Dent Endod.  2021 Nov;46(4):e50. 10.5395/rde.2021.46.e50.

Fiber-reinforced composite post removal using guided endodontics: a case report

• Cho C
• Jo HJ
• Ha JH

• KMID: 2548094
• DOI: http://doi.org/10.5395/rde.2021.46.e50

Abstract

Although several techniques have been proposed to remove fiber-reinforced composite (FRC) post, no safe and efficient technique has been established. Recently, a guided endodontics technique has been introduced in cases of pulp canal obliteration. This study describes 2 cases of FRC post removal from maxillary anterior teeth using this guided endodontics technique with a dental operating microscope. Optically scanned data set from plaster cast model was superimposed with the data set of cone-beam computed tomography. By implant planning software, the path of a guide drill was selected. Based on them, a customized stent was fabricated and utilized to remove the FRC post. Employing guided endodontics, the FRC post was removed quickly and safely with minimizing the loss of the remaining tooth structure. The guided endodontics was a useful option for FRC post removal.

Keyword

Fiber-reinforced composite post; Guided endodontics; Post removal

Figure

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  Figure 1 The initial periapical radiograph (A) and photography (B) shows that the fiber-reinforced composite post-resin core of upper maxillary (right) central incisor is partially broken.

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  Figure 2 Planning of coronal, sagittal, and axial plane of the guide drill placement for removal of fiber-reinforced composite post using the implant planning software (DDS-Pro).

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  Figure 3 (A) The stent is positioned in the mouth. (B) After 8.0 mm apical advancement of the guide drill. (C) After removing the remaining fiber-reinforced composite post-resin core under the dental operating microscope. (D) Radiographic verification of post removal. (E) After seating cast post and core and full veneer crown. (F) Radiography of completed case.

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  Figure 4 (A) Preoperative radiography shows preinstalled fiber-reinforced composite (FRC) posts and periapical lesions in the upper maxillary (right) central incisor, upper maxillary (left) central incisor, and upper maxillary (left) lateral incisor. (B) For the upper maxillary (left) lateral incisor, the FRC post was removed with a conventional method, and nonsurgical root canal treatment was completed. (C) For upper maxillary (right) and (left) central incisors, guided endodontics was used for removing the FRC posts. Periapical radiography shows the direction of the guide drill. (D) After removing the remaining FRC post with an ultrasonic tip, the root canal was obturated nonsurgically. (E) One-month follow-up radiograph. (F) The periapical lesion was resolved after 1-year follow-up.

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