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. 2021 Jun 5;13(Suppl 1):S484–S491. doi: 10.4103/jpbs.JPBS_818_20

Table 2.

Measured parameters of mandibular 1st molar (1 M) sites

Parameters measured Acronyms
Peri-implant gap defect measurements
 Distance from buccal surface of implant to buccal cortical socket bone (buccal peri-implant gap defect at crest) BGDh
 Distance from lingual surface of implant to lingual cortical socket bone (lingual peri-implant gap defect at crest) LGDh
 Distance from mesial surface of implant to interdental socket bone mesially at crest (mesial peri-implant gap defect at crest) MGDh
 Distance from distal surface of implant to interdental socket bone distally at crest (distal peri-implant gap defect at crest) DGDh
 Distance between the crest/shoulder of the implant to the interradicular bone (vertical peri-implant gap defect length) L1
Peri-implant interradicular bone support measurements
 Length from the top/shoulder of implant to the point where buccal interradicular bone support starts (buccal interradicular bone support [percentile]) IRBb (%)
 Length from the top/shoulder of implant to the point where Lingual interradicular bone support starts (lingual interradicular bone support [percentile]) IRBl (%)
 Length from the top/shoulder of implant to the point where mesial interradicular bone support starts (mesial interradicular bone support [percentile]) IRBm (%)
 Length from the top/shoulder of implant to the point where distal interradicular bone support starts (distal interradicular bone support [percentile]) IRBd (%)
Apical bone support measurements
 Distance from the tip of the implant to the tangent from apex of tooth AP-TIP