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The implementation of implant placement protocols and their short-term impact on marginal bone levels in the esthetic
Mahpareh Marefat1, Duong Tran2, Irina Dragan1
1Department of Periodontology, Tufts University School of Dental Medicine, Boston, MA, USA.
Journal of Periodontal & Implant Science
|June 8, 2026
Summary
This study found no significant differences in short-term marginal bone levels or implant failure among International Team for Implantology (ITI) protocols. However, implant length and brand may influence marginal bone loss in dental implants.
Area of Science:
- Dentistry
- Oral Implantology
- Periodontology
Background:
- Dental implant placement and loading protocols influence treatment outcomes.
- Standardized protocols, such as those defined by the International Team for Implantology (ITI), aim to optimize success rates.
- Understanding the prevalence and impact of these protocols is crucial for clinical decision-making.
Purpose of the Study:
- To determine the prevalence of ITI-defined implant placement and loading protocols in the maxillary anterior region.
- To evaluate the short-term effects of different ITI protocols on peri-implant marginal bone levels.
- To assess the impact of ITI protocols on implant failure rates after prosthetic loading.
Main Methods:
- A retrospective review of 468 implants placed at Tufts University School of Dental Medicine (2014-2018).
- Implants categorized by placement timing (immediate, 4-8 weeks, 12-16 weeks, 6 months post-extraction) and loading time (within 1 week, 1 week-2 months, >2 months).
- Marginal bone levels measured via periapical radiographs at baseline and 12-month follow-up using the AxiUm ruler tool.
Main Results:
- Most implants (53.2%) were placed >6 months post-extraction and loaded >2 months after placement.
- No significant differences in short-term marginal bone levels or implant failure were found across ITI protocol groups.
- Increased implant length correlated with greater mesial (0.061 mm) and distal (0.066 mm) bone loss; Nobel implants showed more bone loss than Straumann implants.
Conclusions:
- While ITI protocols did not significantly impact short-term outcomes, implant length and brand may influence marginal bone loss.
- Further long-term studies are necessary to confirm these findings and explore other factors affecting implant success.
- Clinical considerations regarding implant length and brand selection may be warranted to minimize marginal bone loss.
