Cleft Lip and Palate
Conditions
Keywords
maxillary expansion
Brief summary
Aim of the study: to compare the effect of Hyrax appliance and the Haas appliance improving the transverse skeletal and dental dimensions in cleft lip and palate patients during mixed dentition.
Detailed description
•Steps in short Full records pre-treatment. Bands selection for upper first molars then construction of expansion appliances(Haas or Hyrax) . Delivery of appliances and instructions to the patients and their parents about their activation regimen 2 quarter turns in the morning and 2 in the evening.The posterior crossbite will be measured as the distance from the palatal cusp tips of upper first molars to central fossae of lower first molars then the needed time for expansion will be calculated .When the time calculated for correction ends, we will stop activation, we will take impressions for digital models to see if real expansion occurred or not and so testing the efficiency of the two appliances. Afterthat, if correction was not yet achieved, activation of the appliances will continue till overcorrection at the molar region with the palatal cusp tip of the maxillary posterior teeth contacting the buccal cusp tip of the mandibular posterior teeth. We will then leave the appliance insitu for retention. After 6 months from the first CBCT we will take a second CBCT to see any bony changes .
Interventions
DEVICEhyrax appliance
Hyrax will be constructed with bands on maxillary first molars and wire extending on palatal surfaces of teeth till the upper canines.
DEVICEhaas appliance
Haas will be constructed with bands on maxillary first molars and wire extending on palatal surfaces of teeth till the upper canines. Acrylic part will be added on palate
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
7 Years to 11 Years
Healthy volunteers
Yes
Inclusion criteria
* (1) Mixed dentition; (2) Both males and females; (3) Lip repair performed between 3 and 6 months of age and palate repair performed between 12 and 24 months of age; (4) Presence of maxillary constriction and posterior crossbite and need for maxillary expansion previous to the secondary bone graft; (5) Permanent first maxillary molars present; (6) Good periodontal health; (7) No previous orthodontic treatment;
Exclusion criteria
* (1) Presence of a syndrome in companion with the present cleft defect (2) Previous secondary alveolar bone grafting (3)Taking medications affecting growth
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Tranverse dental changes | 3 months | assessed on digital models by linear measurements (mm) |
| Tranverse skeletal changes | 6 months | assessed on CBCT by linear and angular measurements(mm and angles) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Maxillary and mandibular anteroposterior measurements | 3 months | They will be measured on digital casts by linear measurements(mm) |
| Vertical skeletal measurents | 6 months | They will be measured on CBCT by linear and angular measurements(mm and angles) |
Contacts
Primary ContactYomna ElFiky
Outcome results
None listed