Postoperative Complications in Smoking Patients Treated With Implants: A Retrospective Study

PurposeTo identify the risk of complications (eg, implant loss, infection, peri-implantitis, and mucositis) in a group of patients treated with osseointegrated implants and to assess the effect of smoking on this risk.Materials and MethodsA retrospective cohort study of patients treated in the Unit of Implantology, University of Barcelona Faculty of Dentistry was performed. All patients had already undergone prosthetic treatment, and the minimal follow-up time after implant surgery was 6 months.ResultsA total of 295 patients fulfilled the inclusion criteria; 56.9% were women and 43.1% were men. They received a total of 1,033 implants. There were 209 complications (32 cases of implant loss, 2 cases of infection, 70 cases of peri-implantitis, and 105 cases of mucositis). The smoking habit was associated with an increased risk of complications (P = .008).ConclusionSmokers had an increased risk of complications, including infection, implant loss, mucositis, and peri-implantitis, compared with nonsmoking patients.