a) Removable partial denture
– consists of replacement teeth attached to a pink or gum-colored plastic base, which is sometimes connected by metal framework that holds the denture in place in the mouth.
– used when one or more natural teeth remain in the upper or lower jaw.

b) Fixed partial denture:
– Also known as “crown and bridge” dentures
Both crowns and most bridges are fixed prosthetic devices. Unlike removable devices such as dentures, which you can take out and clean daily, crowns and bridges are cemented onto existing teeth or implants, and can only be removed by a dentist.

Your dentist may recommend a crown to:
• Replace a large filling when there isn’t enough tooth remaining
• Protect a weak tooth from fracturing
• Restore a fractured tooth
• Attach a bridge
• Cover a dental implant
• Cover a discoloured or poorly shaped tooth
• Cover a tooth that has had root canal treatment

Bridges are commonly used to replace one or more missing teeth. They are cemented to the natural teeth or implants surrounding the empty space. The imbalance caused by missing teeth can also lead to gum disease and temporomandibular joint (TMJ) disorders.
– A strict regimen of brushing and flossing will keep the bridge and surrounding teeth clean. This is of critical importance as the bridge relies on the neighbouring teeth for support.

c) Complete denture
-Complete dentures can be either “conventional” or “immediate.”
– Made after the teeth have been removed and the gum tissue has begun to heal, a conventional denture is ready for placement in the mouth about eight to 12 weeks after the teeth have been removed.
– Immediate dentures are made in advance and can be positioned as soon as the teeth are removed.
– As a result, the wearer does not have to be without teeth during the healing period.
– However, bones and gums shrink over time, especially during the healing period following tooth removal.