Orthodontic Appliance
Conditions
Keywords
recent, healed, extraction space
Brief summary
The aim was to compare the rate of teeth movement into fresh and old extraction sites.
Detailed description
Trial design: Randomized controlled clinical trial with a split mouth design. Setting: Jordan University of Science and Technology(JUST) Postgraduate Dental Teaching Clinics and labs. Participants and interventions: Twenty-eight subjects with bimaxillary proclination requiring extraction of all first premolar teeth participated in this study. In the lower arch, two groups were also identified; group 1 having the first premolar extracted before the commencement of orthodontic treatment and group 2 having the first premolar extracted just before space closure when 0.019 x 0.025 inch SS archwire was reached. Patients were followed-up monthly for three months. At every follow-up visit lower alginate impressions were taken. Extraction spaces in the lower arch follow-up models were measured using digital caliper. The rate of extraction space closure in the lower arch was assessed monthly.
Interventions
DEVICESpace closure into old extraction space
Lower first premolar extraction space was closed using elastic power chain and 0.019X0.025 Stainless steel archwire into healed bony socket
DEVICESpace closure into recent extraction space
Lower first premolar extraction space was closed using elastic power chain and 0.019X0.025 Stainless steel archwire into fresh bony socket
Sponsors
Jordan University of Science and Technology
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Masking description
After recruiting patients who met the inclusion criteria, the intervention was randomly allocated to either the right or left side using the permuted random block size of 2 with 1:1 allocation ratio. The random sequences for each intervention to either right or left sides was concealed in opaque envelopes and shuffled before the intervention to increase the unpredictability of the random allocation sequence. Each patient was asked to pick a sealed envelope to assign the intervention to either the right or left side. Allocation concealment was aimed to prevent selection bias and to protect the assignment sequence until allocation.
Intervention model description
Space closure into old extraction space
Eligibility
Sex/Gender
ALL
Age
16 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Age ≥ 16 years * Proclined upper and lower incisors (Ui/max \>115 o, Li/mand \>99o) * Mild upper and lower arch crowding (\<4mm) or no crowding * Need for upper and lower first premolars extraction * Skeletal I malocclusion (1\<ANB \<5) * Average lower facial height and maxillomandibular plane angle (22 o \<MM\<32 o) * Class I canine relationship * Good oral hygiene and healthy periodontium
Exclusion criteria
* Poor oral hygiene * Diseases and medications that were likely to affect bone biology * Previous orthodontic treatment * Evidence of bone loss * Active periodontal disease * Smoking
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Amount of space closure | 3 months | Width of extraction space will be measured in millimeters |
Countries
Jordan
Outcome results
None listed