Made of a tissue-colored acrylic material and held in place by wrought wire or clear plastic clasps. Additional teeth can easily be added over time, as needed. Typically less expensive, but can feel more bulky in the mouth. Also, tends to break more easily than other options. 

Made with minimal acrylic material set on metal framework, allowing for thinner, smaller overall feel. Offers superior strength, but typically at a more expensive cost. Is more difficult, but still possible, to add additional teeth later on. 

Made of a thermoplastic nylon resin material. Very thin and durable. Flexibility minimizes breakage, and allows for clasps that secure tightly around natural teeth. This provides a comfortable and confident fit. Generally more expensive and very difficult to have additional teeth added later.