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What Occurs In Your Mouth During A Dental Care Examination

During a dentistry examination, the dentist examines the mouth mucosa (soft tissues) for any abnormalities or pathology (including oral cancer), the teeth for tooth decay (dental caries) or defects, the gum tissues for periodontal (gum) disease, the neck for swollen lymph nodes, the amount of plaque, tartar (dental calculus), and debris on teeth, as well as the need to replace any missing teeth or dental prostheses.

The dental examination begins with a complete dental care and medical history, including medications the patient currently is taking. The skin of the face and neck is examined for any abnormalities, especially pigment changes. The lymph nodes in front and behind the ears, under the floor of the mouth and chin, and the midline of the neck, sides, and back of the neck are palpated to determine if any swelling or tenderness is present.

Inside of the mouth, the lips, cheeks, gums, and roof of the mouth are inspected and palpated. During this process, the tip of the tongue is placed on the roof of the mouth just behind the upper teeth for inspection of the front floor of the mouth and sides of the tongue.

The back floor of the mouth, the area behind the lower wisdom teeth, and the back sides of the tongue are inspected by grasping the tip of the tongue with a small gauze sponge and pulling the tongue forward and toward the opposite side of the mouth.

To inspect the back of the throat, soft palate, and tonsil area (sides of the throat), the tongue is depressed with a dental mirror or tongue blade and then a deep breath is taken by the patient.

To detect swelling on the floor of the mouth, the area inside the mouth is felt with the finger of one hand while a finger of the other hand feels below the chin. Salivary gland enlargement, saliva flow, or xerostomia (dry mouth) are determined by milking the major salivary glands to assess the quantity and consistency of saliva.

Today's dentist has many analytic tools available to pinpoint dental and oral diseases. The basic tools are the dental instruments, lights, and radiographs (X-rays). Depending upon the dentist and the individual's dental needs, additional diagnostic tests are available. Testing for essential proteins and buffering capacity can evaluate the protective ability of saliva.

To determine mouth caries risks, microbiological testing of saliva can measure the level of caries-producing organisms. Periodontal susceptibility tests, which test for the DNA of gum disease-producing organisms, can be performed to assess an individual's risk for gum disease.

If removable dentures are present, they are checked for bite, retention, stability, and overall fit. Dental impressions or models also may be taken to study the mouth and tooth structures to initiate fabrication of prostheses. Photographs may be exposed for a variety of reasons, including before and after treatment comparisons.

The level of oral hygiene and home care practices are assessed and reviewed. Recommendations for home care devices and products may be made. Instruction and methods for maintaining a good oral hygiene regimen can also take place.

Once basic information about oral health status is gathered, the dentist will be better able to discuss dental treatment alternatives that are available.

By Denise J. Fedele, DMD, MS

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Your Mouth During Oral Cancer Treatment

Each year, many people are treated for oral cancer. Chemotherapy treatments for cancer and radiation treatment for head and neck cancer often cause oral complications. About half of chemotherapy patients experience oral complications, particularly those being treated for leukemia and those who receive bone marrow transplants.

These oral cancer complications significantly decrease quality of life and can lead to serious systemic problems, complications, septicemia, eating difficulty, nutritional deficiencies, and dehydration. The following are descriptions of oral problems that can occur with cancer treatment:

Infections of the oral cavity can be caused by the usual organisms found in the mouth or by opportunistic organisms not usually found in the mouth. These infections can lead to serious systemic infections. The risk is higher for individuals who have reduced numbers of circulating white blood cells (leukopenia).

Candidiasis is the overgrowth of candida albicans, a fungal organism that normally is found in the mouth.

Musositis is painful and causes problems with eating and speaking. Soft tissues are red, ulcerated, and inflamed. The oral cavity is susceptible to mucositis because of its high cell turnover.

Hemorrhage or bleeding of the oral cavity can occur when clotting factors are affected and during bone marrow suppression.

Xerostomia or dry mouth is associated with decreased, sticky, or thickened saliva. Dry soft tissues are more susceptible to pain, infection, and irritation. Dry mouth is associated with a high number of dental caries.

Altered taste or loss of taste is common and is related to the reduced saliva volume, as well as its altered consistency.

Developmental abnormalities such as altered craniofacial growth and dental/tooth deformities occur with cancer treatment during developmental periods.

Trismus, fibrosis, and scarring of the chewing muscles and temporomandibular joint (TMJ, the joint that moves the lower jaw) that were in the radiation field may make opening the mouth difficult and limited.

Osteoradionecrosis (soft tissue and bone necrosis) can be spontaneous or secondary to trauma, extractions, or dental prostheses. The radiated tissues have reduced blood vessels, decreased cells, and decreased oxygen that predisposes the tissues for years after the radiation therapy to this compromised state that makes oral surgical procedures risky. Therefore, prior to and post oral surgery, patients who have had head and neck radiation may require hyperbaric oxygen treatments and antibiotic therapy to prevent osteoradionecrosis.

Radiation dental caries is a term used for rapid tooth demineralization and severe cavities that occur with head and neck radiation, particularly when the parotid, submandibular, submental, or submaxillary salivary glands are in the radiation field.

Pain accompanies oral infection, mucositis, xerostomia, trismus, dental caries, osteoradionecrosis, candidiasis and dental caries.

To reduce risk for oral cancer complications, a dentist should perform a pretreatment oral examination, as well as necessary dental treatment before initiating chemotherapy or head and neck radiation. It is important that the dentist consult with the physician or oncologist before dental treatment because people who are about to undergo treatments for cancer may be immunosuppressed or thrombocytopenic (blood clotting disorder).

The goals of the dental examination and dental treatment are to eliminate existing or potential oral infection and potential for trauma. Infection, potential infection, and trauma can be associated with soft tissue lesions, decayed or broken teeth, dental implants with poor prognosis, periodontal disease, and poorly fitting full or partial dentures. The oral examination consists of hard and soft tissue examinations, periodontal assessment, and necessary radiographs. Since long-term effects of head and neck cancer radiation treatments will be harmful to the bone in the radiated area (field), patients who undergo head and neck radiation treatment should have teeth and implants with potential for future problems considered for extraction before the cancer treatment begins.

The patient's ability and interest in maintaining oral health, as well as the ability to comply with an oral cancer prevention routine, should be factors that are considered as the dentist develops and discusses dental treatment recommendations with the patient.

By Denise J. Fedele, DMD, MS