Page 15 - Dental Practice Vol 17 No.5_

FIG 16: Try-in of Crafted Ceramic Art

PREPARATION OF INTAGLIO SURFACE OF CERAMIC
ART FOR BONDING
These Li-Di-Si laminates are first embedded in
putty material so as to hold it in the scaffolding and
now the intaglio surface of prosthesis is treated with
9% hydrofluoric acid(Porcelain Etch, Ultradent)
for 90 seconds and then the material is rinsed off
with water and air dried. This is followed by appli-
cation of 37% phosphoric acid for 30 seconds to
remove the byproduct of etching with hydrofluoric
acid. Check the frosty appearance of the surface. It’s FIG 17d: Removing remnant of HFA etching using
37% PhA for 30s
time to start the application of silane coupling
agent (Silane,Utradent)and let it dry for 120 sec-
onds. Now apply the dual-cure bonding agent
(Clearfil-SE, Wizdent Kuraray) and now the pros- FIG 17a: Ceramic Art embedded in Putty
thesis is ready for bonding using dual cure adhesive
resin cement (Clearfil-SA luting, Wizdent,
Kuraray).
STEPS FOR BONDING CERAMIC ART
Prepare the tooth Surface for receiving the Ceramic
Art. To begin with the teeth are isolated with split
rubber dam (Hygienic, Coltene).
The tooth surface is treated with 37% phosphoric
acid for 15-20 seconds and the acid is rinsed off and
the surface is air dried. Check the frosty appearance FIG 17b: Application of 9% HFA for 90s
of the tooth surface. It’s the time to start the appli-
cation of the dual-cure bonding agent (Clearfil-SE,
Wizdent Kuraray) and the prosthesis is bonded to FIG 17e: Application of Silane for 120s
the tooth surface using dual cure adhesive resin
cement (Clearfil-SAluting, Wizdent, Kuraray). The
adhesive resin is then tag cured for 5 seconds and
excess is removed using 12 number surgical blade.
Lastly the resin layer is cured through the Liquid
Strip or transparent gel to remove oxygen inhibi-
tion layer to avoid any staining at the margins.
FIG 17c: Frosty Appearance after Rinsing HFA
The rubber dam is then removed and the occlusion
is checked for any occlusal interferences in protru-
sive and lateral excursive movements. The patient
was very happy with the final result. For us it was FIG 17f: Application of Dual cure Bonding Agent
the satisfaction of a job well done and knowing that
the hours of hard work that went into this case FIG 17: Preparation of Intaglio Surface of Ceramic
bought fruitful results. Art for Bonding

Dental Practice // May-June 2021 // Vol 17 No 5 15