Patients who undergo orthodontic treatment for crowding
Conditions
Interventions
To orthodontically treat the patients with passive self-ligation system with new standard square slots "ORIGAMI SL bracket"
Sponsors
Ono Takashi
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) Patients with anterior crowding 2) Patients with the following conditions (1) Arch length discrepancy less than -3.0 mm (2) ANB between 1.0 and 5.0 degrees (3) Deviation of the Menton less than 2.0 mm (4) Periodontal pocket depth less than 4.0 mm with no mobility 3) Patients aged between 18 and 40 years old 4) Patients with consent to participate in this clinical trial
Exclusion criteria
Exclusion criteria: 1) Patients with a history of orthodontic treatment 2) Patients with jaw deformity requiring a surgical intervention 3) Patients with moderate or severe alveolar bone resorption 4) Patients with an abnormal number of teeth (excluding third molars) 5) Patients with active periodontitis 6) Patients under medication related to bone metabolism (bisphosphonates etc.), steroids, sympathetic blockers, or antidepressants (at least 6 months drug cessation is acceptable) 7) Patients with severe mental disorders 8) Patients with a history of serious allergy to metals 9) Patients with a disease requiring urgent treatments or a serious complication 10) Patients in participation in research on other drugs, medical devices, or food products 11) Patients being pregnant or may become pregnant 12) Patients being breastfeeding 13) Other persons who are deemed by the principal investigator sub-investigator) to be inappropriate to participate in this trial
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Crowding relief period | — |
Secondary
| Measure | Time frame |
|---|---|
| 1) Tooth movement velocity (crown) (distance) 2) Tooth movement velocity (apex) (distance) 3) Tooth movement velocity (inclination) 4) Tooth movement velocity (rotation) 5) Crowding relief efficiency | — |
Contacts
Public ContactYuji Ishida
Institute of Science Tokyo Hospital
Outcome results
None listed