Evaluating the influence of different soft liners Retaining mini implant supported mandibular over denture on the marginal bone height

Abstract

Introduction: Using a soft liner-retained implant-supported overdenture offers the restorative dentist a treatment option when the number, location, or angulation of dental implants placed may differ from the original treatment plan. The aim of the present study was to evaluate the marginal bone height changes in mini-implant supported overdentures using different retaining denture softliners. Patients & Methods: Twenty-one completely edentulous cases were selected for this study. The patients were allocated into one of the three treatments groups. In group I the lower overdenture was relined with "acrylic based soft liner"; group II the lower overdenture was relined with "silicon based soft liner'', while in group III: the lower overdenture was relined with ''Retention Sil 200''. Patients in all groups received CBCT immediately after the implant loading, 6 months and 12months after insertion of partial overdenture. Each implant was evaluated for the marginal bone level. Results: The Silicon, Retention Sil 200 and acrylic based soft liners showed a statistical significant difference in the amount of bone resorption. Conclusion: the current study concluded that Silicon and acrylic based soft liners show significant difference in their effect on the supporting bone due to stresses transmitted to miniimplant retained mandibular over dentures. Retention. Sil resilient liners cannot be considered as a permanent mean of retention for mini implant retained mandibular but it shows high success for short-and medium-term management.

Comparing the retention of the ball attachment retained mini-implant mandibular over denture using different retentive mechanisms. A Randomized Clinical Trial

“…(23,24) Since PEEK provide advanced mechanical properties when compared to Nylon, this study aimed to replace the Nylon cap of the ball attachments in mini-implant retained over denture by the PEEK and retention sil and detect the loss of retention over time in order to improve the long life of the retention when exposed to repetitive cycles of insertion and removal. (25) METHODOLOGY A total of Fifteen completely edentulous male patients were recruited for this study from the department outpatient clinic, Cairo university, with an age ranged around 50-60 years. The inclusion criteria were as follows; All patients with completely edentulous mandibles opposed by maxillary full set natural dentition with normal skeletal maxillary -mandibular relationship (Angle class I), Patients should be free from any medical conditions that might affect the implant insertion and/or osseointegration.…”