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16 Cards in this Set
- Front
- Back
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Rigid Attatchements |
Allows virtually no movement b/w prosthesis and abutment tooth |
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Classification of higher Classes |
The higher the classification number the greater the degree of resiliency (Movability) and suggests less torque transfer to the tooth or implant |
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What are some Advantages of a Rotational Path RPD? |
Minimizes the number of conventional clasps Conductive to Oral Hygiene Enhances esthetics in anterior rotational path cases |
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How are Direct Retainer Requirements satisfied with Rotational Path RPD? |
Through incorporation of a Rigid Retentive Component Special Rest: The Long Occlusal Rest |
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Where does the Partial rotate into? |
an Undercut in the posterior molar positions Must be In CERVICAL 1/3 or at worst Middle 1/3 NOT OCCLUSAL 1/3 |
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Path usually used in the Maxillary Arch? |
AnteroPosterior Path for esthetic reasons, eliminates clasps on the anterior abutments |
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Path usually used in the Mandibular Arch? |
PosterioAnterior |
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Utilization of Undercuts for a sound Direct Retainer is usually established how? |
By Minor Connectors or Proximal Plate in conjunction with clasps |
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Rotation to be used when anterior teeth are missing unilaterally? |
Lateral Rotation |
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Rotation to be used when Posterior teeth are missing unilaterally? |
Lateral Rotation Engage MB and DB undercuts or ML and DL of the abutment teeth on edentulous side |
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How to the rest preps compare to the typical ones once used before? |
They must be deeper to allow a rest thickness 1.5-1.75mm for Chromium 1.75-2.0mm for Gold |
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How should the rest seats be created? |
Long Rest on abutment tooth with clasp arm helps stabilize movement Should be extended to more than 1/2 the Mesiodistal Dimension of the Clinical Crown |
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Disadvantages of Rotational Path |
-No adjustment of rigid retentive component is possible -Little tolerance for error, technique sensitive -Well prepared occlusal or cingulum rest seats |
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Advantages of Swing Lock Design |
Relatively inexpensive method for using all or most of the remaining teeth |
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Disadvatages of Swing Lock Design |
Relatively Poor esthetic outcome Significant force on the remaining teeth |
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Path of insertion for Swing Lock Design |
From lingual with the hinge open |
