overdentures Flashcards
(18 cards)
what is an overdenture?
covers and rests on one or more remaining natural teeth and/or implant
how do overdentures provide more support?
tooth and mucosal support
composite fails if how much crown height remaining?
<1/3
how do overdentures preserve alveolar ridge form?
alveolar bone activated so doesn’t resorb
how do overdentures maintain proprioception? importance?
PDL remains
can sense food better and improve chewing efficiency
how can overdenture retention be improved? 2
tooth undercuts and precision attachments
overdentures avoid extractions, when might this be important?
pt at risk of MRONJ
radiotherapy pt
what are the psychological benefits of overdentures?
pt gets to maintain teeth
remember
overdentures ease the transition to edentulism
overdentures require good OH, when might this be challenging?
care homes
overdentures increase the risk of what 2 things?
caries
periodontitis
why are overdentures more likely to fracture?
thinner in area over teeth
how can overdentures effect future extractions?
make them potentially more challenging if caries makes it subalveolar
how can overdentures lead to extraction?
discomfort or trauma around the root
trauma of the undercut
name a precision attachment
zest anker
how does a zest anker precision attachment work?
RCT teeth
post hole in the roots and cement in female component
male component made of carbon fibre is cold cured on the denture
the male component of a zest anker precision attachment will wear out, how is it replaced easily?
remove
place new male attachment on the female attachment
place cold cure acrylic in the denture
seat the denture and remove once set and polish
what is the appropriate care of overdentures for pt?
good oral and denture hygiene
fluoride toothpaste application to roots
regular exam and radiograph to assess bone loss
