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Dimension of interproximal soft tissue between adjacent implants in two distinctive implant systems
Dong-Won Lee1, Kwang-Ho Park, Ik-Sang Moon
1Department of Periodontology, Yongdong Severance Hospital, College of Dentistry, Yonsei University, Seoul, Korea.
Background:
The purpose of this study was to compare the dimension of interproximal soft tissue between adjacent implants in distinctive implant systems.
Methods:
This study involved 85 interproximal papillae between two adjacent implants in 50 patients who had implants placed adjacent to each other and who had prosthesis in place for longer than 1 year. The shortest distance between the radiopaque material on the tip of interimplant papilla and the most coronal portion of the interimplant crestal bone was measured (radiographic length of papilla [RL]). The horizontal distance (HD) between the two adjacent implants was measured at the fixture-abutment interface level. Considering the possible effect of interimplant crestal bone resorption on closely implanted sites, HDs were divided into two categories: HD <3 and >or=3 mm. The Mann-Whitney test was performed to find the difference in the dimension of interimplant papilla.
Results:
In cases of HD <3 mm, RL did not differ statistically in both systems. Also, in cases of HD >3 mm, RL did not show a statistically significant difference in both systems.
Conclusion:
Both systems had similar dimensions of interproximal soft tissue between adjacent implants, irrespective of the horizontal distance of the fixture.