Short answer
Prioritize margin designs that incorporate chamfers and bevels, as these configurations demonstrably improve the marginal adaptation of dental restorations throughout their production lifecycle.
- Field
- Final Production
- Source
- ISRN Dentistry (2011)
- Method
- Experimental
- Sample
- 24 participants (crowns)
- Evidence
- Strong effect
Specific margin designs, particularly those with a chamfer and bevel, significantly improve the marginal fit of dental restorations throughout the production process. This final production research insight is drawn from a 2011 study published in ISRN Dentistry. Using Experimental with 24 participants (crowns), researchers explored how this design variable affects real-world outcomes. The key design takeaway: Prioritize margin designs that incorporate chamfers and bevels, as these configurations demonstrably improve the marginal adaptation of dental restorations throughout their production lifecycle.
Chamfered and beveled margins enhance dental crown adaptation by up to 50%
Specific margin designs, particularly those with a chamfer and bevel, significantly improve the marginal fit of dental restorations throughout the production process.
ISRN Dentistry · 2011
Key Findings
- 01Margin designs with a chamfer and bevel (Group C and D) exhibited smaller marginal gaps compared to simple shoulder or chamfer designs.
- 02The marginal gap generally decreased from the coping stage to the cementation stage, with porcelain application showing no significant negative impact.
- 03All tested margin designs resulted in marginal gaps within clinically acceptable ranges, often below those reported for traditional ceramometal restorations.
Application
Design takeaway
Prioritize margin designs that incorporate chamfers and bevels, as these configurations demonstrably improve the marginal adaptation of dental restorations throughout their production lifecycle.
How to apply
When designing or specifying dental restorations, select margin designs that include a chamfer and a bevel to ensure superior marginal adaptation and clinical success.
Project actions
- 01When designing a product with critical interfaces, consider how the geometry of those interfaces affects assembly and final fit.
- 02Document the impact of each manufacturing step on the precision of critical components.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Quantitative measurement of marginal discrepancies.
- +Evaluation across multiple processing stages.
Limitations
The study was conducted in a controlled laboratory setting and may not fully represent real-world manufacturing variability. The long-term clinical implications of these marginal gaps were not assessed.
Reliability & validity
The use of digital imaging for measurement enhances the reliability of the data. The study's validity is supported by comparing results to established clinical standards for marginal adaptation.
Think critically
To what extent can the principles of optimizing margin design for dental restorations be applied to other precision-fit manufactured components, and what material properties would be essential for such applications?
Design Principles
"Optimize the geometry of critical interface features to enhance assembly precision and functional performance."
Achieving precise marginal adaptation in dental prosthetics is crucial for longevity and preventing secondary decay. Understanding how different margin designs and manufacturing steps influence this fit allows for the selection of optimal fabrication techniques and material choices, leading to more reliable and durable restorations.
What This Means for Your Design
Making the edge of a dental crown (the margin) sloped and then adding a small angled edge (a bevel) makes the crown fit much better to the tooth, and the fit gets even better as it's made and put in place.
How to use in your project
- 1.Use this study to justify the selection of specific geometric features for critical interfaces in your design, explaining how they contribute to improved performance or assembly.
- 2.Reference this research when discussing the impact of manufacturing processes on product precision and quality.
Add to My Project
Quick Cite
Paragraph starter
The investigation into Captek restorations highlights the significant influence of margin design on marginal adaptation. Specifically, the inclusion of a chamfer with a bevel (Group C) and a shoulder with a bevel (Group D) demonstrably reduced marginal discrepancies compared to simpler designs. Furthermore, the study revealed that while porcelain application had a negligible effect, cementation effectively reduced the marginal gap. These findings suggest that optimizing margin geometry is a critical factor in achieving precise fits in dental prosthetics, with all tested configurations yielding clinically favorable results.
Source
ISRN Dentistry
Effect of Margin Design and Processing Steps on Marginal Adaptation of Captek Restorations
journal · 2011
View sourceQuestions About This Research
- What does the research say about chamfered and beveled margins enhance dental crown adaptation by up to 50%?
- Prioritize margin designs that incorporate chamfers and bevels, as these configurations demonstrably improve the marginal adaptation of dental restorations throughout their production lifecycle. Evidence: ISRN Dentistry (2011).
- Why does "Chamfered and beveled margins enhance dental crown adaptation by up to 50%" matter for design?
- Achieving precise marginal adaptation in dental prosthetics is crucial for longevity and preventing secondary decay. Understanding how different margin designs and manufacturing steps influence this fit allows for the selection of optimal fabrication techniques and material choices, leading to more reliable and durable restorations.
- How can designers apply this research?
- Prioritize margin designs that incorporate chamfers and bevels, as these configurations demonstrably improve the marginal adaptation of dental restorations throughout their production lifecycle.
- What were the main findings?
- Margin designs with a chamfer and bevel (Group C and D) exhibited smaller marginal gaps compared to simple shoulder or chamfer designs.. The marginal gap generally decreased from the coping stage to the cementation stage, with porcelain application showing no significant negative impact.. All tested margin designs resulted in marginal gaps within clinically acceptable ranges, often below those reported for traditional ceramometal restorations.
- What research method was used?
- Experimental with 24 participants (crowns).
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2011 journal from ISRN Dentistry.
- What should I do differently in my next project?
- When designing or specifying dental restorations, select margin designs that include a chamfer and a bevel to ensure superior marginal adaptation and clinical success.
- What are the limitations?
- The study focused on a specific material (Captek) and may not be generalizable to all dental restorative materials. The digital imaging method's precision was not explicitly detailed.