Page 48 - Dental Practice South Asia 18-6

cosmetic dentistry section

FIG 16

ly relieved to prevent inflammation and ensure healthy tissues at the
time of veneer cementation. A Teflon tape can also be used during
setting of bis-acryl interdentally to prevent excess in this area.

ISOLATION
Rubber dam provides a clean and dry field in addition to better visu-
alization of teeth and margins. Brinkers #44 or dental floss can help
with additional tissue retraction and subsequent easy clean up of the
cement.

CEMENTATION PROTOCOL FIG 17
Intaglio Surface is first treated with 9% buffered hydrofluoric acid
(Ultradent) for 20 seconds followed by application of 37% phos- choice for smile makeovers. However case selection and bonding
phoric acid to remove the insoluble porcelain salts and debris substrate (enamel is better than dentin) should be considered when
formed. providing such treatment modalities to ensure their long term
Silane is applied and allowed to evaporate for 60 seconds, if not it success.
can be air dried after 60 seconds with oil free air. Now we can pro-
ceed with application of universal bond, air dry but it should not be
cured to prevent any seating errors.
Tooth Surface is air abraded to remove debris. 37% phosphoric
acid is applied for 15 seconds and washed. This should be air dried
to reveal a frosted appearance. Universal bond (3M) is applied, air
dried but not cured. I prefer to use a light activated resin cement for
veneers rather than dual cure because of the increased working time,
control and ease of clean up (Microbrush or #0 brush).
Curing Light: The veneers can be spot cured or tack cured to
remove residual cement. Additionally the veneer should be cured
under K.Y. Jelly for 40 seconds on all surfaces to ensure complete
setting. Residual cement overhangs can be removed with #12 blade .
A yellow bur and Zekrya Gingiva protecting kit (Dentsply) can also
be used to remove cervical overhang. About the AUTHOR
Occlusion is verified and patient is recalled after a week.
Follow Up: Photographs and detailed hygiene instructions are Dr. Sanah Sayed is a Cosmetic Dentist practicing in
shared with the patient. Pune. She has completed her BDS from D.Y. Patil Dental
College (Navi Mumbai) and Advanced Esthetics from
Manipal Dental College.
CONCLUSION
Lithium di silicate veneers fit perfectly in the minimally invasive
world of dentistry. These versatile materials offer aesthetics, translu-
cency and bond strengths to make beautiful, functional and durable
restorations in the anterior teeth.
The 10 year overall cumulative survival rate of lithium disilicate
veneers is 99.6% as per several researches making them a good

48 Dental Practice // November-December 2022 // Vol 18 No 6