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Orthodontic Bone Anchors. Parameters for Success. 1. OBA history – MK I MK II. 2. Delayed versus immediate loading. 3. Common indications. 4. Conclusion. + tube. 1999. 2002. 2000. 2001. + bracket. 2000. 2001. 2002. - slot.

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orthodontic bone anchors

Orthodontic Bone Anchors

Parametersfor Success

slide2

1. OBA history – MK I MK II

2. Delayed versus immediate loading

3. Common indications

4. Conclusion

slide3

+ tube

1999

2002

2000

2001

slide4

+ bracket

2000

2001

2002

slide6

Publications on MK I

Mommaerts M, Correia P, Nuttens S. Experiencia clinica com o “Ortho Bone Anchor – OBA” – Relatorio Preliminar

Rev Port Estomat Med Dent Cir Maxilofac 42: 131-135, 2001

Mommaerts MY, Michiels ML, De Pauw GA.

A 2-year outcome audit of a versatile orthodontic bone anchor.

J Orthod. 32: 175-81, 2005

results of mk i study
Results of MK I study
  • Placement between 2000 & 2002
  • Follow-up till 2004
  • 18 patients
  • 35 OBA’s

8,6% premature loss

conclusions of mk i study
Conclusions of MK I study

Bayonet shaping of neck

Diminishing height of coronal screw head

Subtitle

Texturising of fixation part

Protection by fixed appliances

slide9

1. OBA history

2. Delayed versus immediate loading with MK II

3. Parameters for success

4. Conclusion

location
Location

Mandible: 31 4

Maxilla: 13 11

Removed OBAs 2002-2005

Distal to 2,3,4

Distal to 5,6,7

Piriform aperture

Zygomatic crest

delayed versus immediate loading
Delayed versus immediate loading

Removed OBAs

Always 5mm coronally

Years in situ

#

Premature loss

Mobile screws upon removal

Immediate mandible

23

15

1

2 mob+infl

1 lost mob

5mm (30): 5

7mm (13): 4

Delayed mandible

30

20

0

5mm (46): 7

7mm (8): 0

Always coronal

Immediate maxilla

7

5

0

0

Delayed maxilla

35

19

0

3 mob+infl

5mm (11): 1

7mm (4): 0

No inflam response

slide12

1. OBA history

2. Delayed versus immediate loading

3. Common indications

4. Conclusion

slide17

1. OBA history

2. Delayed versus immediate loading

3. Indications

4. Conclusion MK II study

coronal 5mm screws are vulnerable
Coronal 5mm screws are vulnerable

2 important

No big difference between immediate & delayed loading in mandible

simple hook workhorse
Simple hook = workhorse

March 2003

October 2005