A 20-year analysis of implant treatment in an Australian public dental clinic

Abstract

Background

There is limited information regarding the profile and outcomes of implant treatment provided in the Australian public sector. This retrospective cohort study reviewed dental implant treatment completed at the Adelaide Dental Hospital over a 20 year period.

Methods

The database of implant treatment completed between 1996 and 2015 was analysed for patient, implant, prosthesis and operator specifics together with known implant status.

Results

Three hundred and twenty patients (mean age = 51.50 years) were treated with 527 implants. One hundred and eighty-four (57.50%) female patients received 296 (56.17%) implants and 136 (42.50%) males received 231 (43.84%) implants. Three hundred (56.93%) implants were restored with single crowns, 147 (27.89%) implants were restored with 63 mandibular implant overdentures, five (0.95%) implants were restored with two maxillary implant overdentures, and 67 (12.71%) implants were restored with 20 full arch fixed prostheses. The overall known implant survival rate was 87.67%. Mandibular implant overdentures had a risk of implant failure four times that of single implant-retained crowns (odds ratio = 4.0, 95% CI: 1.4, 11.4) that was statistically significant (comparison P-value = 0.0100).

Conclusion

Implant treatment completed in this public sector clinic using finite resources and a defined system of patient and restorative selection criteria demonstrated a high known implant survival rate. Utilising a structured and maintained patient recall protocol, it would be ideal to investigate further parameters of interest particularly those that could improve treatment delivery and longevity.

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