15 Questions
What is the purpose of an incisal rest?
To act as an indirect retainer
Where is the incisal rest seat prepared?
At the incisal angle of a canine or on the incisal edge of an incisor
In which arch is the use of an incisal rest more applicable?
Mandibular arch
What are the disadvantages of the incisal rest?
Is not esthetic due to the display of metal
What is the function of an implant as a rest?
To increase support and stability of the prosthesis
What are the dimensions of an ideal incisal rest seat?
2.5mm wide and 1.5mm deep
What is the primary placement area for an incisal rest?
Disto-incisal angle of a canine
For which tooth is the use of an incisal rest more applicable?
Mandibular canine
What is a benefit of using an implant as a rest for a prosthesis?
Controls vertical movement of the denture base
What is a disadvantage of using an incisal rest?
Causes unfavorable leverage and tooth movement
What is the primary function of an incisal rest?
To serve as an indirect retainer
What is the main disadvantage of using an incisal rest?
Aesthetic issues due to metal display
What is the purpose of using an implant as a rest for a prosthesis?
To provide additional stability to the prosthesis
In the absence of other suitable placements for incisal rests, where can multiple incisal rests be considered?
On mandibular incisors
Where is an incisal rest seat typically prepared?
At the incisal angle of the tooth
Study Notes
Incisal Rests
- The primary function of an incisal rest is to provide support and stability to a prosthesis.
- The incisal rest seat is typically prepared on the incisal edge of a natural tooth.
- The use of an incisal rest is more applicable in the mandibular arch.
Disadvantages of Incisal Rests
- Disadvantages of the incisal rest include potential damage to the supporting tooth.
- Another disadvantage is the possible over-contouring of the prosthesis.
Implants as Rests
- An implant can function as a rest to provide additional support and stability to a prosthesis.
- A benefit of using an implant as a rest is that it reduces the load on natural teeth.
- The primary function of an implant as a rest is to provide additional support to the prosthesis.
Ideal Incisal Rest Seat
- The dimensions of an ideal incisal rest seat are 0.5-1.0 mm deep and 0.5-1.0 mm wide.
- The primary placement area for an incisal rest is on the incisal edge of a natural tooth, typically a canine.
Applicable Teeth and Alternative Placements
- The use of an incisal rest is more applicable on canines.
- In the absence of other suitable placements, multiple incisal rests can be considered on the incisal edges of multiple teeth.
Test your knowledge about incisal rests and their placement in anterior teeth. Learn about the preparation of incisal rest seats and their role as secondary rests, auxiliary rests, or indirect retainers.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
