Abstract
Aim : To evaluate the influence of implant location on initial retention of palateless complete overdentures retained by four O-rings at different inter-implant distances. Materials and Methods: Totally, 36 completely edentulous participants were equally assigned into two groups (G1 and G2). G1 participants have received four implants, two in the canine region with 32 mm inter-implant distance, and two in the second premolar region away from the anterior canine implants by 14 mm on both sides. G2 participants have received four implants, two in the canine region with 32 mm inter-implant distance, and two in first molar region away from anterior canine implants by 22 mm on both sides. Both groups have received palateless complete implant overdentures retained by four O-rings. Initial axial and para-axial retention of overdentures of both groups was estimated using digital forcemeter, and compared using an independent t-test. Results: Independent t-test revealed that location of dental implants has a significant role in the palateless complete overdenture retention with a level of significance set at P Conclusion: For palateless complete implant overdentures retained by four O-rings, increasing the inter-implant distance between anterior and posterior implants provides a more retentive prosthesis.
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