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IRCT20210531051460N1 IRCT 2021-07-27 Yazd University of Medical Sciences Effect of lasercision corticotomy on the rate of canine retraction Determining the effect of laser corticotomy on canine tooth retraction rate Dez orthodontic patients of Yazd Shahid Sadoughi Dental School who need to remove the first maxillary premolars 2021-08-06 anticipated 12 Complete https://irct.ir/trial/56648 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: In this study, a simple randomization method is used. The randomization unit is individual and the randomization tool is the use of a random number table in such a way that all people for whom the first premolars are extracted and are in the pre-retraction stage. A number is assigned. Then, in the randomization table, we close the eyes and select the starting point, and we proceed to the same row or column, and the numbers that are smaller than the total number of people are selected to the number of the sample size, ie 13 Let's reach. Sealed bags are used to randomize which side of the laser corticotomy is to be performed, Blinding description: In this study, the outcome assessor and the data analyst are blinded so that the canon retraction assessor and the data analyst are not aware of which side is performing the intervention and which is the control side. In this study, it is not possible to blind participants because our intervention is laser corticotomy. N/A The rate of canine tooth regression. Intervention 1: Intervention group: In the area of the extracted premolar tooth, one side of the maxilla is randomly performed with laser corticotomy. During one session using the er: yag laser, corticotomy is performed in this area and the canine retraction rate is assessed within four months and compared with the control group. Intervention 2: Control group: No intervention is performed in the area of the extracted premolars on the other side of the maxilla, and the amount of canine retraction in this sect is evaluated within four months and compared with the intervention group. Yes - There is a plan to make this available What will be shared: After identifying individuals, it is possible to share all patient variables. When: Access period starts 6 months after the results are published. To whom: Researchers working in academic and scientific institutes of prestigious scientific research journals. Conditions: In order to use the documents of this study for other studies and researches to apply the results. Where to obtain: Responsible person in this field Negin Karimi to the email address negin.karimi97@yahoo.com How to obtain: The applicant can send his/her request to the mentioned email address along with her introduction and the reason for the request, and receive the information as soon as possible (finally 7 to 10 days). Comments:
public Negin Karimi Sardari
Dahe Fajr Boulvard.Imam Reza street.Shahid Sadoughi university of medical science.Yazd.Iran
Yazd Iran (Islamic Republic of) 8914881167 +98 35 3625 6975 negin.karimi97@yahoo.com Yazd University of Medical Sciences scientific Negin Karimi Sardari
Dahe Fajr Boulvard.Imam Reza street.Shahid Sadoughi university of medical science.Yazd.Iran
Yazd Iran (Islamic Republic of) 8914881167 +98 35 3625 6975 negin.karimi97@yahoo.com Yazd University of Medical Sciences Iran (Islamic Republic of) Patients with class l malocclusion who require bilateral maxillary first maxillary filling due to severe crowding or dental protrusion. Patients with class II malocclusion with maxillary dentoalveolar protrusion who require bilateral maxillary first premolars and canine retraction as part of an orthodontic treatment plan (camouflage treatment). Vital teeth with normal periodontium and no root resorption. The presence of both the first and second maxillary molars. Lack of systemic disease, craniofacial syndromes and deformities. No previous orthodontic treatment. Lack of facial asymmetry. Periodontal health. No history of anterior maxillary surgery. Do not take drugs that affect orthodontic movements such as corticosteroids, hormonal therapy and tricyclic antidepressants. No severe liver or kidney disease Absence of systemic conditions such as diseases that are immunocompromised or blood disorders, diabetes, etc. The natural structural shape of the canine. Acceptable oral hygiene (index plate below 30%). No vitamin D deficiency or hyperparathyroidism and osteoporosis. 15 years 25 years Both Poor oral hygiene Patients treated with drugs that affect the orthodontic movement of teeth. Patients whose canine and second molars have necrosis. Treatment - Devices Treatment - Devices Intervention group: In the area of the extracted premolar tooth, one side of the maxilla is randomly performed with laser corticotomy. During one session using the er: yag laser, corticotomy is performed in this area and the canine retraction rate is assessed within four months and compared with the control group. Control group: No intervention is performed in the area of the extracted premolars on the other side of the maxilla, and the amount of canine retraction in this sect is evaluated within four months and compared with the intervention group. The rate of canine regression. Timepoint: The first month, the second month, the third month and the fourth month after laser corticotomy. Method of measurement: First, a three-dimensional scan is prepared from the study casts prepared each month. The reference lines in the scans include the midpalatal ridge and the Roga line. The Roga line is drawn from the midpoint of the third Roga on the right side of the palate perpendicular to the midline. Anchorage loss. Timepoint: Pain score. Method of measurement: vitality test. Yazd University of Medical Sciences Approved 2021-07-12 Ethics Committee of Shahid Sadoughi University of Medical Sciences, Yazd Dahe Fajr Boulevard.Imam Reza Street.Shahid Sadoughi university of medical science.Yazd.Iran Yazd Yazd Iran (Islamic Republic of)