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Stomatologija 2018; 20 (2): 43-8 256 KB

Influence of glass fibre post cementation depth on dental root fracture

Miglė Jakubonytė¹, Kęstutis Česaitis², Jonas Junevičius²

Summary

Introduction. Glass fibre posts that are newer and have better properties are gaining more popularity than metal posts. However, there is no consensus about the optimal cementation depth of glass fibre posts. In our study, we have attempted to assess fracture resistance of roots restored with glass fibre posts cemented at different root depths.

Materials and methods. Specimens were formed with peeso reamers and a special reamer adapted for the cementation of glass fiber posts at different depths. Glass fibre posts were cemented using self-etching cement: in group 1 – at the depth of 2/3 of the working length of the root canal (11 mm), in group 2 – at the depth of 1/2 of the working length of the root canal (7.5 mm) and in group 3 – at the depth of 1/3 of the working length of the root canal (5 mm). Dental roots were standardized by preparing their walls to equal measurements with a mill. Specimens were embedded on a metal plate at a 45° angle and were vertically pressed with a hydraulic press in buccolingual direction. Fracture force was recorded in Newton (N) to the breaking point.

Results. After data analyses with ANOVA and T-test software, the null hypothesis was confirmed: there was no statistically significant difference among the results of all 3 groups (P >0.05).

Conclusion. The cementation depth of the glass fibre posts that we studied has no influence on root fracture resistance.

Key words: post, depth, fracture resistance, root, core.

Received: 18 01 2018

Accepted for publishing: 25 06 2018

¹Private practice

²Clinical Department of Dental and Maxillofacial Orthopedics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania

Address correspondence to Jonas Junevičius, Clinical Department of Dental and Maxillofacial Orthopedics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Sausinės 23, Kaunas, Lithuania.

E-mail address: dantistasjonas@gmail.com



	Baltic Dental and Maxillofacial Journal

June, 2018, Vol. 20, No. 2 CONTENTS SCIENTIFIC ARTICLES Microsurgical reconstruction of oral defects with free flaps for patients with oral cancer: an 8 year experience with 153 consecutive cases Kalvis Pastars, Janis Zarins, Juris Tars, Anna Ivanova, Andrejs Skagers 39-42 Influence of glass fibre post cementation depth on dental root fracture Miglė Jakubonytė, Kęstutis Česaitis, Jonas Junevičius 43-48 Epidemiology of primary oral cancer diagnostics in Kaunas Rokas Gelažius, Albinas Gervickas, Ričardas Kubilius 49-53 REVIEWS PEEK polymer’s properties and its use in prosthodontics. A review Gediminas Skirbutis, Agnė Dzingutė, Viltė Masiliūnaitė, Gabrielė Šulcaitė, Juozas Žilinskas 54-58 CASE REPORT Maxillofacial Radiographic study of Gardner’s syndrome presenting with odontogenic myxoma: A rare case report Loutfi Salti, Michael Rasse, Khaled Al-ouf 59-64 © 2018 Stomatologija		Stomatologija 2018; 20 (2): 43-8 256 KB Influence of glass fibre post cementation depth on dental root fracture Miglė Jakubonytė¹, Kęstutis Česaitis², Jonas Junevičius² Summary Introduction. Glass fibre posts that are newer and have better properties are gaining more popularity than metal posts. However, there is no consensus about the optimal cementation depth of glass fibre posts. In our study, we have attempted to assess fracture resistance of roots restored with glass fibre posts cemented at different root depths. Materials and methods. Specimens were formed with peeso reamers and a special reamer adapted for the cementation of glass fiber posts at different depths. Glass fibre posts were cemented using self-etching cement: in group 1 – at the depth of 2/3 of the working length of the root canal (11 mm), in group 2 – at the depth of 1/2 of the working length of the root canal (7.5 mm) and in group 3 – at the depth of 1/3 of the working length of the root canal (5 mm). Dental roots were standardized by preparing their walls to equal measurements with a mill. Specimens were embedded on a metal plate at a 45° angle and were vertically pressed with a hydraulic press in buccolingual direction. Fracture force was recorded in Newton (N) to the breaking point. Results. After data analyses with ANOVA and T-test software, the null hypothesis was confirmed: there was no statistically significant difference among the results of all 3 groups (P >0.05). Conclusion. The cementation depth of the glass fibre posts that we studied has no influence on root fracture resistance. Key words: post, depth, fracture resistance, root, core. Received: 18 01 2018 Accepted for publishing: 25 06 2018 ¹Private practice ²Clinical Department of Dental and Maxillofacial Orthopedics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania Address correspondence to Jonas Junevičius, Clinical Department of Dental and Maxillofacial Orthopedics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Sausinės 23, Kaunas, Lithuania. E-mail address: dantistasjonas@gmail.com