14 Principle of Spring Design | MSI Ortho Academy

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06 Biomechanics

Chapter 1 : Basic Principle in Biomechanics ⎥2025

1 10.Center of Mass (19:05)
2 11. Center of Resistance (15:31)
3 12.Handling of Force (17:12)
4 13.Center of Rotation (20:22)
5 14.Type of Tooth Movement (16:17)
6 15.Moment of Force and Moment of Couple (14:35)
7 16.Moment of Force (14:38)
8 17. Moment of Couple (14:46)
9 18.Mc and Clinical Application (14:21)
10 19.Force System (14:07)
11 20.Equivalent Force System (12:54)
12 1.Force System and Clinical Application (16:10)
13 2.Equivalent Force System and Clinical Application (12:00)
14 3.Moment Force Ratio (8:05)
15 4.M/F Ratio and Crot (14:18)
16 5.M/F Ratio and Type of Tooth Movement (13:46)
17 6.Type of Tooth Movement Classification (16:40)
18 7. Clinical situation of Static Equilibrium 1 (10:54)
19 8.Clinical situation of Static Equilibrium 2 (11:16)
20 9.Clinical situation of Static Equilibrium 3 (11:48)
21 10.Clinical situation of Static Equilibrium 4 (19:12)
22 11.Clinical situation of Static Equilibrium 5 (11:18)
23 12.Clinical situation of Static Equilibrium 6 (9:24)

Chapter 2 : Creative Wire Bending ⎥2025

24 13 Introduction (14:38)
25 14.One Couple Force System (15:05)
26 15.Two Couple Force System 1 (10:27)
27 16.Two Couple Force System 2 (11:21)
28 17.Multiple Couple Force System (12:42)
29 18. TYPE OF BASIC CREATIVE WIRE BENDING (10:54)
30 19.Creative V-Bend Analysis (9:10)
31 20 Creative V-Bend Analysis 2 (13:20)
32 1.Creative V-Bend Analysis 3 (9:35)
33 2. Creative V-Bend Analysis 4 (11:51)
34 3.Step Bend (11:14)
35 4.V-S Bend (10:59)
36 5.Equilibrium and V-S Bend (9:59)
37 6.Clinical Application 1 (19:51)
38 7.Clinical Application 2 (12:09)

Chapter 3 : Loop amd Spring Design ⎥2025

39 1 Introduction (12:18)
40 2. Type of Spring and Loop (16:07)
41 3. T-Loop (17:45)
42 4. Neutral Activation (14:23)
43 5. Clinical Application (19:27)

Chapter 4 : Anchorage ⎥2025

44 6.Introduction (11:42)
45 7. Concept of Anchorage 1 (15:19)
46 8 Concept of Anchorage 2 (14:05)
47 9. Anchorage Concept Summary (12:37)
48 10.Anchorage Management and SCA (17:21)
49 11.Type of Anchorage (13:51)
50 12.Anchorage Classification (12:40)
51 13. Clinical Application (16:20)
52 14. Clinical Application-Anchorage Requirement (18:55)
53 15.Clinical Application-Anchorage Requirement 2 (12:16)
54 16.Anchorage Requirement - Crowding (9:38)
55 1.Anchorage Requirement - U1 Inclination (15:42)
56 2.Anchorage Requirement U1 Inclination 2 (16:38)
57 3.Anchorage Requirement - Midline deviation (7:04)
58 4.Anchorage Requirement - Occlusal Relationship (18:23)
59 5.Anchorage Requirement - Force Require to move tooth (12:14)
60 6.Source of Anchorage (16:32)
61 7. Source of Anchorage - Biomechanic (17:05)
62 8.Source of Anchorage - Stop and loop (13:24)
63 9. The Response Anchor Unit and Movement Unit to Orthodontic Force (10:30)
64 10. Source of Anchorage - Biological Properties (15:50)
65 11. Source of Anchorage - Growth (15:11)
66 12.Source of Anchorage - FA (16:45)
67 13.Source of Anchorage - Sliding or non sliding mechanic (20:44)

Chapter 5 : Friction ⎥2025

68 14.Introduction (14:53)
69 15.Friction-affecting parameter (11:40)
70 16. Force delivery (12:47)
71 17 . Anchorage - Summary (17:08)
72 9.Friction -Type of friction (16:59)
73 10.Friction - Critical Angle (13:39)
74 11.Friction -How to avoid binding effect?? (16:06)
75 12.FRiction - Clinical Application (17:13)
76 13.Friction - Ligation (13:10)
77 14.Slot Size and Wire (7:46)

Chapter 6 : Biology of Tooth Movement ⎥2025

78 2 Introduction (15:22)
79 3.Theory of Tooth Movement (14:40)
80 4.Physiologic Response to Sustained Force (11:18)
81 5.Physiologic Response to-Light Force vs Heavy Force (17:31)
82 6.Physiologic Response to Force Decay (12:31)
83 7.Clinical Application (10:06)
84 8.Medical Disorder to Orthodontic Force (11:14)
85 15.FAQ (18:47)

Chapter 7 : Stimulating Biological Response⎮2025

86.1.I-Angel (แทรก) (21:42)
87. 2.Introduction Biology of Tooth Movement (14:38)
88.3.Tooth Movement Theory (15:01)
89.4.Biological Response (12:28)
90.5.Theories on Initiation of Tooth Movement (14:31)
91.6.Catabolic Phase The Biphasic Theory (16:10)
92.7.Optimizing Orthodontic Tooth Movement/ Efficacy and Efficiency (15:15)
93.8.Why traditional mechanics fail to accelerate treatment. (15:27)
94.9.Artificial Pathway - Physical Stimulation (15:08)
95.10.Natural Pathway (Surgical) ODO (12:38)
96.11.ODO Classification (15:08)
97.12.Selective Alveloar Perforations (SAPs) (14:51)
98.13.The SAPs Experiment (14:31)
99.14.Goals for SAPs in Catabolic Effects During Orthodontic Treatment (When) (15:13)
100.15.Decrease the possibility of root resorption with SAPs (10:47)
101.16.SAPs Indication (11:53)
102.17.Anabolic Effect Property (16:29)
103.18.Pathological Cortical Drifting in Response to Pathology (14:20)
104.19.Expand the Boundaries of Existing Alved ar bone (15:52)
105.20.Stimulate Bone Formation in the Area of Bone Loss (15:25)
106.21.Symmetrical Expansion in Adults (Anabolic Effect) (16:20)

2025⎮Hand Out Biomechanic (PDF)

9.7 Stimulating biological response
9.7.1 Different Methods of Accelerating Tooth Movement
9.7.2 SAP Clinical
9.7.3 Guide for Selective Alveolar Perforations (SAPs)

Chapter 1 : Basic Principle in Biomechanics ⎥2023

1 Rule of Mass (26:15)
2 Forces Concept in Orthodontics (24:46)
3 Type of Tooth Movement (21:02)
4 Moment of Forces (24:31)
5 Moment of Couple (21:43)
6 Force System and Equivalent force System (27:04)
7 Moment to Force Ratio (26:57)
8 Static Equilibrium (30:18)
9 Static Equilibrium 2 and example (18:25)
1 Rule of Mass (26:15)
2 Forces Concept in Orthodontics (24:46)
3 Type of Tooth Movement (21:02)
4 Moment of Forces (24:31)
5 Moment of Couple (21:43)
6 Force System and Equivalent force System (27:04)
7 Moment to Force Ratio (26:57)
8 Static Equilibrium (30:18)
9 Static Equilibrium 2 and example (18:25)

Chapter 2 : The Creative Wire Bending in Orthodontics ⎥2023

10 Creative V-Bend Wire Bending (52:02)
11 Bending free & The fact of V- Bend (24:52)
12 Classification of Force System (37:06)
13 Exercise for V-Bend Application (27:27)
10 Creative V-Bend Wire Bending (52:02)
11 Bending free & The fact of V- Bend (24:52)
12 Classification of Force System (37:06)
13 Exercise for V-Bend Application (27:27)

Chapter 3 : Loop and Spring Design ⎥2023

14 Principle of Spring Design (16:28)
15 Loop Classification and Experiment (38:19)
16 Sliding vs Non-Sliding (11:27)
17 Friction (28:11)
18 Friction Management (19:49)
14 Principle of Spring Design (16:28)
15 Loop Classification and Experiment (38:19)
16 Sliding vs Non-Sliding (11:27)
17 Friction (28:11)
18 Friction Management (19:49)

Chapter 4 : Anchorage in Orthodontics ⎥2023

19 Anchorage Concept (30:28)
20 Anchorage Classification and Objective (12:56)
21 Determinant of Anchorage Requirement (24:16)
22 Source of Anchorage (36:01)
19 Anchorage Concept (30:28)
20 Anchorage Classification and Objective (12:56)
21 Determinant of Anchorage Requirement (24:16)
22 Source of Anchorage (36:01)

Chapter 5 : Biologic Basis of Orthodontic Therapy ⎥2023

23 Tooth Supporting Tissue and The Theories of Tooth Movement (38:51)
25 Physiologic response to sustained force against a tooth (13:52)
26 Tooth movement efficiency & duration of force (18:28)
27 Relevant Medical Disorders to Orthodontic Force & Theories of tooth eruption (19:44)
24 Active Stabilizer (8:04)
23 Tooth Supporting Tissue and The Theories of Tooth Movement (38:51)
25 Physiologic response to sustained force against a tooth (13:52)
26 Tooth movement efficiency & duration of force (18:28)
27 Relevant Medical Disorders to Orthodontic Force & Theories of tooth eruption (19:44)
24 Active Stabilizer (8:04)

Hand out ⎥2023

1 Basic Principle Mechanic
2 Creative Wire V-bend
3 Loop & Spring Design
4 Hand out of Anchorage in Orthodontics
5 Biologic Basis of Orthodontic Therapy
1 Basic Principle Mechanic
2 Creative Wire V-bend
3 Loop & Spring Design
4 Hand out of Anchorage in Orthodontics
5 Biologic Basis of Orthodontic Therapy

8 Selective Alveolar (De)corticotomy 2021

68 Introduction to SAD (13:40)
69 Rapid Accelerated Phenomenon (RAP) (13:43)
70 Window of opportunity from SAD (16:59)
71 The Design of Decortication (10:31)
72 Conclusion (14:36)

Hand out (Download) 2021

9.1 basic principle (20) AVS 4 PDF
9.3 & 9.4 loop design & sliding non sliding mech (22) AVS PDF
9.5 anchorage (23) AVS 4 PDF
9.6 biologic (24) AVS 4 PDF
9.7 SAD PDF
9.8 Biomech Upright molar (25) AVS 4 PDF

ติว ก่อนสอบ ⎥2021

1 Moment of force (10:01)
2 Force system (10:29)
3 M/F ratio (10:54)
4 Segmented arch (9:08)
5 Continuous arch FS calculation (11:19)
6 Equivalent force system (11:57)
7 Anchorage (10:02)
8 Anchorage Classification (16:31)
9 Friction (20:07)
10 Clinical Application. (17:37)

7 Biomechanics 2023 (Live)

7.1 Introduction (16:03)
7.2 Center of mass (10:53)
7.3 Center of resistance (11:20)
7.4 Force (12:23)
7.5 Handling of force (14:50)
7.6 Line of force (18:41)
7.7 Center of rotation (21:19)
7.8 Moment of force and moment of couple 1 (15:42)
7.9 Moment of force and moment of couple 2 (10:11)
7.10 Moment of force (20:16)
7.11 Moment of couple (22:52)
7.12 Mc in Removable appliance (12:12)
7.13 Force system (14:47)
7.14 Equivalent force system (12:19)
7.15 M/F ratio (20:48)
7.16 Static equilibrium (11:13)
7.17 Pre torque (10:30)
7.18 Clinical app 1 (12:16)
7.19 Clinical app 2 (13:41)
7.20 Clinical app 3 (7:58)
7.1 Introduction (16:03)
7.2 Center of mass (10:53)
7.3 Center of resistance (11:20)
7.4 Force (12:23)
7.5 Handling of force (14:50)
7.6 Line of force (18:41)
7.7 Center of rotation (21:19)
7.8 Moment of force and moment of couple 1 (15:42)
7.9 Moment of force and moment of couple 2 (10:11)
7.10 Moment of force (20:16)
7.11 Moment of couple (22:52)
7.12 Mc in Removable appliance (12:12)
7.13 Force system (14:47)
7.14 Equivalent force system (12:19)
7.15 M/F ratio (20:48)
7.16 Static equilibrium (11:13)
7.17 Pre torque (10:30)
7.18 Clinical app 1 (12:16)
7.19 Clinical app 2 (13:41)
7.20 Clinical app 3 (7:58)

7.1 Creative V-bend 2023 (LIVE)

7.21 Introduction (13:51)
7.22 Force system (16:39)
7.23 One couple force system (21:53)
7.24 Two couple force system (19:49)
7.25 Multiple couple force system (10:56)
7.26 Type of basic creative v-bend (14:37)
7.27 Creative V-bend analysis (19:05)
7.28 Step bend (12:26)
7.29 VS Bend (12:42)
7.30 VS Bend 2 (14:04)
7.31 Combination of step bend and v-bend (17:24)
7.32 V-bend analysis (14:45)
7.33 Static equilibrium (13:55)
7.34 Static equilibrium and v-bend (16:38)
7.35 Summary of v-bend static equilibrium (13:52)
7.36 Clinical application (18:20)
7.37 Clinical application (11:05)
7.21 Introduction (13:51)
7.22 Force system (16:39)
7.23 One couple force system (21:53)
7.24 Two couple force system (19:49)
7.25 Multiple couple force system (10:56)
7.26 Type of basic creative v-bend (14:37)
7.27 Creative V-bend analysis (19:05)
7.28 Step bend (12:26)
7.29 VS Bend (12:42)
7.30 VS Bend 2 (14:04)
7.31 Combination of step bend and v-bend (17:24)
7.32 V-bend analysis (14:45)
7.33 Static equilibrium (13:55)
7.34 Static equilibrium and v-bend (16:38)
7.35 Summary of v-bend static equilibrium (13:52)
7.36 Clinical application (18:20)
7.37 Clinical application (11:05)

7.2 Lopp and spring design 2023 (Live)

7.38 Loop and spring design (17:57)
7.39 Moment force ratio (15:45)
7.40 Spring objectives (19:27)
7.41 T- loop (19:32)
7.42 T-loop adjustment (14:58)
7.43 Neutral Activation (19:39)
7.44 Sliding and non-sliding mechanics (13:58)
7.45 Comparison (14:23)
7.38 Loop and spring design (17:57)
7.39 Moment force ratio (15:45)
7.40 Spring objectives (19:27)
7.41 T- loop (19:32)
7.42 T-loop adjustment (14:58)
7.43 Neutral Activation (19:39)
7.44 Sliding and non-sliding mechanics (13:58)
7.45 Comparison (14:23)

7.3 Friction 2023 (Live)

7.46 Introduction (11:35)
7.47 Type of friction (12:02)
7.48 Bracket and friction (13:17)
7.49 Slot width and width (13:54)
7.50 Force delivery (11:40)
7.51 Friction in SL (10:50)
7.52 SL and normal bracket (14:44)
7.53 Binding effect (12:15)
7.54 Secure ligation (11:43)
7.46 Introduction (11:35)
7.47 Type of friction (12:02)
7.48 Bracket and friction (13:17)
7.49 Slot width and width (13:54)
7.50 Force delivery (11:40)
7.51 Friction in SL (10:50)
7.52 SL and normal bracket (14:44)
7.53 Binding effect (12:15)
7.54 Secure ligation (11:43)

7.4 Anchorage in orthodontics 2023 (Live)

7.55 Introduction (19:12)
7.56 Anchorage concept (17:34)
7.57 Anchorage concept 2 (9:11)
7.58 Bio-reengineering (13:18)
7.59 Anchorage Classification (15:41)
7.60 Space gaining (9:46)
7.61 Anchorage Requirement (18:39)
7.62 Source of Anchorage (13:47)
7.63 Anchorage Management (17:48)
7.64 Skeletal anchorage (12:30)
7.65 Anchorage Supplement (14:58)
***Anchorage PDF 2023
7.55 Introduction (19:12)
7.56 Anchorage concept (17:34)
7.57 Anchorage concept 2 (9:11)
7.58 Bio-reengineering (13:18)
7.59 Anchorage Classification (15:41)
7.60 Space gaining (9:46)
7.61 Anchorage Requirement (18:39)
7.62 Source of Anchorage (13:47)
7.63 Anchorage Management (17:48)
7.64 Skeletal anchorage (12:30)
7.65 Anchorage Supplement (14:58)
***Anchorage PDF 2023

7.5 Biology of tooth movement 2023

7.66 Biology of tooth movement (12:52)
7.67 Movement direction (12:24)
7.68 Active Stabilization (17:06)
7.69 Tooth movement and duration of force (18:08)
7.70 Tooth movement acceleation (15:29)
7.71 Reduced treatment time (15:08)
7.72 SAC (19:16)
*** Stimulating biological response PDF
7.66 Biology of tooth movement (12:52)
7.67 Movement direction (12:24)
7.68 Active Stabilization (17:06)
7.69 Tooth movement and duration of force (18:08)
7.70 Tooth movement acceleation (15:29)
7.71 Reduced treatment time (15:08)
7.72 SAC (19:16)
*** Stimulating biological response PDF

7.6 Upright molar 2023

7.73 Mandibular uprighting (16:30)
7.74 Clinical Application (14:34)
7.75 Open space (25:45)
*** Upright molar PDF
7.73 Mandibular uprighting (16:30)
7.74 Clinical Application (14:34)
7.75 Open space (25:45)
*** Upright molar PDF

*** V-Bend PDF 2023

Creative V-bend
Creative V-bend

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14 Principle of Spring Design

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