Overdenture

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Overdenture

• a complete or partial removable denture
  supported by retained roots that is intended to
  provide improved support, stability, and tactile
  and proprioceptive sensation and to reduce ridge
  resorption. (Mosby. Mosby's Dental Dictionary.
  Elsevier, 2004.).

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Advantages

• Preserve alveolar ridge
• Possibly -support -proprioreception -retention
  (eventually) -stress distribution

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Disadvantages

• Poor oral hygiene
• -caries and periodontal disease
• Soft tissue undercuts -esthetics -retention
• Breakage of denture -thin -stress concentration
  over abutments

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Selection of abutment teeth

• One per quadrant
• Not adjacent teeth
• Usually mandibular cuspids and premolars
• Maxillary cuspids frequently cause esthetic and
  retention problems due to soft tissue undercuts

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Overdentures

• Regard as transitional
• - need perfect oral hygiene -daily non
  acidulated topical fluoride (sodium fluoride)
• Probably better to place 2 implants