. Dental electro-therapeutics. Fig. 108.—Dentigerous cyst in mandible containing two bisouspids whichwere subsequently removed. Radiograph also shows impacted second molarand wisdom tooth occupying a horizontal Fig. 109.—Showing arrested development of root. The approximate date of lesions of a traumatic nature,resulting in pyorrhea or absorption may be established fairlyconclusively by the .r-rays. Fig. 109 illustrates a case of 186 THE X-RAYS OR RONTGEN RAYS arrested development of the right central incisor which showsthe flaring of the canal at the apex, causing slight hemorrhage
. Dental electro-therapeutics. Fig. 108.—Dentigerous cyst in mandible containing two bisouspids whichwere subsequently removed. Radiograph also shows impacted second molarand wisdom tooth occupying a horizontal Fig. 109.—Showing arrested development of root. The approximate date of lesions of a traumatic nature,resulting in pyorrhea or absorption may be established fairlyconclusively by the .r-rays. Fig. 109 illustrates a case of 186 THE X-RAYS OR RONTGEN RAYS arrested development of the right central incisor which showsthe flaring of the canal at the apex, causing slight hemorrhageupon insertion of the broach and interfering with the stoppingof the canal with gutta-percha. The age of the patient at thetime of the accident, according to her statement, was verifiedby the radiograph.
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