How Long Does Dental Cement Last?
Dental cement plays a crucial role in various dental procedures, including the placement of crowns, bridges, and orthodontic brackets. It acts as an adhesive that securely holds these dental restorations in place. Patients often wonder about the longevity of dental cement and how long they can expect it to last before requiring replacement or maintenance. While the lifespan of dental cement can vary depending on several factors, understanding its durability is essential for ensuring optimal oral health and successful dental treatments. In this blog, we will explore the lifespan of dental cement and the factors that influence its longevity and provide insights into how long it typically lasts.
What is Dental Cement?
Dental cement is a type of dental material used to bond various dental restorations, such as crowns, bridges, and inlays/onlays, to natural teeth or dental implants. It is also known as dental adhesive or dental glue. The composition of dental cement can vary depending on the specific type and brand but typically includes a mixture of resin, glass ionomer, or zinc oxide eugenol. Some types of dental cement may also contain filler particles, such as silica or zirconia, to add strength and durability. Dental cement is applied to the prepared tooth or implant surface, and the restoration is then placed into position and held until the cement sets and hardens. The result is a strong and stable bond between the restoration and the tooth or implant, which helps to restore function and aesthetics to the patient's smile.
Types of dental cement commonly used in dentistry
Dental cement fills gaps between teeth and secures dental restorations like crowns, bridges, and veneers. It comes in different types based on its purpose, setting time, and durability. The two most commonly used types of dental cement are temporary dental cement and permanent dental cement. Temporary dental cement is used for short-term dental procedures like temporary crown placement, while permanent dental cement is used for long-term restorations like fixed prosthodontics. Both types of dental cement have advantages and disadvantages, and their selection depends on the specific clinical situation.
Temporary Dental Cement: This type of dental cement is typically used for short-term restorations and is designed to be easily removed when necessary. It is often used for provisional restorations, such as temporary crowns or bridges, while the final restoration is fabricated. Temporary dental cement can also be used to re-cement a loose or dislodged repair until a permanent solution can be implemented. Examples of temporary dental cement include zinc oxide eugenol (ZOE) and polycarboxylate cement.
Permanent Dental Cement: As the name suggests, this type of dental cement is intended for long-term use and is designed to bond restorations to teeth or implants securely. The permanent dental adhesive may be used for various restorations, including all-ceramic repairs, metal crowns or bridges, and implant-supported restorations. Examples of permanent dental cement include resin-modified glass ionomer (RMGI) cement and self-adhesive resin cement.
The lifespan of Temporary Dental Cement
Temporary dental cement is used for short-term dental procedures, such as temporary crown placement, inlay/onlay or temporary bridge fixation, and orthodontic appliance bonding. It is also commonly used in endodontic procedures to seal the access cavity until a permanent restoration can be placed.
The typical duration of temporary cement's effectiveness varies depending on the specific product and clinical situation. Some temporary adhesives may last a few days or weeks, while others may last up to several months. Factors that can affect the lifespan of temporary cement include the patient's oral hygiene, the number of occlusal forces applied, and the location of the restoration.
Signs of deterioration or failure of temporary cement include loss of retention or displacement of the restoration, sensitivity or discomfort, discoloration or staining around the repair, and rough or irregular surfaces. If any of these signs are observed, removing the temporary restoration and replacing the temporary cement with a new one is important.Â
The lifespan of Permanent Dental Cement
Permanent dental cement is an adhesive material used to bond dental restorations such as crowns, bridges, and veneers to natural teeth. The purpose of permanent dental cement is to provide a strong and durable adhesive that can withstand the forces of biting and chewing. Common applications of permanent dental cement include the cementation of inlays/onlays, posts, and implant abutments.
Several factors can influence the longevity of permanent dental cement. These factors include the type of cement used, the preparation of the tooth and restoration, the fit of the repair, and the patient's oral hygiene habits.
The average lifespan of permanent dental cement varies depending on the specific cement type used, the cementation process's quality, and the patient's oral hygiene habits. Generally, the permanent dental adhesive can last anywhere from 10 to 20 years or more with proper care and maintenance.
Several signs may indicate the need for cement replacement. These signs may include a loose or dislodged restoration, sensitivity or pain around the repair, visible cracks or chips in the restoration, or discoloration or staining around the edges of the restoration. If any of these signs are present, it is important to consult a dentist to determine if replacement of the dental cement is necessary.
Factors Affecting the Lifespan of Dental Cement
Dental cement is a common material used in dentistry for various purposes, such as filling cavities, attaching crowns, and securing orthodontic appliances. The lifespan of dental cement can be influenced by several factors, such as
- Type of dental cement used
- Oral hygiene practices
- Strength and integrity of the tooth structure
- Bite force and grinding habits
- Temperature changes and exposure to moisture
Type of dental cement used: The type of dental cement used can significantly affect its lifespan. Resin-based cement is known for its excellent bonding strength and durability, making them ideal for long-term restorations. However, glass-ionomer cement is more susceptible to breakdown over time, especially in areas of high stress.
Oral hygiene practices: Oral hygiene practices also play a vital role in the longevity of dental cement. Proper brushing and flossing can help prevent plaque and bacteria buildup around the restoration, reducing the risk of decay or infection. Regular dental cleanings can also remove any accumulated debris that may compromise the bond between the tooth and the cement.
Strength and integrity of the tooth structure: The power and integrity of the tooth structure can also affect the lifespan of dental cement. Teeth with weakened enamel or extensive decay may not provide a good surface for the cement to adhere to, leading to premature failure. In cases where significant tooth structure has been lost, additional support may be needed to ensure the longevity of the restoration.
Bite force and grinding habits: Bite force and grinding habits can put added stress on dental cement, potentially causing it to wear down or break over time. Patients who habitually grind or clench their teeth may require a stronger, more durable cement to ensure the restoration's longevity.
Temperature changes and exposure to moisture: Temperature changes and exposure to moisture can also impact the lifespan of dental cement. Extreme temperature fluctuations can cause the cement to expand or contract, compromising its bond with the tooth. Similarly, exposure to moisture can cause the cement to break down or wash away, leaving the restoration vulnerable to decay or infection.
Prolonging the Lifespan of Dental Cement
Dental cement bonds restorations, such as fillings or crowns, to teeth. To prolong the lifespan of dental cement, it's important to maintain good oral hygiene practices, including brushing twice a day with fluoride toothpaste and flossing daily. Regular dental check-ups and professional cleanings can remove plaque or tartar buildup that can weaken the bond between the restoration and the tooth. Additionally, avoiding excessive bite force and grinding habits can help prevent the repair from becoming loose or dislodged. Protecting teeth from extreme temperature changes, such as by not biting into hard or hot foods, can also help prevent restoration damage and maintain the bond with the tooth. Finally, following post-cementation instructions from your dentist, such as waiting to eat or drink after the procedure, can also aid in the longevity of the dental cement.
Conclusion
The longevity of dental cement depends on various factors, such as the type of cement used, the specific dental procedure it was applied for, and the patient's oral hygiene practices. Generally, dental cement is designed to provide a durable and long-lasting bond. However, it is not indestructible and can deteriorate over time due to wear, stress, or oral conditions. On average, dental cement can last anywhere from a few years to a decade or more. Regular dental check-ups and proper oral care can help extend the lifespan of dental cement and ensure optimal oral health. It is important to consult with a dental professional for specific guidance and maintenance recommendations based on individual circumstances.