When you shop through links on our site, we may earn an affiliate commission. This educational content is not intended to be a substitute for professional advice.

Best Material For Dentures (2025 Update)

If you're looking for the best material for dentures, there are several factors you need to consider before making your purchase. The material of dentures plays a crucial role in their comfort, durability, and aesthetics. Before making your decision, it's important to understand the different materials available and choose one that suits your needs.

One factor to consider is the strength and durability of the material. Dentures are subject to daily wear and tear, so you'll want a material that can withstand repetitive use without breaking or chipping easily. Another important factor is the comfort of the material. Dentures should fit well and be comfortable to wear for long periods of time. Additionally, the aesthetics of the material are important. The material should closely resemble natural teeth in appearance and color.

When choosing the best material for dentures, some questions to consider include: Which material is the most durable and long-lasting? Is there a material that is more comfortable to wear? Which material provides the most natural-looking teeth? Are there any specific materials that are suitable for individuals with sensitivities or allergies? By considering these factors and asking the right questions, you'll be able to find the best material for dentures that meets your specific needs.

In conclusion, the choice of material for dentures is an important decision that requires careful consideration. By evaluating factors such as strength, comfort, and aesthetics, and asking relevant questions, you'll be able to make an informed decision and choose the best material for your dentures.

10 Best Material For Dentures

# Product Image Product Name Product Notes Check Price
1
The Dentemp Denture Reline Kit is ideal for refitting and tightening both upper and lower dentures.
2
The product is ideal for dental professionals or educators to teach and demonstrate denture placement and oral cavity loss.
3
The product is ideal for creating realistic and scary Halloween horror teeth sets.
4
The product is ideal for temporary denture replacement with synthetic resin teeth, available in six sets.
5
The product is ideal for individuals who need to reline one individual denture plate for a comfortable fit.
6
This product is ideal for creating a realistic and spooky Halloween costume or look.
7
The product is ideal for relining loose dentures to provide a comfortable and secure fit.
8
The product is ideal for making dentures due to its flexible acrylic material and high translucency.
9
The product is ideal for individuals who require relining of their dentures, providing a comfortable and secure fit.
10
The product is ideal for denture wearers who want to securely hold their dentures in place for up to 4 days.
The Dentemp Denture Reline Kit is ideal for refitting and tightening both upper and lower dentures.
The product is ideal for dental professionals or educators to teach and demonstrate denture placement and oral cavity loss.
The product is ideal for creating realistic and scary Halloween horror teeth sets.
The product is ideal for temporary denture replacement with synthetic resin teeth, available in six sets.
The product is ideal for individuals who need to reline one individual denture plate for a comfortable fit.
This product is ideal for creating a realistic and spooky Halloween costume or look.
The product is ideal for relining loose dentures to provide a comfortable and secure fit.
The product is ideal for making dentures due to its flexible acrylic material and high translucency.
The product is ideal for individuals who require relining of their dentures, providing a comfortable and secure fit.
The product is ideal for denture wearers who want to securely hold their dentures in place for up to 4 days.

1. Dentemp Denture Reline Kit: Ultimate Comfort And Fit

Introducing the Dentemp Reline-It Denture Reliner Kit, a must-have for anyone with dentures. This advanced formula is designed to make your dentures fit like new, providing stability and comfort that adhesive alone cannot offer. Over time, dentures can become loose and irritating, but with Dentemp Reline-It, you can improve the fit of both upper and lower dentures.

The Dentemp Reline-It Denture Reliner Kit is incredibly easy to use, allowing you to reline your dentures in just minutes. It contains everything you need to achieve a custom fit, making your loose dentures feel snug and secure once again. This soft denture reliner is effective and can be easily removed, providing you with long-lasting comfort and fit.

Not only does Dentemp Reline-It provide a temporary refit for your dentures, but it also works great for instant use. Whether you're preparing for a special occasion or simply want to smile confidently, this denture reliner will do wonders in making your teeth look natural. So, even if you can't make it to the dentist, you can still achieve a comfortable and secure fit with Dentemp.

Using the Dentemp Reline-It Denture Reliner Kit is a breeze. Start by thoroughly cleaning and drying your dentures. Then, place one packet of powder and one packet of liquid into the freezer for three minutes. Once chilled, mix the reliner liquid and powder as instructed. Ensure that your gums and palate are moist, then place the denture into your mouth and bite down. Hold the denture in the correct biting position for six minutes. You may experience a slight tingling sensation in your gums or palate, but rest assured, it is normal.

With Dentemp Reline-It, anyone can achieve a custom fit for their dentures. Simply follow the provided directions for the best results. This kit includes everything you need for two soft relines, ensuring that you have enough product to maintain the comfort and fit of your dentures over time.

Invest in the Dentemp Reline-It Denture Reliner Kit and say goodbye to loose, irritating dentures. Experience the confidence and comfort of well-fitting dentures with this easy-to-use formula. Don't let the passage of time compromise your smile – choose Dentemp and enjoy a snug and secure fit that lasts.

2. Resin Denture Set: Teaching Model For Oral Cavity Loss

Introducing the Denture Repair Kit with Safe Resin Material. This kit is made of high-quality resin materials, ensuring durability and resistance to damage. Unlike other denture repair kits, this one is seamless, free from defects, and provides a wonderful and complete teeth model denture.

The Denture Repair Kit is designed with convenience and reliability in mind. It features a good color of the model, making it easy to use and preventing the tooth surface pattern from being polished away during the base bracket polishing process.

This kit is specifically formulated for patients with oral cavity loss. However, it is important to note that it should be used under the guidance of a professional dentist. The Denture Repair Kit offers stability in color, as well as anti-whitening, anti-deformation, and anti-microcrack properties, ensuring long-lasting results.

With this package, you will receive 10 pieces of the Denture Repair Kit. Each kit includes a full mouth set, consisting of 28 resin teeth. This makes it perfect for dental or lab use. Dentists can use this kit to repair dental defects or create full dentures for their patients. Additionally, it can be used as a DIY study model for those interested in learning more about dentistry.

To ensure optimal results, it is recommended to follow the provided instructions. Before filling the denture base resin, make sure to clean the synthetic resin teeth thoroughly. Additionally, slightly file the back of the synthetic resin teeth and the joint of the base resin to ensure a firm and secure combination.

Invest in the Denture Repair Kit with Safe Resin Material today and enjoy its high-quality construction, reliability, and ease of use. Whether you're a professional dentist or a DIY enthusiast, this kit is sure to meet your needs and provide you with impressive results.

3. 56 Pcs Dental Acrylic Resin Denture Tooth Kit False Tooth 23 A2 For Halloween Horror Teeth(2sets)

Introducing the A2 Synthetic Resin Teeth Models, a brand new and high-quality product designed to enhance your makeup looks with realistic-looking teeth. These synthetic resin models are made from durable materials, ensuring their long-lasting use.

Unlike teeth crowns, these models are solid and not hollow, offering a more realistic feel and appearance. They are specifically designed to fit Teeth Models for Learning, making them ideal for practicing various dental procedures or enhancing your makeup artistry skills.

With the purchase of this product, you will receive 2 boxes, each containing 2 sets of teeth models. Each set includes 28 individual pieces, allowing for a versatile range of looks and applications.

Whether you are a makeup enthusiast looking to add an extra touch of authenticity to your creations or a dental student seeking a practical learning tool, the A2 Synthetic Resin Teeth Models are the perfect choice. Their realistic appearance and solid construction ensure a seamless integration into your desired looks or dental practice.

Invest in this high-quality product today and elevate your makeup skills or dental education to new heights.

4. Rzjzgz 168 Pcs Dental Synthetic Resin Tooth Denture Temporary False Teeth 6 Sets False Teeth 23 A2

Introducing the A2 Synthetic Resin Teeth Model! This high-quality product is designed to help you learn and practice with ease.

With its vibrant A2 color, this teeth model provides a realistic representation of natural teeth. The synthetic resin material used ensures durability and longevity, making it a reliable choice for your learning needs.

Rest assured that this product is brand new and of the highest quality. It has been meticulously crafted to meet your expectations and provide you with an exceptional learning experience.

Each box contains an impressive 6 suits, with each suit comprising 28 pieces. This generous quantity ensures that you have an ample supply to practice with and hone your skills.

Whether you're a dental student, a professional, or simply interested in understanding the intricacies of teeth, this Teeth Model is the perfect tool for you. Invest in your education and enhance your knowledge with this invaluable learning aid.

5. Perma Soft Denture Reliner – 1 Kit – Made In The Usa – Relines 1 Individual Plate

Introducing the Soft Denture Reline Kit – a must-have for anyone struggling with loose and irritating dentures. This innovative kit includes everything you need to achieve a secure and comfortable fit for your upper or lower denture. And the best part? Buy two kits and save on shipping!

Say goodbye to the discomfort of loose dentures with the Soft Denture Reline Kit. Designed to tighten, cushion, and pamper your gums, this kit is a game-changer. Whether you're enjoying a meal or engaging in a conversation, you can now do so with confidence and ease.

One of the standout features of the Soft Denture Reline Kit is its commitment to safety. Made with premium-quality materials, this kit is both zinc and phthalate-free. You can rest easy knowing that you're using a product that is safe and effective for your oral health.

But what really sets this kit apart is its longevity. According to numerous customer testimonials, the Soft Denture Reline Kit can last up to an impressive two years. That's right – two years of worry-free, snug dentures. Imagine the freedom and peace of mind that comes with knowing your dentures will stay firmly in place for an extended period.

With the Soft Denture Reline Kit, you can finally say goodbye to the hassle and discomfort of loose dentures. Experience the difference for yourself and enjoy the benefits of a secure and comfortable fit. Don't let loose dentures hold you back – invest in the Soft Denture Reline Kit today and reclaim your confidence.

6. Halloween Horror Collection: 168 Pcs Synthetic Resin Denture

Introducing the A3 Color Synthetic Resin Teeth Model, a brand new and high-quality product perfect for various uses. With its realistic appearance, this set of teeth is designed not just for makeup looks but also for learning purposes. Made from durable synthetic resin material, these teeth are solid and not hollow, ensuring longevity and reliable performance.

Featuring a vibrant A3 color, these teeth are eye-catching and add a touch of realism to any makeup look. Whether you're a professional makeup artist or simply experimenting with different styles, these teeth will help you achieve the desired effect with ease. Their realistic appearance enhances the overall look, making them ideal for special effects makeup or theatrical performances.

This set includes six boxes, each containing 28 pieces of teeth. In total, you'll receive 168 pieces, providing you with ample options and allowing for versatile applications. The ample quantity ensures that you'll have enough teeth for multiple uses or backup options.

Not only are these teeth great for makeup purposes, but they are also ideal for educational purposes. Whether you're a dental student, teaching professional, or simply curious about dental anatomy, these teeth provide an accurate representation of real teeth. Use them for teaching or learning about dental procedures, oral hygiene, or dental anatomy in a more hands-on and visual way.

Crafted from synthetic resin material, these teeth are durable and designed to withstand regular use. The solid construction ensures that they won't break or wear down easily, providing long-lasting performance. You can rely on these teeth for multiple applications without worrying about their durability.

Enhance your makeup looks, educational sessions, or artistic endeavors with the A3 Color Synthetic Resin Teeth Model. With its realistic appearance, solid construction, and ample quantity, this product offers both quality and versatility. Whether you're a makeup enthusiast, dental professional, or educator, these teeth are a valuable addition to your toolkit.

7. 6 Denture Reline Kits Denture Reline- Prosoft Reliner-Liner For Loose Dentures

Introducing the 6 ProSoft Denture Reline, a high-quality denture reline kit that promises to provide you with a great fitting denture and long-lasting comfort. This denture reline kit is made by Perma Laboratories, a trusted brand that is FDA cleared for over-the-counter use.

One of the standout features of the 6 ProSoft Denture Reline is its Zinc and Phthalate-free formula. This means that you can have peace of mind knowing that you are using a denture reline that is safe and free from potentially harmful ingredients. With this denture reline, you can confidently enhance the fit and comfort of your dentures without worrying about any adverse effects.

The 6 ProSoft Denture Reline is designed to be durable, flexible, and soft, ensuring that it provides a comfortable and snug fit for your dentures. The soft and flexible nature of this reline makes it easy to mold and shape to the contours of your mouth, resulting in a denture that fits securely and comfortably throughout the day.

This denture reline kit comes with everything you need to achieve a great fitting denture. Inside the package, you'll find all the necessary materials and instructions to guide you through the reline process. With clear and easy-to-follow instructions, you can confidently reline your dentures in the comfort of your own home.

Experience the benefits of a softer and more flexible denture reline with the 6 ProSoft Denture Reline. Say goodbye to discomfort and hello to long-lasting comfort and fit. With this reline, you can enjoy improved stability and reduced irritation, allowing you to confidently go about your day without any worries.

8. Zorvo Flexigum: High-Translucent Denture Material – Us Stock

With its exceptional elasticity, this dental wax is designed to withstand pressure and avoid breakage. You can confidently rely on its durability to provide a reliable solution for your dental needs.

Crafted with a smooth surface, this wax is incredibly easy to polish, allowing for a seamless finish. Achieve a professional-looking result effortlessly, thanks to its user-friendly nature.

The high translucency of this dental wax brings it close to the color of natural gums, ensuring a natural and aesthetically pleasing appearance. Say goodbye to any worries about your dental work standing out, as this wax seamlessly blends in.

In terms of its parameters, this dental wax boasts a temperature resistance of up to 287° C. This means that it can withstand high temperatures without compromising its integrity, providing you with peace of mind during any dental procedures.

Furthermore, the melting time of this wax ranges from 11 to 15 minutes, allowing for convenient and efficient usage. Spend less time waiting and more time focusing on achieving the desired results with this reliable dental wax.

To add to its appeal, this product is conveniently stocked in the USA, ensuring fast delivery right to your doorstep. No more waiting around for weeks on end – experience the ease and efficiency of our prompt delivery service.

Invest in the Elastic Dental Wax today and discover a reliable solution for all your dental needs. Experience its outstanding elasticity, smooth surface for easy polishing, high translucency, and remarkable temperature resistance. With fast delivery available, there's no reason to delay – order now and elevate your dental work to new heights!

9. Perma Soft Denture Reline Kit- 2 Boxes (Relines 4 Dentures)

The Denture Reline Kit is designed to offer exceptional comfort and stability for individuals experiencing loose and irritating dentures. Crafted from a soft, yet firm and durable material, this reline kit provides long-lasting results to enhance your denture-wearing experience.

With just one simple application, the Denture Reline Kit ensures a snug fit that can last for several months, and in some cases, even years. This means that you can enjoy the benefits of a properly fitting denture without the inconvenience of frequent adjustments or replacements.

As a DIY reline kit, it empowers users to take control of their denture maintenance, saving them both time and money. Since its inception in 1986, this kit has been trusted by countless customers to make their dentures fit perfectly until they can schedule an appointment with their dentist.

By eliminating the need for daily denture adhesives, the Denture Reline Kit offers a hassle-free solution for denture wearers. Say goodbye to the sticky mess and constant reapplication, and say hello to a more secure and comfortable denture fit.

The Denture Reline Kit features a user-friendly design that allows for easy application. It comes with clear and concise instructions that guide you through the process, ensuring a seamless experience even for those who are new to denture maintenance.

This reline kit is suitable for various types of dentures, including full and partial dentures, ensuring that individuals with different denture needs can benefit from its remarkable performance. It provides a custom fit that conforms to the unique contours of your mouth, offering optimal comfort throughout the day.

Invest in the Denture Reline Kit today and experience the difference it can make in your denture-wearing journey. With its exceptional comfort, long-lasting results, and cost-saving benefits, you can enjoy the freedom of a properly fitting denture without the hassle of loose or irritating discomfort.

10. Denturefit: 4-Day Hold With Cushiongrip – Category: Adhesives

Introducing the Denture Reliner Cushion, a revolutionary solution that ensures the best fit possible for your dentures. Say goodbye to uncomfortable gaps between your dentures and gums and hello to easy and comfortable eating.

This innovative product can be used with or without teeth glue. It adheres to your dentures and molds to the shape of your gums, creating a secure suction that keeps your dentures in place. No more need for slimy dental glue that can be messy and inconvenient.

One of the best things about the Denture Reliner Cushion is that it saves you the hassle of applying adhesive daily. It is waterproof and does not wash away with daily cleaning or overnight soaking. You can easily remove and reinsert your dentures without the need for additional adhesive.

Not only does the Denture Reliner Cushion provide a secure fit, but it also keeps your gums from hurting. The cushioned softness of this product provides a protective barrier against denture discomfort and mouth sores. Now you can wear your dentures without pain, in complete comfort, and with peace of mind.

Applying the Denture Reliner Cushion is a breeze. It applies easily and cleanly, making no mess. And when you're ready to change it, it is simple to remove. Plus, it is suitable for all plastic and porcelain denture plates because it is zinc-free.

With the Denture Reliner Cushion, you can enjoy the freedom to eat whatever you want without worrying about the fit of your dentures. Experience the confidence and comfort that comes with a perfectly fitting denture. Say goodbye to discomfort and hello to a whole new level of denture satisfaction.

Best Material For Dentures FAQs

Are there any health risks associated with certain denture materials?

Yes, there can be health risks associated with certain denture materials. One example is the use of dentures made from poor quality or allergenic materials, such as nickel or certain acrylic resins. These materials can cause allergic reactions in some individuals, leading to discomfort, inflammation, and even oral sores. Additionally, dentures that are not properly fitted or maintained can create oral health issues. Ill-fitting dentures can cause sore spots, gum irritation, and difficulty in chewing and speaking. They can also contribute to the development of oral infections, like thrush, due to the accumulation of bacteria and food particles. To minimize health risks, it is vital to choose high-quality denture materials, get regular check-ups with a dentist, and maintain good oral hygiene practices. It is recommended to consult with a dental professional for personalized advice and to address any concerns regarding denture materials.

Does the choice of denture material affect the cost?

Yes, the choice of denture material can affect the cost. Dentures can be made from different materials such as acrylic, porcelain, or a combination of both. Each material has its own advantages and cost implications.

Acrylic dentures are generally more affordable compared to porcelain dentures. They are also lightweight and easier to adjust. However, acrylic dentures may not be as durable as porcelain and may require more frequent repairs or replacements.

Porcelain dentures, on the other hand, are known for their natural appearance and durability. They can closely mimic the appearance of natural teeth and are more stain-resistant than acrylic dentures. However, porcelain dentures tend to be more expensive due to the higher cost of materials and the need for skilled craftsmanship for their fabrication.

It is important to consult with a dentist to determine the best denture material that suits your needs, budget, and oral health condition. They can provide you with more detailed information on the cost implications of different denture materials and help you make an informed decision.

What are the different materials used for making dentures?

There are several different materials used for making dentures, depending on the specific needs and preferences of the patient. The most common materials used for the base of dentures are acrylic resin and metal. Acrylic resin is a type of plastic that is lightweight, durable, and can be easily adjusted. Metal, typically cobalt-chromium or titanium, is used for partial dentures to provide added strength and stability.

For the artificial teeth, the most common material used is acrylic resin. This material can be color-matched to the patient's natural teeth and is relatively durable. However, porcelain can also be used for the artificial teeth, particularly for patients who desire a more natural appearance. Porcelain teeth are highly aesthetic and mimic the translucency of natural teeth, but they are more prone to chipping or breaking.

It is important to consult with a dentist or prosthodontist to determine the best material for your dentures based on your specific needs, budget, and personal preferences.

What is the best material for dentures that are resistant to staining?

The best material for dentures that are resistant to staining is porcelain. Porcelain dentures have a smooth surface that is highly resistant to the absorption of liquids, such as coffee, tea, or red wine, which are known to cause staining. Porcelain is also a durable material that retains its color and shape over time, making it a popular choice for patients who want natural-looking dentures that are less prone to discoloration.

Another material that is commonly used for stain-resistant dentures is acrylic. Acrylic dentures are less likely to stain compared to other materials such as composite resin. However, they may still be susceptible to some degree of staining over time, especially if proper oral hygiene practices are not followed.

To maintain the stain resistance of dentures, it is important to clean them regularly using a non-abrasive denture cleaner and to avoid consuming staining substances. Additionally, visiting your dentist for regular check-ups and professional cleaning can help keep your dentures looking their best.

What is the most comfortable material for dentures?

The most comfortable material for dentures is often considered to be flexible denture material. Flexible dentures are made from a type of nylon called thermoplastic resin, which is both lightweight and flexible. This material allows for a more natural fit and better adaptation to the shape of the gums, resulting in increased comfort for the wearer.

Traditional dentures are typically made from acrylic resin, which can be more rigid and may cause discomfort for some individuals. However, advancements in denture technology have led to the development of flexible dentures, which offer a more comfortable alternative.

It's important to note that the comfort of dentures can vary depending on individual preferences and oral anatomy. Therefore, it is recommended to consult with a dentist or prosthodontist who can assess your specific needs and provide personalized recommendations for the most comfortable denture material for you.

What material is recommended for dentures to minimize allergic reactions?

When it comes to minimizing allergic reactions with dentures, one material that is often recommended is acrylic. Acrylic is a widely used material in dentistry due to its biocompatibility, meaning it is less likely to cause an allergic reaction in most individuals. It is also lightweight, durable, and can be easily adjusted for a comfortable fit.

Another option that is sometimes recommended is porcelain. Porcelain is known for its natural appearance and strength, but it may not be suitable for everyone, especially those with known allergies to certain metals or ceramics.

To ensure the best material for your specific needs and to minimize the risk of allergic reactions, it is important to consult with your dentist or prosthodontist. They will be able to evaluate your medical history, perform any necessary tests, and recommend the most suitable material for your dentures.

Which material for dentures is the easiest to repair and maintain?

When it comes to the repair and maintenance of dentures, the material that is generally considered the easiest to work with is acrylic resin. Acrylic resin dentures are commonly used because they offer several advantages. Firstly, they are relatively easy to adjust or repair in case of minor damages or changes in fit. This is because the material can be easily manipulated and reshaped by a dental professional. Secondly, acrylic resin dentures are also easier to maintain compared to other materials like metal or porcelain. They can be easily cleaned using non-abrasive denture cleaners and regular brushing. Additionally, the material is less prone to staining and discoloration. However, it is important to note that any major repairs or adjustments to dentures should always be done by a qualified dental professional to ensure proper fit and function.

Which material is considered the best for dentures in terms of durability?

When it comes to durability, there are a few materials that are commonly used for dentures. One of the most durable materials is acrylic resin. It is known for its strength and resistance to wear and tear. Acrylic resin dentures are also relatively easy to adjust and repair if needed.

Another material that is highly durable is porcelain. Porcelain dentures are known for their natural-looking appearance and exceptional strength. However, they can be more prone to chipping or breaking if dropped or mishandled.

Another option for durable dentures is metal-based dentures, such as those made with a cobalt-chromium alloy. These dentures are incredibly strong and resistant to fracture. However, they may not be suitable for everyone, as some individuals may have allergies or sensitivities to metal.

Ultimately, the best material for dentures in terms of durability will depend on your individual needs and preferences. It is recommended to consult with your dentist or prosthodontist to determine the most suitable material for your specific situation.

Which material offers the best fit and stability for dentures?

When it comes to dentures, the choice of material for achieving the best fit and stability depends on various factors, including the patient's individual needs and preferences. Two commonly used materials for dentures are acrylic and porcelain.

Acrylic dentures, also known as acrylic resin dentures, are popular due to their affordability and ease of adjustment. They are lightweight and can be easily customized to fit the patient's mouth. Acrylic dentures can provide good stability and fit when properly fabricated and adjusted by a skilled dentist or prosthodontist. However, they may not offer the same level of durability as other materials.

Porcelain dentures, on the other hand, are known for their strength and natural appearance. They are more resistant to staining and wear compared to acrylic dentures. Porcelain dentures can provide a great fit and stability, especially when combined with a metal framework for added strength. However, they tend to be more expensive and may require a more meticulous fitting process.

Ultimately, it is essential to consult with a dental professional who can assess your specific needs and recommend the best material for achieving the optimal fit and stability for your dentures.

Which material provides the best aesthetics for dentures?

When it comes to the aesthetics of dentures, there are several materials to consider. The most commonly used materials for dentures are acrylic and porcelain. Both have their own advantages and considerations.

Acrylic dentures are a popular choice due to their affordability, durability, and ease of customization. They can be easily adjusted and repaired if needed. However, acrylic dentures may not provide the most natural-looking appearance as the material can wear down over time, resulting in a less vibrant appearance.

Porcelain dentures, on the other hand, are known for their superior aesthetics. Porcelain closely resembles natural teeth, providing a more lifelike appearance. It is also highly resistant to staining, making it a durable choice. However, porcelain dentures are more brittle than acrylic and can be prone to breakage if not handled with care.

Ultimately, the choice of material for dentures depends on individual preferences and needs. Consulting with your dentist will help determine which material will best meet your aesthetic goals and oral health requirements.