A technique for the easy removal of tight castings from Dentoform teeth

A technique Dentoform A.

A.

for the easy removal

castings

from

teeth

Zakaria,

Marquette

of tight

B.Ch.D.,

University,

MS.*

School

of Dentistry,

Milwaukee,

Wis.

A

tight casting of a full cast crown may adhere tightly to the prepared Dentoform tooth. This could happen due to the existence of any of the following conditions: (1) a well fitting crown with the walls of the preparation almost parallel, (2) overwaxed margins, (3) slight undercuts or roughness on the surface of the preparation, (4) improperly cleaned castings with some debris or investment left on the inside, and (5) d amaged margins due to accidental dropping of the casting. To avoid the use of force or pliers, which mav lead to the fracture of the preparation, the following technique is used.

Fig. 1. The instrument.

*Instructor,

prepared

tooth

Departments

is held

of

upright

Histology

with

and

a Goslee

Fixed

plier

and

tapped

with

a wooden

Prosthodontics. 347

348

Zakaria

.I. l'!v\thet.

September.

L)eli;

1973

PROCEDURE I. Remove the Dentoform tooth with the crolvn attached from tltv I)c*tltoforn~ socket. 2. Place tile scre\\’ in the proper hole otl thf, apical end of the tooth. I .c:Ix’l~’ ~1 $!4 inch length of screw showing. 3. Hold the part of the screw protruding vvith the beaks of :I Goslet~ pliet,. 4. Use the wooden end of a plaster mixer or any similar tool to apply light taps on the joint of the Goslce plier. Make sure that tltc tooth is in xi rqxight position (Fig. 11. 5. After a fel\. taps. the crown lvill loosen and ~OJ’ off thr prrparntio!l lvithor11 an)- dnmngc to it or to the IIentoform tooth. SUMMARY A technique for removing tight castings stuck on Dentoform teeth is ‘l’he same procedure could be used with crowns stuck on stone dies or with facings on castings. Great care should be exercised so as not to break the junction with the dowel pin. Detect the cause of the problem and cortcct MARQUETTE UNIVERSITY SCHOOL OF DENTISTRY 604 N. 16T~ ST. MILWAUKEE, W1s.53233

described l>orcelain die at its it.