Titanium is a strong and lightweight refractory metal. It is a lustrous transition metal with a silver color, low density, and high strength. Titanium is also formidable in its resistance to corrosion by both water and chemical media.It does this by forming a thin layer of titanium dioxide (TiO2) on its surface that is extremely difficult for these materials to penetrate.Having a low modulus of elasticity means that titanium is not also very flexible, but returns to its original shape after bending, resulting in its importance to shape memory alloys.
Titanium is non-magnetic and biocompatible (non-toxic, non-allergenic), which has led to its increasing use in the medical field.
An ideal biomaterial is expected to exhibit properties such as a very high biocompatibility, that is, no adverse tissue response. Also, it must have a density as low as that of bone, high mechanical strength and fatigue resistance, low elastic modulus and good wear resistance. It is very difficult to combine a…
Tooth discoloration can be the cause of great embarrassment and can make people feel self conscious about smiling .Teeth Stains, also commonly referred to as Teeth Discoloration, is caused by substances sticking onto the surface of your tooth or gathering within and contaminating the enamel of your tooth.Nevertheless, important lifestyle factors also play a large part in tooth discoloration and it is important to recognize these.
Symptoms include stains on the enamel. They can range from white streaks to yellow tints or brown spots and pits. If the enamel has worn away, and dentin is showing through, you may notice a yellow tint.
Food and drink. Coffee, tea, carbonated beverages and red wine can discolor teeth. Even certain fruits and vegetables can cause stain Poor dental hygiene. Inadequate brushing, flossing, and rinsing with an antiseptic mouthwash to remove plaque and stain-producing substances like coffee and tobacc…
Thumb sucking is a natural reflex for children. Kids suck their
thumbs because it's comforting and calming. It can also be soothing, and many
babies and toddlers use it as a coping mechanism when anxious or separated from
their parents. The habit helps to induce sleep, and children may suck their
thumbs in the evening before bedtime. After permanent teeth come in, sucking may cause problems with the
proper growth of the mouth and alignment of the teeth. It can also cause
changes in the roof of the mouth. The intensity of the sucking is a factor that
determines whether or not dental problems may result. If children rest their
thumbs passively in their mouths, they are less likely to have difficulty than
those who vigorously suck their thumbs. Some aggressive thumb suckers
may develop problems with their baby (primary) teeth. The best time to discourage thumb sucking is by
age four. By this time, prolonged sucking could begin to affect your child's
mouth and developing jaw and tee…