. Interpretation of dental & maxillary roentgenograms . Fig. 249.—Retained piece of root of lower left first molar, which gave rise tochronic sinus with purulent discharge beneath jaw, extending over a period of years. 140 I INTERPRETATION OF ROE XT(! !•: X()<; It AM S. Fig. 250.—Root of upper right first molar lost in maxillary sinus during at-tempted extraction. A plate should always be made in a case of this kind, the twosides of the face being made to overlap as much as possible, so that the maxillarysinus will not be obscured by the bone of the opposite side.

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Keywords: ., bookcentury1900, bookdecade1910, bookidinte, booksubjectdentistry