Adult 1 Alveolar Bone Loss 1 Bone loss 1 Case-Control Studies 1 Cigarette Smoking 1 Clinical 1 Cotinine 1 Dental Implants 1 Female 1 Humans 1 Male 1 Middle Aged 1 Non-Smokers 1 Peri-implantitis 1 Periodontal Index 1 Retrospective Studies 1 Saliva 1 Smokers 1 Smoking 1 Water Pipe Smoking 1 Waterpipe adult 1 alveolar bone loss 1 case control study 1 cigarette smoking 1 cotinine 1 diagnostic imaging 1 female 1 human 1 male 1