Prosthodontic Design Considerations Quiz for Partial Dentures

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Questions and Answers

What are the potential problems of Class IV partial denture?

Displacement of the periodontal ligament (correct)

Poor adaptation to residual ridge

Lack of retention

Inadequate posterior support

Why are anterior teeth usually placed in a less ideal relation to the residual ridge in Class IV partial denture?

To reduce occlusal stresses

To satisfy esthetic demands (correct)

To enhance retention

To improve posterior support

What is the major concern with the use of anterior clasp in partial denture design?

Inadequate support

Poor esthetics (correct)

Increased occlusal forces

Reduced retention

What is the purpose of using R.P.I or gingivally approaching clasp in partial denture design?

Flexibility and esthetics Signup and view all the answers

What is the recommended major connector for a maxillary partial denture with a free end saddle?

Horseshoe Signup and view all the answers

Where should the indirect retention be placed in a partial denture?

As far posteriorly as possible Signup and view all the answers

What are the educational aims of the lecture on partial denture design?

To explain the principles of partial denture design Signup and view all the answers

What should students understand upon completion of the lecture on partial denture design?

Forces acting on the partial denture and design components Signup and view all the answers

Where are students advised to read details about removable partial dentures?

Removable partial dentures, Nicholas J A Jepson, 2004: Chapter 6 Signup and view all the answers

What are the types of RPD according to support?

Tooth Support, Mucosa support, Tooth-mucosa support Signup and view all the answers

What are the possible partial denture movements mentioned in the text?

Tissue-ward movements, Tissue-away movements, Horizontal movements, Rotational movements Signup and view all the answers

What function of the partial denture is called 'Support'?

Vertical forces acting in gingival direction tending to move the denture towards the tissues Signup and view all the answers

What mainly provides the function of 'Support' in partial dentures?

Properly designed supporting rests, Rigid major connectors, Broad accurately fitting denture bases Signup and view all the answers

What are the educational aims of the lecture on Clinical partial prosthodontics?

To explain the principles of partial denture design, To detail the problems related to the design of the partial denture Signup and view all the answers

What is the objective of the lecture on Clinical partial prosthodontics?

To have an understanding of the forces acting on the partial denture and the design components that overcome them Signup and view all the answers

What is the main focus of the lecture on Clinical partial prosthodontics?

Principles of partial denture design and problems related to the design of the partial denture Signup and view all the answers

What provides retention in partial dentures?

Mechanical direct retainers Signup and view all the answers

What can lead to tooth damage and require bracing resistance in partial dentures?

Lateral movements during mandibular function Signup and view all the answers

What do indirect retainers in partial dentures reduce?

Rotational movements in an occlusal direction Signup and view all the answers

What are problems of support in free-end saddle partial dentures due to?

Lack of posterior abutment and reliance on residual ridge support Signup and view all the answers

What does load reduction in partial dentures involve?

Leaving a tooth off the saddle and using narrow teeth bucco-lingually Signup and view all the answers

What does wide load distribution in partial dentures aim for?

Maximum ridge coverage and involving a larger number of teeth as rigid rests Signup and view all the answers

What are the material options for clasps in partial dentures?

Retentive and bracing arms made of wrought metal cast wire and stress breakers using movable joints Signup and view all the answers

What minimizes strain on the residual ridge in prosthodontic design for partial dentures?

Functional impression Signup and view all the answers

What complicates retention in class II partial denture design?

Absence of a saddle Signup and view all the answers

What may be utilized in conventional partial dentures depending on the case?

Rest seats Signup and view all the answers

What is a characteristic of tooth-borne removable prosthesis?

Metal base Signup and view all the answers

What are the problems associated with unilateral partial dentures?

Instability and limited load distribution Signup and view all the answers

What is involved in designing class III partial denture to simplify problems?

Including a modification area for cross arch stabilization Signup and view all the answers

How can strain on the residual ridge be reduced in prosthodontic design for partial dentures?

Harmonious occlusion Signup and view all the answers

Study Notes

Prosthodontic Design Considerations for Partial Dentures

Placing the occlusal rest away from the distal extension base changes the torque, counteracted by adjacent tooth buttressing effect.
Anterior placement of occlusal rest disengages the clasp during tissue ward forces, increasing the length of the arc of rotation and support area.
Functional impression minimizes strain on the residual ridge through broad tissue coverage, denture base fitness, muco-compression impression recording, and improving the ridge condition.
Strain on the residual ridge is also reduced through the use of small and narrow teeth, harmonious occlusion, and placement of occlusal rests away from the saddle.
Minimizing strain on abutment teeth involves choosing the correct abutment tooth, direct retainer, stress equalizing design, and placing additional rests.
Designing class II partial dentures follows the same principles as class I, but the absence of a saddle complicates retention due to lack of posterior support.
Class II partial dentures can be designed with or without modifications, utilizing rigid clasping, stress equalizing principles, or modification spaces for retention and bracing.
Class III partial denture problems can be simplified by including a modification area for cross arch stabilization, retention, and support.
Tooth-borne removable prosthesis characteristics include a metal base, no need for indirect retainer or stress breaking action, and requiring only anatomic impression.
Conventional partial dentures may utilize rest seats, near zone, retentive clasps, and a metallic or combination denture base, depending on the case.
Problems of unilateral partial dentures include instability, limited load distribution, and potential aspiration or swallowing.
Design considerations for unilateral partial dentures involve providing B and L cusp contact, wide occlusal rest, double bracing and retention, and maximum flange extension.

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Description

Test your knowledge of prosthodontic design considerations for partial dentures with this informative quiz. Explore topics such as occlusal rest placement, functional impression techniques, abutment tooth selection, class II and class III partial denture design, and characteristics of tooth-borne and conventional partial dentures.