]>
IRCT20230310057665N1 IRCT 2023-11-12 Mashhad University of Medical Sciences Evaluation of the occlusal adjustment on orthodontic's relaps by T-scan III Evaluation of the effect of occlusal adjustment on relapse after orthodontic treatment by T-scan III 2023-12-01 anticipated 40 Complete https://irct.ir/trial/69128 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: In this study, permutation block method is used to generate random allocation sequences of people to study groups. The random assignment sequence of people is performed using random allocation software and block size two. Permutation blocks method is one of the random allocation methods in which each block is selected according to the number of groups studied. In this study, there are two blocks AB and BA. If the first block, AB, is chosen, the first is assigned to group A and the second to group B. And this process continues until the allocation of all samples. The feature of this method is that the two study groups will have equal numbers, Blinding description: Due to the nature of the work, the experimenter and the tested people cannot be blinded, and the people who analyze the results at the end of the work are blind. The cassettes are only given to the analyst by number. N/A Investigating orthodontic relapse using T-scan III. Intervention 1: Intervention group: Inclusion criteria would be patients undergoing fixed orthodontic treatment with MBT prescription brackets with bimaxillary protrusion or with 4mm crowding or more. After debonding, a plaster mold would be created from both dentitions. Then they would be instructed to use their ESSIX VFR retainers for one month full-time and one-month part-time. One-month after debonding and wearing retainers full time, occlusal adjustment would be done by selectively grinding occlusal contacts to mitigate the precursors for potential orthodontic relapse and dental relationship would be then evaluated by T-scan device. Six months after debonding, plaster casts would be made again, and dental relations would be evaluated by T-scan device. By comparing the initial and final plaster casts, relapse would be assesed. Intervention 2: Control group: the conditions are completely similar to the intervention group, but after complete debonding, occlusal adjustment is not done, and patients are evaluated with a T-scan device immediately after debonding, 1 month after debonding, and 6 months after debonding, and also immediately after debonding and 6 months after debonding, casting is done with alginate and the primary and secondary casts are compared to check the amount of relaps. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no further information
public Arezoo Jahanbin
Faculty of Dentistry,in front of Mellat park,Vakilabad BLV
Mashhad Iran (Islamic Republic of) 9177948959 0098518829501 JahanbinA@mums.ac.ir Mashhad University of Medical Sciences scientific Arezoo Jahanbin
Faculty of Dentistry,in front of Mellat park,Vakilabad blv
Mashhad Iran (Islamic Republic of) 9177948959 +98 51 3882 9501 JahanbinA@mums.ac.ir Mashhad University of Medical Sciences Iran (Islamic Republic of) Patients between 17-30 years of age with class 1 dental malocclusion with double jaw tooth protrusion or crowding more than 4 mm underwent fixed orthodontic treatment with extraction of 4 first premolar teeth of two jaws underwent fixed orthodontic treatment with MBT 0.22 bracket system. 17 years 30 years Both Patient with parafunction habit systemic disease poor oral hygiene Gingivitis or periodontal problems or deep caries that have spread to the cement enamel junction Taking drugs that affect bone metabolism, such as drugs that prevent bone resorption K07.2 Anomalies of dental arch relationship Treatment - Devices Treatment - Devices Intervention group: Inclusion criteria would be patients undergoing fixed orthodontic treatment with MBT prescription brackets with bimaxillary protrusion or with 4mm crowding or more. After debonding, a plaster mold would be created from both dentitions. Then they would be instructed to use their ESSIX VFR retainers for one month full-time and one-month part-time. One-month after debonding and wearing retainers full time, occlusal adjustment would be done by selectively grinding occlusal contacts to mitigate the precursors for potential orthodontic relapse and dental relationship would be then evaluated by T-scan device. Six months after debonding, plaster casts would be made again, and dental relations would be evaluated by T-scan device. By comparing the initial and final plaster casts, relapse would be assesed. Control group: the conditions are completely similar to the intervention group, but after complete debonding, occlusal adjustment is not done, and patients are evaluated with a T-scan device immediately after debonding, 1 month after debonding, and 6 months after debonding, and also immediately after debonding and 6 months after debonding, casting is done with alginate and the primary and secondary casts are compared to check the amount of relaps. Intercanine width. Timepoint: Pre intervention,6months after intervention. Method of measurement: Image J software. Root paralleling. Timepoint: 1 month before the intervention and 6 months after the intervention. Method of measurement: Image J software. Mashhad University of Medical Sciences Approved 2023-02-15 Ethics Committee of Faculty of Dentistry, Mashhad University of Medical Sciences Dentistry faculty,in front of Mellat park,Vakilabad blv,Mashhad Mashhad Razavi Khorasan Iran (Islamic Republic of)