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https://doi.org/10.1111/odi.13770
Copy DOIJournal: Oral Diseases | Publication Date: Jan 21, 2021 |
Citations: 8 | License type: other-oa |
The merging of ameloblastoma (AM) with mural unicystic ameloblastoma (UAM-M) was suggested by the 2017 WHO based on similar treatment needs. In an international multicenter study, we investigated the characteristics of their merged product (merged-AM) and raised the possibility of unifying AM and UAM (total-AM). AM and UAM (luminal/intraluminal/mural), separate and combined, were analyzed for demographic/clinical/radiological features. ANOVA and chi-square tests were followed by univariate and multivariate analyses, and significance was set at p<.05. The patients' mean age was 39.6±20.3years in merged-AM (147 AM, 76 UAM-M), 45.1±19.4years in AM (p=.009). Merged-AM comprised 51.3% multilocular/48.7% unilocular tumors, AM comprised 72.5%/27.5%, respectively (p<.001). Merged-AM was associated with impacted teeth in 30.8%, AM in 18% (p=.023). The probability of merged-AM for multilocularity increased by 2.4% per year of age (95%CI 0.6-4.2, p=.009). Association with impacted teeth decreased by 7.9% per year of age (95%CI 1.9-14.39, p=.009). Merged-AM did not differ from total-AM (p>.05). Merged-AM partially differed from AM, but differences appeared to diminish in an age/time-wise manner. Merged-AM and total-AM were nearly indistinguishable. Therefore, AM and UAM may be considered a continuous spectrum of one type of tumor, further necessitating revision of the treatment approaches.
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