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An In Vitro Approach to Photodynamic Therapy
Published on: August 17, 2018
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Effects of photodynamic therapy on the adhesive interface using two fiber posts cementation systems
Anna Thereza Peroba Rezende Ramos1, Lauriê Garcia Belizário1, Keren Cristina Fagundes Jordão-Basso1
1Department of Restorative Dentistry, UNESP - São Paulo State University, Araraquara, Brazil.
Photodiagnosis and Photodynamic Therapy
|September 3, 2018
Summary
Photodynamic therapy (PDT) did not affect the bond strength of glass-fiber posts cemented with RelyX U200 or Gold Label 1. Dentinal penetrability was only slightly reduced in the cervical third with Gold Label 1, with or without PDT.
Area of Science:
- Endodontics
- Dental Materials Science
- Biomaterials
Background:
- Photodynamic therapy (PDT) is used for prosthetic space decontamination.
- Its impact on the adhesion of glass-fiber post cementation systems remains unclear.
Purpose of the Study:
- To assess PDT's effect on the dentin-adhesive interface of glass-fiber posts.
- Investigate cementation systems: self-adhesive resin (RelyX U200) and glass ionomer (Gold Label 1).
Main Methods:
- Forty endodontically treated canine roots were prepared for fiber posts.
- Roots were divided into four groups: two cement types, with and without PDT.
- Push-out bond strength and dentinal penetrability (laser confocal microscopy) were evaluated.
Main Results:
- No significant differences in bond strength were observed across all groups and root thirds.
- Gold Label 1 showed reduced dentinal penetrability in the cervical third, irrespective of PDT.
Conclusions:
- Photodynamic therapy does not negatively impact the bonding of glass-fiber posts to root dentin.
- Both RelyX U200 and Gold Label 1 exhibited comparable bonding performance.
Keywords:
Antimicroial photodynamic therapyFiber postsGlass-ionomer cementPhotodynamic therapySelf-adhesive cementMore Related Videos
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