Effect of photodynamic therapy and ErCrYSGG laser irradiation on the push-out bond strength between fiber post and root dentin

Faisal Abdullah Alonaizan; Yasser F AlFawaz; Abdulaziz Alsahhaf; Raneem S Alofi; Khulud Abdulrahman Al-Aali; Ali Alrahlah; Fahim Vohra; Tariq Abduljabbar

doi:10.1016/j.pdpdt.2019.06.022

Effect of photodynamic therapy and ErCrYSGG laser irradiation on the push-out bond strength between fiber post and root dentin

Photodiagnosis Photodyn Ther. 2019 Sep:27:415-418. doi: 10.1016/j.pdpdt.2019.06.022. Epub 2019 Jun 25.

Authors

Faisal Abdullah Alonaizan¹, Yasser F AlFawaz², Abdulaziz Alsahhaf³, Raneem S Alofi², Khulud Abdulrahman Al-Aali⁴, Ali Alrahlah⁵, Fahim Vohra⁶, Tariq Abduljabbar⁷

Affiliations

¹ Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
² Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia.
³ Department of Prosthetic Dental Sciences, College Of Dentistry, King Saud University, Riyadh, Saudi Arabia.
⁴ Department Of Clinical Dental Sciences, College Of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.
⁵ Department of Restorative Dental Sciences, College of Dentistry, King Saud University, And Engineer Abdullah Bugshan Research Chair For Dental And Oral Rehabilitation, Riyadh, Saudi Arabia.
⁶ Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University; Engineer Abdullah Bugshan Research Chair For Dental and Oral Rehabilitation, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
⁷ Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University; Engineer Abdullah Bugshan Research Chair For Dental and Oral Rehabilitation, College of Dentistry, King Saud University, Riyadh, Saudi Arabia. Electronic address: tajabbar@ksu.edu.sa.

PMID: 31252142
DOI: 10.1016/j.pdpdt.2019.06.022

Abstract

Background: To evaluate the push out bond strength and modes of failure of fiber post by using photodynamic therapy (PDT), Er,Cr:YSGG laser and conventional cleaning and shaping (CCS).

Methods: Sixty maxillary anterior teeth were sectioned horizontaly 2 mm incisal to the cemento-enamel junction, and root canal were prepared for post space. Tapered fiber posts were placed inside the root canal after post space was made. The fiber posts were subjected to PDT, Er,Cr:YSGG laser and CSS with 20 specimens in each group. The specimens obtained were sectioned in cervical and apical sections. A universal testing machine was used to perform the push out test and the push out bond strength was formulated by σ = C/A, expressed in mega-pascals (MPa).

Results: The highest mean push out bond strength was achieved by PDT group (8.08 ± 2.73 MPa) and the lowest was shown by specimens in CCS group (7.45 ± 1.04 MPa). ANOVA showed no statistical difference among the experimental groups (p = 0.481). In the cervical segments, the mean push-out bond strength was found to be slightly higher for all three groups compared to apical segments (P < 0.05). The independent t-tests results showed that the mean push-out bond strength values of the cervical segments were slightly higher than the apical segments in PDT, Er,Cr:YSGG and CSS groups (P < 0.05). Significant differences were observed when mean push-out bond strengths were compared for both cervical (p = 0.037) and apical (p = 0.019) segments between all the groups. Twenty-one failures were found at the interface between the adhesive and the dentin surface, 6 failures were observed at the interface between the adhesive and post, whereas 5 failures were mixed.

Conclusion: Push-out bond strength to root canal dentin were not affected by Er,Cr:YSGG compared with conventional cleaning and shaping. However, PDT produced the smallest number of failure modes and slightly higher push-out bond strength to root dentin.

Keywords: Cr:YSGG; Er; Fiber post; Photodynamic therapy; Push-Out bond strength.

MeSH terms

Dental Implants*
Dentin*
Humans
Lasers, Semiconductor
Lasers, Solid-State
Low-Level Light Therapy / methods*
Materials Testing / methods*
Methylene Blue / pharmacology
Photochemotherapy / methods*
Photosensitizing Agents / pharmacology

Substances

Dental Implants
Photosensitizing Agents
Methylene Blue