I. Muscle Wins concept
1 Close relationship between muscle function and occlusion
1. Tongue and occlusion
2. Masticatory muscles and occlusion
3. Neck muscles and occlusion
2 Nasal respiration is the key to occlusal improvement and
post-treatment stability
II. Clinical keys to Muscle Wins
1 Key points for patient examination ?what to examine
2 Key points for diagnosis and treatment
1. Importance of relationship between masticatory muscle activity and posterior occlusal vertical dimension
2. Data from a statistical analysis of cephalometric measurements in patients with long-term occlusal stability
3. The ideal occlusal relationship to be established at the end of active treatment based on the statistical data
3 Characteristic "Muscle Wins" treatment
1. Improvement of tongue behavior and perioral environment
2. Establishment of nasal respiration
3. Correction of the posterior occlusal vertical dimension
4. Normalization of masticatory muscle activity
5. Others
4 Criteria for extraction ?When to decide and on what basis
1. Timing for extraction/nonextraction decision
2. Points to consider in making an extraction/nonextraction decision
III. Muscle Wins cases
Angle Class II cases
Angle Class III cases
Angle Class I cases
● Deep bite
● Open bite
● Crowding
Cases with asymmetric posterior occlusal vertical dimension (asymmetric neck muscles)
● Open bite
● Deep bite