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Table 3 Average surface roughness (Sa values) of bracket slot (measurement in micrometre)

From: Evaluation of surface roughness of the bracket slot floor—a 3D perspective study

Group A—3M Unitek

Group B—Ormco

Group C—Ortho Organizer

Group D—American Orthodontics

Mesial slot (A)

Distal slot (B)

Mesial slot (A)

Distal slot (B)

Mesial slot (A)

Distal slot (B)

Mesial slot (A)

Distal slot (B)

1.111

0.968

0.371

1.127

1.85

2.459

0.807

0.852

7.875

6.011

2.162

0.548

3.572

2.107

0.663

0.917

0.52

0.778

1.111

1.291

1.834

3.12

0.034

0.298

7.522

7.899

0.446

0.341

2.148

2.132

0.769

0.717

10.329

5.788

1.427

1.472

2.095

1.934

0.363

0.641

0.814

0.813

0.456

0.701

2.32

1.96

0.877

1.09

0.487

1.122

0.652

0.502

2.401

2.346

0.433

0.292

2.055

5.619

2.454

2.242

2.349

1.516

0.722

0.687

0.652

1.117

0.426

0.369

2.205

2.332

1.704

1.537

3.378

3.751

0.786

0.771

2.781

1.951

1.07

1.124

0.921

1.636

0.423

0.683

2.386

1.805

0.423

0.446

0.531

3.801

0.528

0.292

2.198

1.993

0.425

0.387

5.532

3.773

0.601

0.597

3.215

2.171

0.805

0.999

1.1

6.528

2.46

1.743

1.819

2.228

1.109

1.121

0.741

0.661

0.53

0.35

1.799

2.058

0.34

0.403

0.457

1.425

2.736

3.228

1.797

2.163

0.656

0.917

4.971

6.754

0.531

0.42

2.863

1.622

1.181

0.624

6.007

4.548

0.803

0.521

2.184

1.401

1.006

0.833

0.695

0.789

0.426

0.335

1.886

1.521

0.526

0.522

0.393

5.74

3.56

4.02

2.434

2.745

0.843

0.527