Tooth Coloured Fillings
It is a dental restoration technique used to restore the function of the missing tooth structure. Tooth colored fillings material has undergone continuous changes over a period of time. The most versatile and widely used tooth colored filling is composite resin filling. A composite is a material in which filler particles are encased in and bound together by a hard matrix material. For composite resin fillings a fluid matrix of an acrylic, called BIS-GMA, is hardened around glass filler particles to form composite resin.
WHY DO CAVITIES OCCUR?
Cavities will occur if you do not brush and floss your teeth regularly.
The initial attack of bacterial acid is on enamel and the dissolution starts. During this time, it may appear as brownish or black discoloration of tooth. On progression, this converts into a cavity or a hole in the tooth. At this time the usual complaint is that the food gets impacted between the teeth. Further progression of this lesion leads to involvement of dentin. During this time, the patients complain of sensitivity to hot and cold or sweet and sour things.
The dentist removes all the decayed part of the tooth. Next he fills the tooth. Filling materials are of four types.
» Silver Amalgam
» Glass Ionomer
» Light Cure Glass Ionomer
» Light Cure Composite Resin
Normally used as a filling for deciduous (milk) teeth in child patients.
Light Cured Glass Ionomer :
Generally used to restore the cervical abrasions sensitive to cold.
Light Cure Composite Resin :
Magical change in appearance by replacing silver amalgam with light cure filling
Light cure composite resins have certain advantages over silver fillings. These are
» It is tooth coloured
» It bonds to the tooth surface
» Its strength is much more than silver amalgam
» Life of a resin filling is much more than silver amalgum.
Filling of teeth requires one sitting. It is a painless procedure. If tooth decay is not treated and allowed to spread the pulp of the tooth is destroyed which then needs root canal treatment that is longer and more expensive than a filling.