. Dental electro-therapeutics. ly the radicular, in contradistinction to the follicular;it occurs oftener in the superior than in the inferior cysts are generally of traumatic origin and inmany cases the age of the patient at the time of the acci-dent may be fairly accurately determined by the degree ofarrested development of the root and the size of the canal,. THE X-RAYS OR RONTGEN RAYS 197 if the accident occurred at a time before the root of thetooth in question was fully developed. The approximate date of lesions of a traumatic nature,resulting in pyorrhoea or absorption
. Dental electro-therapeutics. ly the radicular, in contradistinction to the follicular;it occurs oftener in the superior than in the inferior cysts are generally of traumatic origin and inmany cases the age of the patient at the time of the acci-dent may be fairly accurately determined by the degree ofarrested development of the root and the size of the canal,. THE X-RAYS OR RONTGEN RAYS 197 if the accident occurred at a time before the root of thetooth in question was fully developed. The approximate date of lesions of a traumatic nature,resulting in pyorrhoea or absorption may be establishedfairly conclusively by the x-ray. Fig. 115 illustrates acase of arrested development of the right central incisorwhich shows the flaring of the canal at the apex, causingslight hemorrhage upon insertion of the broach and inter-fering with the stopping of the canal with age of the patient at the time of the accident, accordingto her statement, was verified by the radiograph. Fig. 115 Fig. 116.
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