Influence of marginal configuration and porcelain addition on the fit of In-Ceram crowns

The fit of In-Ceram copings and crowns was investigated in a laboratory study. Two methods were used, one a direct sectioning technique and the other a cement analogue technique using additioncured polyvinylsiloxane impression material. The former method involved 40 crowns cemented and sectioned on...

Full description

Saved in:
Bibliographic Details
Published inBiomaterials Vol. 17; no. 19; pp. 1891 - 1895
Main Authors Shearer, Brian, Gough, Martin B., Setchell, Derrick J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.10.1996
Elsevier Science
Subjects
Analysis of Variance
Biological and medical sciences
Ceramics
chamfer margins
Dental Cements - standards
Dental materials
Dental Porcelain - chemistry
Dental Porcelain - standards
Gold - metabolism
Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics
In-Ceram crowns
Maxillofacial surgery. Dental surgery. Orthodontics
Medical sciences
porcelain
shoulder margins
Siloxanes - chemistry
Siloxanes - metabolism
Siloxanes - standards
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Tooth Crown
Dental materials
In-Ceram crowns
porcelain
chamfer margins
shoulder margins
Performance evaluation
Porcelain
Dental cement
Biomaterial
Chemical composition
Dental crown
Dental restauration
Technique
Ceramic materials
Comparative study
Online AccessGet full text

Cover

More Information
Summary:The fit of In-Ceram copings and crowns was investigated in a laboratory study. Two methods were used, one a direct sectioning technique and the other a cement analogue technique using additioncured polyvinylsiloxane impression material. The former method involved 40 crowns cemented and sectioned on their respective electroformed silver dies. For the second method, 80 analogues were embedded and sectioned. All measurements were made using a Reflex microscope. This showed In-Ceram crowns and copings to fit well with marginal openings and ranging from 1 to 63 μm and a mean of 19 μm. No significant difference in fit was found between chamfer margins and shoulder margins. The addition of porcelain to the In-Ceram coping and repeated firing cycles involved in building a crown did not alter the fit. It is concluded that In-Ceram crowns fit well in comparison to other crown types.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0142-9612
1878-5905
DOI:10.1016/0142-9612(95)00302-9