Prosthetic Dentistry II: Record Base and Wax Rim Fabrication
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Questions and Answers

What is the purpose of occlusion blocks in prosthetic dentistry?

  • To transfer accurate jaw relationships to an articulator
  • To make maxillomandibular relation records and to arrange teeth (correct)
  • To simulate the finished denture base
  • To provide stability in mouth and on the stone model

    • What are the requirements of a denture base?

  • Biocompatible, easily constructed, rigid, clean & smooth
  • Stable in mouth and on the stone model, biocompatible, rigid, properly extended and accurately adapted to the cast (correct)
  • Economic, dimensionally stable, temporary, permanent
  • Smooth and easily constructed, in proper thickness, clean, relieved from any undercuts

    • What is the purpose of a record base in prosthetic dentistry?

  • To provide stability in mouth and on the stone model
  • To help transferring accurate jaw relationships to an articulator (correct)
  • To arrange teeth
  • To simulate the finished denture base

    • What are the types of temporary record base materials?

    <p>Cold Cure Acrylic, Sprinkle on method, Finger adapted dough method</p> Signup and view all the answers

    When are interim denture bases discarded and replaced?

    <p>Once their role in establishing jaw relation, teeth arrangement and try in is complete</p> Signup and view all the answers

    What are the requirements of a denture base regarding thickness?

    <p>In proper thickness (around $2 mm$ thickness)</p> Signup and view all the answers

    What are the two determinants of the occlusal plane according to the text?

    <p>The incisal edge of the central incisor and the middle third of the retromolar pads bilaterally</p> Signup and view all the answers

    What is the purpose of wax rims in determining the proper vertical dimension of occlusion?

    <p>To aid the clinician in determining the proper vertical dimension of occlusion</p> Signup and view all the answers

    How can the distance between marks on wax rims aid in tooth selection?

    <p>It serves as a guide for tooth selection</p> Signup and view all the answers

    What is one function of a properly contoured wax rim in the anterior region?

    <p>It aids in positioning the anterior teeth</p> Signup and view all the answers

    What does mounting lower cast on an articulator with a centric relation record help to readily see?

    <p>The plane of occlusion</p> Signup and view all the answers

    What is one function of wax rims according to the provided information?

    <p>Developing contour of lips and cheeks</p> Signup and view all the answers

    What is used to make centric relation records according to the text?

    <p>Wax rims</p> Signup and view all the answers

    What is arranged according to labial contours developed in a patient?

    <p>Anterior maxillary teeth</p> Signup and view all the answers

    What is the ideal thickness of the palate for a record base?

    <p>1-2mm</p> Signup and view all the answers

    What is the primary function of occlusion rims?

    <p>Recording jaw relations and arranging teeth</p> Signup and view all the answers

    What is the main material used for record base fabrication?

    <p>Cold self-cure acrylic resins</p> Signup and view all the answers

    How is record base polymerization typically carried out?

    <p>In a pressure pot (20 psi, 110 degrees water, 10-15 minutes)</p> Signup and view all the answers

    What is the purpose of occlusion rim fabrication using a maxillary record base?

    <p>Forming the occlusal aspect and contouring the buccal and labial aspects with a hot plate</p> Signup and view all the answers

    What are the characteristics of an ideal record base?

    <p>Strength and rigidity, accuracy, smooth rounded borders, defined palate thickness and contour by the master cast land</p> Signup and view all the answers

    What is the primary purpose of occlusion blocks in prosthetic dentistry?

    <p>To make maxillomandibular relation records and to arrange teeth</p> Signup and view all the answers

    What are the types of temporary record base materials?

    <p>Acrylic, wax, and silicone</p> Signup and view all the answers

    What is the purpose of a record base in prosthetic dentistry?

    <p>To transfer accurate jaw relationships to an articulator</p> Signup and view all the answers

    What are the requirements of a denture base regarding thickness?

    <p>$2 mm$ thickness</p> Signup and view all the answers

    What is one function of a properly contoured wax rim in the anterior region?

    <p>To establish proper labial contours</p> Signup and view all the answers

    How is record base polymerization typically carried out?

    <p>Using Cold Cure Acrylic Sprinkle on method</p> Signup and view all the answers

    What is the primary purpose of wax rims in prosthetic dentistry?

    <p>Determining the proper vertical dimension of occlusion</p> Signup and view all the answers

    What is arranged according to the labial contours developed in a patient?

    <p>Anterior maxillary teeth</p> Signup and view all the answers

    What aids in positioning the anterior teeth in prosthetic dentistry?

    <p>Wax rim properly contoured in the anterior region</p> Signup and view all the answers

    What serves as a guide for tooth selection in prosthetic dentistry?

    <p>Distance between marks on wax rims</p> Signup and view all the answers

    What are the two determinants of the occlusal plane according to the text?

    <p>Incisal edge of the central incisor and middle third of the retromolar pads bilaterally</p> Signup and view all the answers

    What is used to make centric relation records according to the text?

    <p>Wax rims</p> Signup and view all the answers

    What do wax rims aid in determining?

    <p>Proper vertical dimension of occlusion</p> Signup and view all the answers

    What is readily seen when the lower cast is mounted on an articulator with a centric relation record?

    <p>Occlusal plane</p> Signup and view all the answers

    What is the primary function of occlusion rims in prosthetic dentistry?

    <p>Recording jaw relations and arranging teeth</p> Signup and view all the answers

    What is the primary purpose of record base polymerization?

    <p>To ensure accurate adaptation to the cast</p> Signup and view all the answers

    Which material is mostly used for record base fabrication?

    <p>Cold self-cure acrylic resins</p> Signup and view all the answers

    What are the ideal characteristics of a record base?

    <p>Strength and rigidity, accuracy, smooth rounded borders, defined palate thickness and contour</p> Signup and view all the answers

    What is the process for occlusion rim fabrication using a maxillary record base?

    <p>Heating baseplate wax, forming occlusal aspect, contouring buccal and labial aspects with a hot plate</p> Signup and view all the answers

    What is one function of a properly contoured wax rim in prosthetic dentistry?

    <p>Supporting and stabilizing the denture</p> Signup and view all the answers

    Study Notes

    • 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.

    • 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.

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    DEN203 Prosthetic Dentistry II - Record Base and Wax Rim Fabrication PDF

    Description

    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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