To establish the effect of erbium, chromium,yttrium,scandium,gallium and garnet (Er,Cr: YSGG) laser-aided circumferential supracrestal fiberotomy compared to a conventional circumferential supracrestal fiberotomy group, after leveling and alignment during the first month after arch wire removal on the prevention of rotational relapse in lower incisors. Methods: Randomized clinical trial in 60 orthodontic patients with two to four lower incisors rotation between 30º-50º degrees before treatment.They are going to be assigned in two intervention groups, each group with 30 patients. One group are going to be treated with Er;Cr: YSGG laser -aided CSF and the other group with conventional circumferential supracrestal fiberotomy. After leveling and alignment each procedure will be performed and after one month healing the arch wire will be removed for a month and lower incisor relapse will be measured through cast models in a software. Periodontal parameters will be registered before and after procedures.The outcomes are going to be determined and compared between groups with corresponding statistical test and results will be analyzed
Age range
18 Years – 30 Years
Sex
ALL
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Quantity of anterior mandibular rotation relapse
Timeframe: one month after arch wire removal