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Evolution of Tooth Implants

Dental implantology has made huge strides in just the past 20 years - but the concept is anything but new.

The idea of a tooth replacement anchored permanently into the jaw has been around since antiquity. Archeologists know the ancient Egyptians tried to implant precious stones into the jawbone where teeth were lost. Half a world away, Mayan ruins in Mexico turned up jawbones with tooth implants carved from seashells.

Tooth loss is one of humankind's most common afflictions - and permanent replacement one of dentistry's fondest dreams. If you have a missing tooth or teeth, you probably understand why.

Fast-forward now from the Third Dynasty to today's dental research labs. Three major research advances - all in the past 15 years - combined to make dental implants practical and workable in a wide range of patients.

Tooth implants substitute the rooting of 32 individual teeth with a few metal anchor posts onto which snaps either an overdenture or a fixed bridge. Investigators found that posts made of the metal titanium were strong, non-toxic over years in the mouth, and biologically compatible.

The next critical discovery was the concept of "osseointegration" - in which the healing jawbone actually grows into the dental implant post. This union is capable of sealing harmful bacteria out of the bone tissue.

Credit the computer revolution with the final critical breakthrough: Computerized Tomography (CT) can be used to develop a model of the jawbone's surface. This eliminates the need for preliminary surgery required to make impressions of the jawbone. For certain patients CT imaging can make tooth implant surgery a one-step procedure.

Teeth implants aren't for everybody. But research technicians have expanded its potential beyond the dreams of - well, certainly Ramses II.

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.

Immediate Dental Implants: What Are They?

Implant dentistry is a safe, predictable method for replacing missing teeth. "Immediate dental implants" or the placement of tooth implants at the time of extraction is a great method of implant placement. This method can be considered when a single upper front tooth is traumatized, when one or two teeth have advanced decay, or when the remaining roots are too short to support a crown. The purpose of this method of tooth replacement is to maintain as much bone volume as possible. This means preserving bone height and width. The benefits to the patient after restoration of dental implants are a beautiful, natural-looking tooth without cutting down healthy adjacent teeth and being able to eat in comfort without the fear of having the tooth loosen or fall out.

An implant dentist can easily determine if a person is a candidate for the immediate dental implants method of replacing missing teeth. They will examine the teeth adjacent to the involved tooth for periodontal disease and take a traditional dental X-ray. Impressions of the teeth will aid in determining one's prognosis. Additional X-rays may be necessary to determine the exact bone width and height, as well as the root position.

Implant placement is performed with local anesthesia. The remaining root is removed and the gum tissue is gently displaced from the surrounding tissue. The dental implant site is prepared with small drills. Special equipment is used to gently place the tooth implant into the prepared site, after which the gums are replaced over the implant with sutures. A temporary tooth replacement is placed in the space where the tooth was removed. Post-operative discomfort is minimal. The sutures are removed in a week, and oral hygiene is resumed.

In the upper jaw, bone grows and adheres to the tooth implant within five to six months, while the immediate dental implants in the lower jaw require three to four months for proper bone formation. After healing, there is a series of visits when an implant dentist will make a tooth that will be attached to the implant. Within a few weeks after receiving the implant-supported crown, patients consider the restoration as their own tooth, rather than an implant.

Implants require good oral hygiene, dental maintenance, and periodic evaluation by a dentist. For further information regarding placement of tooth implants at the time of extraction, look in PubMed, searching the following key words: placement of implants at time of extraction, dental implants, immediate implants.

By William Becker, DDS

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.