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Inlays, Onlays and Overlays

Some of the factors which lead to teeth restoration in the posterior sectors of the mouth (molars and premolars) are dental caries, worn down teeth, abrasions or traumatism.Compound resins, also known as composites, are the most commonly used in these procedures because of their durable nature, aesthetic appearance and mechanical properties (almost identical to dental tissue). Dentists stopped using dental amalgams years ago due to their potential toxicity.

In cases where the lesion is severe, the dentist will use composites which have been reinforced with glass fibre or ceramics. In this way, the tooth becomes more resistant to wear and tear due to its greater durability. In these cases, the treatment takes places over two sessions as the preparation of the restoration is carried out in the laboratory.

The placement of an inlay does not involve cutting away as much of the tooth as in the cases of crown placement. Ceramic crowns are recommended when there has been a great loss of dental tissue or for aesthetic reasons.

What is the difference between inlays, onlays and overlays?

It depends on which part of the tooth needs repair. Inlays cover the centre of tooth without touching the cusps. Onlays cover one or more cusps and Overlays cover the whole occusal surface of the tooth.

Dr. Antoni M. Lluch | Specialist in Stomatological Prosthesis, Dental Aesthetics and the TMJ Pathology

Dr. Marc Rovira | Endodontics and Dental Aesthetics Specialist

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