ACTRN12612000670875Not yet recruiting未知
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 enrollmentStarted: June 22, 2012Last updated:
Conditions
Trial Snapshot
- Phase
- 未知
- Status
- Not yet recruiting
- Enrollment
- 72
Study Overview
Brief Summary
No summary available.
Study Design
- Study Type
- Interventional
- Allocation
- Randomised controlled trial
- Primary Purpose
- Treatment
- Masking
- Blinded (masking used)
Eligibility Criteria
- Ages
- o limit to 17 Years (—)
- Sex
- All
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
Exclusion Criteria
- •1. over the age of 17 years
- •2. Has sufficient space for lower third molar teeth
- •3. Patient has unclosed extraction spaces
- •4. Patient has undergone orthognathic surgery
- •5. Patient does not have complete end of treatment records.
- •6. Patient does not consent to treatment
- •7. Patient is not available for review at the time points
Investigators
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