Figure 1.
(A) The flexural strength measurement. (B) Vickers Hardness measurement.
Figure 2.
Aesthetic orthodontic bracket made of permanent crown resin using 3D printing technology.
Figure 3.
SBS measurement in the experimental and control groups.
Figure 4.
Evaluation of ARI scores after debonding.
Table I.
Comparison of mean values of the shear bond strength of 3D Print bracket and metal brackets
| Shear bond strength (MPa) | |||
|---|---|---|---|
| Mean | Standard deviation | P* | |
| 3D Print Bracket-Transbond XT | 7.91A | 3.07 | |
| 3D Print Bracket-Tokuyama SuperLow | 13.07B | 5.31 | |
| <0.001 | |||
| Metal Bracket-Transbond XT | 15.03B | 6.66 | |
| Metal Bracket-Tokuyama SuperLow | 8.32A | 3.00 | |
Table II.
Distribution of Adhesive Remnant Index (ARI) Scores between the groups
| ARI Scores | ||||||
|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | P* | |
| 3D Print Bracket-Transbond XT | 0 | 0 | 1 | 13 | 1 | |
| 3D Print Bracket-Tokuyama SuperLow | 0 | 4 | 3 | 7 | 1 | 0.008 |
| Metal Bracket-Transbond XT | 1 | 4 | 6 | 3 | 1 | |
| Metal Bracket-Tokuyama SuperLow | 0 | 0 | 4 | 10 | 1 | |