الفهرس 
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Abstract
Aim: To compare Poly Ether Ether Ketone (PEEK) removable partial denture (RPD) to metallic RPD
in treating mandibular Kennedy class I in terms of Oral health related quality of life. Both frameworks
were CAD designed and printed into resin pattern. The point of debate discussed was whether to use
PEEK or metallic RPD.
Materials and methods: This randomized, controlled, parallel-grouped clinical trial included 30
patients. Patients were partially edentulous with mandibular bilateral free end saddles intended to
receive a computer aided designed (CAD) RPD. They were randomly divided into 2 groups; a one to
receive a CAD PEEK RPD as the interventional group, and the other to receive a CAD metallic RPD
as the control group. Oral health related quality of life (OHRQoL) was evaluated by oral health impact
profile questionnaire (OHIP-14) as a primary outcome at RPD insertion as a baseline, 1 month and 3
months after insertion. As a secondary outcome, abutment teeth mobility was evaluated by periotest
as well as the periodontal health of the abutments in form of probing depth, gingival index and
bleeding on probing.
Results: OHRQoL improved in both groups significantly. However, there was neither statistical nor
clinical significant difference between metallic and PEEK RPD. Regarding abutment teeth mobility, probing depth, gingival index and bleeding on probing, there was no statistical significant difference
neither between both groups nor across different time intervals.
Conclusion: Within the limitation of our study, it can be concluded that computer aided
designed PEEK and metallic RPD are clinically acceptable treatment options for Kennedy class I
edentulous mandible. Both improved OHRQoL significantly, while abutment teeth mobility,
probing depth and gingival health were not affected.