RT Journal Article
T1 Thermo-mechanical behavior of alternative material combinations for  full-arch implant-supported hybrid prostheses with short cantilevers
A1 Haroyan-Darbinyan, Evelina
A1 Romeo Rubio, Marta
A1 Río Highsmith, Jaime Del
A1 Lynch, Christopher D.
A1 Castillo De Oyague, Raquel
AB Objectives: To compare the fracture resistance (FR) of three combinations of materials for full-arch maxillary implant-supported hybrid prostheses (HPs) with short cantilevers (≤ 10 mm). Methods: Maxillary HPs were fabricated and classified as follows (n = 5 each): Group-1 (CC-A, control): acrylic resin-veneered Co-Cr frameworks; Group-2 (CF-A): acrylic-resin-veneered carbon-fiber mesostructures; and Group-3 (CF-R): composite-resin-veneered carbon-fiber frames. Specimens were thermal-cycled (5,000 cycles; 5 ◦C–55 ◦C; dwell time: 30 s). Vertical loads were applied until failure, first at the 10-mm-long cantilever (LC), and, afterwards, at the anterior region (AR), using a universal testing machine (crosshead speed: 0.05 mm/s). The fracture pattern was assessed by stereomicroscope and SEM. The one-way ANOVA, the Bonferroni, and the in dependent samples t tests, were run (α= 0.05). Results: At LC, CF-A, and CC-A samples exhibited the highest FR values (p< 0.001), showing no differences to each other. At AR, CC-A specimens recorded the highest FR, followed by CF-A samples (p< 0.001). CF-R HPs displayed the lowest FR at both locations (p< 0.001). The only group with differences between the tested sites was the CC-A, the AR being more resistant (p< 0.001). Most CC-A and CF-A HPs failed cohesively. CF-R pros theses mainly failed adhesively. Conclusions: Maxillary HPs with short cantilevers (≤ 10 mm) made of Co-Cr or carbon-fiber veneered with acrylic resin demonstrated an adequate mechanical resistance (> 900 N). Clinical significance: For maxillary HPs with cantilevers up to 10 mm, acrylic-veneered carbon- fiber meso structures may be recommended, whereas coating carbon-fiber frames with composite resin seems not suitable.
PB Elsevier
SN 0300-5712
YR 2023
FD 2023-05
LK https://hdl.handle.net/20.500.14352/93992
UL https://hdl.handle.net/20.500.14352/93992
LA eng
NO Haroyan-Darbinyan E, Romeo-Rubio M, Río-Highsmith JD, Lynch CD, Castillo-Oyagüe R. ‘Thermo-mechanical behavior of alternative material combinations for full-arch implant-supported hybrid prostheses with short cantilevers’. J Dent 2023;132:104470.
DS Docta Complutense
RD 25 jun 2025