Mechanical properties of three-dimensionally printed titanium plates used in jaw reconstruction: preliminary study.
Int J Oral Maxillofac Surg
; 51(6): 754-761, 2022 Jun.
Article
in En
| MEDLINE
| ID: mdl-34629260
The aim of this study was to compare the mechanical properties of three-dimensionally (3D)-printed and conventional surgical plates used for the repair of maxillary or mandibular defects under the same experimental conditions, and to provide experimental evidence for the future application and clinical trial of 3D-printed individualized surgical plates. For the experimental group, two groups of surgical plates with thicknesses of 2.0 mm and 2.5 mm were designed and 3D-printed by electron beam melting, using Ti-6Al-4V as raw material. Conventional commercially available surgical plates with the same thickness were adopted as the control group. A Vickers hardness tester and universal testing machine were used to measure the mechanical properties of the plates (hardness, bending strength, tensile strength, and yield strength). The mechanical properties of 3D-printed surgical plates were significantly better than those of conventional surgical plates of the same thickness (P < 0.001). Comparing the surgical plates of different thickness, the 2.5 mm-thick plates had the highest bending strength in the experimental group (P < 0.001) and the best hardness (P < 0.001), bending strength (P = 0.001), tensile strength (P = 0.001), and yield strength (P = 0.001) in the control group. No statistical difference was found between the two kinds of plates in the experimental group in terms of hardness (P = 0.060), tensile strength (P = 0.096), and yield strength (P = 0.496). The 3D-printed surgical plates have better mechanical properties than the conventional ones.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Titanium
/
Printing, Three-Dimensional
Type of study:
Clinical_trials
Limits:
Humans
Language:
En
Journal:
Int J Oral Maxillofac Surg
Journal subject:
ODONTOLOGIA
Year:
2022
Document type:
Article
Affiliation country:
Country of publication: