Classification on Odontogenic Tumors a Suggestion

Abstract

Odontogenic tuinors should he defined :I Y i 1 1 neopl:isnis originating from epi thelin with the potentiality to differenti:lte into odontogenic epithelia, i.e. producing or inducing dental structures or ( 2 ) neoplasms originating froni the connecti\ e tissue o f the I)eriotlontal iiienihr:ine, which differs in some respects froin connective tissue in other p:irts of the hody4. ILIost otiontogenic neoplasin.; iniit:ite w i n e stage or other in the norninl developiiient of teeth and especi:illg the inductive effect of anielohl :I s t s on t 17 e ;id j :ic e n t in e senr 11 y 111 :I 1 c el 1 s to d iff ere n ti :I t e into odontob1:ists :ind also the inductive effect of the dentin ~11)on the :meloblnsts to forin enamel. Therefore, :in :ittempt inay he iiiade to classitg these tuinors iiiainlg :iccording to enihryologic princ i p 1 e s . P I < EVI0 r s CIA AS s I F IC AT ION s One of the first :itteiiipLs t o c1:issify tnniors originating fronl dentnl tissues was ni:ide hy Broctr in 1867'. He based his classification upon the stage of developnient which the tooth in question hntl reached when :1bnorii1:11 growth commenced. In 1887 Bl (in tl-Sir t ton 2 1) r 01) o sed :i r 1 a s sil ic :it i o n hi set1 upon t h e n :I t u re 'This study I Y~S supported by ii grant from the 1)anisli State Research Fountlntioii. Acta Odontol Scand Downloaded from informahealthcare.com by Mcgill University on 11/18/14 For personal use only. Acta Odontol Scand Downloaded from informahealthcare.com by Mcgill University on 11/18/14 For personal use only.

The Calcifying Epithelial Odontogenic Tumour

“…In one, however, a diffuse enlargemnent developed 2 months after operation (Pindborg, 1958). In a fourth case swelling developed shortly after the removal of an embedded tooth at the age of 36 years, but it took another 6 years to cause discomfort and operation then was followed by recurrence 6 months later.…”

“…In three of the reported cases the lesion was discovered on radiographic examination before obvious signs had appeared (Stoopack, 1957;Pindborg, 1958;Chaudhry, Holte and Vickers, 1962). In one, however, a diffuse enlargemnent developed 2 months after operation (Pindborg, 1958).…”

“…Received for publication Novenmber 23, 1964 THE descriptive title of calcifying epithelial odontogenic tumour was given to this unusual tumour by Pindborg (1958). He described 3 cases and collected another 4 from the literature which had been variously described as adenoid adamantoblastoma (Thoma and Goldman, 1946), ameloblastoma of unusual type with calcification (Ivy, 1948), malignant odontoma (Wunderer, 1953), and cystic complex odontoma (Stoopack, 1957).…”

“…Kramer (1963) mentions that he has seen 3 cases, but gives no details. Pindborg (1958) and Kramer (1963) state that the small number of recorded cases may be due to the fact that many cases may not be published, while others may have been described under some other name. Since only one other case has been documented in the five years since Pindborg's report was published the lesion may be considered one of the rarest odontogenic epithelial tumours and an extremely rare complication of failure of eruption of a permanent tooth.…”

“…In a fourth case swelling developed shortly after the removal of an embedded tooth at the age of 36 years, but it took another 6 years to cause discomfort and operation then was followed by recurrence 6 months later. The patient was operated oni again and the tumour recurred once more after 11 years (Pindborg, 1958). Thus, because of its slow growth, recurrence of this tumour remains a possibility for many years.…”