. Tumours, innocent and malignant; their clinical characters and appropriate treatment. ngation of the enamel-organ which precedes and determines theformation and shape of the dentine and theroot of the tooth. I have had several dental cysts ex-amined microscopically, and can confirm Turners observa-tion that they possess an epithelial lining. The epitheliumis usually stratified, but columnar cells occur, especially incysts associated Avith the first permanent molar. The restriction of these cysts to the roots of thepermanent teeth is explained by the fact that the rootsof temporary teeth as A
. Tumours, innocent and malignant; their clinical characters and appropriate treatment. ngation of the enamel-organ which precedes and determines theformation and shape of the dentine and theroot of the tooth. I have had several dental cysts ex-amined microscopically, and can confirm Turners observa-tion that they possess an epithelial lining. The epitheliumis usually stratified, but columnar cells occur, especially incysts associated Avith the first permanent molar. The restriction of these cysts to the roots of thepermanent teeth is explained by the fact that the rootsof temporary teeth as Avell as their alveoli are absorbed. The majority of dental cysts are met with accidentallyin extracting dead permanent teeth or their roots. Largespecimens, however, resemble in their clinical signs tumoursof the jaws or antrum (Fig. 137). Even cysts of the sizeof a doves egg in relation with the lower molars and pre-molars will so expand the outer plate of the mandible asto yield parchment-crackling on being firmly pressed withthe finger. When a painless smooth tumour of the jaw is. Fig. 136.—Dentalcysts at the roots ofa dead lower molar. 232 ODONTOMAS associated with a carious tooth, especially of long standing,a dental cyst should be borne in mind. The association otthese cysts with carious and dead teeth is sufficient to pre-vent them from beinsf mistaken for follicular odontomes.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectneoplasms, bookyear19
