Direction (Q. No. 26 to 30) : Read the following passage carefully and choose the best answer to each question out of four alternatives.

Welcome to the brave new world of high-tech dentistry. Here, teeth stained by coffee, tea and tobacco are bleached considerably white in a single sitting, and crowned and laminated in a single visit. Infected gum tissue can be vaporized bloodlessly in a few minutes with lasers.

Even though restorative dentistry dates back to ancient civilizations, it is, in a sense, a new art and one that is increasingly in demand. Indeed, restorative dentistry has become a multi-billion-dollar industry. More and more people are clamouring for dentistry that not only ensures good oral health, but also helps attract admiring glances and raises self-esteem.

If you need a restoration-either an inlay that replaces part of a tooth or a crown that covers it entirely, some dentists offer a space age ticket called ‘Cerec’. This laser scanner outlines and preserves the genetic design of your tooth with precision. It calculates the tooth’s exact size and shape, creates a three dimensional computer image and sends it to a milling unit where, in minutes diamond burrs transform a tiny block of ceramic that is coloured to match the enamel of your other tooth into a natural looking crown.

Question-28 : What does the word ‘oral’ mean in the passage?

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