Retention of CAD Metallic and Poly Ether Ether Ketone (PEEK) Frameworks

Retention of CAD Metallic and Poly Ether Ether Ketone (PEEK) Frameworks in Mandibular Kennedy Class I Cases: a Randomized Clinical Trial

comparing retention of CAD CAM metallic and Poly Ether Ether Ketone (PEEK) partial dentures in Kennedy class I casses

partially edentulous patients with Kennedy class I classification will be recruited for the trial and then randomly distributed on two groups; experimental group will receive CAD CAM PEEK partial denture and control group will receive CAD CAM metallic partial denture. then primary impressions will be made and then mouth preparation followed by secondary impression then scanning of the master cast using extra-oral scanner then designing the partial denture using blender for dental then the frame work will be printed.

then frame work will be processed into either PEEK or Metal according to randomization.

retention will be measured at zero and 3 months.

Inclusion Criteria:

- Patients with bilateral free end saddles in the mandible (kennedy class I) with last standing abutment premolar.

2- Opposing dentition is fully intact or restored. 3- Sufficient inter-arch space. 4- Angle's class I maxilla-mandibular relationship.

Exclusion Criteria:

1. Periodontal affection of the abutment teeth.
2. Skeletal mal-relation.
3. Unmotivated patients to maintain adequate oral hygiene to follow up.
4. Patients with neuromuscular and Psychiatric disorders.
5. Systematic disease affecting bone and periodontal health.
6. Insufficient inter-arch space.
7. Patients with physical reasons that could affect follow up.