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Dental Treatments Dentures Dentures , also known as false teeth, are prosthetic devices constructed to replace missing teeth; they are supported by the surrounding soft and hard tissues of the oral cavity. Conventional dentures are removable. However, there are many different denture designs, some which rely on bonding or clasping onto teeth or dental implants. There are two main categories of dentures, the distinction being whether they are used to replace missing teeth on the mandibular arch or on the maxillary arch. Dentures are used in place of missing teeth for the purpose of proper chewing, protection of the gums, improvement in speech, and for aesthetic reasons. There are many types of dentures depending on their structure and design. Two of the common types include removable and fixed dentures. Although many people prefer removable dentures because they are easy to maintain and also comfortable to wear, but the choice of dentures must be made according to the condition of your mouth and some other factors. Fixed and removable dentures are types of partial dentures that are worn by patients who are missing only some of their teeth. Other than crown and bridgework, dental implants (or artificial teeth) are also placed as permanent fixtures in the mouth. Although they are enduring and in most cases appear just like natural teeth, these artificial teeth are harder to clean than removable dentures. Since they cannot be removed, they may become susceptible to inflammation and other oral problems. At first it is difficult to get used to wearing removable partial dentures and you may require some practice to place the dentures properly in the mouth. While patients who wear complete removable dentures find it comfortable to use them only while eating or going out, those who wear removable partial dentures may choose to keep them on for as long as they want. However, if you feel swelling or pain, you may want to let your dentist know. Partial dentures are delicate devices and therefore should be handled with care. Your dentist will give you complete guidelines on how to clean and care for them. It is not recommended to use toothpastes for brushing these artificial teeth and you should always remove them before brushing or flossing. Partial dentures are designed to protect the remaining teeth in your mouth, but you should also take extra steps to ensure proper oral hygiene in order to prevent gum disease and tooth decay.
Crowns/ Bridges When teeth are heavily decayed they may be too weak to survive with just a filling. By placing a crown, a tooth may be given a new lease of life. Even when a single tooth is lost a denture may not be required as a bridge can be made which spans the gap with a tooth attached to those next to the space. Sometimes when a single small tooth is lost at the front of the mouth a simple bridge can be made which has 'wings' that are glued to the back of the adjacent teeth. This results in less tooth being damaged by the drill. When a tooth is heavily decayed it is more likely to fracture and lose considerable tooth substance. The greater risk is that a fracture line may go below the margin of the gum which makes restoration more difficult or near impossible.
CROWNS Crowns may be made from several different materials, gold and porcelain being the most common types. Gold is usually used on the back teeth, as it has several advantages over porcelain teeth. - Gold is strong in thin section and less tooth needs to be drilled away before taking the impression and fitting the crown. - The lab technician finds it easier to use gold as it shrinks less when cast and is easier to polish. Crowns of porcelain shrink when cast and the technician has to estimate this when making the crown. Porcelain is usually always used for the front teeth but may be used for the back teeth. This material can be made to appear very natural though several factors affect this and are outlined below; Some porcelain crowns have metal inside which gives strength and support to the porcelain. This acts as a barrier for light and gives the crown a dull colour. On posterior teeth this won't be noticed but in the front of the mouth it can occasionally be a problem as the tooth looks duller than the natural teeth.
BRIDGES A bridge allows the dentist to replace lost teeth without the use of a denture or dental implant. Basically a false tooth is held in place by being attached to a tooth next door. The disadvantage is that the teeth next to the space have to be prepared in a similiar way to a crown in order to accept the bridge. If these teeth already have crowns or big restorations then this is not a problem, the major concern however is when these teeth have small or no restorations (fillings). One compromise is the 'acid etched bridge', with this type a fine ledge is placed on the back of the adjacent teeth One disadvantage of a bridge is that the patient should wait three months before placement as the 'gum' shrinks' after a tooth is extracted. If the bridge was fitted early a gap would appear underneath the pontic (the false tooth). At the back of the mouth this may not be a problem, at the front of the mouth however this may appear as a black line along the gum. |
