PEEK Bar Versus Titanium Bar Fabricated by CAD-CAM in Mandibular Hybrid Prostheses: A Comparative Study

Fourteen patients with completely edentulous mandibular arch opposing natural dentition were selected and divided into two groups, seven patients in each. All patients received implant-supported hybrid prostheses with a bar fabricated by CAD/CAM milling technique. In group I (control), bar was fabricated from titanium, while in group ӀӀ, the bar was fabricated from PEEK. The evaluation of the study was done at 6 and 12 follow-up periods according to the following: 1- Experimentally by Geomagic (Geomagic, Japan) to detect any dimensional deviation of PEEK bars compared to titanium bars. 2-Clinically by questionnaire to evaluate the patient satisfaction. 3- Radiographically (digital periapical) to measure marginal bone loss around the implants.

Inclusion criteria

• Completely edentulous mandibular arch for at least six months have almost of the natural teeth in the maxillary arch with a ranged of age from 40- 60 years old.

and normal class Ӏ maxilla-mandibular relationship with a minimum 12-15 mm inter-arch space

Exclusion criteria

• All patient had systemic disorders that may influence soft or hard tissue healing were excluded as:

• History of radiation therapy in the head and neck region.
• Active infection or inflammation or flabby tissue in the mandibular arch
• Bone diseases as osteoporosis.
• Clenching or bruxism, temporomandibular joint troubles
• Neurological or psychiatric handicap conditions that could interfere with good oral hygiene.
• Heavy smoking and drug abusing