What are advantages and disadvantages of white dental filling compared with amalgam used in the past? Can it be replaced in all cases?

Technological advance changes many fields of human activities and dentistry is not exception. New materials, devices and procedures offer patients a more superior treatment options. White fillings in the past began as an imperfect material, which changed colour because of deterioration and were characterized by limited lifetime and low mechanical resistance.

How are today´s modern restorative materials? Up-to-date white fillings are made of photo composite resin. Photo composite resins are the most common type of white fillings. It is a material which hardens “on command” beside exposure of blue light. They have a good coloured stability and can very well imitate the appearance of the tooth and can be safely used on heavily loaded locations in back side of teeth structure. In most of situations today, they are an ideal material after that we primarily utilize.

While the main advantage of the patient's perspective is an insuperable aesthetics, from the perspective of doctor it is a strengthening of teeth. Old amalgam fillings only “packed out the hole in the tooth”. The teeth practically remained firm, as if they did not contain a filling and they often cracked. The modern photo composite fillings are strongly weighted on the tooth and they can hold weak parts of teeth together and prolong their vitality.

Furthermore, these fillings allow more considerate way of dental drilling. It always had to be ensured with amalgam , that the bottom part of filling was wider than upper, in order to amalgam after congealing stayed wedged in the tooth, because it was only one mechanism, which held in the tooth. In order to this shape of filling have created, the tooth had to be drill more than was the extent of decay. Besides white fillings, which are weighted on the walls of tooth, but enough to remove only decayed tissue and nevertheless will hold reliably.

What are the disadvantages of white fillings? In particular - sensitivity to moisture. In their creation is necessary to ensure a dry working field, because any moisture will cause leakage fillings and the risk of dental caries. In general, the entire working process is very demanding on the knowledge, patience and care of dentist and also the time, which is necessary in treatment.

Besides the above mentioned sensitivity to moisture dentist must also deal with the shrinkage of the material, accompanied by solidification. Because of its, the filling must be created from many thin layers, which are placed next to each other with regard to the complex biomechanical rules. If are these rules ignored, there is a risk of strong stress, which may manifest by pain in treated tooth and eventually its rupture (filling pull together opposite walls of the tooth). If not in this case correctly form a binding layer, filling breaks away from the wall of the tooth and later there is a risk of tooth decay.

A disadvantage compared with other filling materials is also the fact that photo composite resin has no effect against bacteria. Defective made white filling is for patient unlike to incorrectly made glass ionomer or amalgam far more dangerous, because the dental decay underneath progresses very quickly. For patients who are unable or unwilling to clean their teeth adequately photo composite filling may not be suitable and other material can be a more suitable option.

Patient always benefits from advantages of white fillings and their disadvantages do not detract patient ´s benefit, there are higher demands on dentist. If your dentist is sufficiently careful and work with each filling carefully, regularly educates in the field, you do not afraid of white fillings and in the most situations there are the best alternative.



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