Clinical and Biochemical Assessments of Segmental Maxillary Posterior Tooth Distal Movement of Two Different Force Magnitudes per Unit of Root Surface Area
- Conditions
- Class II dental malocclusionClass II malocclusion,Root surface area,force magnitude,Rate of tooth movement
- Registration Number
- TCTR20170728001
- Lead Sponsor
- Faculty of Dentistry, Chiang Mai University
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- All
- Target Recruitment
- 20
Forty segments of five maxillary posterior teeth (canine, first premolar, second premolar, first molar and second molar) from twenty patients undergoing distal movement were used as experimental teeth. The patients met the following criteria:
1) Good general and oral health with a healthy periodontium, no radiographic evidence of bone loss, no gingival inflammation, and a probing depth of 3 mm or less of all teeth.
2) Lack of antibiotic therapy during previous 6 months
3) Absence of anti-inflammatory drug administration in the month preceding the study.
4) No pregnancy (women).
5)Class II malocclusion which required maxillary posterior tooth distal movement as indication for orthodontic treatment.
1) Previously orthodontic treatment
2) Missing of posterior maxillary teeth
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Rate of tooth movement 3 months after distalization calculated from pre-post scanned dental model,Chondroitin Sulphate level four weeks prior to and during applied retraction force ELISA test from gingival crevicular fluid of investigation teeth from gingival crevicular fluid of i
- Secondary Outcome Measures
Name Time Method Root surface area of maxillary teeth From start CBCT measuring method,Force per unit of root surface area at the end of investigation gram per mm x mm