Skip to content

Restoration of teeth lacking complete ferrules using cast precious metal alloy post-and-cores and knife-edged crowns: A retrospective clinical study

Clinical efficacy of casting precious metal post-and-cores and full crown restoration for severe defects and residual roots

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2400086106
Enrollment
Unknown
Registered
2024-06-25
Start date
2024-07-01
Completion date
Unknown
Last updated
2024-07-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

significant coronal tooth defects

Interventions

Case series:none

Sponsors

Hospital of Stomatology, Zhejiang Chinese Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: 1) Abutment tooth with 2 or fewer ferrule (defined as the axial wall above the gums with a height of = 1.5mm and a thickness of = 1mm); (2) Complete complete root canal treatment for more than 1 week, with no clinical symptoms of pulpitis or periapical periodontitis, and no periapical disease detected on imaging; (3) Before restoration, the degree of looseness of the affected tooth should not exceed II degrees, the absorption of alveolar bone should be less than one-third of the root length, and the affected tooth should not have root cracks or apical cysts; (4) No progressive gingivitis or periodontitis before repair; (5) Repair using cast precious metal post cores and full crowns; (6) There is an occlusal relationship with the opposing teeth; (7) Good oral hygiene condition; (8) Good oral and maxillofacial function, without side functional movements such as tight biting and night grinding; (9) Good overall condition with no recorded major systemic diseases

Exclusion criteria

Exclusion criteria: (1) Dental defects exceeding 1mm below the gingiva; (2) Disrupted occlusion and obvious malocclusion; (3) More than 20 missing teeth in the mouth; (4) Suffering from severe systemic diseases.

Design outcomes

Primary

MeasureTime frame
The success rate of restoration;Survival rate of restorations;

Secondary

MeasureTime frame
bleeding on probing, probing depth;plaque index, tartar index;

Countries

China

Contacts

Public ContactYuanna Zheng

Hospital of Stomatology, Zhejiang Chinese Medical University

zyn218@126.com+86 139 6814 9843

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026