Prosthodontics and Bone Loss in Dentistry

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary challenge faced by a removable partial denture (RPD) design due to changes in the residual ridge?

Consistent alignment of remaining teeth

Stability of the maxillary arch

Increase in overall tooth size

Loss of functional stimulus previously experienced (correct)

What characteristic of a prosthesis is critical for resisting dislodgment forces?

Aesthetic appeal

Flexibility

Mobility

Retention (correct)

Which of the following statements regarding bone loss is true?

Bone loss occurs uniformly in the maxilla and mandible.

Bone loss is greater in the mandible than in the maxilla. (correct)

Bone loss is generally more pronounced in the anterior mandible.

Bone loss does not affect the shape of the arches.

What term describes a denture that replaces all natural teeth?

Complete denture Signup and view all the answers

What happens to the width of the maxillary arch due to bone loss?

It becomes narrower Signup and view all the answers

How does loss of ridge volume affect the need for dental implants?

It creates a need for dental implants. Signup and view all the answers

Which type of denture serves as a temporary solution to replace missing teeth?

Interim or provisional denture Signup and view all the answers

What effect does bone loss typically have on the mandibular arch?

It produces a broader arch. Signup and view all the answers

What is the primary purpose of a fixed or removable dental prosthesis?

To enhance esthetics and stabilize oral functions Signup and view all the answers

Which type of oral mucosa is noted for being more traumatized compared to attached gingiva?

Less keratinized oral mucosa Signup and view all the answers

Which component is NOT part of the clasp assembly for a dental prosthesis?

Advanced retainer Signup and view all the answers

When are temporary dental prostheses typically used?

For short periods to assist functions and esthetics Signup and view all the answers

What defines an abutment in the context of dental prosthetics?

A structure that receives pressure and serves as an anchorage Signup and view all the answers

What does the therapeutic effectiveness of a treatment plan refer to?

Its short-term efficacy and outcomes Signup and view all the answers

Which of the following is a characteristic of a maxillofacial prosthesis?

It is designed to enhance esthetics and function temporarily Signup and view all the answers

Which is NOT a feature of the clasp assembly components?

Permanent anchorage clasp Signup and view all the answers

What are expected outcomes primarily influenced by?

Type of prosthesis chosen Signup and view all the answers

Which of the following best describes unexpected needs in prosthesis management?

Can involve factors both within and beyond our control Signup and view all the answers

What is a critical component in achieving oral health post-treatment?

Recognizing behavioral issues related to plaque control Signup and view all the answers

What defines a tooth-supported space in partial tooth loss?

Presence of teeth both anterior and posterior to the edentulous space Signup and view all the answers

What is a key advantage of a removable partial denture (RPD) designed with tooth support?

It allows for greater stability, support, and retention of the prosthesis Signup and view all the answers

What condition applies to extension base RPDs?

They rely entirely on supporting tissue for stability Signup and view all the answers

What is the function of the male portions of the attachments in a maxillary prosthesis?

To fit into intracoronal rests Signup and view all the answers

Which method best facilitates maxillary prosthesis retention?

Full palatal coverage with intracoronal retainers Signup and view all the answers

What is a possible disadvantage of clasp retained RPD related to the abutment teeth?

Strain on the abutment teeth Signup and view all the answers

What can lead to the development of caries beneath clasp components?

Failure to maintain cleanliness Signup and view all the answers

Which phase of Partial Denture Service focuses on informing the patient?

Education of patient Signup and view all the answers

What is NOT included in the complete oral examination during treatment planning?

Existence of allergies Signup and view all the answers

What must be considered to avoid esthetic issues with clasps on RPD?

Visible tooth surface placement Signup and view all the answers

Which of the following is NOT a part of the treatment sequencing in Partial Denture Service?

Implementation of dental insurance Signup and view all the answers

What is an important step concerning occlusal relations and tooth arrangements in RPD construction?

Establishment and verification Signup and view all the answers

Which factor does NOT affect the strain on abutment teeth in clasp retained RPD?

Oral hygiene practices Signup and view all the answers

What is the primary function of a linguoplate major connector in a removable partial denture?

To contact the lingual surfaces of natural teeth Signup and view all the answers

Which connector includes a portion covering a significant area of the palatal surface?

Palatal plate Signup and view all the answers

What is the minimum anterioposterior dimension of a palatal strap?

8 mm Signup and view all the answers

What shape characterizes the palatal bar connector of a maxillary removable partial denture?

Half-oval Signup and view all the answers

What describes a refractory investment cast?

A cast that withstands high temperatures without disintegration Signup and view all the answers

Which type of rest is located at the incisal edge of a tooth?

Incisal rest Signup and view all the answers

What is a basal seat in the context of a removable partial denture?

The area available to support a denture Signup and view all the answers

Why is the alpha-form of calcium sulfate hemihydrate preferred over the beta-form in dental applications?

It has better physical properties Signup and view all the answers

How is a dental cast surveyor primarily used in dental prosthetics?

To locate and delineate contours of teeth Signup and view all the answers

What is the primary role of functional occlusal registration?

To record the contacts of teeth during mastication Signup and view all the answers

What type of extension does an occlusal rest represent in a removable partial denture?

A rigid extension Signup and view all the answers

Which term refers to the part of a denture that rests directly on the foundation tissues?

Denture base Signup and view all the answers

Which of the following best describes balanced occlusion?

Bilateral contact during excursive movements Signup and view all the answers

Study Notes

Bone Loss

Bone loss is greater in the mandible than in the maxilla.
Bone loss is more pronounced posteriorly than anteriorly.
Bone loss produces broader mandibular arch and constricted maxillary arch.

Attached Gingiva

Attached gingiva of the alveolar bone is replaced with less keratinized oral mucosa.
Less keratinized oral mucosa is more easily traumatized.

Esthetic Impact

Anatomical changes can pose challenges for the fabrication of prostheses.
Challenges can occur with implant-supported prostheses and removable partial dentures.
Temporary prostheses serve for esthetics and function for a short period.

Denture Base

Part of a denture that rests on the base tissue.
Holds the teeth in place.
Expected outcomes accompany the common clinical course of a prosthesis.
Unexpected needs can include tissue damage.

Shared Decision Making

Patients need to recognize behavioral issues related to plaque control to maintain a state of oral health.

Tooth Supported Prostheses

Major categories of partial tooth loss:
- Teeth both anterior and posterior to edentulous space (tooth supported space).
- Teeth anterior only to edentulous space (tooth and tissue supported space).
RPDs utilize abutment teeth and supporting tissues for stability, support, and retention.
RPDs without teeth support at each end of the replacement teeth are extension base RPDs.
Possible disadvantages of clasp-retained RPDs:
- Strain on abutment teeth due to improper tooth prep or clasp design.
- Loss of tissue support under distal extension bases.
- Clasps can be unesthetic, particularly when placed on visible tooth surfaces.
- Caries may form beneath clasp components.

Six Phases of Partial Denture Service

Education of Patient: Informs the patient about health matters for informed consent, patient cooperation, and compliance.
Diagnosis, Treatment Planning, Design, Treatment Sequencing, and Mouth Preparation: Includes thorough medical and dental histories, complete oral examination, and radiographic interpretation.
- Includes the condition of existing restorations, periodontal conditions, response to previous treatment, and vitality of remaining teeth.
Support for Distal Extension Denture Bases: Does not apply to treatment with intracoronal retainers.
Establishment and Verification of Occlusal Relations and Tooth Arrangements: Important step in the construction of RPDs.

Types of Rests

Types of Rests (named by location):
- Occlusal rest: Contacts the occlusal surface of a tooth.
- Lingual/Cingulum rest: Fits into a depression on an abutment tooth's lingual surface.
- Incisal rest: Contacts a tooth at the incisal edge.

Major Connector Definitions

Linguoplate major connector: Covers the lingual surfaces of the natural teeth.
Palatal plate major connector: Covers a significant portion of the palatal surface.
Palatal strap: Anterioposterior dimension not less than 8 mm that traverses the palate.
Palatal bar: Crosses the palate with a characteristic half-oval shape.
Types of Palatal Bars
- Palatal bar: More than 8 mm in anterioposterior dimension.
- Palatal strap: Less than 8 mm in anterioposterior dimension.

Centric Jaw Relation/Centric Occlusion

Occlusion of opposing teeth when the mandible is at centric relation.
May or may not coincide with the maximal intercuspal position.

Balanced Occlusion

Simultaneous bilateral occlusal contact of anterior and posterior teeth during excursive movements.

Functional Occlusal Registration

Occlusal contact of maxillary and mandibular teeth during mastication and deglutition.

Casting Terms

Cast: Life-size likeness formed from poured or injected molten material.
Investment cast: Made of a material that withstands high temperatures.
Dental stones: Alpha-form of calcium sulfate hemihydrate.
Dental cast surveyor: Paralleling instrument used to locate contours and the relative positions of teeth in prosthesis design.

Ridge Definitions

Residual/edentulous ridge: Portion of residual bone and its soft tissue covering remaining after teeth removal.
Basal seat/denture foundation area: Oral anatomy supporting a denture.

Clasp Definitions'

Clasp: Component of the clasp assembly that engages a portion of the tooth surface.
Retentive clasp: Component of the clasp assembly that engages a portion of the tooth surface.
Reciprocal clasp: Counteracts the retention of the retentive clasp.
Cingulum: Part of a tooth that connects the mesial and distal marginal ridges of the tooth.
Incisal/occlusal rest: A rigid extension of a removable partial denture that contacts the occlusal or incisal surface of a tooth.
Minor connector: Connects major connectors to the other parts of removable partial dentures.

Studying That Suits You

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

Description

This quiz examines key concepts in prosthodontics, focusing on bone loss, attached gingiva, and the esthetic impact of anatomical changes on dental prosthetics. Explore the challenges faced when fabricating prostheses and the importance of shared decision-making in maintaining oral health.