A comparison of the effect on oral health quality life by two attachment designs
used with implant supported removable overdentures

Gamal G. Burawi, Mohammed H. Elgtlawi, Omar O. Elaogali, Mahfud F. Mohamed


Aim: The purpose of this study was to investigate the impact on oral health related quality of life by ball and magnet attachments within implant supported mandibular overdentures (ISMOD) using patient-centred outcome measures (OHIP-20). Our a priori hypothesis was that there is no difference in patient oral health related quality of life between the two attachment types.

Materials and Methods: The study was designed as a within-subject crossover randomized clinical trial with initially twenty-two edentulous patients lately using complete dentures were recruited. Sixteen patients completed the study; nine female patients with a mean age 62 years and a mean of 22 edentate years; seven male patients with a mean age 67.8 years and a mean of 20 edentate years completed both arms of the crossover study. Each patient completed an OHIP-20 questionnaire at baseline before had two implants placed in the intraforaminal region of the mandible then randomly selected to receive a implant supported mandibular overdenture retained by either magnetic or ball attachment. After three months of using the overdenture, patients repeated the OHIP-20 questionnaires before having their
attachments replaced by the other design. After a further 3 months of using the second attachment, patients completed the final questionnaires. The outcome variables of OHIP scores were compared between baseline and the two attachment types using paired t-tests.

Results: The impact of denture wearing on patients oral health related quality of life decreased significantly between baseline and both prostheses designs for all domains of the OHIP -20 and total OHIP-20 (p < 0.05).

Conclusion: The significant reduction in impact of denture wearing on patients oral health related quality of life with ball attachments is greater than that for magnetic attachments however both designs provide significantly improved oral health related quality of life than conventional dentures.

Keywords: Implants, overdenture, ball attachments, magnets