Dental Implant Surrounding Marginal Bone Level Evaluation: Platform Switching versus Platform Matching—One-Year Retrospective Study Article Swipe
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· 2017
· Open Access
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· DOI: https://doi.org/10.1155/2017/7191534
· OA: W2765409547
The benefits and feasibility of platform switching have been discussed in several studies, reporting lesser crestal bone loss in platform-switched implants than in platform-matched implants. Objective. The aim of the present study was to observe the changes in vertical and horizontal marginal bone levels in platform-switched and platform-matched dental implants. Materials and Methods. 51 patients received 60 dental implants in the present study over a 1-year period. Measurement was performed between the implant shoulder and the most apical and horizontal marginal defect by periapical radiographs to examine the changes of peri-implant alveolar bone before and 12 months after prosthodontic restoration delivery. Results . These marginal bone measurements showed a bone gain of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mn fontstyle="italic">0.23</mml:mn><mml:mo>±</mml:mo><mml:mn fontstyle="italic">0.58</mml:mn></mml:math> mm in the vertical gap and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mn fontstyle="italic">0.22</mml:mn><mml:mo>±</mml:mo><mml:mn fontstyle="italic">0.53</mml:mn></mml:math> mm in the horizontal gap of platform matching, while in platform switching a bone gain of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M3"><mml:mn fontstyle="italic">0.93</mml:mn><mml:mo>±</mml:mo><mml:mn fontstyle="italic">1</mml:mn></mml:math> mm (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M4"><mml:mi>P</mml:mi><mml:mo><</mml:mo><mml:mn fontstyle="italic">0.05</mml:mn></mml:math>) in the vertical gap and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M5"><mml:mn fontstyle="italic">0.50</mml:mn><mml:mo>±</mml:mo><mml:mn fontstyle="italic">0.56</mml:mn></mml:math> mm in the horizontal gap was found. The average vertical gap reduction from the baseline until 12 months was <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M6"><mml:mn fontstyle="italic">0.92</mml:mn><mml:mo>±</mml:mo><mml:mn fontstyle="italic">1.11</mml:mn></mml:math> mm in platform switching and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M7"><mml:mn fontstyle="italic">0.29</mml:mn><mml:mo>±</mml:mo><mml:mn fontstyle="italic">0.85</mml:mn></mml:math> mm in platform matching (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M8"><mml:mi>P</mml:mi><mml:mo><</mml:mo><mml:mn fontstyle="italic">0.05</mml:mn></mml:math>). Conclusions. Within the limitations of the present study, platform switching seemed to be more effective for a better peri-implant alveolar bone vertical and horizontal gap reduction at 1 year.
