. Principles and practice of filling teeth. the handle nearesthim, and the ends of all three are turned so as to look somewhat inthe direction of the claws. Thus the only finger not touching theforceps is the little finger, and the principal grasping force isexerted by the index finger and the thumb, while the lifting forcein carrying the clamp to place is exerted by the third finger as thehandle lies across it. (Fig. 28.) In adjusting the dam to the upper teeth the patients headshould be tipped back so as to expose these teeth as perfectly aspossible, and for the right side of the mouth the o
. Principles and practice of filling teeth. the handle nearesthim, and the ends of all three are turned so as to look somewhat inthe direction of the claws. Thus the only finger not touching theforceps is the little finger, and the principal grasping force isexerted by the index finger and the thumb, while the lifting forcein carrying the clamp to place is exerted by the third finger as thehandle lies across it. (Fig. 28.) In adjusting the dam to the upper teeth the patients headshould be tipped back so as to expose these teeth as perfectly aspossible, and for the right side of the mouth the operator should EXCLUSIOX OF MOISTUUE DURING OPERATIOXS. 67 stand to the right and in front of the patient with the patientshead slightly tnrned to the right, so as to present the occlusal sur-faces of the teeth directly toward the operator, the chin beingraised to a convenient height for this purpose. On the left side of the mouth the teeth can often be better ap-proached by slightly lowering the chair and stepping a trifle to the Fin. back of the i)atient, so as to pass tlie left liand and arm over andaround the patients head to hold the upper edge of the rubberaway while tlie right hand is iiiaui})uhvting the forceps. Theoperator should study carefully the various peculiarities of formand position ])rcs(iitc<l hy the difVcrcnt mouths and tooth of indi-viduals, so as thereby to avail himself of every advantage whichhis ingenuity may suggest. Jhere is always a best and handiestway of doing these tilings, but no one way is always the best nor 68 PRINCIPLES AND PRACTICE OF FILLING TEETH. the handiest, and to gain the most satisfactory results in every casethe operator mnst be prepared to vary his methods, so far at leastas the minor details of execution are concerned. For the upper incisors and cuspids the holes should be punchedin the dam from an inch and a half to two inches from the upperedge, depending on the case. The former distance will be ample Fig. 28.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentalrestorationper
