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Impact of Polymerization Technique and ZrO 2 Nanoparticle Addition on the Fracture Load of Interim Implant-Supported Fixed Cantilevered Prostheses in Comparison to CAD/CAM Material.
- Source :
- Dentistry Journal; Jun2022, Vol. 10 Issue 6, p102, 10p
- Publication Year :
- 2022
-
Abstract
- ZrO<subscript>2</subscript> nanoparticles (ZNPs) have excellent physical properties. This study investigated the fracture load of implant-supported, fixed cantilevered prosthesis materials, reinforced with ZNPs and various polymerization techniques, compared with conventional and CAD/CAM materials. Sixty specimens were made from two CAD/CAM; milled (MIL) (Ceramill TEMP); and 3D-printed (NextDent Denture 3D+). Conventional heat-polymerized acrylic resin was used to fabricate the other specimens, which were grouped according to their polymerization technique: conventionally (HP) and autoclave-polymerized (AP); conventionally cured and reinforced with 5 wt% ZNPs (HPZNP); and autoclave reinforced with 5 wt% ZNPs (APZNP). The specimens were thermocycled (5000 cycles/30 s dwell time). Each specimen was subjected to static vertical loading (1 mm/min) using a universal Instron testing machine until fracture. Scanning electron microscopy was used for fracture surface analyses. The ANOVA showed significant fracture load differences between all the tested groups (p = 0.001). The Tukey post hoc tests indicated a significant difference in fracture load between all tested groups (p ˂ 0.001) except HP vs. HPZNP and AP vs. MIL. APZNP had the lowest mean fracture load value (380.7 ± 52.8 N), while MIL had the highest (926.6 ± 82.8 N). The CAD/CAM materials exhibited the highest fracture load values, indicating that they could be used in long-term interim prostheses. Autoclave polymerization improved fracture load performance, whereas ZrO<subscript>2</subscript> nanoparticles decreased the fracture load performance of cantilevered prostheses. [ABSTRACT FROM AUTHOR]
- Subjects :
- PROSTHETICS
POLYMERIZATION
SCANNING electron microscopy
DEAD loads (Mechanics)
Subjects
Details
- Language :
- English
- ISSN :
- 23046767
- Volume :
- 10
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Dentistry Journal
- Publication Type :
- Academic Journal
- Accession number :
- 157716463
- Full Text :
- https://doi.org/10.3390/dj10060102