40 Questions
What is the purpose of occlusion blocks in prosthetic dentistry?
To make maxillomandibular relation records and to arrange teeth
What are the requirements of a denture base?
Stable in mouth and on the stone model, biocompatible, rigid, properly extended and accurately adapted to the cast
What is the purpose of a record base in prosthetic dentistry?
To help transferring accurate jaw relationships to an articulator
What are the types of temporary record base materials?
Cold Cure Acrylic, Sprinkle on method, Finger adapted dough method
When are interim denture bases discarded and replaced?
Once their role in establishing jaw relation, teeth arrangement and try in is complete
What are the requirements of a denture base regarding thickness?
In proper thickness (around $2 mm$ thickness)
What are the two determinants of the occlusal plane according to the text?
The incisal edge of the central incisor and the middle third of the retromolar pads bilaterally
What is the purpose of wax rims in determining the proper vertical dimension of occlusion?
To aid the clinician in determining the proper vertical dimension of occlusion
How can the distance between marks on wax rims aid in tooth selection?
It serves as a guide for tooth selection
What is one function of a properly contoured wax rim in the anterior region?
It aids in positioning the anterior teeth
What does mounting lower cast on an articulator with a centric relation record help to readily see?
The plane of occlusion
What is one function of wax rims according to the provided information?
Developing contour of lips and cheeks
What is used to make centric relation records according to the text?
Wax rims
What is arranged according to labial contours developed in a patient?
Anterior maxillary teeth
What is the ideal thickness of the palate for a record base?
1-2mm
What is the primary function of occlusion rims?
Recording jaw relations and arranging teeth
What is the main material used for record base fabrication?
Cold self-cure acrylic resins
How is record base polymerization typically carried out?
In a pressure pot (20 psi, 110 degrees water, 10-15 minutes)
What is the purpose of occlusion rim fabrication using a maxillary record base?
Forming the occlusal aspect and contouring the buccal and labial aspects with a hot plate
What are the characteristics of an ideal record base?
Strength and rigidity, accuracy, smooth rounded borders, defined palate thickness and contour by the master cast land
What is the primary purpose of occlusion blocks in prosthetic dentistry?
To make maxillomandibular relation records and to arrange teeth
What are the types of temporary record base materials?
Acrylic, wax, and silicone
What is the purpose of a record base in prosthetic dentistry?
To transfer accurate jaw relationships to an articulator
What are the requirements of a denture base regarding thickness?
$2 mm$ thickness
What is one function of a properly contoured wax rim in the anterior region?
To establish proper labial contours
How is record base polymerization typically carried out?
Using Cold Cure Acrylic Sprinkle on method
What is the primary purpose of wax rims in prosthetic dentistry?
Determining the proper vertical dimension of occlusion
What is arranged according to the labial contours developed in a patient?
Anterior maxillary teeth
What aids in positioning the anterior teeth in prosthetic dentistry?
Wax rim properly contoured in the anterior region
What serves as a guide for tooth selection in prosthetic dentistry?
Distance between marks on wax rims
What are the two determinants of the occlusal plane according to the text?
Incisal edge of the central incisor and middle third of the retromolar pads bilaterally
What is used to make centric relation records according to the text?
Wax rims
What do wax rims aid in determining?
Proper vertical dimension of occlusion
What is readily seen when the lower cast is mounted on an articulator with a centric relation record?
Occlusal plane
What is the primary function of occlusion rims in prosthetic dentistry?
Recording jaw relations and arranging teeth
What is the primary purpose of record base polymerization?
To ensure accurate adaptation to the cast
Which material is mostly used for record base fabrication?
Cold self-cure acrylic resins
What are the ideal characteristics of a record base?
Strength and rigidity, accuracy, smooth rounded borders, defined palate thickness and contour
What is the process for occlusion rim fabrication using a maxillary record base?
Heating baseplate wax, forming occlusal aspect, contouring buccal and labial aspects with a hot plate
What is one function of a properly contoured wax rim in prosthetic dentistry?
Supporting and stabilizing the denture
Study Notes
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Record base: part of a denture that provides support and stability to the denture itself
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Ideal record base characteristics: strength and rigidity, accuracy, smooth rounded borders, palate thickness (1-2mm), palate thickness and contour defined by the master cast land
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Materials: mostly used are cold self-cure and light cure acrylic resins, baseplate wax, swaged tin, aluminum foil
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Record base fabrication: blocking out master casts, using a red pencil, flowing wax over outlined areas, using a cloth polishing wheel, large camel’s hair brush, and a red handle knife, using a Bunsen burner and autopolymerizing acrylic resin
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Record base polymerization: process in a pressure pot (20 psi, 110 degrees water, 10-15 minutes), or under an overturned rubber mixing bowl
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Record base preparation: soaking the polymerized record base and casts in hot water, removing the record bases without damaging the casts, removing excess block-out wax, and modifying unfinished record bases
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Completed record bases: consistencies in palate thickness, retromolar pad coverage, thin labial areas, roughened ridge areas, and no porosity or voids on tissue surfaces
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Occlusion rims: occluding surfaces constructed on record bases or permanent denture bases for recording jaw relations and arranging teeth
-
Occlusion rim fabrication: using a maxillary record base, heating baseplate wax, forming the occlusal aspect, and contouring the buccal and labial aspects with a hot plate
-
Instruments and materials: baseplate wax, wax spatula, occlusal plane former (hot plate), technical procedures involve heating and forming wax and using a Bunsen burner
-
Record base functions: support and stability, accurate adaptation to the cast, and proper occlusal relationships.
-
Record base: part of a denture that provides support and stability to the denture itself
-
Ideal record base characteristics: strength and rigidity, accuracy, smooth rounded borders, palate thickness (1-2mm), palate thickness and contour defined by the master cast land
-
Materials: mostly used are cold self-cure and light cure acrylic resins, baseplate wax, swaged tin, aluminum foil
-
Record base fabrication: blocking out master casts, using a red pencil, flowing wax over outlined areas, using a cloth polishing wheel, large camel’s hair brush, and a red handle knife, using a Bunsen burner and autopolymerizing acrylic resin
-
Record base polymerization: process in a pressure pot (20 psi, 110 degrees water, 10-15 minutes), or under an overturned rubber mixing bowl
-
Record base preparation: soaking the polymerized record base and casts in hot water, removing the record bases without damaging the casts, removing excess block-out wax, and modifying unfinished record bases
-
Completed record bases: consistencies in palate thickness, retromolar pad coverage, thin labial areas, roughened ridge areas, and no porosity or voids on tissue surfaces
-
Occlusion rims: occluding surfaces constructed on record bases or permanent denture bases for recording jaw relations and arranging teeth
-
Occlusion rim fabrication: using a maxillary record base, heating baseplate wax, forming the occlusal aspect, and contouring the buccal and labial aspects with a hot plate
-
Instruments and materials: baseplate wax, wax spatula, occlusal plane former (hot plate), technical procedures involve heating and forming wax and using a Bunsen burner
-
Record base functions: support and stability, accurate adaptation to the cast, and proper occlusal relationships.
Test your knowledge on the fabrication of record base and wax rim in prosthetic dentistry with this quiz. Topics covered include the purpose of occlusion blocks, denture base adaptation, and maxillomandibular relation records.
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