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Dependencies for maxilla samples: (a) dependence of the Corticalization Index on tobacco smoking 5 years after implant insertion—there was no statistical difference; (b) frequency of implant loss depending on the smoker or non-smoker group—the higher frequency was in the smoker group; (c) dependence of implant loss on marginal bone loss a 5 years after functional loading—the higher the marginal bone loss, the higher the probability of implant loss.
