Patient reported outcomes and prosthetic maintenance in single-implant-retained mandibular overdentures
Objectives: Patient reported outcomes and prosthetic maintenance have become an important determinant for the success of any prosthetic treatment.
Aim\Hypothesis: To evaluate the correlation between prosthetic maintenance and patient reported outcomes of single-implant-retained mandibular overdentures when using two different types of attachments.
Methods: Eighty edentulous patients received a single implant in the midline of the mandible to improve the retention of their mandibular dentures. Three months later, all patients were randomized according to the attachment type (ball attachment with nylon matrix and CM LOC attachment with polyetherketoneketone matrix). Patients were recalled every 3 months for a 12-month follow-up period. The validated patient satisfaction questionnaire consisted of 5 domains. While the OHIP-Edent used 7 domains. The prosthetic maintenance recorded during the 12-month follow-up included: Matrix replacement, relining of maxillary and mandibular denture, fracture of maxillary and mandibular denture.
Results: Sixty-five patients could be included in the one-year follow-up. The correlation between the various variables was done using Spearman Rho (rho) correlation equation. For the ball attachment group, a moderate positive significant correlation between prosthetic maintenance and some domains of patient satisfaction and OHIP-Edent was found at 6, 9 and 12 month follow up. Relining of the maxillary denture had shown such correlation at 6 and 12 month follow up, while the replacement of the nylon matrix was significant at 9 month follow up with all domains. For the CM LOC group the replacement of the PEKK matrix at 6-month follow-up had a moderate positive significant correlation some of the domains of the OHIP-Edent only.
Conclusions: The replacement of the matrix s and relining of the maxillary denture seem to be important prosthetic incidences that had adversely affected the patient satisfaction and the OHIP-Edent for single implant retained overdentures.