DT News - MEA - Following a simpler path from prep to crown

Following a simpler path from prep to crown

Dr Carlos Eduardo Sabrosa, Brazil

Sun. 11 February 2018

save

Indirect restorative procedures can be time-consuming and complicated: many different processes from impression taking to cementation are carried out in the dental office, and in each of them, different strategies may lead to success. However, some of the available materials and techniques will involve a lot of effort, while others enable users to proceed quickly and simplify the complete procedure. A simplified workflow from prep to crown that really makes life easier for the dental practitioner is described below.

Comments
The described patient case shows that it is possible to significantly reduce the number of working steps in an indirect restorative procedure. In this way, potential sources of error are eliminated and chair-time is decreased. Key to success is the use of innovative, high-quality materials that offer ease of use and lead to increased efficiency in the dental office. These include the above-mentioned monophase impression material, the bulk fill composite, the temporisation material that does not require polishing and the self-adhesive resin cement all offered by a single manufacturer.

*Relyx™ U200 self-adhesive resin cement in the MEA Region

Fig. 1: Initial situation. The failed composite restoration covering a large part of the left mandibular first molar’s occlusal surface needs to be replaced.

Fig. 2: Due to the size of the restoration, the amount of remaining tooth structure might not be sufficient to ensure the required stability for a direct composite restoration.

Fig. 3: Upon removal of the old filling, it becomes clear that a crown is needed to ensure the required stability. The tooth is built up with 3M™ Filtek™ Bulk Fill Posterior Restorative, which may be placed in conjunction with 3M™ Single Bond Universal Adhesive and in increments of up to 5 mm.

Fig. 4: Following tooth preparation, a temporary crown is produced chairside with 3M™ Protemp™ 4 Temporization Material. This material exhibits a high strength and a natural gloss without polishing.

Fig. 5: One week after the preparation procedure, healthy soft tissue conditions are obtained. They lay the foundation for a high-quality precision impression.

Fig. 6: In order to allow for a detailed capture of the preparation margin, the gingival tissues are retracted using the double-cord technique. Alternatively, a single cord may be applied in combination with 3M™ Astringent Retraction Paste.

Fig. 7: Monophase impression taken with 3M™ Impregum™ Penta™ Soft Polyether Impression Material. A very detailed representation of the preparation margin is obtained with this simple technique.

Fig. 8: Situation at intraoral try-in of the crown. It is made of a 3M™ Lava™ Zirconia coping and an IPS e.max® Ceram (Ivoclar Vivadent) porcelain layer. Ideal intraoral conditions (smooth margins, healthy tissues) are visible.

Fig. 9: Sandblasting of the crown’s intaglio surface to create a microretentive surface structure that is beneficial for cementation. This procedure is recommended for oxide ceramic materials.

Fig. 10: Application of self-adhesive resin cement* into the crown. This proven product offers a simplified procedure since it eliminates the need for separate etching, priming and bonding.

Fig. 11: Situation after crown placement, removal of the excess cement and thorough cleaning. The crown blends in nicely with the surrounding tooth structure.

Fig. 12: At the check-up several days after crown placement, a great overall picture is obtained. The patient is happy with the final restoration in terms of aesthetics and function.

To post a reply please login or register

Education

On-demand
webinar

Kieferorthopädie und Prothetik: ästhetischer und funktioneller Erfolg

Dr. Marcin Krupinski, Dr. Ektor Grammatopoulos

Watch recording

On-demand
webinar

Orthodontics and prosthodontics: aesthetic and functional success

Dr. Marcin Krupinski, Dr. Ektor Grammatopoulos

Watch recording

On-demand
webinar

Myths of mini-implant dentistry

Allan H. Fuhr DMD

Watch recording

1CE

On-demand
webinar

“From Elastomeric Impressions to Digital Replication, It’s a Scanning Wand, not a Magic Wand”

Brian K. Schroder

Watch recording

3CE

Maximizing efficiency using 3M impression products

Making an acceptable impression in dentistry requires not only the use of precision impression material but also the use of adjunct materials to help ...

save

Single vs. multi-use dental products in a post-COVID dental setting

Should you reprocess and reuse, or pitch after each patient? Learn what to consider when choosing between single or multi-use products in a post-COVID ...

save

Midline diastema closure using the front wing technique

A 35-year-old female patient expressed a desire to optimize existing composite restorations on her maxillary central incisors, which had been placed 15 ...

save

DT Middle East & Africa Edition No. 2, 2024

Dr Galip Gürel coming to Dubai to teach his signature veneers hands-on course in cooperation with CAPP / Events / Industry / News / Conservative aesthetic management of white spot fl uorosis lesions / Diastema closure using a direct two-matrix technique / Veneers, bonding and artifi cial intelligence - An interview with Dr Maciej Żarow / ...