RPD REPORT
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RPD REPORT - Leaderboard
RPD REPORT - Details
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238 questions
| 🇬🇧 | 🇬🇧 |
| The success of the RPD is largely dependent on ______, which requires good understanding of_______ of supporting structure in addition to understanding the ______ of different impression materials | Accuracy of impression; anatomical landmarks and physiology; properties and manipulation |
| Impression of the partially edentulous arch must record accurately the anatomic form of the teeth and surrounding tissues. | FINAL IMPRESSION |
| When evaluating impression materials, 3 components are key to success | 1) to capture accurate and precise details 2) must be strong at the time of removal from the mouth to prevent tearing 3) appropriate material selection |
| Materials used in making final impressions in RPD:Have low tear strength, provide less surface detail than other materials and are not as dimensionally stable as others | Irreversible hydrocolloids |
| Materials used in making final impressions in RPD:can also be used for RPD impressions and especially for secondary corrected or altered cast impressions. | Mercaptan Rubber-base Impression Materials |
| Materials used in making final impressions in RPD:Requires the use of a carefully made impression tray. | Mercaptan Rubber-base Impression Materials |
| Materials used in making final impressions in RPD:Not compatible with the addition reaction silicone impression materials. | Polyether Impression Materials |
| Materials used in making final impressions in RPD:more accurate and easier to use than the other elastic impression materials. | Silicone Impression Materials |
| Materials used in making final impressions in RPD:Have a pleasant odor, moderately high tear strength, and excellent recovery from deformation | Silicone Impression Materials |
| Materials used in making final impressions in RPD:Hydrophobic and can be disinfected in any of the disinfecting solutions with no alteration in accuracy | Silicone Impression Materials |
| Materials used in making final impressions in RPD:Not used as primary impression materials and should never be used for impressions that include remaining natural teeth | Metallic Oxide Paste |
| Materials used in making final impressions in RPD:among the oldest impression materials used in prosthetic dentistry like the plaster of paris | Modeling Plastic |
| Materials used in making final impressions in RPD(Modeling Plastic):lowest fusing of the modeling plastics | Green material |
| Materials used in making final impressions in RPD:More commonly known as mouth-temperature waxes | Impression waxes & Natural resins |
| What type of stone is used for making the fabrication of master cast | Abrasive-resistant type IV stone |
| Markings on the Master Cast | Location of retentive arm for a c-clasp, Location of retentive arm for a bar clasp, Parallel projections on the axial surfaces of the cast, Beading, Location of rests, Location of finishing lines, Location of tissue stop, Height of contour on the teeth and soft tissue created during the survey of the cast |
| Parallel projections on the axial surfaces of the cast is recorded using | Tripoding technique |
| Beading is readily accomplished with a ____ | Cleoid carver. |
| Beading is only done on what arch | Maxillary |
| Purpose of beading | To get a good seal. |
| Palatal contours are restored, enhancing speech and contributing to a natural feeling of a patient. | Finishing lines |
| It serves as a guide for a potential undercut and if feasible, can be used for designing the retentive components of an RPD. | Height of contour |
| Objectives of surveying the master cast: give 1 | To select the most suitable path of placement by following mouth preparations that satisfy the requirements of guiding planes, retention, noninterference, and esthetics |
| Flexibility of clasp depends on many of the following factors | A) the alloy used for the clasp, b) the design and type of clasp, c) whether its form is round or half round, d) whether it is of cast or wrought material, and e) the length of the clasp arm from its point of origin to its termmal end. |
| Retention of clasp depends on | A) the flexibility of the clasp arm, b) the magnitude of the tooth undercut, and c) the depth the clasp terminal is placed into this undercut. |
| The partial denture must be designed so that | 1) it will not stress abutment teeth beyond their physiologic tolerance, 2) it can be easily placed and removed by the patient, 3) it will be retained against reasonable dislodging forces, and 4) it will not create an unfavorable appearance. It is necessary that the diagnostic cast be surveyed with these principles in mind. Xlouth preparation should therefore be planned in accordance with certain factors that will influence the path of placement and removal. |
| Surveying the master cast: The master cast must be surveyed as a new cast, but the prepared _________surfaces will indicate the correct anteroposterior tilt | Proximal guiding plane |
| Blockout - includes not only the areas crossed by the denture framework during seating and removal but also: | 1) areas not involved that are blocked out for convenience; 2) ledges on which clasp patterns are to be placed; 3) relief beneath connectors to avoid tissue impingement; and 4) relief to provide for attachment of the denture base to the framework. |
| May be used satisfactorily as a blockout material. It is easily applied and is easily trimmed with the surveyor blade. | Hard inlay wax |
| TYPES OF BLOCKOUT:proximal tooth surfaces to be used as guiding planes & below height of contour. | Paralleled blockout |
| TYPES OF BLOCKOUT:This blockout should be parallel to the path of insertion and removal. Parallel blockout extends from the survey line to the gingiva | Paralleled blockout |
| TYPES OF BLOCKOUT:is used on buccal or lingual surfaces to facilitate accurate placement of plastic or wax patterns for clasp arms | Shaped blockout or ledging |
| Dimension of relief | 1-1.5 mm |
| Conveying the outline of the proposed prosthesis from the diagnostic cast to the master cast— | Design transfer |
| The process of accurately reproducing a cast | Duplication |
| What is the first step in fabrication of refractory cast | The master cast should be soaked in slurry water for atleast 5 minutes before duplication |
| Plaster of Paris type | Type 1 |
| Plaster of Paris: Mixing time | 10-30 seconds |
| Plaster of Paris: working time | 5-10 mins |
| Plaster of Paris: setting time | 20-30 mins |
| Metallic Oxide Paste:mixing time | 30-45 seconds |
| Metallic Oxide Paste: setting time | 3-5 seconds |
| Properties - Rigid - Low viscosity - Good surface details in thin section - Dimensionally stable - Compatible with gypsum products | Metallic Oxide Paste |
| Extension base edentulous ridge areas of a removable partial denture | Metallic Oxide Paste |
| Used as an impression material for relining distal extension denture bases | Metallic Oxide Paste |
| All metallic oxide pastes have one thing in common with plaster of Paris impression materials | Setting time during which they should not be disturbed |
| Are those that become plastic at higher temperatures and resumes their original form when cooled. (they become hard) | Thermoplastic Material |
| Indications:- Preliminary Impressions (because of its rigidity) - Custom Tray Fabrication - Diagnostic Models | Plaster of Paris |
| Indications:For border correction (border molding | Modeling Plastics |