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Clinical and Biochemical Assessments of Segmental Maxillary Posterior Tooth Distal Movement of Two Different Force Magnitudes per Unit of Root Surface Area

Clinical and Biochemical Assessments of Segmental Maxillary Posterior Tooth Distal Movement of Two Different Force Magnitudes per Unit of Root Surface Area

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
TCTR
Registry ID
TCTR20170728001
Enrollment
Unknown
Registered
2017-07-28
Start date
2015-05-29
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Class II dental malocclusion Class II malocclusion&#44

Interventions

applied retraction force for segmental distal movement for three months (five maxillary teeth: canine&#44
first premolar&#44
second premolar&#44
first molar&#44
second molar) ,applied retraction force for segmental distal movement for three months (five maxillary teeth: canine&#44
second molar)
Experimental Other,Experimental Other
120 g of retraction force,180 g of retraction force

Sponsors

Faculty of Dentistry, Chiang Mai University
Lead Sponsor
Faculty of Dentistry&#44
Collaborator
Chiang Mai University
Collaborator

Eligibility

Sex/Gender
All
Age
15 Years to 29 Years

Inclusion criteria

Inclusion criteria: 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.

Exclusion criteria

Exclusion criteria: 1) Previously orthodontic treatment 2) Missing of posterior maxillary teeth

Design outcomes

Primary

MeasureTime frame
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

MeasureTime frame
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—

Countries

Thailand

Contacts

Public ContactSuchada Limsiriwong

Unaffiliated

Ls_bo@hotmail66865511747

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026