口腔疾病防治 (Sep 2022)

Analysis of factors related to early failure of 1 001 implants with 3.3 mm narrow-diameter

  • GUO Li,
  • WU Guofeng,
  • SHI Anyuan,
  • GU Chunning,
  • JIANG Xiaowei,
  • QIN Haiyan

DOI
https://doi.org/10.12016/j.issn.2096-1456.2022.09.005
Journal volume & issue
Vol. 30, no. 9
pp. 644 – 650

Abstract

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Objective To explore the early failure of narrow-diameter implants (NDIs) and to provide a reference for clinical implant restoration. Methods From April 2017 to April 2020, data from a total of 725 patients (with 1 001 NDIs) who accepted implant restoration due to dentition defects were collected from the department of dental implantology in a stomatological hospital; 353 males and 372 females were included. The early failure rate of 1 001 NDIs was retrospectively analyzed. Univariate generalized estimated equation (GEE) and multivariate GEE were used to explore risk factors, including age, sex, implant location, materials, surface modification, length, bone augmentation and healing procedure, associated with early failure of NDIs. Results There were 34 cases of early failure among 725 patients, including 38 NDIs. The early failure rate of NDIs was 4.69% at the patient level and 3.80% at the implant level. There was no significant difference in the early failure rate of NDIs among different age groups, sexes, implant materials, surface modifications, lengths, and healing procedures (P>0.05). Univariate analysis showed that there was a significant difference between the early failure rate of NDIs in the anterior maxilla group (2.16%) and the anterior mandible group (8.64%) at the implant level (P0.05). In addition, in the anterior region, the early failure rate of NDIs in the group with simultaneous bone augmentation was significantly lower than that of the group without bone augmentation (P<0.05). However, multivariate GEE analysis showed that the early failure rate of NDIs was only significantly positively correlated with implants in the mandibular anterior region (P<0.01). Conclusion The overall early survival rate of Straumann 3.3 mm NDIs is greater than 95%. The early failure of NDIs in the anterior mandible region is much higher than that in the anterior maxilla region and posterior region.

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