Clinical use of injection-molded thermoplasticized gutta-percha for obturation of the root canal system: a preliminary report

By Marlin J, Krakow AA, Desilets RP and Gron P

Date: 02/1982
Journal: JOE

Summary: 

oPurpose:  to evaluate the results of injected thermoplasticized gutta-percha using a recently developed delivery system.

on=  125 cases

Materials/Methods:

oHerschowitz, Marlin, and Stiglitz have developed a delivery system of injecting thermoplasticized gutta-percha.

oDifferent settings are used for various needle sizes. The syringe is loaded with available GP cones. A needle is selected to properly fit the canal Fig.1. oThe needles are specially designed and available in gauges 18, 20, and 25, Fig 2. size 25 gauge needle corresponds to size 40 and gauge 18 and 20 corresponds to size 110.

oA drop of sealer is wiped along the coronal half of the canal. When the GP is sufficiently heated, it flows freely from the needle and will string out to a thread-like strand.

oThe needle is displaced coronally when apical deposition of gutta-percha is completed. oA hand or finger plugger, dipped in alcohol to prevent is used to condense the filling material to the apex.

oAdditional gutta-percha is injected  to fill the body of the canal. oPatients were recalled 6 to 12 months postoperatively.

Most highlighted Results: 

o In 125 cases, 54 of 56 cases with preoperative PA radiolucent areas showed partial or complete resolution; 67 of 69 cases without any original PA radiolucent areas showed no radiographic changes.

Clinical significance:

o The findings confirmed the earlier observation that injection of thermoplasticized gutta-percha in conjunction with the sealer represents an effective approach to obturation of the root canal space.

percha is completed.

oA hand or finger plugger, dipped in alcohol to prevent is used to condense the filling material to the apex.

oAdditional gutta-percha is injected  to fill the body of the canal. oPatients were recalled 6 to 12 months postoperatively.

Most highlighted Results: 

o In 125 cases, 54 of 56 cases with preoperative PA radiolucent areas showed partial or complete resolution; 67 of 69 cases without any original PA radiolucent areas showed no radiographic changes.

Clinical significance:

o The findings confirmed the earlier observation that injection of thermoplasticized gutta-percha in conjunction with the sealer represents an effective approach to obturation of the root canal space.