A case of multiple idiopathic external root resorption: A 6-year follow-up study

Human and Feline Invasive Cervical Resorptions: The Missing Link?—Presentation of Four Cases

“…This is in line with other reports on cases with mICR that found resorbed teeth to be vital by pulp testing (7,9). The histologic evaluation described above in the first of the 4 case reports clearly documented that the pulp might remain free of inflammation and internal resorptive activity even in an advanced stage of ICR.…”

“…Whereas single ICR has been associated mainly with dental trauma, orthodontics, intracoronal bleaching of teeth, and dentoalveolar surgery (5), the etiology of mICR remains obscure (6,7).…”

“…Bitewing radiographs taken in August 2004 showed no resorptive lesions. The examination with periapical radiographs in May 2007 showed multiple cervical lesions in teeth #5, 6,7,8,9,10,26,27,28,29, and 30. The attending dentist suggested either to wait and observe the situation or to remove all affected teeth.…”

“…Although the study of Heithersay (5) and many case reports have addressed ICR associated with a single tooth or with up to 3 teeth, only a few cases with multiple invasive cervical resorption (mICR) have been described (6)(7)(8)(9). Liang et al (6) presented a systematic review of cases with idiopathic mICR, adding 4 cases to a list of 14 previously presented.…”

“…It seems unlikely that the pathogenesis of ICR in humans and of FORL in the feline population, respectively, would be substantially different. Analysis of the dental literature shows an increase in the number of case reports dealing with mICR since 1986 (6,7). It is also interesting that FORL was rarely documented in the veterinary literature before the 1980s (24).…”