Orthodontics

1. GUANGXI MEDICAL UNIVERSITY
DR.HAN NYEIN AUNG
B.D.S (Ygn} , M.D.Sc, PhD (ORTHOGNATHIC SURGERY)
Adv Dip in orthodontics , F.I C.C.D.E
THE RISK OF MAL-PRACTICE ORTHODONTIC TREATMENT
Creating smile
Orthodontics

2. TRAINING OF
ORTHODONTICS
CME M.D.Sc ,PhD
Tx time Training time

3. Common consequences of mal-practice orthodontics:
Periodontal disease
Deep bite
Loss of anchorage
TMJ problem
Root resorption
Esthetic
Oral
health
stable

4. The First Error
(Periodontal damage)

5. 12 yrs 2011－09

11. Space in mix dentation
During the eruption of permanent teeth, the lateral incisor tooth follow
along the root of the central incisor. As the lateral incisor erupts, the space
can be closed or reduced
Wait and See

12. Space in mix dentation
After the four incisor teeth erupt and the apical foramen development is
basically complete, then the treatment is performed

14. The Second Error
(Deep Bite and Anchorage loss , root resorption )

15. 13yrs ：2013-12
CASE 1

16. 1.5 yrs. ElA 14,24,34,44
TMJ PROBLEM

17. SK 2
High Angle

18. 2、Deep OBOJ
3、ANCHORAGE LOSS
4、UN COODINATED ARCH
5、OH
6、TMJ PROBLEM
（POOR TOOTH MOVEMENT）

19. Tx STEP：
1、Wait and See TMJ for one month
2、TMJ ?，Twin-block，Mandibular protrusion
3、fix-ortho
4、open occlusion，flat curve of spee，adjust arc
form and occlusion

20. 2014.07 Twin-block

21. 2015.3 7m

22. Twinblock
pre Fix 4 months 7months

24. 2015.8.27 complete Tx

28. 26yrs；2014,5,10.
cc：crowding，gummy smile.
Last 2yrs orth Tx，ELA4s。
CASE 2

32. 1. psychology。
2. ElA 4s ,anchorage, torques control?
3. Vertical problem?
Awareness in this case

33. 2014.10.21
Within 5m

34. 2015.8.7
within：15m

40. 22yrs 2013.8.25
CASE 3

41. Last 4 yrs, ElA 4s

42. Sk 2
High angle

43. Tx STEP：
1、ELA 8s，TAD( retrusion)
2、Level and align ，open occlussion，arch
form coordination

44. 2013.10.22 2m

45. 2014.1.22 5m

46. 2014.5.18 9m

47. COMPLETE：
2014.11.29
Tx time：15ms

53. What is the next?

54. THE THIRD ERROR
(UNCORRECT TREATMENT PLAN)

55. 20yrs 2009-02－04

56. CC：Masticatory Problem

57. SK III
Low angle

60. 2009.04.03

62. Tx Plan：
ELA 35,45
Leveling and aligment
Improve Reversed Bite
crown 13 to 23 after completion

63. 2009.08.15 within 4m

64. 2010.11.10 within：18m

66. 2011.08 complete

68. Pre Post

69. Pre Post

70. 8yrs 2014-07－04
CASE 4

74. Tx plan：
1. Use light force ， intrusion of upper
anterior
2. Improve the anterior tooth protrusion,
eliminate occlusal trauma
3. Improve the anterior tooth protrusion,

75. 2014-07-28 0.5m

76. 2014-08-24 1.5 months

77. 2014-09-28
2.5months

78. 2014-10-28 3.5months

79. 2015-02-13 Tx Time 7months

81. pre ０.５m ３.５m
２.５m
１.５m 7m

82. pre ０.５m １.５m
３.５m ２.５m
7m

83. 2013,8 2014,9 2014,11

88. What is the next?

99. THE FORTH ERROR
BIOMECHANICAL CONSIDERATION

100. 22 yrs：2010-07
CASE 7

101. 20 months treatment
time
ELA 4s
Tomy self ligation

104. Problem list ：
1、Anchorage loss
3、No flat of curve of spee
4、OHI (Perio)
5、Bone and Root resorption
（Poor tooth movement）

105. 2008-11

109. 2009-03

110. 20个月

111. Treatment step：
1、correction of inclination of incisor
2、open occlusion
3、closing preexisting space
4、 correction of molar relation 5、
ELA 8s

112. 2011-05
Tx Time：
10months

116. In Clinic ，retreatment case
Common Chief Complain：
（1）relax
（2）mastication problem
（3）TMJ and perio problem
（4）aesthetic problem

117. conclusion
Common error：
1.incorrect treatment plan, incorrect force control,
2. Lack of basic technology and orthodontic concepts, inaccurate bracket
positioning, and wrong archwire selection
3. Poor control over tooth movement.
The most common ones are loss of anchorage, lack of bite opening, and arch-
form Co-ordination.

118. 4. ELA 4S, in secondary correction , requires extraction of 8 teeth, using
implant anchorage to move dentition and correction of molar relation.
5. Retreatment patients has many psychological needs , so, the doctor who
receives the second visit needs to pay special attention!

119. Orthodontics
Creating smile
THX