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Products
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 |  | | Non-Resilient Attachments
Sterngold offers three choices of non-resilient (rigid), intracoronal attachments. The Stern Latch® and C&M McCollum are precision attachments. The Biloc/Plasta combination is semiprecision. The Stern Latch®... |
|  | | Resilient Attachments
Sterngold offers resilient partial denture attachments with both an intracoronal and an extracoronal point of connection. Those with an extracoronal point of connection (ERA, Dalbo,... |
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The following are general guidelines that may be used to help you to decide on which attachment might be best for a particular situation. They are based on 80 years of experience with dental attachments, but the final choice must be based on the particular dentist's philosophy, education, and experience. Based on your answers to the following question you will choose either Non-Resilient Attachments or Resilient Attachments.
1. Bone Support Around the Abutments - If the bone support is good (0-20% bone loss), or if abutments can be made strong by splinting, non-resilient attachments are the connectors of choice. If the bone support is fair (20%-40% bone loss), the choice will most often be resilient attachments. If the bone loss is 40% or greater, more than likely the abutments need to be reduced to the height of the gingival tissue and the roots used to retain an overdenture.
2. The Condition of The Ridge - If the edentulous ridge has little loss of bone, either resilient or non-resilient attachments could be used. But, if the ridge is significantly resorbed, non-resilient attachments would most likely be indicated.
3. Is the opposing arch non-resilient (rigid) or resilient? Two resilient prostheses should generally not oppose each other, as two mobile occlusal planes will impair chewing efficiency.
Measuring for Partial Denture Attachments
| Height |
Height is the minimum requirement distance from the papilla to the opposing occlusal surface.
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| FC Width |
FC width is the minimum faciolingual space needed for the fixed attachment component.
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| Prep Depth |
Prep depth is the minimum depth of the tooth structure needed for preparation of the attachment space. |
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| RC Width |
RC width is the minimum faciolingual space required in the prosthesis for the removable attachment component. |
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The choice in partial denture attachments is between Non-resilient and Resilient. Non-resilient (rigid) attachments are highly stable connectors with very slight movement in function. Some may be used for segmenting fixed partial dentures to simplify future case conversion to a removable restoration. In distal extension partial denture cases, occlusal forces are directed relatively evenly to both the abutment teeth and the edentulous ridge. Therefore, rigid attachments are kinder to the edentulous ridge than are resilient attachments. When abutment teeth are stable, rigid attachments are often the connectors of choice.
Resilient attachments are stress directing attachments for Kennedy Class I and II cases which place occlusal load on both abutment teeth and the edentulous ridge. The ridge is more heavily loaded than when using rigid attachments, while the abutment teeth are more lightly loaded.
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