Introduction:

Invasive cervical resorption (ICR) is a clinical term that describes a rare form of external root resorption. There is scarce updated literature on ICR case reports. The purpose of this review was to determine the clinical characteristics, imaging classification, treatment, and follow-up of ICR case reports published in the period 2018-2022.

Material and methods:

A review of clinical cases on RCI was carried out in PubMed, Scopus and Web of Science, relating the free terms "cervical invasive resorption", "external cervical tooth resorption" and the MeSH term "case reports".

Results:

There were 37 patients and 39 teeth throughout 23 articles. The age range was 9-68 years, with 54% women and 46% men. The potential predisposing factor for RCI was undefined in 57% of the cases. Most of affected teeth (45%) were maxillary central incisors. According to Heithersay’s classification, 82% of the teeth were in classes 3 and 4. According to Patel et al.’s classification, most of the affected teeth (35.9%) were in classes 2Bp and 3Bp. The usual treatment for ICR was endodontics, with or without a surgical approach. 87% of participants were followed up, which was for at least 24 months in most cases (38%).

Conclusion:

It was found that RCI occurs most frequently between the ages of 11 and 30, regardless of gender. Potential predisposing factors such as trauma and orthodontics were identified. Preference for upper central incisors was found. Heithersay’s classification was the most commonly used to describe RCI.

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