24 Questions
What is the purpose of an indirect retainer in a removable partial denture?
To assist direct retainers in preventing displacement of the distal extension denture bases
What type of clasp design configuration is usually seen in Kennedy Class III with a modification on the opposite side of the arch?
Quadrilateral configuration
What is the purpose of the fulcrum line in a removable partial denture?
To rotate the partial denture around an imaginary axis
What type of clasp is used on the distobuccal surface of a canine with only the tip in contact with the tooth?
I-clasp
What type of clasp is used in canine and premolars for better aesthetics?
Modified T clasp
When should an indirect retainer be used in a removable partial denture?
When the direct retainer is not sufficient
What is the maximum distance from the marginal gingiva that the borders should be in the maxillary region?
6mm
What type of palatal bar is used in Kennedy Class III cases?
Single posterior palatal bar
What is the purpose of a rest seat?
To receive an occlusal, incisal, lingual, internal or semiprecision rest
What type of clasp is commonly used in distal extension cases?
T-clasp
What is the angle at which the metal framework should cross the gingival margin?
90 degrees
What is the name of the type of mandibular major connector that consists of two parallel bars?
Double lingual bar
According to the Kennedy classification, in which class is an indirect retainer not required?
Class III
What is the primary purpose of a long flange in denture base design?
To resist horizontal forces
Why are metallic dentures less suitable for maxillary dentures?
Due to the need for aesthetic appeal
In Kennedy Class I, how many clasps are required on terminal abutments?
2 clasps on terminal abutments bilaterally
What is the primary function of an indirect retainer in Kennedy Class I?
To distribute the forces of the denture
In Kennedy Class II, how many retentive clasps are required?
3 retentive clasps, 1 on the edentulous side and 2 on the dentulous side
What is the recommended shape of the major connector in Kennedy Classification II modification 1 design?
Horseshoe shaped palatal connector
In Kennedy Classification III design, how many clasps are recommended?
4 clasps for quadrilateral design
Where is the indirect retainer typically placed in Kennedy Classification IV design?
Posterior to the fulcrum line
What is the primary consideration for the position of the undercut in Kennedy Classification II modification 1 design?
The undercut is not critical in designing the prosthesis
What is the recommended configuration for short edentulous spans?
Limited need for retainers and clasps
How many indirect retainers are recommended for Kennedy Classification II modification 1 design?
1 retainer on the dentulous side
This quiz covers important biological factors to consider when designing and drawing lab authorization forms for removable partial dentures, including edentulous span, oral mucosa, and clasp design. It also reviews key design principles, such as border placement and metal framework considerations.
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