lingual retainer made of fiber manufactured using CAD-CAM technique applied to the lingual surfaces of the mandibular incisors and evaluated every month over a period of 6 months.

lingual retainer made of metal manufactured using CAD-CAM technique applied to the lingual surfaces of the mandibular incisors and evaluated every month over a period of 6 months

lingual retainer made of braided stainless steel wire applied to the lingual surfaces of the mandibular incisors and evaluated every month over a period of 6 months.

lingual retainer manufactured from fiber using CAD-CAM technique applied to the lingual surfaces of the mandibular incisors and evaluated every month over a period of 6 months.

the amount of plaque on the gingival edge on the tooth surface is determined by using a probe. This indicator does not need to color the plaque. This indicator is taken for all teeth monthly over a period of 6 months

Patient acceptance will be evaluated according to a set of questions presented in a questionnaire sheet for each patient in the hospital

Each period of the review where patient acceptance was recorded in three aspects:

1. Speech: The extent of the effect of the affixed fixative on the patient's comfort with speech will be recorded in each follow-up period in the event that there is no difficulty in speaking or there is difficulty in speaking.

   Is there a proven effect on speech? )Yes No(

2. Oral Care Procedures: The patient's ability to perform oral care procedures will be recorded In my case, the ease and difficulty of doing oral care procedures. How easy is it for you to perform oral care procedures? (easy / hard)