Prosthetic Dentistry II: Record Base and Wax Rim Fabrication

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are the two determinants of the occlusal plane when the wax rim is ideally contoured and mounted?

  • The incisal edge of the central incisor and the distal third of the retromolar pads bilaterally
  • The incisal edge of the lateral incisor and the distal third of the retromolar pads bilaterally
  • The incisal edge of the lateral incisor and the middle third of the retromolar pads bilaterally
  • The incisal edge of the central incisor and the middle third of the retromolar pads bilaterally (correct)

What is the purpose of contouring the wax rim with a rim former?

  • To develop the desired lip and cheek contours (correct)
  • To aid in tooth selection
  • To determine the proper vertical dimension of occlusion
  • To make centric relation records

How do wax rims aid in determining the proper vertical dimension of occlusion?

  • By serving as a general aid in tooth selection
  • By aiding in determining the proper lip and cheek contours (correct)
  • By aiding in determining the proper distance between upper and lower teeth
  • By marking the position of the corners of the mouth

What serves as a guide for tooth selection when marked on wax rims?

<p>The distance between marks indicating position of corners of mouth (D)</p> Signup and view all the answers

What part of a properly contoured wax rim aids in positioning anterior teeth?

<p>The anterior region (arrows) (C)</p> Signup and view all the answers

What is used to make centric relation records?

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

Where are anterior maxillary teeth arranged according to developed contours?

<p>According to labial contours developed in the patient (B)</p> Signup and view all the answers

Who is Rana Turunç Oğuzman?

<p>Professor at Altınbaş Üniversitesi (D)</p> Signup and view all the answers

What are the requirements of a denture base?

<p>Stable, biocompatible, rigid, properly extended, relieved from any undercuts (C)</p> Signup and view all the answers

What is the purpose of occlusion blocks?

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

What is the function of a record base?

<p>To simulate the finished denture base and transfer accurate jaw relationships to an articulator (A)</p> Signup and view all the answers

What happens to temporary record bases once their role is complete?

<p>They are discarded and replaced by denture base material (C)</p> Signup and view all the answers

What is the purpose of using Cold Cure Acrylic in record base fabrication?

<p>To construct temporary record bases (C)</p> Signup and view all the answers

What are the types of temporary record base materials mentioned in the text?

<p>Not provided in text (A), Not provided in text (B), Not provided in text (C), Not provided in text (D)</p> Signup and view all the answers

Which material is mostly used for record bases?

<p>Cold self-cure acrylic resin (B)</p> Signup and view all the answers

What is the purpose of occlusion rims?

<p>For jaw relation recording and tooth arrangement (D)</p> Signup and view all the answers

What is the sprinkle-on technique used for in maxillary record base fabrication?

<p>Adding resin (B)</p> Signup and view all the answers

What is involved in mandibular wax rim fabrication?

<p>Centering the rim over the crest of the ridge (C)</p> Signup and view all the answers

What is used to determine incisor position and occlusal plane?

<p>&quot;Fox&quot; occlusal plane (C)</p> Signup and view all the answers

How are maxillary and mandibular wax rims fabricated?

<p>Using a hot plate (occlusal plane former) and various instruments like a wax spatula and paper towel. (A)</p> Signup and view all the answers

Flashcards

What is a record base?

The base of a denture that transfers the bite registration to the master cast, ensuring strength and accuracy.

What are the ideal characteristics of a record base?

It should be rigid, smooth, and not move on the cast, resembling the final denture's thickness.

What materials are commonly used for record bases?

Cold-curing acrylic resin and light-curing resin are the most popular materials for creating record bases.

How is a record base fabricated?

It involves adding resin to the cast, then allowing it to solidify or cure.

Signup and view all the flashcards

How is a maxillary record base fabricated?

For maxillary record bases, a sprinkle-on technique is used to add resin, with added reinforcement on the ridge crest to prevent sagging.

Signup and view all the flashcards

How is a mandibular record base fabricated?

Mandibular record bases require reinforcement on the ridge area, while being thinner to allow for tooth placement.

Signup and view all the flashcards

How are record bases prepared?

The record bases are gently removed from the cast after soaking them in hot water to soften the wax.

Signup and view all the flashcards

How are unfinished maxillary record bases modified?

Trimming excess flash and thinning the ridge area are crucial for the maxillary record base.

Signup and view all the flashcards

What are the characteristics of a completed record base?

A finished record base should have a consistent thickness, no gaps or holes, and smooth edges.

Signup and view all the flashcards

What are occlusion rims?

Occlusion rims are the surfaces on the denture base that help record the bite and determine the arrangement of the artificial teeth.

Signup and view all the flashcards

What are the purposes of wax occlusion rims?

Wax occlusion rims are used to transfer the bite registration, shape the lip and cheek contours, and measure the vertical dimension of the bite.

Signup and view all the flashcards

How is a maxillary wax rim fabricated?

The maxillary wax rim is shaped to form the occlusal surface and mimic the contours of the lips and cheeks.

Signup and view all the flashcards

How is a mandibular wax rim fabricated?

The mandibular wax rim is carefully placed over the ridge crest and shaped to avoid impinging on the tongue.

Signup and view all the flashcards

What is the 'Fox' occlusal plane guide used for?

The position of the front teeth and the bite plane are determined using a special tool called the 'Fox' occlusal plane guide.

Signup and view all the flashcards

Why is it important to verify the level and angulation of the occlusal plane?

It ensures the bite plane is at the right height and angle, which is crucial for proper chewing and aesthetics.

Signup and view all the flashcards

What tools are used for fabricating wax occlusion rims?

A hot plate is used to melt and shape the wax occlusion rims, while spatulas and paper towels are used to refine the contour of the rims.

Signup and view all the flashcards

What is jaw relation recording?

The process of determining the exact position of the jaw, especially the vertical dimension of the bite, using record bases and wax rims.

Signup and view all the flashcards

What is tooth arrangement?

The process of choosing and arranging the artificial teeth on the denture base based on the jaw relation record and the patient's facial characteristics.

Signup and view all the flashcards

What factors are considered during tooth arrangement?

It involves considering the patient's facial features, bite, and speech to achieve a natural-looking and functional result.

Signup and view all the flashcards

Study Notes

  • Record base plays a crucial role in denture fabrication, ensuring strength, rigidity, and accuracy.
  • Ideal record base should not move on the cast, have smooth, rounded, well-polished borders, and palate thickness resembling finished dentures.
  • Mostly used materials for record bases are cold self-cure acrylic resin and light cure resin.
  • Fabrication of record bases and wax rims involves various instruments and materials like baseplate wax, wax spatula, Hanau torch, cloth polishing wheel, large camel’s hair brush, red handle knife, celluloid mm rule, Bunsen burner, and autopolymerizing acrylic resin.
  • Procedures for record base fabrication include blocking out master casts, adding resin, and polymerization.
  • For maxillary record base fabrication, the sprinkle-on technique is used to add resin, and the ridge crest is reinforced to prevent slumping.
  • For mandibular record base fabrication, the ridge portion must be reinforced and thin to facilitate tooth placement.
  • Record base preparation involves soaking the polymerized record base and casts in hot water to soften the block-out wax and gently removing the record bases from the master cast.
  • Maxilla areas requiring modification on unfinished record bases include trimming excess flash and thinning the ridge lap portion.
  • Completed record bases should have a consistent thickness, no porosity or voids, and smooth, rounded flanges.
  • Occlusion rims are occluding surfaces constructed on record bases or permanent denture bases for jaw relation recording and tooth arrangement.
  • For wax occlusion rims, they are used for face bow transfer records, developing contours of the lips and cheeks, and measuring the vertical dimension of occlusion.
  • Maxillary wax rim fabrication involves heating a sheet of baseplate wax, forming the occlusal aspect of the rim, and contouring the buccal and labial contours.
  • Mandibular wax rim fabrication involves centering the rim over the crest of the ridge and ensuring lingual contours do not impinge on tongue space.
  • Determine incisor position and occlusal plane using a "Fox" occlusal plane and verify the proper level and angulation of the occlusal plane.
  • Fabricate maxillary and mandibular wax rims using a hot plate (occlusal plane former) and various instruments like a wax spatula and paper towel.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

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

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser