Evaluation of the Rate of Maxillary En-masse Retraction Using 0.018-inch Versus 0.022-inch Slot Brackets in Adults
NCT ID: NCT04468295
Last Updated: 2020-07-14
Study Results
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Basic Information
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UNKNOWN
NA
22 participants
INTERVENTIONAL
2020-09-28
2022-03-28
Brief Summary
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Detailed Description
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* Full set of records ( study models, lateral cephalometric radiographs, photos) will be taken for every patient as part of the routine procedure for treatment of patients in the outpatient clinic of the Orthodontic Department, Cairo University.
* In intervention group: Bonding of upper and lower arches including 2nd maxillary molars with bracket prescription Roth 0.018-inch (American Orthodontics).
* In comparator group: Bonding of upper and lower arches including 2nd maxillary molars with bracket prescription Roth 0.022-inch (American Orthodontics).
* Levelling and alignment in both groups with wire sequence: Ni-Ti (0.014,0.016, 0.016×0.022)
* Steel ligation of maxillary (2nd premolar, 1st molar and 2nd molar) for anchorage.
* Extraction of maxillary 1st premolars.
* Impression will be taken, poured in plaster from which digital models will be fabricated before beginning of en-masse retraction (the baseline model).
* Lateral cephalometric and periapical radiographs will be taken before starting retraction.
* En-masse retraction will be done using 0.017x0.025 TMA T-Loop10 in both groups, the loops will be reactivated monthly.
* Alginate impressions will be taken every month, that will be scanned to obtain digital models to assess the rate of retraction for 6 months.
* After 6 months, last obtained digital model will be evaluated for assessment of anchorage loss, and Lateral cephalometric and periapical radiographs will be taken to assess changes in the anterior teeth inclinations and apical root resorption respectively.
* The patients' treatment will be completed as indicated for them.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
DOUBLE
Study Groups
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0.018-inch slot orthodontic bracket system
En-masse retraction using frictionless mechanics with 0.018-inch slot orthodontic bracket system.
Bonding
Bonding of upper and lower arches including 2nd maxillary molars with bracket prescription Roth 0.018 inch
Leveling and alignment
Leveling and alignment till 0.016 x0.022 Ni Ti
Extraction
Extraction of maxillary 1st premolars
Retraction
En-masse retraction using 0.017x0.025 TMA T loop
Digital models
impression taking and digital scanning
measurement
Assessment the rate of retraction for 6 months
0.022-inch slot orthodontic bracket system
En-masse retraction using frictionless mechanics with 0.022-inch slot orthodontic bracket system.
Bonding
Bonding of upper and lower arches including 2nd maxillary molars with bracket prescription Roth 0.018 inch
Leveling and alignment
Leveling and alignment till 0.016 x0.022 Ni Ti
Extraction
Extraction of maxillary 1st premolars
Retraction
En-masse retraction using 0.017x0.025 TMA T loop
Digital models
impression taking and digital scanning
measurement
Assessment the rate of retraction for 6 months
Interventions
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Bonding
Bonding of upper and lower arches including 2nd maxillary molars with bracket prescription Roth 0.018 inch
Leveling and alignment
Leveling and alignment till 0.016 x0.022 Ni Ti
Extraction
Extraction of maxillary 1st premolars
Retraction
En-masse retraction using 0.017x0.025 TMA T loop
Digital models
impression taking and digital scanning
measurement
Assessment the rate of retraction for 6 months
Eligibility Criteria
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Inclusion Criteria
* Full permanent dentition (not necessitating third molars).
* Good oral hygiene.
Exclusion Criteria
* Active periodontal disease or obvious bone loss in maxillary arch.
* Patients with habits that are detrimental to dental occlusion (thumb sucking, tongue thrusting).
* Previous orthodontic treatment.
* Missing teeth.
18 Years
30 Years
ALL
Yes
Sponsors
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Cairo University
OTHER
Responsible Party
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Omar Abdelaziz
Principal Investigator
Other Identifiers
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CEBC-CU-2020-07-09
Identifier Type: -
Identifier Source: org_study_id
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