Early loading of titanium dental implants with an intra-operatively conditioned hydrophilic implant surface after 21 days of healing

Clin Oral Implants Res. 2016 Jul;27(7):875-83. doi: 10.1111/clr.12706. Epub 2015 Dec 23.


Objectives: The aim of the present observational medical device performance study was to test whether implants with an intra-operatively conditioned hydrophilic surface can be safely reconstructed when applying an early loading protocol after 21 days in partially edentulous posterior mandibles.

Material and methods: Partially edentulous patients with missing teeth in the posterior mandible were recruited. Immediately after implant placement, the implant position was indexed using a pickup impression technique. ISQ values were measured after 21 days of healing. When ISQ values were ≥70, the implants were directly restored with provisional reconstructions in occlusal contact allowing an early loading protocol. ISQ values were repeated again at 1, 3, and 6 months postloading. Clinical parameters (mPLI, mSBI, PPD, DIM, and CAL) were assessed. Standardized periapical radiographs were obtained after surgery, at implant loading and 3 and 6 months later. Changes over time were analyzed for statistical significance using the nonparametric method by Brunner & Langer (SAS Proc Mixed).

Results: Fifteen partially edentulous patients with healed sites in the posterior mandible received 20 implants. All implants healed uneventfully. At 21 days, all implants achieved an ISQ value of ≥70 (mean of 3 measurements) and were reconstructed at this time point with provisionals. ISQ values showed a gradual increase from baseline to 3 and 6 months postloading. The assessment of clinical parameters revealed stable tissue integration. The evaluation of the radiographs showed that 3 and 6 months after loading the median mesial and distal marginal bone levels had stabilized at the border between the rough surface and the 1-mm machined implant collar.

Conclusion: Functional occlusal loading of implants with a hydrophilic, moderately rough endosseal surface 3 weeks after placement appears to be a safe and predictable treatment option in healed sites in the posterior mandible without need of bone augmentation procedures.

Keywords: dental implants; early loading; hydrophilic implant surface; late implant placement.

Publication types

  • Observational Study

MeSH terms

  • Adult
  • Aged
  • Dental Implantation, Endosseous / methods
  • Dental Prosthesis, Implant-Supported
  • Female
  • Humans
  • Hydrophobic and Hydrophilic Interactions
  • Immediate Dental Implant Loading*
  • Jaw, Edentulous, Partially / surgery*
  • Male
  • Mandible / surgery
  • Middle Aged
  • Prospective Studies
  • Surface Properties
  • Titanium


  • Titanium