1

About Thailand / Re: koh tao, thailand shopping query

« on: August 20, 2012, 07:03:42 PM »

Your disc will cost you around 2000B - these are included in the usual Open Water Package but a dive centre may lend you a set if you just wanted to look them over again in the evening.

2

General Dentistry / Why do teeth need dental crowns?

« on: February 21, 2012, 07:18:18 PM »

    *To restore a tooth to its original shape.
    *To strengthen a tooth.
    *To improve the cosmetic appearance of a tooth.

The strengthening capability of dental crowns is related to the fact that they cover over and encase the tooth on which they are placed, thus serving as a splint which binds the tooth together. Dental crowns are a very important means by which a dentist can strengthen a tooth.

In contrast, dental fillings, especially large ones, often have a weakening effect on the teeth in which they are placed. Dental fillings rely on a tooth's remaining structure to hold and support them. Fillings, in general, don't strengthen a tooth and don't protect a tooth from the forces generated by biting and chewing.