Tooth mobility

An overview of tooth mobility, its causes, diagnosis, and treatment

Tooth Mobility
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Tooth mobility refers to the movement of a tooth within its socket in response to applied forces. It is a common clinical finding in dentistry and can be indicative of underlying periodontal disease or other dental conditions.

Causes

Tooth mobility can be caused by a variety of factors, including:

• Periodontal disease: Inflammation and destruction of the supporting structures of the teeth, such as the periodontal ligament and alveolar bone, can lead to increased mobility.
• Trauma: Physical injury to the teeth or supporting structures can result in mobility.
• Occlusal trauma: Excessive forces from biting or grinding can cause mobility.
• Orthodontic treatment: Movement of teeth during orthodontic procedures can temporarily increase mobility.
• Root resorption: Loss of tooth structure from the root can lead to mobility.

Diagnosis

Diagnosis of tooth mobility involves clinical examination and may include:

• Visual inspection and palpation to assess the degree of mobility.
• Use of a periodontal probe to measure pocket depths and assess attachment loss.
• Radiographic imaging to evaluate bone levels and root structure.

Tooth mobility is often classified using the Miller Classification System:

• Class I: Slight mobility, up to 1 mm of horizontal movement.
• Class II: Moderate mobility, greater than 1 mm of horizontal movement.
• Class III: Severe mobility, greater than 1 mm of horizontal and vertical movement.

Treatment

The treatment of tooth mobility depends on the underlying cause:

• For periodontal disease, treatment may include scaling and root planing, periodontal surgery, and improved oral hygiene.
• Occlusal adjustment or the use of a night guard may be recommended for occlusal trauma.
• Splinting of mobile teeth can provide temporary stabilization.
• In cases of severe mobility, extraction may be necessary.

Prognosis

The prognosis for a tooth with mobility depends on the cause and severity of the condition. Early intervention and treatment of underlying causes can improve outcomes.

Also see

• Periodontitis
• Gingivitis
• Dental trauma
• Orthodontics
• Occlusion (dentistry)