Study of the Relationship Between Blood Groups,RH and Skeletal Malocclusion : a Cross Sectional Study

Study of the Relationship Between Blood Groups,RH and Skeletal Malocclusion in a Group of Egyptian Population: a Cross Sectional Study

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03085082

Enrollment

300

Registered

2017-03-21

Start date

2017-04-01

Completion date

2017-12-31

Last updated

2017-03-22

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

Conditions

Class III Malocclusion, Class II Malocclusion

Brief summary

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

Detailed description

The study will be conducted on the patients seeking medical care in the orthodontic department Cairo University, for six months all patients with class II and class III malocclusion will be recruited based on Wits appraisal measured from the cephalometric X-ray taken routinely during orthodontic examination. Then a group of class I arch length discrepancy patients will be used as control. A blood sample will be withdrawn and taken to the Cairo university laboratory to analyze the blood group and RH .a statistical analysis will be performed to detect a relationship between skeletal malocclusion and the blood groups as compared to the control

Interventions

DIAGNOSTIC_TESTblood type test

a blood sample will be withdrawn from the subjects tested by anti A anti B and anti D antigens to detect the individuals blood group and RH.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

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

skeletal class I,II and III patients non syndromic patients above the age of 18 no previous surgical intervention for correction of skeletal malocclusion

Exclusion criteria

* syndromic patients * cleft patients * patients with previous surgery to correct skeletal malocclusion

Design outcomes

Primary

Measure	Time frame	Description
relationship between blood group and skeletal malocclusion	the recruitment will be for six months	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

Contacts

Primary ContactNoor Elsebai

noorelsebai@gmail.com01023415842

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026