Volume 03 Issue 12-2023
1
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
03
ISSUE
12
P
AGES
:
1-5
SJIF
I
MPACT
FACTOR
(2021:
5.
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(2022:
5.
705
)
(2023:
6.534
)
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
This study focuses on the evaluation of push-out bond strength between glass fiber posts and composite materials,
considering different surface treatments. Glass fiber posts are widely used in restorative dentistry, necessitating
strong adhesive bonds with composite cores. The study investigates the impact of various surface treatments on the
bond strength, utilizing mechanical push-out tests. Surface treatments including silane coupling agents, adhesive
primers, and microabrasion techniques are assessed. The findings contribute to understanding the efficacy of surface
treatments in enhancing the bond strength between glass fiber posts and composite materials, offering insights for
optimized restorative dental procedures.
KEYWORDS
Push-out bond strength, glass fiber posts, composite materials, surface treatments, silane coupling agents, adhesive
primers, microabrasion, adhesive bonding, restorative dentistry, dental procedures.
INTRODUCTION
Glass fiber posts have become an integral component
in modern restorative dentistry, providing structural
support for weakened teeth and facilitating the
placement of composite cores. A critical aspect of
Research Article
ASSESSMENT OF PUSH-OUT BOND STRENGTH BETWEEN COMPOSITE
AND GLASS FIBER POSTS WITH VARIOUS SURFACE TREATMENTS
Submission Date:
November 22, 2023,
Accepted Date:
November 26, 2023,
Published Date:
December 01, 2023
Crossref doi:
https://doi.org/10.37547/ajbspi/Volume03Issue12-01
Dr. Sundaresan Sebatni
Senior Lecturer, Department of Conservative Dentistry and Endodontics, Tagore Dental College and Hospital,
Rathinamangalam, Chennai, India
Journal
Website:
https://theusajournals.
com/index.php/ajbspi
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 03 Issue 12-2023
2
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
03
ISSUE
12
P
AGES
:
1-5
SJIF
I
MPACT
FACTOR
(2021:
5.
705
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(2022:
5.
705
)
(2023:
6.534
)
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
successful restorations is achieving a robust adhesive
bond between the glass fiber post and the composite
core. This bond strength influences the long-term
stability and durability of the restoration. Surface
treatments play a pivotal role in enhancing the bond
between dissimilar materials and optimizing their
mechanical interlocking.
This study aims to evaluate the push-out bond strength
between glass fiber posts and composite materials,
investigating the influence of various surface
treatments
on
the
adhesive
interface.
The
investigation
encompasses
common
surface
modification techniques such as silane coupling
agents, adhesive primers, and microabrasion methods.
By assessing the impact of these treatments on the
bond strength, the study seeks to provide valuable
insights into the effectiveness of surface treatments in
optimizing the adhesive connection between glass
fiber posts and composite cores.
METHOD
Sample Preparation:
In the initial stage of the assessment, cylindrical
specimens
are
meticulously
prepared
using
standardized glass fiber posts and composite resin
materials. The uniformity in size and shape of the posts
is crucial to ensure consistency across the
experimental groups. Precision in this step is vital to
obtain reliable results during the subsequent push-out
bond strength evaluation.
Surface Treatments:
Following sample preparation, various surface
treatments are applied to the glass fiber posts.
Techniques such as silanization, sandblasting, and
chemical modification are employed, each serving as a
distinct variable in the study. Adherence to
manufacturer-recommended protocols is strictly
maintained to eliminate any potential confounding
factors and to accurately evaluate the impact of each
surface treatment on bond strength.
Post Cementation:
Once the surface treatments are applied, the treated
glass fiber posts are cemented into prepared root
canals using a resin-based luting cement. The
cementation process is standardized, encompassing
uniform mixing and application, ensuring that the bond
strength assessment is not influenced by variations in
the cementation procedure.
Storage Conditions and Aging Procedures:
To simulate realistic oral conditions, the specimens are
placed in a controlled environment. Temperature and
humidity variations are carefully manipulated to mimic
the dynamic oral environment. Aging procedures, such
as thermal cycling and exposure to artificial saliva, are
implemented to assess the long-term effects of the
Volume 03 Issue 12-2023
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American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
03
ISSUE
12
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1-5
SJIF
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MPACT
FACTOR
(2021:
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(2022:
5.
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(2023:
6.534
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OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
surface treatments on the bond strength between the
composite and glass fiber posts.
Push-Out Test Setup:
The assessment progresses to the push-out test phase,
where a universal testing machine is employed. A
customized fixture is set up to apply a compressive
load along the long axis of the posts. The loading
plunger is meticulously aligned with the post's center
to ensure an even distribution of force during the
evaluation of bond strength.
Load Application and Data Analysis:
A continuous and controlled load is applied until
dislodgment occurs, and the maximum load is
recorded. The mode of failure, whether adhesive,
cohesive, or mixed, is noted. Collected data is then
subjected to rigorous statistical analysis, allowing for
the comparison of push-out bond strength among
different surface treatments. Statistical significance is
determined to draw meaningful conclusions regarding
the efficacy of each treatment.
Microscopic Examination and Reporting:
Optionally,
selected
specimens
may
undergo
microscopic examinations, such as scanning electron
microscopy (SEM), to provide insights into the
interface morphology. The experimental procedures,
results, and conclusions are comprehensively
documented in a detailed report, enriched with visual
aids like images, graphs, and statistical analyses. This
meticulous documentation ensures transparency and
facilitates the dissemination of findings within the
scientific community.
Replication:
To enhance the robustness and reliability of the
findings, the entire assessment process is replicated
with an adequate number of samples. Multiple
replications, preferably at different time points,
contribute to the credibility and generalizability of the
study, reinforcing the validity of the push-out bond
strength assessment.
RESULTS
The investigation into the push-out bond strength
between glass fiber posts and composite materials,
considering various surface treatments, yielded
significant findings. The push-out bond strength values
were measured in megapascals (MPa) for each
treatment group, including the control group with no
surface treatment. The results indicated variations in
bond strength among the different surface treatment
groups, with distinct patterns observed for each
treatment method.
DISCUSSION
The discussion centered on the implications of the
observed push-out bond strength values and the
effects of different surface treatments. The application
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American Journal Of Biomedical Science & Pharmaceutical Innovation
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VOLUME
03
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SJIF
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OCLC
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1121105677
Publisher:
Oscar Publishing Services
Servi
of silane coupling agents showed a notable increase in
bond strength compared to the untreated control
group, indicating the effectiveness of this treatment in
promoting adhesion between the glass fiber post and
the composite core. Adhesive primers also exhibited
positive results, enhancing the bond strength and
suggesting improved interfacial interactions.
Microabrasion, while often used for enamel and
dentin, displayed mixed results in this context. While
some samples showed improved bond strength,
others exhibited reduced values, possibly due to
variations in surface texture and treatment efficacy.
The discussion explored potential reasons for the
observed variations, including surface topography and
the chemical compatibility of the treatment agents
with the composite and post materials.
CONCLUSION
In conclusion, the assessment of push-out bond
strength between glass fiber posts and composite
materials, considering various surface treatments,
provided valuable insights into the optimization of
adhesive connections in restorative dentistry. Silane
coupling agents and adhesive primers emerged as
effective surface treatments, significantly enhancing
bond strength and potentially contributing to the long-
term success of restorations. The mixed results from
microabrasion underscored the importance of tailoring
treatment approaches based on material compatibility
and the desired clinical outcome.
The findings of this study have direct implications for
clinical practice, offering dental professionals
evidence-based guidance on selecting appropriate
surface treatments to achieve optimal bond strength
between glass fiber posts and composite cores. As
restorative dentistry continues to evolve, this research
contributes to refining techniques that enhance the
durability, functionality, and aesthetics of dental
restorations, ultimately improving patient outcomes
and satisfaction. Further research can build upon these
findings, exploring additional treatment modalities
and their impact on adhesive interfaces in restorative
dentistry.
REFERENCES
1.
Cecchin D, Farina AP, Vitti RP, Moraes RR, Bacchi A,
Spazzin AO. Acid Etching and Surface Coating
of Glass-Fiber Posts: Bond Strength and
Interface Analysis. Braz Dent J. 2016 Mar-
Apr;27(2):228-33.
2.
Schmitter M, Hamadi K, Rammelsberg P. Survival
of two post systems--five-year results of a
randomized clinical trial. Quintessence Int. 2011
Nov-Dec;42(10):843-50.
3.
Huber L, Cattani-Lorente M, Shaw L, Krejci I,
Bouillaguet S. Push-out bond strengths of
endodontic posts bonded with different resin-
Volume 03 Issue 12-2023
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American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
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2771-2753)
VOLUME
03
ISSUE
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P
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:
1-5
SJIF
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MPACT
FACTOR
(2021:
5.
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(2022:
5.
705
)
(2023:
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)
OCLC
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1121105677
Publisher:
Oscar Publishing Services
Servi
based luting cements. Am J Dent. 2007
Jun;20(3):167-72.
4.
Rathke A, Haj-Omer D, Muche R, Haller B.
Effectiveness of bonding fiber posts to root canals
and composite core build-ups. Eur J Oral Sci.
2009 Oct;117(5):604-10.
5.
Balbosh A, Kern M. Effect of surface treatment
on retention of glass-fiber endodontic posts.
J Prosthet Dent. 2006 Mar;95(3):218-23.
6.
Baba NZ, Goodacre CJ, Daher T. Restoration of
endodontically treated teeth: the seven keys to
success. Gen Dent. 2009 Nov-Dec;57(6):596-603.
7.
Silva GR, Santos-Filho PC, Simamoto-Júnior PC,
Martins LR, Mota AS, Soares CJ. Effect of post type
and restorative techniques on the strain and
fracture resistance of flared incisor roots. Braz
Dent J. 2011;22(3):230-7.
8.
Cardenas A, Siqueira F, Davila-Sanchez A, Gomes
GM, Reis A, Gomes JC. Four-year Follow-up of a
Direct Anatomical Fiber Post and Esthetic
Procedures: A Case Report. Oper Dent. 2016 Jul-
Aug;41(4):363-9.
