. The science and practice of dental surgery. ulty. The degreeof malformation nuist l)c regarded as thedetermining factor. Specimens containingseveral denticles exist, but the majority appearto have arisen from two tooth-germs. Thedeciding factor is the presence of a pulp-cavitycorresponding with each constituent denticle. 758 Tlie presence of a coronal and radicular partof one (or all) of the denticles is almost constant,whilst in addition a calcified mass, which maybe so irregular as to have the characteristics ofa complex composite odontome, is also found. When the tissues are examined micr
. The science and practice of dental surgery. ulty. The degreeof malformation nuist l)c regarded as thedetermining factor. Specimens containingseveral denticles exist, but the majority appearto have arisen from two tooth-germs. Thedeciding factor is the presence of a pulp-cavitycorresponding with each constituent denticle. 758 Tlie presence of a coronal and radicular partof one (or all) of the denticles is almost constant,whilst in addition a calcified mass, which maybe so irregular as to have the characteristics ofa complex composite odontome, is also found. When the tissues are examined microscopic-ally the arrangement is found to be mostvariable ; in some parts the tissues appear to bethose of a normal tooth, whilst in other partsthey are most irregular and complex. These odontomes are found more frequentlyin the anterior part of the mouth. Clinicallythey do not present any special feature, and \\ill The arrangement of the tissues of the wallsresembles the normal, but the pulp-chamberis modified by the presence of a small den-. Fig. 983.—A section of a geminated compositeodontome. {From a camera lucida drawing byD. P. Gabell.) {iluseum of the Royal DentalHospital of London.) The roots of tlie molar appear distinct. The complexcalcified mass is closely attached to the tooth. E, Enamel. D, Dentine. C, Cementimi. M, Irregu-larly calcified material. probably need attention only if they are of alarge size. 4. Gestant Composite Odontomes Gestant conijiosite odontomes are those com-posite odontomes in which a denticle is containedwithin, or surrounded by, the walls of a tooth. These odontomes have been recognized byseveral observers. Ai\ mvestigation into theirmode of development was made by JoseiJhArkovy (2); he speaks of them as odontomainterum . The tooth may or may not presentan external deformity, but the normal form isusually altered in such a manner as to sug-gest an irregular arrangement of the tissues.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
