The Effect of Clip Material on the Retention of Implant Supported Mandibular Overdenture

The Effect of Clip Material on the Retention of Implant Supported Mandibular Overdenture: Clinical Comparative Study

This study is aiming to evaluate the retention of implant supported mandibular overdenture using two different clip materials namely polyoxymethylene (POM) and poly-ether-ether-ketone (PEEK) on PEEK bar at three-time intervals; immediately after placement, after 3 months and after 6 months.

Inclusion Criteria:

• Inclusion criteria:

  • Male.
  • Completely edentulous.
  • Age: 50-60 years.
  • Free from any systemic diseases that affect bone metabolism.
  • Good intraoral condition.
  • Anterior mandibular bone height > 13mm and width > 5mm.
  • The inter-arch space from 15mm to 17mm.

Exclusion criteria:

• Smoking and drug abusing.
• Severe maxillomandibular skeletal discrepancy.
• Bone metabolic disorders.
• History of head and neck radiotherapy.
• Intravenous bisphosphonate therapy.
• Presence of para-functional habits.
• Temporomandibular joint disorders.
• Severe bony undercuts.