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Updated: Feb 3, 2026
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Interproximal Open Contacts Between Implant Restorations and Adjacent Teeth. Prevalence - Causes - Possible Solutions
Spyridon Varthis1, Dennis P Tarnow2, Anthony Randi1
1Department of Prosthodontics, Columbia University College of Dental Medicine, New York, NY.
Summary
Interproximal contact loss (ICL) between implants and teeth is a common issue, occurring frequently on the mesial side. Prevention strategies include regular evaluations and protective appliances.
Area of Science:
- Dental Implantology
- Prosthodontics
- Periodontology
Background:
- Interproximal contact loss (ICL) is a recognized complication in implant dentistry.
- Understanding ICL's prevalence and causes is crucial for long-term implant success.
Purpose of the Study:
- To determine the prevalence and contributing factors of ICL between implant restorations and adjacent teeth.
- To offer recommendations for preventing and treating ICL.
Main Methods:
- A comprehensive literature search was conducted using PubMed.
- Keywords included ICL, implant prostheses, interproximal contacts, and tooth migration.
Main Results:
- A high prevalence of ICL was reported, ranging from 18-66% in the maxilla and 37-54% in the mandible.
- ICL occurs more frequently on the mesial aspect and can manifest as early as 3 months post-treatment.
- Identified causes include tooth migration, crown-related issues, and bone formation/growth.
Conclusions:
- ICL is a common, multifactorial complication requiring tailored treatment.
- Regular monitoring of interproximal contacts and considering screw-retained restorations are recommended.
- Preventive measures like orthodontic retainers or occlusal guards may be beneficial.
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