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Partial Denture

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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.

How to Select a Partial Denture Attachment:

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.
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