Dental Teeth Fillings

Dental Teeth Fillings

Cosmetic Dentist & 24 Hour Emergency Dental Specialists

Teeth Fillings – Materials Used for Tooth Restorations

Many types of metals are used in dentistry for the replacement and rehabilitation of oral structures. Most of these metals are considered to be inert when placed in the body while others have been criticised as potential toxins or allergens to some people. Plastic and ceramic are used commonly as tooth restoratives and have not had adverse biologic responses.

Which type of tooth restoration is best for you?

Your dentist will give you advice and advantages and disadvantages of each type to allow you to make an informed decision. The best type for you will depend on how big the restoration is, whether it is in a visible part of the mouth and cost.

Restoration of Parts of Single Teeth – Fillings

Silver amalgam (an alloy that contains silver, tin, copper, zinc, and about 50% mercury) has been used for approximately 160 years for the restoration of teeth. It has been highly successful but is an unsightly material. Use of mercury in the body has been criticised since its inception, but amalgam use is still supported strongly by the Australian Dental Association and other groups worldwide. A small percentage of people in the overall population may be allergic to the elements in silver amalgam. You do have several options:

Types of fillings:

Gold Inlays and Onlays

Average longevity 20 years to life; gold colour; moderate-to-high initial cost; may be used in any size restoration in any location where metal is not displayed.

teeth fillings goldResin Composite (plastic)

Average longevity 10-15 years; tooth-coloured; moderate cost; best-used in small-to-medium-size restorations for any teeth; direct one-day placement.

teeth fillings resinGlass Ionomer

Average longevity is around 10 years. Tooth-coloured, fluoride containing plastic type filling. Not very strong, so wears down quickly. Good for fillings in kids teeth, or as a temporary filling, or in a patient with a lot of decay.

Ceramic Indirect

Average longevity 10-15 years; tooth-coloured; moderate-high initial cost; best in moderate-sized restoration for any teeth; two-appointment placement.

Crowns or Fixed Prosthesis

Gold alloys have been used for many years for the construction of crowns or fixed bridges. They provide excellent, strong, long-lasting service. Two major types of alloys are now available:

High Noble Metal

Mostly gold, also palladiums, silver; occasionally platinum, zinc, copper.

Base Metal

Mostly nickel also chrome or cobalt and other base metals.

All of the above metals are used either as the sole constituent of a crown, or as a base on which porcelain is fired (baked). Most people have no biologic response to the base metals. If you have known allergies to metals, please tell us. We usually use high-noble metals. The cost of these is somewhat higher than base metals.

Porcelain Only Crowns

Pure porcelain crowns are now being used more extensively in aesthetic areas.

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