Association of Implant Position and Crown Contour With Esthetics and Tissue Health in Anterior Single Tooth Replacement: a Prospective Study
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 122
- 试验地点
- 1
- 主要终点
- Changes in bleeding on probing
研究概览
简要总结
Emergence profile and crown contour of implant supported rehabilitation, which is influenced by implant position, is associated with peri-implant health and esthetic outcomes. However, there is no study prospectively explore the association between implant position, emergence profile/crown contour, and dental implant outcomes. Thus, the present study aims to (1) assess the multivariate association between local factors and peri-implant soft-tissue health, inflammation, and microbiome; and (2) to identify patterns/clusters of implant characteristics significantly associated with health or inflammation.
详细描述
This will be a prospective study aimed at associating the development of peri-implant mucosal inflammation (mucositis) and deeper inflammation (peri-implantitis with marginal bone loss) with features associated with implant position (three-dimensional position of the implant platform) and the consequent shape of the crown contour and emergence profile. The hypothesis is that implant position determines the shape of the crown, which in turn determines the persistence of a local microbial biofilm as unfavourable crown contours hamper oral hygiene efforts aimed at biofilm control/removal. The persistence of a biofilm will cause soft tissue inflammation, which may lead to microbial dysbiosis and disease.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients with a single implant-supported restoration in anterior jaws (premolars to premolars), with adjacent natural teeth, with pre-surgery CBCT and intra-oral scans, and willing to comply with research appointments/schedule.
排除标准
- •Pregnancy or intention to become pregnant at any point during the study duration;
- •With any systematic diseases/conditions that are contradictions to dental implant treatment;
- •Inability or unwillingness of individual to give written informed consent.
- •Inability of follow-up according to the protocol.
结局指标
主要结局
Changes in bleeding on probing
时间窗: Changes over six months, 1, 2, and 3 years after final crown insertion.
Peri-implant probing will be performed with light (∼25 g) force using UNC-15 periodontal probe, at six sites (mesio- buccal, buccal, disto-buccal, mesio-lingual, lingual, disto-lingual) per implant. At each site, presence of bleeding will be recorded.
次要结局
- Changes in cytokine level in peri-implant crevicular fluid(Changes over six months, 1, 2, and 3 years after final crown insertion.)
- Changes in composition of microbiome in sub-gingival plaque sample(Changes over six months, 1, 2, and 3 years after final crown insertion.)
- Marginal bone level change(Chenges over Six months, 1, 2, and 3 years after final crown insertion.)
- Buccal soft tissue level change(Changes over six months, 1, 2, and 3 years after final crown insertion.)
- Papilla height change(Changes over six months, 1, 2, and 3 years after final crown insertion.)
研究者
Maurizio Tonetti
Chief professor
Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University