Questions and Answers
What are the main factors that influence bridge design?
The clinical experiences of the dentist and the clinical condition of the patient.
What is the first option for replacing missing teeth?
Which of the following is NOT an advantage of implants?
What are the span configurations for the resin-bonded fixed dental prosthesis?
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Conventional fixed dental prosthesis is the first treatment modality for restoring a missing tooth.
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The fixed-fixed design in conventional FPD has a rigid connector at both ends of the pontic, and the abutment teeth must have a common path of ______.
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What are some disadvantages of replacing teeth with conventional fixed dental prosthesis?
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What is bridge design based on?
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What is the first treatment option for replacing missing teeth?
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Which of the following are advantages of implants? (Select all that apply)
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What is the span configuration for resin-bonded fixed dental prosthesis?
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Conventional tooth-supported fixed dental prosthesis is the first treatment modality for restoring a missing tooth.
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Name two disadvantages of replacing teeth with conventional fixed dental prosthesis.
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The retainers in a fixed-fixed design must have approximately the same _____ to avoid dislodging.
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What conditions should be met for the abutment teeth used in conventional tooth-supported fixed dental prosthesis?
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Study Notes
Bridge Design
- Bridge design combines artistry and clinical experience of the dentist with the patient's clinical condition.
- No strict rules exist for selecting specific designs; decisions are often based on personal opinion.
Treatment Modalities for Replacing Missing Teeth
- Implant-supported fixed dental prosthesis: Preferred first option.
- Resin-bonded fixed dental prosthesis: Second option available.
- Conventional tooth-supported fixed dental prosthesis: Third option but faces challenges.
- Removable partial dentures (RPD): Last resort option.
Implant-supported Fixed Dental Prosthesis
-
Advantages:
- Preserves adjacent tooth structure, avoiding destructive tooth reduction.
- Maintains bone integrity and provides additional support.
- Retrievable and exhibits resistance to disease.
- Enhances esthetics, function, and speech.
-
Span Length:
- Single tooth replacement feasible with one implant.
- Allows for multiple replacements as needed.
-
Span Configuration:
- Does not require distal abutment with no favorable distribution of abutments.
Resin-bonded Fixed Dental Prosthesis
-
Span Length:
- Suitable for a single tooth or two incisors.
-
Span Configuration:
- Abutments required mesial and distal to the pontic.
-
Abutment Alignment:
- Limit inclinations to less than 15° mesio-distally, ensuring same facio-lingual plane.
- Minimal reduction of preparations complicates modification.
- Abutment Condition: Requires defect-free abutments.
- Occlusion: Not suitable for cases with deep vertical overlap or abnormal habits.
- Periodontal Condition: Abutments must show no mobility.
- Ridge Form: Moderate resorption permitted with no gross soft tissue defects.
Conventional Tooth-supported Fixed Dental Prosthesis
- Long-lasting when abutment teeth are periodontally sound.
-
Disadvantages:
- Risk of damaging healthy tooth structure and pulp due to significant reduction.
- Threat of secondary caries from micro-leakage.
- Potential adverse effects on periodontium, particularly under sub-gingival margins.
- High treatment costs and discomfort involved.
-
Span Length:
- Up to two posterior spans or four incisors.
-
Span Configuration:
- Primarily involves mesial and distal abutments with options for short cantilever pontics.
-
Abutment Alignment:
- Allows for less than 25° inclinations via preparation modification.
-
Abutment Condition:
- Good conditions if existing abutments necessitate crowns; non-vital teeth usable with sufficient structure.
- Occlusion: Requires favorable loading.
- Periodontal Condition: Needs good alveolar support, a favorable crown-root ratio, and absence of mobility.
- Ridge Form: Moderate resorption is acceptable with no gross defects.
Basic Design of Conventional FPD
-
Fixed-fixed Design:
- Features rigid connectors at both ends of the pontic.
- Requires a common path of insertion for abutment teeth, allowing for cementation as a single piece.
- Retainers must have similar retention levels to minimize the risk of dislodgement under applied forces.
Bridge Design
- Bridge design combines artistry and clinical experience of the dentist with the patient's clinical condition.
- No strict rules exist for selecting specific designs; decisions are often based on personal opinion.
Treatment Modalities for Replacing Missing Teeth
- Implant-supported fixed dental prosthesis: Preferred first option.
- Resin-bonded fixed dental prosthesis: Second option available.
- Conventional tooth-supported fixed dental prosthesis: Third option but faces challenges.
- Removable partial dentures (RPD): Last resort option.
Implant-supported Fixed Dental Prosthesis
-
Advantages:
- Preserves adjacent tooth structure, avoiding destructive tooth reduction.
- Maintains bone integrity and provides additional support.
- Retrievable and exhibits resistance to disease.
- Enhances esthetics, function, and speech.
-
Span Length:
- Single tooth replacement feasible with one implant.
- Allows for multiple replacements as needed.
-
Span Configuration:
- Does not require distal abutment with no favorable distribution of abutments.
Resin-bonded Fixed Dental Prosthesis
-
Span Length:
- Suitable for a single tooth or two incisors.
-
Span Configuration:
- Abutments required mesial and distal to the pontic.
-
Abutment Alignment:
- Limit inclinations to less than 15° mesio-distally, ensuring same facio-lingual plane.
- Minimal reduction of preparations complicates modification.
- Abutment Condition: Requires defect-free abutments.
- Occlusion: Not suitable for cases with deep vertical overlap or abnormal habits.
- Periodontal Condition: Abutments must show no mobility.
- Ridge Form: Moderate resorption permitted with no gross soft tissue defects.
Conventional Tooth-supported Fixed Dental Prosthesis
- Long-lasting when abutment teeth are periodontally sound.
-
Disadvantages:
- Risk of damaging healthy tooth structure and pulp due to significant reduction.
- Threat of secondary caries from micro-leakage.
- Potential adverse effects on periodontium, particularly under sub-gingival margins.
- High treatment costs and discomfort involved.
-
Span Length:
- Up to two posterior spans or four incisors.
-
Span Configuration:
- Primarily involves mesial and distal abutments with options for short cantilever pontics.
-
Abutment Alignment:
- Allows for less than 25° inclinations via preparation modification.
-
Abutment Condition:
- Good conditions if existing abutments necessitate crowns; non-vital teeth usable with sufficient structure.
- Occlusion: Requires favorable loading.
- Periodontal Condition: Needs good alveolar support, a favorable crown-root ratio, and absence of mobility.
- Ridge Form: Moderate resorption is acceptable with no gross defects.
Basic Design of Conventional FPD
-
Fixed-fixed Design:
- Features rigid connectors at both ends of the pontic.
- Requires a common path of insertion for abutment teeth, allowing for cementation as a single piece.
- Retainers must have similar retention levels to minimize the risk of dislodgement under applied forces.
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Description
Explore the fundamentals of bridge design in dentistry, highlighting the importance of clinical experience and patient conditions. This quiz also covers various treatment options for replacing missing teeth, including implant-supported fixed dental prostheses. Test your knowledge on these essential topics in dental practice.
