Abfraction: What it is, causes, symptoms, and treatment

Introduction

Abfraction is a dental condition involving the loss of tooth tissue in the cervical region, near the gum line, without the involvement of caries. These lesions typically have a wedge shape and can affect dental aesthetics and function. Understanding the causes, diagnosis, and treatment options is crucial for effective dental care.

Etiology of Abfraction

Abfraction is a non-carious cervical lesion (NCCL) characterized by the loss of tooth tissue in the cervical region of the teeth. Its etiology is multifactorial, involving biomechanical, chemical, and biological factors. Occlusal forces can create microfractures in the enamel and dentin along the cervical area, predisposing it to erosion and abrasion. Furthermore, the interaction between chemical factors, such as acid exposure, and biological factors, such as saliva composition, can contribute to the development of these lesions.

Diagnosis

The diagnosis of abfraction is based on clinical and radiographic evaluation. Clinically, abfraction lesions present as wedge-shaped defects in the cervical region of the teeth, with defined internal and external angles. It is important to differentiate these lesions from other NCCLs, such as erosion and abrasion, to establish an appropriate treatment plan.

Treatment Options

Treatment for abfraction lesions depends on the severity of the lesion and the patient's symptoms. In asymptomatic cases, where tooth vitality and function are not compromised, regular monitoring is recommended before considering invasive interventions. For lesions associated with hypersensitivity or aesthetic concerns, treatment options may include:

• Non-invasive therapies: Use of desensitizing agents and modification of occlusal habits.

• Adhesive restorations: Application of composite materials to restore tooth shape and function.

• Occlusal adjustments: Correction of premature occlusal contacts to reduce forces contributing to lesion formation.

It is essential to address the underlying etiological factors to prevent the progression of abfraction lesions.

Conclusion

Abfraction is a complex dental condition with a multifactorial etiology. Accurate diagnosis and an understanding of risk factors are crucial for determining appropriate treatment. Treatment options range from non-invasive interventions to restorative procedures, depending on the severity of the lesion and the patient's symptoms.

Legal Notice and Disclaimer

This article is part of Onak's medical term dictionary. The information provided is for educational purposes and does not substitute professional advice. Onak is not responsible for actions taken based on this content. It is recommended to consult a dental health professional for personalized advice.

Bibliography

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2. Sarode GS, Sarode SC. "Abfraction: A review." J Oral Maxillofac Pathol. 2013 May;17(2):222-7. Available at: https://pubmed.ncbi.nlm.nih.gov/24250083/

3. Badavannavar AN, et al. "Abfraction: Etiopathogenesis, clinical aspect, and diagnostic-treatment modalities: A review." Indian J Dent Res. 2020 Mar-Apr;31(2):305-311. Available at: https://pubmed.ncbi.nlm.nih.gov/32436913/