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Tooth Extraction – Procedure, Reasons & Aftercare

Tooth extraction is a dental procedure in which a tooth is removed from its socket in the jawbone. It is performed in cases of severe decay, infection, or overcrowding.

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Things worth knowing about "Tooth extraction"

Tooth extraction is a dental procedure in which a tooth is removed from its socket in the jawbone. It is performed in cases of severe decay, infection, or overcrowding.

What is a Tooth Extraction?

A tooth extraction is a dental procedure in which a tooth is completely removed from its socket (alveolus) in the jawbone. It is one of the most common outpatient procedures in dentistry and is typically performed under local anaesthesia. In certain cases, such as for highly anxious patients or complex surgical situations, general anaesthesia or sedation may be used instead.

Indications – When is a Tooth Extraction Necessary?

A tooth extraction is recommended when a tooth can no longer be preserved or poses a risk to oral health. Common reasons include:

Severe tooth decay (caries): When decay has progressed so far that a filling or root canal treatment is no longer viable.
Advanced periodontitis: Significant bone loss due to gum disease can make a tooth too unstable to save.
Fractured tooth or root: A broken tooth or root that cannot be restored.
Wisdom tooth problems: Wisdom teeth are frequently removed when they are impacted (unable to fully erupt), cause pain, or threaten neighbouring teeth.
Orthodontic treatment: In cases of dental overcrowding, extraction may be necessary to create space for proper alignment.
Infection or abscess: When an infection cannot be resolved with antibiotics or root canal therapy.
Before radiation therapy: Extractions in the jaw area may be required prior to radiotherapy to prevent later complications.

Procedure

Preparation

Before the procedure, a thorough examination is carried out, usually supplemented by an X-ray of the affected tooth and surrounding bone. The dentist or oral surgeon discusses any existing medications, medical conditions (e.g. bleeding disorders, heart disease), and allergies with the patient. Informed consent is obtained and the planned procedure is explained in detail.

Performing the Extraction

The affected area is numbed using a local anaesthetic (usually lidocaine). Once the area is fully anaesthetised, the tooth is loosened with specialised instruments (dental forceps and elevators) and removed from its socket. For deeply rooted, fractured, or impacted teeth (such as wisdom teeth), a surgical incision into the gum tissue may be required. This is referred to as a surgical extraction or surgical odontectomy.

Aftercare

After the extraction, the patient bites down on a gauze pad to control bleeding. The dentist provides post-operative instructions, which typically include:

Avoid rinsing or spitting forcefully for the first few hours
Eat soft foods and avoid hot beverages
Refrain from smoking, as it impairs healing
Take pain relief medication (e.g. ibuprofen) as recommended
Attend a follow-up appointment to monitor healing

Possible Risks and Complications

Tooth extraction is generally a safe procedure, but the following complications may occur:

Post-operative bleeding: In rare cases, the extraction site may bleed longer than expected.
Dry socket (alveolar osteitis): If the blood clot in the socket dissolves or is dislodged, a painful inflammation can develop.
Infection: Bacteria may enter the open wound and cause an infection.
Nerve injury: Particularly with wisdom tooth extractions, there is a small risk of temporary or permanent numbness in the chin, lips, or tongue.
Jaw bone damage: Rare, but possible in complex cases.
Swelling and bruising: Common after more extensive procedures, typically resolving within a few days.

Healing Process

After a tooth extraction, the wound goes through several stages of healing. The blood clot that forms in the socket is essential for recovery and should not be disturbed. Soft tissue healing typically takes 1–2 weeks, while complete bone remodelling may take several months. A follow-up visit to the dentist is usually recommended within a few days of the procedure.

Alternatives to Tooth Extraction

Before proceeding with an extraction, alternative treatment options should always be considered, including:

Root canal treatment: Removal of infected pulp tissue to preserve the tooth
Periodontal treatment: Addressing gum disease to stabilise the tooth
Dental crown or filling: Restoration of damaged tooth structure

Extraction should always be considered a last resort when preserving the tooth is no longer possible or clinically appropriate.

References

Peterson LJ et al. – Contemporary Oral and Maxillofacial Surgery, 6th Edition. Elsevier (2018)
World Health Organization (WHO) – Oral Health: Key Facts. Available at: https://www.who.int/news-room/fact-sheets/detail/oral-health (2023)
Hupp JR, Ellis E, Tucker MR – Contemporary Oral and Maxillofacial Surgery. Mosby Elsevier (2019)

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