Oral Surgery and Implantology Department, Faculty of Dentistry, University of Barcelona, Barcelona, Spain.
IDIBELL Institute, Barcelona, Spain.
J Clin Periodontol. 2021 Apr;48(4):581-589. doi: 10.1111/jcpe.13436. Epub 2021 Feb 15.
To evaluate differences in probing depth (PPD) with and without a prosthesis in implants without interproximal bone loss (IBL). Secondarily, to assess whether the difference in PPD measured with and without the crown was affected by diagnosis or implant location.
A cross-sectional study was conducted in patients with a single screw-retained implant-supported crown in the posterior area, without IBL. PPD and was assessed before and after crown removal. A subgroup analysis compared healthy vs. mucositis implants and premolar vs. molar locations.
In the 62 implants analysed (23 healthy and 39 with mucositis), the PPD was 1.15 mm (SD = 1.24 mm) deeper without the prosthesis than with it (p < .001). This difference was independent of the implant location (p > .05) except for buccal sites (p = .048). The mean PPD difference for implants with mucositis was 0.95 mm (SD = 1.19 mm; p < .001) while healthy implants had a mean PPD variation of 1.47 mm (SD = 1.29 mm; p < .001).
The presence of prosthesis in single-tooth implants in the posterior area without IBL seems to lead to an underestimation of PPD that appears to be significant in implants diagnosed with mucositis, although the difference is even greater in healthy implants. Further studies are needed to confirm these findings.
评估无邻间骨丧失（IBL）的种植体在有/无修复体时的探诊深度（PPD）差异。其次，评估测量时是否存在与诊断或种植体位置相关的冠部对 PPD 测量值的影响。
本横断面研究纳入了后牙区单个螺钉固位式种植体支持的单冠修复患者，且无 IBL。评估了在去除冠之前和之后的 PPD。亚组分析比较了健康种植体与黏膜炎种植体以及前磨牙与磨牙部位。
在分析的 62 个种植体中（23 个健康种植体和 39 个黏膜炎种植体），无修复体时的 PPD 比有修复体时深 1.15 毫米（SD=1.24 毫米）（p<0.001）。除了颊侧部位（p=0.048）外，这种差异与种植体位置无关（p>0.05）。黏膜炎种植体的平均 PPD 差值为 0.95 毫米（SD=1.19 毫米；p<0.001），而健康种植体的平均 PPD 差值为 1.47 毫米（SD=1.29 毫米；p<0.001）。
在后牙区无 IBL 的单牙种植体中，修复体的存在似乎会导致 PPD 的低估，在黏膜炎诊断的种植体中，这种低估似乎更为显著，尽管在健康种植体中差异更大。需要进一步的研究来证实这些发现。
