One-Year Multicenter Randomised Controlled Trial Comparing OT Equator® and Locator Attachments to Retain an Early Loaded Implant Overdenture on Two Implants

Marco Tallarico; Luca Fiorillo; Marco Montanari; Roberto Scrascia; Corina Marilena Cristache; Emiliano Ferrari; Alessio Casucci; Erta Xhanari; Saturnino Marco Lupi; Irene Ieria; Edoardo Baldoni; Ruggero Rodriguez Y Baena; Gabriele Cervino

doi:10.1155/2023/2745262

One-Year Multicenter Randomised Controlled Trial Comparing OT Equator® and Locator Attachments to Retain an Early Loaded Implant Overdenture on Two Implants

Int J Biomater. 2023 Jul 7:2023:2745262. doi: 10.1155/2023/2745262. eCollection 2023.

Authors

Affiliations

¹ School of Dentistry, Sassari 07100, Italy.
² School of Dentistry, Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
³ School of Dentistry, Aldent University, Tirana 1001, Albania.
⁴ Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania "Luigi Vanvitelli", Naples 80121, Italy.
⁵ Department of Prosthodontics, Dr D. Y. Patil Dental College and Hospital, Dr D. Y. Patil Vidyapeeth, Pimpri, Pune 411018, India.
⁶ Private Practice, Cesena 41121, Italy.
⁷ Independent Researcher, Taranto 74121, Italy.
⁸ Faculty of Midwifery and Medical Assisting, "Carol Davila" University of Medicine and Pharmacy, Bucharest 020021, Romania.
⁹ Independent Researcher, Bologna 40123, Italy.
¹⁰ Independent Researcher, Montepulciano Stazione 53045, Italy.
¹¹ Dental Clinic, University of Pavia, Pavia 27100, Italy.
¹² Independent Researcher, Rome 00151, Italy.

Abstract

This investigation aimed to compare the effectiveness of the OT Equator® (Rhein, Bologna, Italy) and the Locator attachment systems used to retain early loaded implant-retained overdentures. This study was designed as a multicenter randomised controlled trial of parallel groups. After implant placement, the patients were randomised to receive OT Equator® attachments in the test group or Locator attachments in the control group. The outcome measures were implant and prosthetic success and survival rates, any biological and technical complication, marginal bone loss, patients' satisfaction, and periodontal parameters. Overall, 42 patients were consecutively enrolled and treated. One implant was lost in the control group, while no implants were lost in the test group. No prostheses failed in both groups. Only a few complications were experienced in both groups. The main was represented by loss of retention of the attachments (retentive caps). The OT Equator® attachment showed statistically lower periodontal parameters. In conclusion, both attachment systems were suitable for overdenture implant retention.