1. American Association of Orthodontists 112th Annual Session Honolulu, Hawaii – May 4-8, 2012
The Inclined Plane (IP) – a helpful non-compliance device (a case presentation)

2. American Association of Orthodontists 112th Annual Session Honolulu, Hawaii – May 4-8, 2012
Authors:
Raphael Hoehr
Werner Noeke – private office, Meschede, Germany
Tim Noeke – University of Muenster, Germany
Kathrin Weyer – University of Frankfurt, Germany

3.
Purpose:
Persistency of deciduous upper incisors or primary shortage of space can lead to an reclination of permanent teeth or to pseudoprognathism with a class III relationship of the front teeth.

4. Fabian S., 7 years, reclination of 11, pseudoprognathism
Patient:
Fabian S., 7 years, reclination of 11, pseudoprognathism

5.
Material/Methods:
The acrylic inclined plane is easy to produce and fixed on the lower incisors with GIC as a semi-permanent non-compliance device. The retrusive and inclined upper incisor gets in contact to the IP when the patient starts the chewing process and slides down and forward. The angle of the inclined plane should be about 65° - 75 ° to the occlusal plane. Due to the protrusion of the incisor, the upper edge of the plane has to be adjusted when it gets in contact to the palatal tissue.

6. 14 days after incooperation, tooth 11 is unlocked.
14 days after incooperation, tooth 11 is unlocked.

7. Directly after removing the inclined plane.
Directly after removing the inclined plane.

8.
For retention a removable retainer with protrusion springs for the upper incisors and Eschler-arch for the lower incisors is used.

9. 4 months later: The result has improved.
4 months later: The result has improved.

10.
Results:
Generally a malocclusion is unlocked in an average treatment time of 1-3 weeks. In this case the treatment time was 14 days and there was e.g. a significant change of SNA, upper incisor-angle and upper lip profile.
For retention a removable retainer with protrusion springs for the upper incisors and Eschler-arch for the lower incisors is used.

11. Initial findings Final findings 30.05.11 30.01.12 Norm SNA 79.8° 81.4°
Upper lip profile has improved
Initial findings
Final findings
Norm
SNA
79.8°
81.4°
82°
Facial Convexity
1.9 mm
2.7 mm
2 mm
Interizisalwinkel
145.6°
133.4°
130°
OK 1er/ SPP
93.2°
106°
109°

12.
Conclusion:
These malocclusions can be corrected speedily in an easy way. Using the IP in early treatment is a very save, quick, cheap, robust and intermediate device without any wires, braces or occlusal bite-planes. The IP causes no trauma and is usually well accepted by the young patient.

13. For more Information: Werner Noeke, Raphael Hoehr Oesterweg Meschede, Germany phone:
This presentation is kindly supported by:
Scheu Dental, Iserlohn Germany, Kaniedenta, Herford Germany,