Patient V., 38 years old, was referred to the orthopedic department after a course of therapeutic treatment for periodontitis. From the anamnesis: frequent relapses of the disease, with exacerbation, periodontal abscesses are noted.

Objectively: teeth 42, 41, 31, 32 are characterized by mobility of the I-II stage, 43 and 33 are stable, the necks of the teeth are exposed by 1/4, hyperesthesia of the hard tissues of the teeth is not noted.

Specify a rational design of a permanent tire.

a) Mamlock tire

b) half-crown tire

c) one-piece removable splint for the entire dentition

d) beam tire according to Courland