A prospective study of orthodontic treatment outcomes with different treatment strategies in children under 17 years old who have completed orthodontic treatment.

Australian Society of Orthodontists Foundation for Research and Education0 sites72 target enrollmentJune 22, 2012

Conditionsretention outcomes post orthodontic treatment as affected by different retainer types retention outcomes post orthodontic treatment as affected by wisdom tooth extraction after completion of orthodontic treatment Oral and Gastrointestinal - Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon

Overview

Phase: 未知
Intervention: Not specified
Conditions: retention outcomes post orthodontic treatment as affected by different retainer types
Sponsor: Australian Society of Orthodontists Foundation for Research and Education
Enrollment: 72
Status: Not yet recruiting
Last Updated: 6 years ago

Overview Investigators Eligibility Criteria Outcomes Similar Trials

Overview

Brief Summary

No summary available.

Registry

who.int

Start Date

June 22, 2012

End Date

TBD

Last Updated

6 years ago

Study Type

Interventional

Sex

All

Investigators

Sponsor

Australian Society of Orthodontists Foundation for Research and Education

Eligibility Criteria

Inclusion Criteria

•1\.subject to be under the age of 17 years old at the end of treatment
•2\.subject diagnosed as not having enough space for lower third molar teeth (assessment of this will be made using a late treatment OPG and the Space Width Ratio will be less than 0\.8\). If the OPG indicates that the teeth are horizontally impacted and therefore at a risk of being closely involved with the inferior dental canal and its contents then the patient would be advised not to participate in the study and to seek early removal of the 8s.
•3\.subject has a continuous (no unclosed extraction spaces) natural dentition including second molars in occlusion with no retained primary (baby) teeth or complex restorations (crowns, bridges or implant supported crowns or bridges);
•4\.subject has undergone full fixed orthodontics with or without other phases or adjunctive treatments such as rapid maxillary expansion or extractions; (however no orthognathic surgery cases will be included to avoid the compounding factor of surgical relapse);
•5\.subject has pre\-treatment study models and OPG available (these are standard pre\-treatment orthodontic records);
•6\.subject has end\-of\-treatment study models, and late treatment OPG (these are standard end\-of\-treatment orthodontic records);
•7\.subject agrees, with consent of parent/guardian, to have impressions for study models not only at end\-of\-treatment, but also at 1 year post\-treatment and 3 years post\-treatment;
•8\.subject agrees, with consent of parent/guardian, to undergo oral examination and to complete a patient satisfaction survey at 3 months, 1 year and at 3 years;
•9\.subject and parent/guardian consents to a randomly assigned retention protocol