References

1 Bennett J, McLaughlin R P 1997 Orthodontic management of the dentition with the preadjusted appliance. Isis Medical Media, Oxford (ISBN 1 899066 91 8) pp. 50-51. Republished in 2002 by Mosby, Edinburgh (ISBN 07234 32651)

2 Bennett J, McLaughlin R P 1997 Orthodontic management of the dentition with the preadjusted appliance. Isis Medical Media, Oxford (ISBN 1 899066 91 8) pp. 200-205. Republished in 2002 by Mosby, Edinburgh (ISBN 07234 32651)

3 Arnett G W, Jalic J S, Kim J et al 1999 Soft tissue cephalometric analysis: diagnosis and treatment planning of dentofacial deformity. American Journal of Orthodontics and Dentofacial Orthopedics 116:239-253

4 The American Board of Orthodontics Calibration Kit. July, 2000

Fig. 10.29

Fig. 10.23

Fig. 10.26

CASE MB

Fig. 10.23

A female non-extraction case, aged 12.11 years, with a high-angle pattern (MM 37°).

Molar relationship was 4 mm Class II on the right and 2 mm Class II on the left. All the teeth were developing normally, except the upper left third molar. Arch form was assessed as ovoid. It was decided to manage the case on a non-extraction basis, with upper anterior torque and lower incisor enamel reduction.

Fig. 10.26

Standard metal brackets were used with .016 HANT wires to commence tooth alignment. The patient was asked to wear a combination headgear during evenings and nights. Lower enamel reduction was delayed until correct upper and lower incisor torque had been achieved, which would reveal the amount of reduction necessary.

Fig. 10.29

Fig. 10.33

M.B. Beginning 12.11 years 8/22796

Fig. 10.25

Fig. 10.24

Fig. 10.28

Fig. 10.31

Fig. 10.27

Fig. 10.30

Fig. 10.33

Fig. 10.24

SNA/75 ° SNB/71 ° ANB/ 4° A-N _L_ FH -5 mm Po-N _L FH -16 mm WITS 0 mm GoGnSN Z50 ' FM/39* MM / 37 • _1 to A-Po 7 mm 1 to A-Po 3 mm 1_ to Max Plane. 98 ° 1 to Mand Plane/ 84 »

Fig. 10.28

Fig. 10.31

M.B. Beginning 12.11 years 8/22796

Fig. 10.25

Fig. 10.35

Fig. 10.38

After 6 months of treatment, steel .019/.025 rectangular wires were placed. The patient was asked to wear a right side Class II elastic (100gm) to commence correction of the right side occlusion and the midlines. Archwires were placed flat, without additional torque.

After 3 months of treatment, upper and lower rectangular HANT wires are in place.

Fig. 10.35

Fig. 10.38

Fig. 10.41

Subsequently, after 9 months of treatment, additional torque was added to the upper wire (Figs 10.41 to 10.43, and 10.46).

It became clear that lower enamel reduction was needed. Separation and then enamel reduction (Fig. 10.46) of lower incisors was carried out after 10 months of treatment, and first molar bands and upper canine brackets were repositioned.

Upper and lower rectangular IIANT wires were used for 1 month to re-level and align after enamel reduction and bracket repositioning,

Fig. 10.41

Fig. 10.40

Fig. 10.37

Fig. 10.43

Fig. 10.46

Fig. 10.39

Fig. 10.42

Fig. 10.36

Fig. 10.40

Fig. 10.43

Fig. 10.37

Fig. 10.46

Fig. 10.47

Fig. 10.53

Fig. 10.50

Fig. 10.56

Normal settling methods were used, with lower bonded and upper removable retainers.

Fig. 10.50

Fig. 10.53

Fig. 10.47

The case after appliance removal. Active treatment time was 15 months.

Fig. 10.56

Fig. 10.49

Fig. 10.55

Fig. 10.52

Fig. 10.48

Fig. 10.51

Fig. 10.49

Fig. 10.52

Fig. 10.57

Fig. 10.54

Fig. 10.55

SNA

73

0

SNB

70

ANB/ 3

A-N FH

-7

mm

Po-N FH

-21

mm

WITS

-1

mm

GoGnSN

50

FM

40

MM

38

1 to A-Po

8

mm

1 to A-Po

4

mm

1 to Max Plane

105

0

1 to Mand Plane

90

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