Failure Modes of New Fiber Post Systems Using Stereomicroscope: An in Vitro Study

Hani M. Mouafaq; Shakhawan K. Kadir

Article Details

Failure Modes of New Fiber Post Systems Using Stereomicroscope: An in Vitro Study

Authors:

Hani M. Mouafaq | Shakhawan K. Kadir

Publisher:

University of Sulaimani

Journal:

Sulaimani Dental Journal Vol.7 Issue 1, pp.8-17

Document Type:

Article

Publication Date:

2/2025

Document Language:

English

Document ID (Org No.):

2001932933

pISSN:

2309-4656

Keywords:

Abstract:

 Objective: Failure of the glass posts is a major and the main concern of practical dentistry. This study conducted to evaluate the modeof failure among prefabricated bundle fiber posts, prefabricated taper fiber posts, and short fiber-reinforced composite as a post andluting material using a stereomicroscope.Methods: Thirty mandibular premolars were divided into three groups (n=10). Group 1: prefabricated taper fiber post cemented witha resin core, group 2: prefabricated bundle fiber post cemented with a resin core and group 3: short fiber-reinforced composite usedinstead of post and cement. Each root specimen cut into three slices of 2 mm thickness from the cervical, middle, and apical parts ofthe posts. Push-out tests were performed using a universal testing machine at three sites in each root at a crosshead speed of 0.5 mm/min.Then, the specimens evaluated under stereomicroscope 40X to classify the failure mode.Results: Sixty two specimens failed adhesively between dentin and cement in all groups, adhesive failure between the post and cementwas in the second group, prefabricated taper fiber post (GC fiber post) followed by prefabricated bundle fiber posts (Rebilda GT) (17sections), and the mixed failure was second for prefabricated bundle fiber posts (Rebilda GT) and third for prefabricated taper fiberpost (GC fiber post) (11sections).Conclusions: Adhesive failure between cement and dentin is dominant in all post systems in three sites of the roots (cervical, middle,and apical). The second most frequent failure is adhesive between post and cement in all regions in post systems.

Article Details

Failure Modes of New Fiber Post Systems Using Stereomicroscope: An in Vitro Study

Authors:

Hani M. Mouafaq | Shakhawan K. Kadir

Publisher:

University of Sulaimani

Journal:

Sulaimani Dental Journal Vol.7 Issue 1, pp.8-17

Document Type:

Article

Publication Date:

2/2025

Document Language:

English

Document ID (Org No.):

2001932933

pISSN:

2309-4656

Fiber post

Bundle post

Short fiber-reinforced composite

Failure modes

Issues

Article Details

Failure Modes of New Fiber Post Systems Using Stereomicroscope: An in Vitro Study

Authors: Hani M. Mouafaq | Shakhawan K. Kadir

Publisher: University of Sulaimani

Journal: Sulaimani Dental Journal Vol.7 Issue 1, pp.8-17

Document Type: Article

Publication Date: 2/2025

Document Language: English

Document ID (Org No.): 2001932933

pISSN: 2309-4656

Fiber post

Bundle post

Short fiber-reinforced composite

Failure modes

Issues

Authors:

Hani M. Mouafaq | Shakhawan K. Kadir

Publisher:

University of Sulaimani

Journal:

Sulaimani Dental Journal Vol.7 Issue 1, pp.8-17

Document Type:

Article

Publication Date:

2/2025

Document Language:

English

Document ID (Org No.):

2001932933

pISSN:

2309-4656