Assessment of a highly-filled flowable composite for the repair of indirect composites.
J Oral Sci
; 66(1): 42-49, 2024.
Article
in En
| MEDLINE
| ID: mdl-38233153
ABSTRACT
PURPOSE:
To compare the shear-bond-strength (SBS) of a highly-filled-flowable composite (HFFC) and a paste-type composite for indirect composite repair and to evaluate the effect of different surface treatments (ST), concerning the composite repair protocol.METHODS:
Eighty-four 5 × 5 × 2 mm cylindrical specimens were prepared using Gradia Plus and SR Nexco indirect composite materials. The samples were thermocycled 5,000 times. According to the ST, the samples were divided into three groups (control, bur, and air-abrasion). After ST, the sample subgroups were divided into two sub-groups according to the repairmaterial:
paste-type composite and HFFC (n = 7). Another 5,000 cycles of aging were performed. SBS values were measured with a universal testing machine (Shimadzu, Japan). Shapiro-Wilk, 3-way ANOVA, and Tukey HSD test were used to evaluate data (P < 0.05).RESULTS:
ST was considered significant for SBS (P < 0.001). The mean values were (13.9 ± 5.7), (17.0 ± 6.4), (20.4 ± 4.9) MPa for the control, bur and phosphoric acid, and air-abrasion groups, respectively. The surface treatment and repair material interaction was considered significant for SBS (P = 0.044). The highest mean bond strength (24.5 ± 4.5 MPa) was observed for the interaction of SR Nexco, air-abrasion ST, and HFFC repair.CONCLUSION:
Repairing with HFFC following air abrasion might enhance the SBS for indirect composite restorations.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Dental Bonding
/
Air Abrasion, Dental
Type of study:
Guideline
Country/Region as subject:
Asia
Language:
En
Journal:
J Oral Sci
Journal subject:
ODONTOLOGIA
Year:
2024
Document type:
Article
Country of publication:
Japan