Oral Surgery - Wisdom Teeth
Wisdom teeth, also known as third molars, are the last teeth to erupt in your mouth. This generally occurs between the ages of 17 and 25, a time of life that has been called the "Age of Wisdom."
Anthropologists note that the rough diet of early humans resulted in the excessive wear of their teeth. Normal drifting of the teeth to compensate for this wear ensured that space was available for most wisdom teeth to erupt by adolescence. The modern diet, which is much softer, and the popularity of orthodontic tooth straightening procedures produce a fuller dental arch, which quite commonly doesn't leave room for the wisdom teeth to erupt, thereby setting the stage for problems when the final four molars enter the mouth.
What is an Impacted Tooth?
Complications such as infection (fig. a) , damage to adjacent teeth and the formation of cysts may arise from impacted teeth.
A tooth becomes impacted when there is a lack of space in the dental arch and its growth and eruption are prevented by overlying gum, bone or another tooth.
How Serious is an Impacted Tooth?
Impacted teeth can be painful and lead to infection.They may also crowd or damage adjacent teeth or roots.
More serious problems may occur if the sac surrounding the impacted tooth becomes filled with fluid and enlarges to form a cyst. As the cyst grows it may hollow out the jaw and permanently damage adjacent teeth, the surrounding bone and nerves. Rarely, if a cyst is not treated, a tumor may develop from its walls and a more serious surgical procedure may be required to remove it.
Despite the considerable concern regarding impacted third molars, a recent study sponsored by the American Association of Oral and Maxillofacial Surgeons and the Oral and Maxillofacial Surgery Foundation finds that third molars which have broken through the tissue and erupted into the mouth in a normal, upright position may be as prone to disease as those third molars that remain impacted.
Must the Tooth Come Out if it Hasn't Caused Any Problems Yet?
Not all problems related to third molars are painful or visible. Damage can occur without your being aware of it.
As wisdom teeth grow, their roots become longer, the teeth become more difficult to remove and complications become more likely. In addition, impacted wisdom teeth are more likely to cause problems as patients age.
No one can predict when third molar complications will occur, but when they do, the circumstances can be much more painful and the teeth more difficult to treat.
When Should I Have My Wisdom Teeth Removed?
Wisdom teeth are easier to remove when the patient is younger, since their roots are not completely formed, the surrounding bone is softer, and there is less chance of damaging nearby nerves or other structures. Removal of wisdom teeth at a later age becomes more complicated as the roots have fully developed (may involve the nerve), and the jawbone is denser.
It isn't wise to wait until your wisdom teeth start to bother you. In general, earlier removal of wisdom teeth results in a less complicated healing process.The AAOMS/OMSF study strongly recommends that wisdom teeth be removed by the time the patient is a young adult in order to prevent future problems and to ensure optimal healing.The researchers found that older patients may be at greater risk for disease, including periodontitis, in the tissues surrounding the third molars and adjacent teeth. Periodontal infections, such as those observed in this study, may affect your general health.
What Happens During Surgery?
Before surgery, your oral and maxillofacial surgeon will discuss with you what to expect. This is a good time to ask questions or express your concerns. It is especially important to let the doctor know about any illness you have and medications you are taking.
The relative ease with which a wisdom tooth may be removed depends on several conditions, including the position of the tooth and root development. Impacted wisdom teeth may require a more involved surgical procedure.
Most wisdom tooth extractions are performed in the oral and maxillofacial surgery office under local anesthesia, intravenous sedation or general anesthesia. Your oral and maxillofacial surgeon will discuss the anesthetic option that is right for you.
What Happens after Surgery?
Following surgery, you may experience some swelling and mild discomfort, which are part of the normal healing process. Cold compresses may help decrease the swelling, and medication prescribed by your Oral and Maxillofacial Surgeon can help manage the discomfort. You may be instructed to modify your diet following surgery and later progress to more normal foods.
Did you know that dental implants are frequently the best treatment option for replacing missing teeth? Rather than resting on the gum line like removable dentures, or using adjacent teeth as anchors like fixed bridges, dental implants are long-term replacements that your oral and maxillofacial surgeon surgically places in the jawbone.
A Solution of Choice for Replacing Missing Teeth
Statistics show that 69% of adults ages 35 to 44 have lost at least one permanent tooth to an accident, gum disease, a failed root canal or tooth decay. Furthermore, by age 74, 26% of adults have lost all of their permanent teeth.
Twenty years ago, these patients would have had no alternative but to employ a fixed bridge or removable denture to restore their ability to eat, speak clearly and smile. Fixed bridges and removable dentures, however, are not the perfect solution and often bring with them a number of other problems. Removable dentures may slip or cause embarrassing clicking sounds while eating or speaking. Of even greater concern, fixed bridges often affect adjacent healthy teeth, and removable dentures may lead to bone loss in the area where the tooth or teeth are missing. Recurrent decay, periodontal (gum) disease and other factors often doom fixed bridgework to early failure. For these reasons, fixed bridges and removable dentures usually need to be replaced every seven to 15 years.
Today there is another option for patients who are missing permanent teeth. Rather than resting on the gum line like removable dentures, or using adjacent teeth as anchors like fixed bridges, dental implants are long-term replacements that your oral and maxillofacial surgeon surgically places in the jawbone. Composed of titanium metal that "fuses" with the jawbone through a process called "osseointegration," dental implants never slip or make embarrassing noises that advertise the fact that you have "false teeth," and never decay like teeth anchoring fixed bridges. Because dental implants fuse with the jawbone, bone loss is generally not a problem.
After more than 20 years of service, the vast majority of dental implants first placed by oral and maxillofacial surgeons in the United States continue to still function at peak performance. More importantly, the recipients of those early dental implants are still satisfied they made the right choice. If properly cared for, dental implants can last a lifetime.
Anatomy of a dental implant
A dental implant designed to replace a single tooth is composed of three parts: the titanium implant that fuses with the jawbone; the abutment, which fits over the portion of the implant that protrudes from the gum line; and the crown, which is created by a prosthodontist or restorative dentist and fitted onto the abutment for a natural appearance.
Many people who are missing a single tooth opt for a fixed bridge; but a bridge may require the cutting down of healthy, adjacent teeth that may or may not need to be restored in the future. Then there is the additional cost of possibly having to replace the bridge once, twice or more over the course of a lifetime. Similarly, a removable partial denture may contribute to the loss of adjacent teeth. Studies show that within five to seven years there is a failure rate of up to 30% in teeth located next to a fixed bridge or removable partial denture.
Further, conventional dentures may contribute to the loss of bone in the area where teeth are missing. The presence of natural teeth preserves the jawbone. When a tooth is missing, the bone may erode and weaken until it may be necessary for your oral and maxillofacial surgeon to graft bone to the area to strengthen it for placement of a dental implant. When a missing tooth is replaced by a dental implant, the fusion, or osseointegration, of the implant and bone provides stability, just as the natural tooth did.
If you are missing several teeth in the same area of your mouth, you may still enjoy the confidence and lifestyle benefits that come with dental implants. Your oral and maxillofacial surgeon will place two or more dental implants, depending on the number of teeth that are missing. Your replacement teeth will be attached to the implants to allow excellent function and prevent bone loss. The implants will serve as a stable support that tightly locks into your replacement teeth and dentures to prevent slipping and bone loss.
With an overall success rate of about 95% and almost 50 years of clinical research to back them up, dental implants are frequently the best treatment option for replacing missing teeth.
Dental Implants vs. Conventional Dentures
Many patients who have selected dental implants describe a quality of life that is much more comfortable and secure than the lifestyle endured by those with fixed bridges or removable dentures. Dentures often make a person feel and look older than they are, cause embarrassment in social situations when they slip and click, and restrict the everyday pleasure of eating comfortably.
When they count the benefits they enjoy as a result of their dental implants, patients say their implants eliminate the day-to-day frustrations and discomfort of ill-fitting dentures. They allow people to enjoy a healthy and varied diet without the restrictions many denture wearers face. With a sense of renewed self-confidence, many people rediscover the excitement of an active lifestyle shared with family and friends and the chance to speak clearly and comfortably with co-workers. For all these reasons, people with dental implants often say they feel better... they look better... they live better.
Dental Implants are a Team Effort
Dental implants combine the best of modern science and technology, including a team approach spanning several disciplines.
A successful implant requires that all parties involved — the patient; the restorative dentist, who makes the crown for the implant; and the oral and maxillofacial surgeon, who surgically places the implant, follow a careful plan of treatment. All members of the implant team stay in close contact with each other to make sure everyone clearly understands what needs to be done to meet the patient's expectations.
The team is organized as soon as the decision for placing a dental implant is reached. Following an evaluation that includes a comprehensive examination, x-rays and a consultation with the patient and members of the implant team, the oral and maxillofacial surgeon surgically places the posts, or implants, in the patient's jaw.
When the implants have stabilized in the jaw, the restorative dentist prepares an impression of the upper and lower jaws. This impression is used to make the model from which the dentures or crowns are created.
The teamwork continues long after the implant and crown have been placed. Follow-up examinations with the oral and maxillofacial surgeon and restorative dentist are critical, and progress is carefully charted. Both the oral and maxillofacial surgeon and the restorative dentist continue to work together to provide the highest level of aftercare.
Are You a Candidate for Dental Implants?
Whether you are a young, middle-aged or older adult; whether you need to replace one tooth, several teeth, or all your teeth, there is a dental implant solution for you. With the exception of growing children, dental implants are the solution of choice for people of all ages, even those with the following health concerns:
- Existing Medical Conditions. If you can have routine dental treatment, you can generally have an implant placed. While precautions are advisable for certain conditions, patients with such chronic diseases as high blood pressure and diabetes are usually successful candidates for dental implant treatment.
- Gum Disease or Problem Teeth. Almost all implants placed in patients who have lost their teeth to periodontal disease or decay have been successful.
- Currently Wearing Partials or Dentures. Implants can replace removable bridges or dentures, or they can be used to stabilize and secure the denture, making it much more comfortable.
- Smokers. Although smoking lowers the success rate of implants, it doesn't eliminate the possibility of getting them.
- Bone Loss. Bone loss is not uncommon for people who have lost teeth or had periodontal disease. Oral and maxillofacial surgeons are trained and experienced in grafting bone to safely and permanently secure the implant.
Implant tooth replacement in children is usually deferred until their jaw growth is complete. There are, however, some instances when a dental implant may be appropriate, such as when it is part of the child's orthodontic treatment plan. Your family dentist or orthodontist can guide you in this instance.