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Questions and Answers
What is the primary focus of the lecture based on the provided information?
What is the primary focus of the lecture based on the provided information?
According to the information, what is a key aspect covered in the lecture?
According to the information, what is a key aspect covered in the lecture?
What department is presenting on Monday, February 21, 2018?
What department is presenting on Monday, February 21, 2018?
In what context is 'Surveying' being presented?
In what context is 'Surveying' being presented?
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What specific function can be directly derived from the listed lecture objectives?
What specific function can be directly derived from the listed lecture objectives?
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What is the primary purpose of surveying in the context of removable partial dentures?
What is the primary purpose of surveying in the context of removable partial dentures?
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Which of the following defines an undercut in the context of surveying?
Which of the following defines an undercut in the context of surveying?
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What is the 'survey line' in removable partial denture design?
What is the 'survey line' in removable partial denture design?
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Which of the following is NOT a reason for undercuts in a partially edentulous mouth?
Which of the following is NOT a reason for undercuts in a partially edentulous mouth?
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What is the main difference between desirable and undesirable undercuts?
What is the main difference between desirable and undesirable undercuts?
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Which component of a metallic removable partial denture is designed to be flexible?
Which component of a metallic removable partial denture is designed to be flexible?
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What is the path of insertion of a removable partial denture?
What is the path of insertion of a removable partial denture?
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The 'height of contour' (maximum bulge) is also known as the:
The 'height of contour' (maximum bulge) is also known as the:
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What is the purpose of using an undercut gauge in the surveying process?
What is the purpose of using an undercut gauge in the surveying process?
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Which of the following factors is NOT a primary consideration when determining the path of placement and removal for a removable partial denture?
Which of the following factors is NOT a primary consideration when determining the path of placement and removal for a removable partial denture?
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The location of an undercut area can be changed by:
The location of an undercut area can be changed by:
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What is the purpose of surveying the master cast?
What is the purpose of surveying the master cast?
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What is the purpose of recording the cast position during surveying?
What is the purpose of recording the cast position during surveying?
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Which instrument is used to trim blockout material parallel to the path of placement?
Which instrument is used to trim blockout material parallel to the path of placement?
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What does tilting a cast during surveying simulate?
What does tilting a cast during surveying simulate?
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What is the surveying process used to determine relative to tooth surfaces?
What is the surveying process used to determine relative to tooth surfaces?
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What is the primary vertical extension recommended for a guide surface?
What is the primary vertical extension recommended for a guide surface?
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Which of the following best describes the function of guiding planes in removable partial denture design?
Which of the following best describes the function of guiding planes in removable partial denture design?
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What is the main purpose of a dental surveyor?
What is the main purpose of a dental surveyor?
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How can the location of the undercut area on a cast be altered during surveying?
How can the location of the undercut area on a cast be altered during surveying?
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Within the context of surveying, what action aids in stabilizing a prosthesis against horizontal stress?
Within the context of surveying, what action aids in stabilizing a prosthesis against horizontal stress?
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What is the purpose of the analyzing rod during the surveying process?
What is the purpose of the analyzing rod during the surveying process?
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Which component of the dental surveyor allows for vertical movement and holds various surveying tools?
Which component of the dental surveyor allows for vertical movement and holds various surveying tools?
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What is the role of a carbon marker in the surveying process?
What is the role of a carbon marker in the surveying process?
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What is the primary reason for tilting the cast during the surveying process?
What is the primary reason for tilting the cast during the surveying process?
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Which of the following is NOT a consideration when selecting the path of insertion?
Which of the following is NOT a consideration when selecting the path of insertion?
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What is the significance of establishing guiding planes in removable partial denture design?
What is the significance of establishing guiding planes in removable partial denture design?
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What is the recommended tolerance for error when using three reference points during cast surveying?
What is the recommended tolerance for error when using three reference points during cast surveying?
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Why is it important to avoid gross inclination of the cast during surveying?
Why is it important to avoid gross inclination of the cast during surveying?
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What is the purpose of tripoding or scoring the cast after the path of insertion has been selected?
What is the purpose of tripoding or scoring the cast after the path of insertion has been selected?
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Which step immediately follows the selection of a proper path of insertion?
Which step immediately follows the selection of a proper path of insertion?
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What is the most favorable path of insertion in relation to the occlusal plane?
What is the most favorable path of insertion in relation to the occlusal plane?
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When surveying a mandibular cast, which anatomical structure is LEAST likely to cause interference for a lingual bar major connector?
When surveying a mandibular cast, which anatomical structure is LEAST likely to cause interference for a lingual bar major connector?
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What is the recommended approach when vertical minor connectors interfere with the patient's tongue?
What is the recommended approach when vertical minor connectors interfere with the patient's tongue?
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What should be done if a retentive area is located too high on an abutment tooth?
What should be done if a retentive area is located too high on an abutment tooth?
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In the context of removable partial denture design, what is the primary purpose of surveying the diagnostic cast?
In the context of removable partial denture design, what is the primary purpose of surveying the diagnostic cast?
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When selecting between two equally suitable paths of insertion, which criterion should guide the final decision?
When selecting between two equally suitable paths of insertion, which criterion should guide the final decision?
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Before duplication, what is the purpose of blocking out undercuts on the master cast?
Before duplication, what is the purpose of blocking out undercuts on the master cast?
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What type of blockout is applied to guiding-plane areas on the master cast?
What type of blockout is applied to guiding-plane areas on the master cast?
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What thickness of relief is generally provided for the residual ridges on the master cast when preparing for denture base material?
What thickness of relief is generally provided for the residual ridges on the master cast when preparing for denture base material?
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Flashcards
Surveyor Tools
Surveyor Tools
Instruments used to measure and determine the form of dental prosthetics.
Purpose of Surveying
Purpose of Surveying
To analyze and prepare the optimal design for removable prosthodontics.
Using the Surveyor
Using the Surveyor
The process of placing and adjusting tools to evaluate dental casts.
Prosthodontics
Prosthodontics
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Objectives of Surveying
Objectives of Surveying
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Guiding Planes
Guiding Planes
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Functions of Guiding Planes
Functions of Guiding Planes
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Frictional Contact
Frictional Contact
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Dental Surveyor
Dental Surveyor
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Surveying Procedure
Surveying Procedure
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Analyzing Rod
Analyzing Rod
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Undercut Gauge
Undercut Gauge
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Dental Surveyor Parts
Dental Surveyor Parts
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Surveying
Surveying
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Denture Base
Denture Base
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Survey Line
Survey Line
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Undercut
Undercut
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Types of Undercuts
Types of Undercuts
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Path of Insertion
Path of Insertion
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Path of Removal
Path of Removal
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Retainers
Retainers
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Gross Inclination
Gross Inclination
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Clasp Placement
Clasp Placement
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Tripoding
Tripoding
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Path of Placement
Path of Placement
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Retentive Areas
Retentive Areas
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Interference
Interference
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Height of Contour
Height of Contour
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Tilting the Cast
Tilting the Cast
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Bony Prominences
Bony Prominences
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Clasp Arms
Clasp Arms
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Esthetics in Surveying
Esthetics in Surveying
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Guiding-Plane Areas
Guiding-Plane Areas
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Parallel Blockout
Parallel Blockout
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Relief in Cast
Relief in Cast
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Study Notes
Surveying
- Surveying is the process of locating and delineating the contour and position of teeth and associated structures before designing a removable partial denture.
- The objectives of the lecture include understanding surveyor tools and how to use the surveyor.
Objectives of the Lecture
- Understand surveyor tools
- How to use the surveyor
Removable Partial Prosthodontics
- This is a dental procedure covered in Chapter 11 of McCracken's Removable Partial Prosthodontics.
Component Parts of Removable Partial Dentures
- Denture Base
- Artificial Teeth
- Supporting Rests
- Connectors (Major and Minor)
- Retainers (Direct and Indirect)
Undercuts on Teeth
- Undercuts are areas below the height of the tooth contour, a dig or burrow
- The height of the contour represents the most bulbous and convex part of the tooth, also known as the maximum bulge or survey line
- The survey line is a line outlined on a cast by a surveyor, marking the greatest prominence of tooth contour
Types of Undercuts
- Desirable
- Undesirable (except for denture retention)
Components of Metallic Removable Partial Dentures
- Clasp arms are located in undercut areas to retain the restoration against dislodging forces
- The clasp arms are flexible, unlike other parts of the denture
Path of Insertion/Removal
- Path of Insertion (PI): The direction a restoration moves from initial contact with supporting teeth to resting position, where occlusal rests are seated, and the denture base is in contact with the tissue
- Path of Removal: The opposite direction of the path of insertion
Selection of the Path of Insertion
- Most favorable PI is perpendicular to the occlusal plane
- Patients often insert dentures under biting force
- If displacement is anticipated, use the least displacing forces
- If undercuts are present but not efficient (zero tilt), another path should be decided
Factors Affecting Path of Insertion
- Interferences (changing the path of insertion, contouring the tooth surface, or surgery to remove interfering structures)
- Retentive undercuts (equal depth and permitting the location of clasp tips in the gingival third of the tooth)
- Esthetics (made possible with less clasp metal and less base material displayed)
- Guiding planes
Guiding Planes
- Flat axial surfaces in an occluso-gingival direction on the proximal or lingual surfaces of teeth, parallel to the path of insertion
- Guiding the prosthesis in or out of place without excessive forces against the teeth
- Providing bracing and stability when located on the axial lingual surface of the tooth
- Minimizing wedging stresses on abutment teeth and spaces that the denture makes with the teeth. making the prosthesis easier to clean
The Denial/Dental Surveyor
- "Paralleling Instrument" used to determine the survey line of teeth, identify and measure undercuts and determine the relative parallelism of surfaces
- Enables a person to draw a contour map on the teeth and tissue areas of the cast.
Surveyor Tools
- Analyzing rods
- Carbon marker
- Undercut Gauge
- Wax trimmer
Procedures of Surveying
- Placement of the casting
- Altering the cast position anteroposteriorly
- Tilting the cast laterally until equal retentive areas exist
- Eliminating areas of interference by reshaping tooth surfaces; permits more aesthetic placement
- Drawing the survey line
- Locating clasp terminals
- Blocking undesirable undercuts
- Tripoding/scoring the cast
Errors/reference points
- Errors of 0.2 mm are anticipated when a cast has three reference points
Locations of Undercuts
- Undercuts location can changed by tiliting the cast anteriorly and laterally
The Master Cast
- Selecting most suitable placement path following mouth preparations
- Measuring retentive areas; finding appropriate location for clasp terminals
- Trimming blockout parallel to placement path
- Determining factors of placement and removal including guiding planes, retentive areas, interference, and esthetics
Machining Cast Restorations
- Procedure for manipulating the cast restoration using machine tools.
Surveying Ceramic Veneer Crowns
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Procedure of surveying ceramic veneer crowns.
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Description
This quiz covers the essential concepts of surveying as it pertains to removable partial dentures. Participants will explore definitions, functions, and key objectives that guide the design and implementation of denture solutions. Additionally, it addresses the nuances of undercuts and the path of insertion critical to effective denture fitting.