A 52-year-old man came to a dentist with complaints of mobility of his lower front teeth. Objectively, his lower incisors are intact and have the first-degree mobility, the canines and lateral teeth are stable. Orthopantomography shows resorption of the interalveolar septa in the area of the incisors to 1/4 of their height. Between the front teeth, the patient has a diastema and tremata up to 1 mm in width. Temporary splinting is planned. What splint is indicated in this case?