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Objective <p>The aim of this study was to retrospectively evaluate the complications associated with implant-supported overdentures (IODs) by comparing splinted and unsplinted attachment systems with varying numbers of implants in the maxilla and mandible.</p> Results <p>A statistically significant difference in complication rates was found between splinted and unsplinted systems (<i>p</i> &lt; 0.05), with unsplinted systems demonstrating higher rates. The number of implants did not significantly affect the incidence of complications (<i>p</i> &gt; 0.05). During the first two years, deformation of the retentive part was the most common complication in all the groups. From the third year to the fifth year, four-implant systems more frequently exhibited retention loss and attachment wear, whereas two- and three-implant systems continued to show deformation of the retentive part.</p>

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Prosthetic complications of implant-supported overdentures: a retrospective study on the influence of attachment type and implant number

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月23日

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  • Ezgi Erdenol,
  • Ecem Sancar,
  • Ozge Celik,
  • Selim Erkut

摘要

Objective

The aim of this study was to retrospectively evaluate the complications associated with implant-supported overdentures (IODs) by comparing splinted and unsplinted attachment systems with varying numbers of implants in the maxilla and mandible.

Results

A statistically significant difference in complication rates was found between splinted and unsplinted systems (p < 0.05), with unsplinted systems demonstrating higher rates. The number of implants did not significantly affect the incidence of complications (p > 0.05). During the first two years, deformation of the retentive part was the most common complication in all the groups. From the third year to the fifth year, four-implant systems more frequently exhibited retention loss and attachment wear, whereas two- and three-implant systems continued to show deformation of the retentive part.