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    Hershey Dentist – Bhargav Patel, DMD - Family, Cosmetic and Implant Dentistry

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    A dental extraction (also referred to as exodontia) is the removal of a tooth from the mouth. Extractions are performed for a wide variety of reasons, including tooth decay that has destroyed enough tooth structure to prevent restoration. Extractions of impacted or problematic wisdom teeth are routinely performed, as are extractions of some permanent teeth to make space for orthodontic treatment.

    Reasons for tooth extraction

    The most common reason for extraction is tooth damage due to breakage or decay. There are additional reasons for tooth extraction:

    • Severe tooth decay or infection. Despite the reduction in the worldwide prevalence of dental caries, it still is the most common reason for extraction of (non-third molar) teeth with up to two  thirds of extractions.
    • Extra teeth which are blocking other teeth from coming in.
    • Severe gum disease which may affect the supporting tissues and bone structures of teeth.
    • In preparation for orthodontic treatment (braces)
    • Teeth in the fracture line
    • Fractured teeth.
    • Insufficient space for wisdom teeth (impacted third molars). Although many dentists remove asymptomatic impacted third molars, American, as well as British Health Authorities, recommended against this routine procedure unless there evidence of disease in the impacted tooth or the near environment.
    • Receiving radiation to the head and neck may require extraction of teeth in the field of radiation.

    Types of Dental Extraction

    Extractions are often categorized as “simple” or “surgical.”
    Simple extractions are performed on teeth that are visible in the mouth, usually under local anesthetic, and require only the use of instruments to elevate and/or grasp the visible portion of the tooth. Typically the tooth is lifted using an elevator, and using dental forceps, rocked back and forth until the periodontal ligament has been sufficiently broken, and the supporting alveolar bone has been adequately widened to make the tooth loose enough to remove. Typically, when teeth are removed with forceps, slow, steady pressure is applied with controlled force.

    Surgical extractions involve the removal of teeth that cannot be easily accessed, either because they have broken under the gum line or because they have not erupted fully. Surgical extractions almost always require an incision. In a surgical extraction, the doctor may elevate the soft tissues covering the tooth and bone,and may also remove some of the overlying and/or surrounding bone tissue with a drill or osteotome. Frequently, the tooth may be split into multiple pieces to facilitate its removal.

    When is tooth extraction necessary?

    • In the case of illnesses involving pain and extended inflammations, if there is no other solution.
    • Because of the prolonged inflammation, the surrounding tissues have to be protected, along with the other teeth
    • In case the disease is not painful; but the broken, loosened tooth cannot be used for further tooth replacement
    • Fortunately, most teeth deemed irredeemable by the patient, can still be saved

    Extracting wisdom teeth

    Before extracting wisdom teeth, the doctor is informed of the condition of the tooth, and the surrounding anatomical parts by a panorama X-ray.

    A wisdom teeth operation may involve a flap establishment or the unification of the scar margins with stitches. Of course, this is completely painless. The benefit of the adequate size of sawing pin is that, it can be removed without pain in the end that it almost slips out of its place.


    Examples of alveolar osteitis (dry socket) following lower third molar (wisdom tooth) extraction; six days post-surgery.

    1. Infection: Although rare, it does occur on occasion. The dentist may opt to prescribe antibiotics, pre- and/or postoperatively if he/she determines the patient to be at risk.

    2. Prolonged bleeding: The dentist has a variety of means at his/her disposal to address bleeding; however, small amounts of blood mixed in the saliva after extractions are normal–even up to 72 hours after extraction.

    3. Swelling: Often dictated by the amount of surgery performed to extract a tooth (e.g. surgical insult to the tissues both hard and soft surrounding a tooth). Generally, when a surgical flap must be elevated (i.e. and the periosteum covering the bone is thus injured), minor to moderate swelling will occur. A poorly-cut soft tissue flap, for instance, where the periosteum is torn off rather than cleanly elevated off the underlying bone, will often increase such swelling. Similarly, when bone must be removed using a drill, more swelling is likely to occur.

    4. Sinus exposure and oral-antral communication: This can occur when extracting upper molars (and in some patients, upper premolars). The maxillary sinus sits right above the roots of maxillary molars and premolars. There is a bony floor of the sinus dividing the tooth socket from the sinus itself. This bone can range from thick to thin , tooth to tooth ,and patient to patient. In some cases, it is absent, and the root is in fact in the sinus. At other times, this bone may be removed with the tooth, or may be perforated during surgical extractions. The doctor typically mentions this risk to patients, based on an evaluation of radiographs showing the relationship of the tooth to the sinus. The sinus cavity is lined with a membrane called the Sniderian membrane, which may or may not be perforated. If this membrane is exposed after an extraction, but remains intact, a “sinus exposed” has occurred. If the membrane is perforated; however, it is a “sinus communication.” These two conditions are treated differently. In the event of a sinus communication, the dentist may decide to let it heal on its own or may need to surgically obtain primary closure–depending on the size of the exposure as well as the likelihood of the patient to heal. In both cases, a resorbable material called “gel foam” is typically placed in the extraction site to promote clotting, and serve as a framework for granulation tissue to accumulate. Patients are typically provided with prescriptions for antibiotics that cover sinus bacterial flora, decongestants, as well as precise instructions to follow during the healing period.

    5. Nerve injury: This is primarily an issue with extraction of third molars. However, it can technically occur with the extraction of any tooth should the nerve be near to the surgical site. Two nerves are typically of concern, and are found in duplicate (one left and one right side): 1. the inferior alveolar nerve, which enters the mandible at the mandibular foramen, and exits the mandible at the sides of the chin from the mental foramen. This nerve supplies sensation to the lower teeth on the right or left half of the dental arch, as well as a sense of touch to the right or left half of the chin and lower lip. 2. The lingual nerve (one right and one left side), which branches off the mandibular branches of the trigeminal nerve, and courses just inside the jaw bone, entering the tongue. It supplies sense of touch and taste to the right and left half of the anterior 2/3 of the tongue as well as the lingual gingiva (i.e. the gums on the inside surface of the dental arch). Such injuries can occur while lifting teeth (typically the inferior alveolar), but are most commonly caused by inadvertent damage with a surgical drill. Such injuries are rare and are usually temporary, but depending on the type of injury (i.e. Seddon classification: neuropraxia, axonotmesis, & neurotmesis), It can be prolonged or even permanent.

    6. Displacement of tooth or part of the tooth into the maxillary sinus (upper teeth only). In such cases, almost always, the tooth or tooth fragment must be retrieved. In some cases, the sinus cavity can be irrigated with saline (antral lavage) and the tooth fragment may be brought back to the site of the opening through which it entered the sinus and may be retrievable. At other times, a window must be made into the sinus in the Canine fossa–a procedure referred to as “Caldwell luc.”

    7. Alveolar osteitis is a painful phenomenon that mostly occurs  few days following the removal of mandibular (lower) wisdom teeth. It is commonly believed that it occurs because the blood clot within the healing tooth extraction site is disrupted. More likely, alveolar osteitis is a phenomenon of painful inflammation within the empty tooth socket because of the relatively poor blood supply to this area of the mandible (which explains why dry socket is usually not experienced in other parts of the jaws). Inflamed alveolar bone, unprotected and exposed to the oral environment after tooth extraction, can become packed with food and debris. A dry socket typically presents  a sharp and sudden increase in pain commencing 2–5 days, following the extraction of a mandibular molar, most commonly the third molar. This is often extremely unpleasant for the patient; the only symptom of dry socket is pain, which often radiates up and down the head and neck. A dry socket is not an infection, and is not directly associated with swelling because it occurs entirely within bone — it is a phenomenon of inflammation within the bony lining of an empty tooth socket. Because dry socket is not an infection, the use of antibiotics has no effect on its rate of occurrence. The risk factor for alveolar osteitis can dramatically increase with smoking after an extraction.

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    575 E.Chocolate Ave
    HERSHEY, PA 17033

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