NCT03085082|UnknownDMC
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Sponsor study identifier
observational
300
0 countries
N/A
Study Start
April 1, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
September 1, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
December 31, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
the study is searching if there is a relationship between the blood groups and RH and the skeletal malocclusion using the skeletal class I as a control group
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 31, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
March 15, 2017
Actual (reported)March 21, 2017
Actual (reported)April 1, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
September 1, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
December 31, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
relationship between blood group and skeletal malocclusion
If skeletal malocclusion subjects were found to have a high percentage of a certain blood type or RH when compared to the control group it will be reported that there is a relationship between blood group and skeletal malocclusion. If percentages of blood groups are approximately the same in the malocclusion subjects and the control then the investigator will report that there is no relationship between blood groups and skeletal malocclusion
the recruitment will be for six months
patients with wits appraisal more than 3 mm measured on a cephalometric x ray obtained during diagnosis
patients with wits appraisal less than -3 mm measured on a cephalometric x ray obtained during diagnosis
patients with Wits appraisal between -3 and +3 that is measured from a cephalometric x ray obtained during diagnosis of arch length discrepancy. this group will serve as control and obtained after recruitment of the other 2 groups in 1 to 1 fashion
a blood sample will be withdrawn from the subjects tested by anti A anti B and anti D antigens to detect the individuals blood group and RH. then statistical analysis to detect presence of a relationship between skeletal types of malocclusion and ABO blood groups
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
all patients with skeletal malovclusion seeking medical care in the orthodontic department of cairo university for six months
Flannery, P. M. (1969). Loyola eCommons The Abo Human Blood Groups and Skeletal Class IIi Malocclusions.
Schnibben, C. L. (1968). Loyola eCommons A Study of the Relationships of the ABO Human Blood Groups , the Rh Factor and Hereditary Malocclusions of the Skeletal Type , Class II , Division 1.
Gheisari R, Ghoreishian M, Movahedian B, Roozbehi A. The association between blood groups and maxillofacial deformities. Indian J Plast Surg. 2008 Jul;41(2):138-40. doi: 10.4103/0970-0358.44921.
Amgad qaddah, professor
head of department of orthodontics cairo university
First Submitted
March 15, 2017
First Posted
March 21, 2017
Study Start
April 1, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
Dentoskeletal Effects of Two Different Fixed Functional Appliances for Correction of Class II Malocclusion: A Comparative Clinical Study
Contact the study team to confirm eligibility.
Science, D. (2015). International Journal of Pharma and Bio Sciences ISSN CRANIOFACIAL MORPHOLOGY WITH GENETIC INFLUENCE OF ABO BLOOD, 6(4), 412±418.
September 1, 2017
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
December 31, 2017
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Last Updated
March 22, 2017
Record last verified: 2017-03
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Source: ClinicalTrials.gov.
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