Evaluation of Microleakage at the Junction Between Combined Amalgam/Composite Resin Restorations Using Different Bonding Systems in Class II Cavities
Pesqui. bras. odontopediatria clín. integr
;
22: e210148, 2022. tab
Article
in English
| LILACS, BBO
| ID: biblio-1422278
ABSTRACT
Abstract Objective:
To evaluate the microleakage at the junction between amalgam-composite resin restorations using different bonding systems. Material andMethods:
In this in-vitro study, standard class II cavities were prepared on 40 human maxillary premolars. The axial and gingival floor depths of the cavities were 2 mm and 1 mm below (cementoenamel junction), respectively. The samples were divided into 4 groups (n = 10). In all groups, a layer of 1-mm thick amalgam was used as a coating for the initial part of the gingival floor. In group 1, no bonding system was used for amalgam restoration. In group 2, G-Premio Bond was applied. G-Premio bond + alloy primer and single bond + alloy primer were used in group 3 and group 4, respectively. The rest of the cavities in all groups were then repaired using FiltekZ250 composite. The samples were thermocycled at 500 rpm and immersed in 1% methylene blue solution for 24 hours to allow dye penetration. Once cut, the samples were placed under a stereomicroscope (40X) to determine the microleakage rate. Data analysis was carried out using post-hoc and Chi-square tests (p<0.05).Results:
The highest and lowest microleakage rate was related to groups 1 and 3, respectively. There was a significant difference between groups (1,2) and (1,3), and (1,4), and groups (2,3) (p<0.05).Conclusion:
The use of alloy primer and bonding could reduce the microleakage between the two restorations (AU).
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Dentin-Bonding Agents
/
Composite Resins
/
Dental Leakage
/
Dental Restoration, Permanent
Limits:
Humans
Language:
English
Journal:
Pesqui. bras. odontopediatria clín. integr
Journal subject:
Dentistry
Year:
2022
Type:
Article
Affiliation country:
Iran
Institution/Affiliation country:
Zanjan University of Medical Sciences/IR
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