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81. Bracing of the partial denture framework is BEST accomplished by the:a)Retentive arm of the occlusal rest b)Rigid reciprocal arm and the flexible part of the retentive arm of the clasp c)Rigid reciprocal arm of the clasp d)Rigid reciprocal arm and the body of the clasp 82. The MOST effective means of limiting applied loads to abutment teeth in distal extension partial denture is by:83. For a mandibular denture impression, action of which of the ff muscles determines the form of the lingual flange in the molar region84. The primary purpose of surveying a cast for a removable partial denture service is:85. A distal extension rpd with natural anterior teeth that are capable of anterior guidance requires the posterior artificial teeth to providea)Centric occlusion and working contactsb)Centric occlusion contacts only c)Balancing and working contacts 86. In surveying cast for removable partial dentures87. The occlusal requirements of a mandibular bilateral distal extension rpd against a maxillary complete denture are:88. In constructing single complete denture opposed by natural or predominantly natural dentition.