Ante's Law Bridge and Crown to Root Ratio Quiz

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Questions and Answers

Which of the following can cause peri-implantitis?

Excess cement

What is the advantage of a screw retained implant?

It is retrievable

What is a potential disadvantage of a screw retained implant?

It requires frequent maintenance visits

Which type of bridge design is not recommended for posterior regions?

Single retainer cantilever Signup and view all the answers

Which branch of Dentistry is concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth?

Prosthodontics Signup and view all the answers

Which type of connector is used when one of the abutment teeth is tilted off axis?

Non-rigid connector Signup and view all the answers

What is the purpose of a crown in prosthodontics?

To repair a damaged tooth Signup and view all the answers

Which type of tooth should never be used as an abutment for a bridge?

Endo treated tooth Signup and view all the answers

What is the definition of an intermediate abutment?

A natural tooth without adjacent teeth in proximal contact Signup and view all the answers

What is the purpose of an implant in prosthodontics?

To replace a single missing tooth Signup and view all the answers

What is the function of a connector in a dental bridge?

To connect the retainer to the pontic Signup and view all the answers

Which type of teeth are preferred as abutment teeth for a bridge?

Molars with multiple roots Signup and view all the answers

When is splinting of teeth recommended?

When the abutment tooth has short roots Signup and view all the answers

Which type of root shape is ideal for an abutment tooth?

Divergent roots Signup and view all the answers

When are removable partial dentures indicated?

All of the above Signup and view all the answers

Which of the following is the definition of crown to root ratio in prosthodontics?

The comparison of the length of the crown to the length of the root Signup and view all the answers

What is the ideal crown to root ratio for an abutment tooth for a bridge?

1 to 2 Signup and view all the answers

According to Ante's Law, what should be the relationship between the PDL surface area of the abutment teeth and the imaginary PDL surface area of the missing teeth in a fixed bridge prosthesis?

The PDL surface area of the abutment teeth should be equal to the imaginary PDL surface area of the missing teeth Signup and view all the answers

What would be the prognosis of a bridge that violates Ante's Law?

Poor prognosis Signup and view all the answers

What is the branch of Dentistry concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth?

Prosthodontics Signup and view all the answers

What is the term for the crown that attaches to the abutment in a dental bridge?

Retainer Signup and view all the answers

What is the term for the fake tooth in the center of a dental bridge?

Pontic Signup and view all the answers

What is the term for the tooth to which the bridge attaches in a dental bridge?

Abutment Signup and view all the answers

What is the term for the component that connects the retainer to the pontic in a dental bridge?

Connector Signup and view all the answers

Which treatment option is a popular but expensive way of replacing missing teeth using artificial replacements?

Implant Signup and view all the answers

What is the crown to root ratio that is considered ideal for an abutment tooth for a bridge?

1 to 2 Signup and view all the answers

What is the minimum crown to root ratio that can be used for an abutment tooth?

1 to 1 Signup and view all the answers

What is Ante's Law?

The law that states the PDL surface area of the abutment teeth should be greater than the PDL surface area of the missing teeth Signup and view all the answers

What is the prognosis of a bridge that violates Ante's Law?

Poor prognosis Signup and view all the answers

What happens if there are more missing teeth in a bridge design?

The bridge becomes longer Signup and view all the answers

What is the clinical crown and root that are considered in the crown to root ratio?

Clinical crown and clinical root Signup and view all the answers

Which of the following is a potential disadvantage of a cement retained implant?

It can cause peri-implantitis Signup and view all the answers

What is the advantage of a screw retained implant?

It can be retrievable Signup and view all the answers

What is the main difference between peri-implantitis and periodontitis?

Peri-implantitis occurs around an implant, while periodontitis occurs around natural teeth Signup and view all the answers

What is the purpose of the screw access hole in a screw retained implant?

To provide access for cleaning around the implant Signup and view all the answers

What is one potential problem with a screw retained implant?

The screw may loosen during function Signup and view all the answers

What are the consequences of excess cement in a cement retained implant?

Gum inflammation and bone loss Signup and view all the answers

Which type of tooth is recommended as an abutment for a bridge?

Teeth with multiple roots Signup and view all the answers

When would splinting of teeth be recommended in a bridge?

When the abutment tooth has a small PDL surface area Signup and view all the answers

What is the ideal root shape for an abutment tooth?

Curved and broad roots Signup and view all the answers

When are removable partial dentures indicated?

All of the above Signup and view all the answers

Which arch is contraindicated for a complete denture when only the mandibular anterior teeth are present?

Upper arch Signup and view all the answers

What is an over denture?

A denture that is supported by implants Signup and view all the answers

Which type of bridge design is not recommended for posterior regions?

Cantilever bridge Signup and view all the answers

Which type of connector is used when one of the abutment teeth is tilted off axis?

Non-rigid connector Signup and view all the answers

What is the definition of an intermediate abutment?

An implanted tooth substitute without adjacent teeth in contact Signup and view all the answers

What is the main reason why endo treated teeth should not be used as abutments?

They become weaker due to the removal of dentin Signup and view all the answers

What is the main disadvantage of using compromised periodontal teeth as abutments?

They have compromised periodontal health Signup and view all the answers

When are non-rigid connectors used in bridge design?

When one of the abutment teeth is tilted off axis Signup and view all the answers

Study Notes

Prosthodontics Concepts

Peri-implantitis can be caused by poor oral hygiene, smoking, and genetic predisposition.

Implant Retention

Screw-retained implants offer the advantage of easier retrievability.
A potential disadvantage of screw-retained implants is that the screw access hole can be problematic.

Bridge Design

Using a cantilever design is not recommended for posterior regions.
When one of the abutment teeth is tilted off-axis, a non-rigid connector is used.

Prosthodontics Definition

Prosthodontics is the branch of dentistry concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth.

Abutment Tooth Selection

Teeth that should never be used as abutments for a bridge include endo-treated teeth.
Compromised periodontal teeth are not ideal abutments due to their doubtful prognosis.
Ideal abutment teeth have a root shape that is conical, tapered, and long.

Crown to Root Ratio

The ideal crown to root ratio for an abutment tooth is 2:3 or 1:1.5.
According to Ante's Law, the PDL surface area of the abutment teeth should be equal to or greater than the imaginary PDL surface area of the missing teeth.
Violating Ante's Law can lead to a poor prognosis for the bridge.

Bridge Components

The crown that attaches to the abutment in a dental bridge is called a retainer.
The fake tooth in the center of a dental bridge is called a pontic.
The tooth to which the bridge attaches is called an abutment.
The component that connects the retainer to the pontic is called a connector.

Treatment Options

Removable partial dentures are indicated when there are multiple missing teeth.
An over denture is a type of treatment option that involves placing a denture over existing teeth.

Implant Complications

Excess cement in a cement-retained implant can cause peri-implantitis.
Peri-implantitis is different from periodontitis in that it occurs around implants rather than natural teeth.

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Crown to Root Ratio and Periodontal Tissues Quiz

Questions and Answers

Which of the following can cause peri-implantitis?

What is the advantage of a screw retained implant?

What is a potential disadvantage of a screw retained implant?

Which type of bridge design is not recommended for posterior regions?

Which branch of Dentistry is concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth?

Which type of connector is used when one of the abutment teeth is tilted off axis?

What is the purpose of a crown in prosthodontics?

Which type of tooth should never be used as an abutment for a bridge?

What is the definition of an intermediate abutment?

What is the purpose of an implant in prosthodontics?

What is the function of a connector in a dental bridge?

Which type of teeth are preferred as abutment teeth for a bridge?

When is splinting of teeth recommended?

Which type of root shape is ideal for an abutment tooth?

When are removable partial dentures indicated?

Which of the following is the definition of crown to root ratio in prosthodontics?

What is the ideal crown to root ratio for an abutment tooth for a bridge?

According to Ante's Law, what should be the relationship between the PDL surface area of the abutment teeth and the imaginary PDL surface area of the missing teeth in a fixed bridge prosthesis?

What would be the prognosis of a bridge that violates Ante's Law?

What is the branch of Dentistry concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth?

What is the term for the crown that attaches to the abutment in a dental bridge?

What is the term for the fake tooth in the center of a dental bridge?

What is the term for the tooth to which the bridge attaches in a dental bridge?

What is the term for the component that connects the retainer to the pontic in a dental bridge?

Which treatment option is a popular but expensive way of replacing missing teeth using artificial replacements?

What is the crown to root ratio that is considered ideal for an abutment tooth for a bridge?

What is the minimum crown to root ratio that can be used for an abutment tooth?

What is Ante's Law?

What is the prognosis of a bridge that violates Ante's Law?

What happens if there are more missing teeth in a bridge design?

What is the clinical crown and root that are considered in the crown to root ratio?

Which of the following is a potential disadvantage of a cement retained implant?

What is the advantage of a screw retained implant?

What is the main difference between peri-implantitis and periodontitis?

What is the purpose of the screw access hole in a screw retained implant?

What is one potential problem with a screw retained implant?

What are the consequences of excess cement in a cement retained implant?

Which type of tooth is recommended as an abutment for a bridge?

When would splinting of teeth be recommended in a bridge?

What is the ideal root shape for an abutment tooth?

When are removable partial dentures indicated?

Which arch is contraindicated for a complete denture when only the mandibular anterior teeth are present?

What is an over denture?

Which type of bridge design is not recommended for posterior regions?

Which type of connector is used when one of the abutment teeth is tilted off axis?

What is the definition of an intermediate abutment?

What is the main reason why endo treated teeth should not be used as abutments?

What is the main disadvantage of using compromised periodontal teeth as abutments?

When are non-rigid connectors used in bridge design?

Study Notes

Prosthodontics Concepts

Implant Retention

Bridge Design

Prosthodontics Definition

Abutment Tooth Selection

Crown to Root Ratio

Bridge Components

Treatment Options

Implant Complications

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