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Using a 1-ml syringe for the chloroform dip root canal filling technique
0099-2399/93/1909-0478/$03.00/0 JOURNAL OF ENDODONTICS
Printed in U.S.A.
Copyright © 1993 by The American Association of Endodontists
VOL. 19, NO. 9, SEPTEMBER1993
CLINICAL AID Using a 1-ml Syringe for the Chloroform Dip Root Canal Filling Technique Jerome C. Donneily, DMD
This article describes using a 1-ml syringe as an alternative to a dappen dish to hold chloroform during the chloroform dip root canal filling technique. The syringe effectively holds chloroform while limiting its exposure to the endodontic operatory air.
A recent article (1) examined the safety of using chloroform in the endodontic operatory. The authors discussed using chloroform during endodontic retreatment and for the chloroform dip root canal filling technique. The method used to perform the chloroform dip technique in that study involved placing the chloroform into a dappen dish. This exposed the chloroform to the air for about 5 min while the dentist softened and seated the gutta-percha into the prepared tooth. Placing the chloroform in the dappen dish exposed a large surface volume to evaporation into the operatory air. Although this study found operatory chloroform levels within the Occupational Safety and Health Administration prescribed limits for occupational exposure, it is desirable to reduce them further, if possible. The following technique is an effective way to eliminate the dappen dish for holding chloroform, or suggested substitutes (2-5), when using the chloroform dip root canal filling method.
FOG 1. Insertion of cone into tuberculin syringe.
into the open end of the syringe (Fig. 1). Seat the cone t o place in the prepared tooth. Deposit unused chloroform from the syringe into a properly marked and covered waste bottle for future disposal according to the manufacturer's directions. The opinions or assertions contained herein are the private views of the author and are not to be construed as official or as reflecting the views of the Department of the Army or the Department of Defense. Dr. Donnelly is a Lieutenant Colonel and Chief, Endodontics, U.S. Army Dental Activity, Fort Hood, TX. Address requests for reprints to Dr. Jerome Donnelly, 3001 Oakwood Drive, Harker Heights, TX 76543.
TECHNIQUE Transfer the chloroform from the quart bottle to a properly marked 50-ml holding bottle. Using a 1-ml sterile syringe draw up about 0.3 ml of solution into the syringe, being careful not to contaminate the end that goes into the bottle. If using the chloroform for endodontic retreatment, place a 21-gauge short needle on the syringe. Deposit a drop or two into the pulp chamber as needed to soften the gutta-percha. If using the chloroform to soften the tip of the gutta-percha, leave the needle off with the end of the syringe open. Grasp the gutta-percha with cotton forceps and insert it 2 to 3 mm
References
1. McDonald MN, Vire DE. Chloroform in the endodontic operatory. J Endodon 1992;18:301-3. 2. Wennberg A, Orstavik D. Evaluation of alternatives to chloroform in endodontic practice. Ended Dent Traumato11989;5:234. 3. Wourms DJ, Campbell AD, Hicks ML, Pelleu GB Jr. Alternative solvents to chloroform for gutta-percha removal. J Endodon 1990;16:224-6. 4. Kaplowitz GJ. Evaluation of gutta-percha solvents. J Endodon 1990;16:539-40. 5. Hunter KR, Doblecki W, Pelleu GB Jr. Halothane and eucalyptol as alternatives to chloroform for softening gutta-percha. J Endodon 1991; 17:310-2.
478
Printed in U.S.A.
Copyright © 1993 by The American Association of Endodontists
VOL. 19, NO. 9, SEPTEMBER1993
CLINICAL AID Using a 1-ml Syringe for the Chloroform Dip Root Canal Filling Technique Jerome C. Donneily, DMD
This article describes using a 1-ml syringe as an alternative to a dappen dish to hold chloroform during the chloroform dip root canal filling technique. The syringe effectively holds chloroform while limiting its exposure to the endodontic operatory air.
A recent article (1) examined the safety of using chloroform in the endodontic operatory. The authors discussed using chloroform during endodontic retreatment and for the chloroform dip root canal filling technique. The method used to perform the chloroform dip technique in that study involved placing the chloroform into a dappen dish. This exposed the chloroform to the air for about 5 min while the dentist softened and seated the gutta-percha into the prepared tooth. Placing the chloroform in the dappen dish exposed a large surface volume to evaporation into the operatory air. Although this study found operatory chloroform levels within the Occupational Safety and Health Administration prescribed limits for occupational exposure, it is desirable to reduce them further, if possible. The following technique is an effective way to eliminate the dappen dish for holding chloroform, or suggested substitutes (2-5), when using the chloroform dip root canal filling method.
FOG 1. Insertion of cone into tuberculin syringe.
into the open end of the syringe (Fig. 1). Seat the cone t o place in the prepared tooth. Deposit unused chloroform from the syringe into a properly marked and covered waste bottle for future disposal according to the manufacturer's directions. The opinions or assertions contained herein are the private views of the author and are not to be construed as official or as reflecting the views of the Department of the Army or the Department of Defense. Dr. Donnelly is a Lieutenant Colonel and Chief, Endodontics, U.S. Army Dental Activity, Fort Hood, TX. Address requests for reprints to Dr. Jerome Donnelly, 3001 Oakwood Drive, Harker Heights, TX 76543.
TECHNIQUE Transfer the chloroform from the quart bottle to a properly marked 50-ml holding bottle. Using a 1-ml sterile syringe draw up about 0.3 ml of solution into the syringe, being careful not to contaminate the end that goes into the bottle. If using the chloroform for endodontic retreatment, place a 21-gauge short needle on the syringe. Deposit a drop or two into the pulp chamber as needed to soften the gutta-percha. If using the chloroform to soften the tip of the gutta-percha, leave the needle off with the end of the syringe open. Grasp the gutta-percha with cotton forceps and insert it 2 to 3 mm
References
1. McDonald MN, Vire DE. Chloroform in the endodontic operatory. J Endodon 1992;18:301-3. 2. Wennberg A, Orstavik D. Evaluation of alternatives to chloroform in endodontic practice. Ended Dent Traumato11989;5:234. 3. Wourms DJ, Campbell AD, Hicks ML, Pelleu GB Jr. Alternative solvents to chloroform for gutta-percha removal. J Endodon 1990;16:224-6. 4. Kaplowitz GJ. Evaluation of gutta-percha solvents. J Endodon 1990;16:539-40. 5. Hunter KR, Doblecki W, Pelleu GB Jr. Halothane and eucalyptol as alternatives to chloroform for softening gutta-percha. J Endodon 1991; 17:310-2.
478