Dentition defect
Conditions
Interventions
AS group:Straumann AS Angled Screw Channel Abutment
ASC group:Nobel Procera ASC Angled Screw Channel Abutment
Conventional group:No angle conventional screw channel abutment
Sponsors
Stomatology Hospital, School of Stomatology, Zhejiang University
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1: Age >= 18 years at the time of surgery; 2: Single implant restorations in the upper anterior aesthetic region (13-23) greater than one year old; 3: Free of oral mucosal disease and oral infections; 4: One-piece crown restorations using AS/ASC abutments or restorations with conventional abutments; 5: Complete imaging of final restorations prior to wearing the teeth and at a functional load of more than 12 months.
Exclusion criteria
Exclusion criteria: 1: Heavy smokers (>10 cigarettes/day); 2: Uncontrolled periodontitis (whole mouth plaque score >20%, whole mouth bleeding score >25%, periodontal pocket depth >5mm); 3: Systemic diseases that can affect implant therapy or patients with associated medications, such as uncontrolled diabetes mellitus, current intake of bisphosphonates (for treatment of malignant tumours), pregnancy or plans for pregnancy, or history of head and neck History of radiotherapy; 4: Poor compliance and inability to co-operate with treatment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Marginal bone loss; | — |
Secondary
| Measure | Time frame |
|---|---|
| Biological indicators;Buccal bone thickness resorption;Pink/white aesthetic score (PES/WES);Patient satisfaction; | — |
Countries
China
Contacts
Public ContactWang Yu
Stomatology Hospital, School of Stomatology, Zhejiang University
Outcome results
None listed