Influence of biologic and host factors on marginal peri-implant bone remodeling: A retrospective radiographic evaluation

ZZM0 个研究点目标入组 131 人开始时间: 2024年2月20日最近更新: 2024年8月19日

适应症

试验速览

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•The patient received a dental implant between 2006 and 2020.
•- Straumann implants were used in the posterior area (premolars and molars, maxilla or mandible) with screw-retained single-tooth crowns or bridges in healed sites.
•- BL implants were placed exactly at bone level, while TL implants had the polished part positioned outside the bone.
•- The patient was treated without bone augmentation or soft-tissue augmentation.
•- X-rays were taken before surgery and at least 12 months after prosthetic rehabilitation.
•- Age = 18 years
•- Signed informed consent or exception permit (in relation to HRA Art. 34) by the ethics committee ZH

•- Immediate implant placement
•- Cemented restorations
•- Radiotherapy in the head and neck area in the past
•- Systemic or localised diseases or conditions that may impair healing or osseointegration (e.g. diabetes, osteoporosis, ...)
•- use of drugs that impact bone metabolism
•- Severe bruxism
•- Clear signs of implant malposition or prosthetic misfit
•- Implants with extending cantilevers
•- Mucosal height that cannot be measured
•- Implants that have undergone one- or two-stage bone augmentation
•- Mucogingival surgery with the aim of increasing the width of the attached mucosa
•- Mucogingival surgery to thicken the mucosa
•- Implants without regular individual patient-orientated supportive periodontal care
•- Presence of a documented refusal or revocation of consent

发起方

ZZM