What is modification in Kennedy classification?
Missing teeth after classifing the scenario, into Kennedy Class I, II III or IV are referred to as modification and are designated by the number of such spaces (not number of missing teeth).
What determines the basic classification of edentulous arches?
The most posterior edentulous space determines the class of the arch for Classes I through IV. The length of the edentulous space, i.e. the number of missing teeth or the number of prosthetic teeth to be used on the denture, is not considered in the classification.
What is altered cast technique?
The altered cast technique allows the ridge, recorded in functional form, to be related to the teeth so that when the prosthesis is seated, it derives support simultaneously from the teeth and the denture base.
What are indirect retainers in RPD?
An indirect retainer consists of a minor connector and a rest, and helps to stabilize the distal extension RPD, indirectly (compared to direct retention with clasps), when the patient eats sticky foods.
What is the difference between edentulous and dentate?
Edentulous subjects were defined as having zero teeth present, and dentate subjects were defined as having more than or equal to 20 teeth and were identified by an examination of the clinical database for subjects in the process of having a pair of complete dentures fabricated or in the school’s recall protocol.
How is the denture base area classified?
Denture base resins are extensively used in dentistry for a variety of purposes. These materials can be classified as chemical, heat, light, and microwave polymerization materials depending upon the factor which starts the polymerization reaction.
What is indirect retainer in RPD?
How are dentures classified?
Dentures come in two forms: complete and partial. A complete denture is a full-coverage prosthetic device that stands-in for an entire dental arch, whereas a removable partial denture replaces several missing teeth at once.
What are the three parts of denture?
Parts of a complete denture (1) Denture base (2) Denture flange (3) Denture teeth (4) Denture border [2].
What is RPA and RPI?
The RPA clasp was developed to deal with the problems encountered with the use of the RPI clasp. The initials signify rest, proximal plate, and Akers clasp arm. The mesial rest and proximal plate are designed identically to those of the RPI clasp. The difference is in the retentive arm.
Why is RPI system used?
RPI System Used to prevent distal movement/tipping of abutment tooth to a free end saddle. Allows the free saddle to rotate slightly without damaging the soft tissues or abutment tooth.
What are the 5 forms of indirect retainers?
Forms of Indirect Retainers
- Auxiliary occlusal rest.
- Canine rests.
- Canine extensions from occlusal rests.
- Cingulum bars (continuous bars) and linguoplates.
- Modification areas.
- Rugae support.
Which Kennedy design must include indirect retainer?
All Kennedy Class I, Class II, and long span Class IV removable partial dentures require effective indirect retention. When the posterior portion of a Kennedy Cl I or Cl II RPD is subjected to occlusally directed dislodging forces: 1.
What is Dentulous and edentulous?
Possessing teeth. The opposite is edentulous.
What is Endentia?
any of the placental mammals that constitute the order Edentata. Edentates are primitive mammals, lacking teeth or having only peg-like teeth from which enamel is absent, for example, sloths, anteaters, armadillos.
What are the different types of dentures?
Types of dentures
- traditional/conventional complete full dentures.
- partial dentures.
- custom dentures.
- immediate dentures.
- implant supported dentures.
- snap-in dentures.
- overdentures.
- upper dentures.
What are the types of denture base materials?
Denture Base Material
- Methacrylate.
- Resin.
- Acrylic Acid Resin.
- Poly(methyl Methacrylate)
- Monomer.
- Multi Walled Nanotube.
- Denture.
- Denture Base.