Treatment timing

Question 1

Best time for RME + evidence

Answer 1

Baccetti, 2005:
before peak CS 1-2 more sk. transverse change, CS 3-6 more dentoalveolar

Melson, 1975:
Interdigitation of midpalatal sutures

Question 2

Best time for Cl. II GM

Answer 2

Baccetti, 2005
CS 3-4: peak: 5.4mm
CS 1-2: 2.5/stage
CS 4-5: 1.6mm

Question 3

Reason for Interceptive ortho

Answer 3

1) Prevent irreversible ST/bone/dental changes e.g gingival recession

2) Fav. environment of growth - remove CRMI slide
- avoid unfav. adaptative condylar and mn growth pattern

3) Simply phase II tx
mild/mod case- increase success rate of camou
severe cases - reduce severity/ extent and morbidity of sx

4) Psy benefit

Question 4

Best time for PFM + evidence

Answer 4

Franchi, 2004 CS 1-2

Proffit 2007: Defer till U6s, U2-2 erupted for anchorage control and control of inclination to control OJ