Evaluation of the Peri-Implant Bone Level around Platform-Switched Dental Implants: A Retrospective 3-Year Radiographic Study

Yu Hwa Pan, His Kuei Lin, Jerry C-Y Lin, Yung-Szu Hsu, Yi-Fan Wu, Eisner Salamanca and Wei-Jen Chang
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Yu Hwa Pan: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
His Kuei Lin: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
Jerry C-Y Lin: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
Yung-Szu Hsu: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
Yi-Fan Wu: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
Eisner Salamanca: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
Wei-Jen Chang: School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan

IJERPH, 2019, vol. 16, issue 14, 1-12

Abstract: Objective: To describe remodeling of the mesial and distal marginal bone level around platform-switched (PS) and platform-matched (PM) dental implants that were sandblasted with large grit and etched with acid over a three-year period. Materials and Methods: Digital periapical radiographs were obtained at the following time-points: during Stage I of the surgical placement of dental implants, before loading, immediately after loading (baseline), and one, three, six, 12, and 36 months after loading for measuring the horizontal and vertical marginal bone levels. Results: Sixty implants were successfully osseointegrated during the overall observation period. Vertical marginal bone levels for the PS and PM dental implants were 0.78 ± 0.77 and 0.98 ± 0.81 mm, respectively, whereas the horizontal marginal bone levels for the PS and PM implants were 0.84 ± 0.45 and 0.98 ± 0.68 mm, respectively. During the time leading up to the procedure until 36 months after the procedure, the average vertical marginal bone level resulted in less bone loss for the PS and PM groups—0.96 ± 1.28 and 0.30 ± 1.15 mm, respectively ( p < 0.05). The mean levels of the horizontal marginal bone also showed increases of 0.48 ± 1.01 mm in the PS and 0.37 ± 0.77 mm in the PM groups from the time before loading until 36 months after the procedure. However, these increases were not statistically significant ( p > 0.05). Conclusion: PS dental implants appeared to be more effective than PM implants for minimizing the mean marginal vertical and horizontal marginal bone loss during the three-year period. Regardless of which abutment connection was used, the dental implant in the present retrospective investigation exhibited minimal marginal bone remodeling, thus indicating long-term stability.

Keywords: peri-implant bone level; platform switching; dental implant (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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