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overcome the difficulty of implant angles using transmucosal

References

abutments (Figure 7) which have the ability to change the implant 1. Vigolo P, Mutinelli S, Givani A, Stellini E. Cemented versus screw-

angle up to 30°. This allows the restorative dentist to fabricate retained implant-supported single-tooth crowns: a 10-year randomised con-
trolled trial. Eur J Oral Implantol. 2012 Winter;5(4):355-64.
2. Wadhwani C, Rapoport D, La Rosa S, Hess T, Kretschmar S.
Radiographic detection and characteristic patterns of residual excess
cement associated with cement-retained implant restorations: a clinical
report. J Prosthet Dent. 2012 Mar;107(3):151-7. doi: 10.1016/S0022-
3913(12)60046-8.
3. Wasiluk G, Chomik E, Gehrke P, Pietruska M, Skurska A, Pietruski J.
Incidence of undetected cement on CAD/CAM monolithic zirconia
crowns and customized CAD/CAM implant abutments. A prospective
case series. Clin Oral Implants Res. 2016 May 17. doi: 10.1111/clr.12879.
[Epub ahead of print]
4. Ferreiroa A, Peñarrocha-Diago M, Pradíes G, Sola-Ruiz MF, Agustín-
Panadero R. Cemented and screw-retained implant-supported single-
tooth restorations in the molar mandibular region: A retrospective compar-
ison study after an observation period of 1 to 4 years. J Clin Exp Dent. 2015
Feb 1;7(1):e89-94. doi: 10.4317/jced.51708. eCollection 2015.
5. Bonfante EA, Almeida EO, Lorenzoni FC, Coelho PG. Effects
of implant diameter and prosthesis retention system on the reliability of
Figure 7. Use of tapered abutments for a maxillary milled hybrid
Figure 7. Use of tapered abutments for a maxillary milled hybrid case. single crowns. Int J Oral Maxillofac Implants. 2015 Jan-Feb;30(1):95-
case. 101. doi: 10.11607/jomi.3545.
6. Bonfante EA, Almeida EO, Lorenzoni FC, Coelho PG. Effects
T
cases such as Revitalize (Zimmer-Biomet), or do cases such as of implant diameter and prosthesis retention system on the reliability of

All-On-Four (Nobel Biocare), or process bar-supported overden- single crowns. Int J Oral Maxillofac Implants. 2015 Jan-Feb;30(1):95-

tures, or be able to fabricate your choice of hybrid with acrylic. 101. doi: 10.11607/jomi.3545.

And every implant case can be restored using custom cast or 7. Cicciù M, Beretta M, Risitano G, Maiorana C. Cemented-retained vs
screw-retained implant restorations: an investigation on 1939 dental

milled abutments for a cement-retained case. implants. Minerva Stomatol. 2008 Apr;57(4):167-79.

The choice between cement or screw-retained should be made by

the clinician and not dictated by where one practices. The choice Dr. Chanda Kale is a graduate of Nair Dental College
should be carefully made based on facts, concerns, and the pros in India and New York University School of Dentistry.
and cons of each design. The course of treatment planning must He has completed continuing education programs in
7
flow from restorative to surgical and then back to restorative orthodontics as well as the NYU Implant/Prosthetic
program. He has been in private practice in Brooklyn
design. Lack of vertical space may dictate the final prosthesis as since 1981.
well. From a technical point of view, every implant can be a
cement-retained case, but for every screw-retained case, implant
position must be carefully planned.

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