A 45-year-old patient complains of inability to properly masticate due to the loss of lateral teeth. The 17, 16, 15, 25, 26, 27, 37, 36, 35, 44, 45, and 46 teeth are missing. The retained teeth exhibit the I-II-degree of mobility. The patient is diagnosed with generalized periodontitis. Kennedy class I dentition defects are observed. What construction would be optimal in the given case?