Unique ID issued by UMIN | UMIN000020944 |
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Receipt number | R000024167 |
Scientific Title | A clinical application of a novel auxiliary skeletal anchorage device. |
Date of disclosure of the study information | 2016/04/01 |
Last modified on | 2017/09/29 09:22:18 |
A clinical application of a novel auxiliary skeletal anchorage device.
A clinical application of a novel auxiliary skeletal anchorage device.
A clinical application of a novel auxiliary skeletal anchorage device.
A clinical application of a novel auxiliary skeletal anchorage device.
Japan |
Malocclusion
Dental medicine |
Others
NO
In contemporary orthodontic treatment, miniscrews are frequently used for absolute anchorage because of their ease of placement and removal, lower surgical stress and lower discomfort. Miniscrews have enabled numerous orthodontic treatments that were difficult with conventional appliances: eg, mesial movement of a molar in a patient with oligodontia, distal movement of the maxillary and mandibular teeth, and improvement of an open bite caused by intruding posterior teeth. Currently, the usefulness of miniscrews has been conclusively shown with a high level of evidence. However, their disadvantage is an approximately 20% failure rate, which is primarily attributed to the low mechanical stability between the miniscrew and cortical bone and to the miniscrew's close proximity to the dental root. Prevention of miniscrew failure thus requires meeting 2 crucial conditions: increased mechanical stability, achieved by increasing the contact area between the miniscrew and the cortical bone, and prevention of root proximity by shortening the miniscrew. No currently available miniscrews or skeletal anchorage devices meet these conditions while remaining minimally invasive. Accordingly, we developed an auxiliary skeletal anchorage device that is used in conjunction with a miniscrew to increase its stability and ultimately helping to avoid root proximity with a shorter miniscrew. The purpose of this study is to evaluate the effectiveness of the auxiliary device in orthodontic treatment.
Safety
The failure rate of screw
・Evaluation about inflammation of periodontal tissue
・Quality of bone and teeth around the screw.
・Movement of the teeth during orthodontic therapy.
・Evaluation about pain and discomfort
・Distance between dental roots and the screw
・Movement of the screw during orthodontic therapy.
・Duration of therapy・Risk factor of failed screw
・Evaluation of oral hygiene
・Change of craniofacial morphology and stomatognathic function.
Interventional
Parallel
Non-randomized
Open -no one is blinded
Active
2
Treatment
Device,equipment |
Miniscrew with the auxiliary skeletal anchorage device group:patients with implantation of Novel miniscrew between the date of approval and March 2025.
period of intervention:During orthodontic treatment. (approximately 2-3 years)
Conventional miniscrew group: patients treated with Conventional miniscrew after the date of 2004.
0 | years-old | <= |
60 | years-old | > |
Male and Female
Patients will have been diagnosed with the application of miniscrew between the date of approval and March 2025.
・The patient who has orthodontic treatment history.
・The patient with lack of many teeth and extensive dental prostheses
100
1st name | |
Middle name | |
Last name | Shouichi Miyawaki |
Kagoshima University Graduate School of Medical and Dental Sciences
Department of Orthodontics
8-35-1, Sakuragaoka, Kagoshima, Japan
099-275-6250
miyawaki@dent.kagoshima-u.ac.jp
1st name | |
Middle name | |
Last name | Hiroshi Tomonari |
Kagoshima University Graduate School of Medical and Dental Sciences
Department of Orthodontics
8-35-1, Sakuragaoka, Kagoshima, Japan
099-275-6252
piroshi@dent.kagoshima-u.ac.jp
Department of Orthodontics , Kagoshima University Graduate School of Medical and Dental Sciences
Japan Society for the Promotion of Science
Other
NO
鹿児島大学病院(鹿児島県) Kagoshima University Medsical
and Dental Hospital
2016 | Year | 04 | Month | 01 | Day |
Unpublished
Preinitiation
2016 | Year | 04 | Month | 01 | Day |
2016 | Year | 04 | Month | 01 | Day |
2016 | Year | 02 | Month | 08 | Day |
2017 | Year | 09 | Month | 29 | Day |
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000024167
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