Tech Talk: Dentures I Robert Kreyer, CDT
Staining Porcelain Denture Teeth
By Robert Kreyer, CDT
rue artistry in high-end remov- that form on the teeth will depend on surface with individual characterizations
able prosthetics demands that we the individual’s level of dental care and and gloss that perfectly matches the patient’s
create product that is in harmony habits. natural teeth. This technique also can be
Robert E. Kreyer Jr., CDT, with a patient’s face and one that func- By modifying the shape and shade of used to regain the vitality and translu-
is a third-generation prosthetic tions within the denture space of the oral prefabricated denture teeth after they have cency in denture teeth to create a more
technician and owner of environment. If we as technical dental pro- been set, it is possible to obtain a facial youthful smile.
Kreyer Dental Prosthetics. fessionals are to provide clinicians with
He is a member of the
optimal prosthetic technical treatment, we
of Dental Laboratories,
must revolutionize our business approach
to marketing our esthetic complete den-
the American College of
Prosthodontists (ACP) Dental
Technician Alliance, the L.D. During the last year of writing “Tech According to McGarry and Jacobson in recent dental school graduates. This ed-
Pankey Alumni Association, Talk Dentures” my technique articles have their paper “The professions of dentistry ucational gap has provided removable
and the American discussed ways to provide an added value and dental laboratory technology: Im- prosthetic dental laboratories the oppor-
Prosthodontic Society (APS). proving the interface,” published in the tunity to market their services as pros-
service to the clinicians you work with
He has presented scientific
while extending your existing denture February 2004 issue of JADA, the edu- thetic consultants for developing techni-
table clinics on his prosthetic
techniques to the APS and product line. Within these articles are pros- cational and economic imbalances of the cal treatment plans to the dental clini-
ACP. He also is a consultant thetic ideas and techniques that will enable past are now being reversed with dental cians we work with.
to dental manufacturers the technician and clinician to increase the technologists being the most knowl- The aging “baby boomer” esthetic ex-
and lectures extensively value of their complete dentures. edgeable members of the dentist/dental pectations and restorative prosthetic de-
throughout the United States. laboratory technician partnership in the mands upon dental professionals are in-
Back to nature area of laboratory techniques, instrumen- creasing while our educational require-
To create true harmony in a denture tation, and materials. ments and technician population are de-
wearer’s smile, the prefabricated denture Before 1995 dentists were required creasing.
teeth must be set, shaped, and contoured to master different levels of laboratory If we are to satisfy these patient de-
to the individual patient’s sex, personal- procedures as part of their clinical dental mands and expectations, we must pro-
ity, and age. Tooth surfaces vary widely education. vide a service to the clinicians we work
depending on the age of the patient. Eat- Since 1995 technicians’ prosthetic with to meet these ever growing stan-
ing habits and increasing age tend to affect technological expectations have expand- dards of excellence in esthetic dentistry.
the translucency and color of natural ed to one of a “prosthetic consultant” to — RK
teeth. In addition the characterizations
STEP-BY-STEP STAIN TECHNIQUE
Fig. 1 Make a PVS matrix using Sil-Tech Su- Fig. 2 Map the personalized charact- Fig. 3 Using an abrasive instrument,
per to create a reference for tooth placement. edrizations on the denture teeth. shape each denture tooth.
Fig. 4 Layout desired stains Fig. 5 Apply porcelain stains Fig. 6 Apply glaze paste to each porcelain
on the mixing palette. with a fine brush. denture tooth.
Fig. 7 The stained and
glazed denture teeth, ready
for tooth setup.
36 September 2005 I Dental Lab Products
Continuing education in Switzerland
Ever since I was a course participant at our in-depth study of the Gerber tooth occlusal forces in a Class I and Class II Renfert headquarters and production fa-
the Swissedent Foundation in 1975, my arrangement philosophy. Gerber sets cross-bite occlusal scheme. We then cility. Renfert has been a generous sup-
dream was to someday study complete teeth so that the forces of mastication ap- waxed complete dentures while studying porter of my hands-on esthetic prosthetic
denture prosthetics at Candulor Dental plied to them are least able to dislodge the photographs of natural gingival contours courses.
GmbH in Zurich, Switzerland. dentures. Gerber insists that the occlusal and colors. Back in the States
Three months ago my dream became surfaces of the posterior teeth must follow The third day was devoted to the Candu- Three weeks after my return, I gave the
reality. I left for Switzerland to learn ad- the curve of the lower ridge. lor Aesthetic Color Set and acrylic pro- first Candulor “Art of Prosthetics” course in
vanced Swiss prosthetic techniques. My This simple rule ensures that occlusal cessing techniques and the last day con- Beverly Hills, Calif. at the Geneva Dental
goal is to help other dental technicians, forces are always at right angles to the centrated on an intensive recap and dis- Institute. This two-day, hands-on course
denturists, and dentists in the United ridge or area of support, thus promoting a cussion of the Gerber philosophy.
States extend their existing product line of
dentures and provide a high-end esthetic
denture that exceeds patient cosmetic and
functional expectations while adding value
to the laboratory’s denture services.
Education at Candulor
My four-day hands-on prosthetic course
started with an introduction to the Gerber
philosophy of occlusion. My instructor,
Antonio Ferrilli MDT, demonstrated how to
analyze an edentulous master model in
preparation for setting and arranging the Max Sturm, President of Canulor and Antonio equiliberating a Gerber setup. Demonstrating tooth staining technique
denture teeth. Antonio Ferrilli, MDT instructor. in Beverly Hills.
The first day we characterized an anteri-
or set of Candulor PhysioSet CT porcelain high degree of stability during function, es- Visits to Ivoclar and Renfert focused on complete denture gingival wax
teeth. We cut back the facial surface of the pecially when strong pressure is applied. After my hands-on training at Candulor, I contours and colors, gingival base acrylic
porcelain to add translucency and vertical Using a ridge compass, the lower alve- visited the Ivoclar Vivadent ICDE training characterization, and colorization using the
craze lines on the incisal third. On the cer- olar ridge can be assessed for its den- facility in Lichtenstein. Ivoclar Vivadent’s Candulor Aesthetic Color Set. There also
vical third, I added a darker color than the ture-supporting qualities and the lowest BPS training facility is absolutely incredible was an introduction to custom straining
body to create a definite stained appear- and most stable point of the lower poste- with beautiful state of the art equipment. resin teeth and a discussion of staining
ance to the porcelain teeth. rior ridge can be determined. On my last day in Switzerland I took porcelain teeth.
After re-firing and glazing, we started On day two we studied equilibration of the train to Singen, Germany to visit the — RK
Stain technique teeth and check them for desired placement achieve optimal prosthetic care for the that they can sing, eat, and laugh in com-
There are different techniques for using of characterized stains and lifelike effect. compromised edentulous patient. To help plete confidence is truly a blessing in the
stains to modify the shade of resin or porce- 11. Mix the glaze paste with glaze fluid restore the smile, speech, and self- work we do as prosthetic technical den-
lain denture teeth. The stain technique pre- to obtain a thick consistency and apply a confidence of edentulous patients so tal professionals. DLP
sented here is for porcelain denture teeth. thin layer to the complete surface of the
1. After the teeth have been set and characterized porcelain teeth (Fig. 6).
waxed, make a PVS matrix with Sil-Tech 12. Place the glazed porcelain teeth back
Super (manufacturer?) to create a refer- on the honeycomb tray and fire in porce-
ence for placement of the teeth (Fig. 1). lain furnace.
2. Remove the denture teeth from the 13. After cooling, check for desired char-
waxed base and thoroughly clean.. acterization and gloss effect then lightly pol-
3. Using a red pencil, draw lines on the ish the surface with diamond polishing paste
facial surface of the teeth, mapping where on a suitable polishing wheel (Fig. 7). The
the personalized characterizations will be pins can either be re-plated or apply opaque
added (Fig. 2). to mask out the black oxidation.
4. Shape each tooth using abrasive 14. Reset the characterized teeth into
instruments to allow the addition of the the matrix for final waxing for aesthetic
porcelain characterized stains (Fig. 3). denture try-in.
5. Sandblast the entire surface of each As prosthetic dental technicians we must
tooth with aluminum oxide at a pressure of
2 bar to clean and etch.
be educated and thoroughly understand
the baseline basics of complete denture Arlink
6. Using a steam jet, clean each tooth prosthetics in order to comprehend the Jr 1/3 sq
to remove any dirt or grease before apply- more complex biomechanical principles of
ing stains. design and esthetics. If we look at nature
7 Lay out your desired stains on the mix- or as Dr. Earl Pound called the “master archi-
ing palate to be mixed with staining liquid tect” who created and designed the oral
(Fig. 4). environment, it becomes evident that most
8. To characterize the individual porce- dentures do not assimilate the gingival con-
lain teeth, apply the mixed porcelain stains tour and characterized colors of natural liv-
with a fine brush to create your desired ing tissue and dentition. As technical dental
characterized effect (Fig. 5). professionals our responsibility is to design
9. Set the stained porcelain denture and rebuild these natural oral structures of
teeth a honeycomb tray or firing cushion lost bone, tissue, and dentition with esthetic
supported by retentive pins with the facial complete denture prosthetics.
surface up during the firing process. If we aspire to reach the next level of
10. Fire and cool the porcelain denture prosthetic treatment, we must strive to See us at the XXX Meeting, Booth XXX.
Use XXX on card or at www.dentalproducts.net
Dental Lab Products I September 2005 37