The Effect Of The Temperature And Storage Period Of The Crown Material While The Bus-acryl On Flexural Strength

Feb 28, 2025 by ADMIN 112 views

The Effect of Temperature and Storage Period on Crown Flexural Strengths While Bus-ACRYL

Temporary crowns are a crucial part of the dental restoration process, serving as a protective barrier for prepared teeth, maintaining aesthetics, and facilitating chewing. The ideal temporary crown must possess sufficient strength to withstand pressure during chewing and endure for a specific period. BIS-ACRYL COMPOSIT resin has gained popularity for temporary crown fabrication due to its ability to overcome the limitations of conventional metacracular resin materials.

One of the essential mechanical properties in restoration materials is flexural strength, which determines the material's ability to withstand pressure without experiencing fractures or breakage. Low flexural strength indicates that the material is vulnerable to damage and is not suitable for making temporary crowns, particularly in posterior teeth that receive higher chewing loads.

Research has shown that the storage temperature and period of bus-acryl material can significantly impact its flexural strength.

Storage Temperature:

Manufacturer Recommendations: Producers typically recommend storing bus-acryl materials in the refrigerator (5 ° C) to extend the shelf life and maintain the quality of the material.
Research: Some studies have demonstrated that storage temperatures of 35 ° C can actually increase monomer mobility in the resin matrix, resulting in a higher degree of polymerization and better flexural strength.

Storage Period:

The Aging Process: Over time, bus-acryl materials undergo chemical and physical changes. The polymerization process may be imperfect, leading to a decrease in flexural strength.
Expected Limit: Materials that have exceeded the expiration limit generally exhibit lower flexural strength compared to new materials.

Research Result:

An experimental study with a post-test only control group design was conducted to investigate the effect of temperature and storage period on the flexural strength of bus-acryl material. The results showed that:

Significant Effect: There is a significant effect of temperature and storage period on flexural strength.
Storage Period: Materials with a storage period of less than 1 year and 1 year exhibit better flexural strength compared to materials stored for 2 years.
Storage Temperature: Storage temperatures of 5 ° C and 27 ° C produce better flexural strength compared to materials stored at a temperature of 35 ° C.

Conclusion:

This study demonstrates that the temperature and storage period have a significant influence on the flexural strength of the crown material while the bus-acryl. Therefore, it is essential to adhere to the recommendations of producers regarding the temperature and storage period of materials to ensure that the material has optimal strength and can be used for the making of a safe and effective temporary crown.

Recommendation:

Use Expired Materials: Utilize bus-acryl materials that are still within their expiration period.
Follow Manufacturer's Recommendations: Store the material in accordance with the manufacturer's recommendations.
Avoid Direct Sunlight Exposure: Prevent direct exposure to sunlight to maintain the material's quality.
Optimal Storage Temperature: Consider the use of materials with optimal storage temperatures to achieve better flexural strength.

It is crucial to remember that flexural power is one of the essential factors in determining the success of making a temporary crown. The selection of materials and proper manufacturing techniques will ensure a strong and long-lasting temporary crown, allowing patients to enjoy a comfortable and effective dental care process.

Future Research Directions:

Investigate the effect of different storage temperatures on the flexural strength of bus-acryl material.
Examine the impact of storage period on the mechanical properties of bus-acryl material.
Develop new manufacturing techniques to enhance the flexural strength of bus-acryl material.

By understanding the effect of temperature and storage period on the flexural strength of bus-acryl material, dental professionals can make informed decisions when selecting materials for temporary crown fabrication, ultimately ensuring the success of the dental restoration process.
Frequently Asked Questions: The Effect of Temperature and Storage Period on Crown Flexural Strengths While Bus-ACRYL

In our previous article, we discussed the importance of understanding the effect of temperature and storage period on the flexural strength of bus-acryl material in temporary crown fabrication. To further clarify this topic, we have compiled a list of frequently asked questions and answers.

Q1: What is the ideal storage temperature for bus-acryl material?

A1: The ideal storage temperature for bus-acryl material is typically recommended by the manufacturer, which is usually around 5 ° C. However, some studies have shown that storage temperatures of 35 ° C can increase monomer mobility in the resin matrix, resulting in a higher degree of polymerization and better flexural strength.

Q2: How does the storage period affect the flexural strength of bus-acryl material?

A2: The storage period can significantly impact the flexural strength of bus-acryl material. Over time, the material undergoes chemical and physical changes, which can lead to a decrease in flexural strength. Materials that have exceeded the expiration limit generally exhibit lower flexural strength compared to new materials.

Q3: What is the recommended storage period for bus-acryl material?

A3: The recommended storage period for bus-acryl material varies depending on the manufacturer's recommendations. However, it is generally recommended to use materials that are within their expiration period to ensure optimal strength and quality.

Q4: Can bus-acryl material be stored at room temperature?

A4: While bus-acryl material can be stored at room temperature, it is not recommended. Storage at room temperature can lead to a decrease in flexural strength due to the increased monomer mobility in the resin matrix.

Q5: How does the storage temperature affect the flexural strength of bus-acryl material?

A5: The storage temperature can significantly impact the flexural strength of bus-acryl material. Storage temperatures of 5 ° C and 27 ° C produce better flexural strength compared to materials stored at a temperature of 35 ° C.

Q6: Can bus-acryl material be used for making temporary crowns in posterior teeth?

A6: While bus-acryl material can be used for making temporary crowns, it is not recommended for posterior teeth that receive higher chewing loads. The material's flexural strength may not be sufficient to withstand the pressure, leading to fractures or breakage.

Q7: How can dental professionals ensure the optimal strength and quality of bus-acryl material?

A7: Dental professionals can ensure the optimal strength and quality of bus-acryl material by following the manufacturer's recommendations for storage temperature and period, using materials that are within their expiration period, and avoiding direct exposure to sunlight.

Q8: What are the future research directions for bus-acryl material?

A8: Future research directions for bus-acryl material include investigating the effect of different storage temperatures on the flexural strength of the material, examining the impact of storage period on the mechanical properties of the material, and developing new manufacturing techniques to enhance the flexural strength of the material.