pascal_magne

Hannig et al. (1991) established important clinical guidelines for partial adhesive restorations, such as composite and ceramic inlays/onlays. This type of margin is, in fact, a concave bevel, optimized for enamel adhesion. By cutting across the enamel prisms transversely rather than parallel to their longitudinal axis, it significantly increases the surface area available for acid etching and resin bonding. It also offers important clinical advantages such as improved esthetics through a smooth, progressive transition between the restorative material and natural enamel and excellent scannability, thanks to the clearly defined yet conservative margin
The concave bevel is best created with a fine-grit diamond round bur at low speed—but several important technical mistakes must be avoided. Learn how to design, prepare, and reproduce these margins correctly during ADVANCED INLAY/ONLAY this October!

LEARN THE PROCESS — HANDS-ON! 🦷

Master the workflow of Semi-(In)Direct Posterior Restorations through a practical, hands-on approach:

🔹 Direct Inlay • Extraoral Inlay • CAD/CAM
🔹 CAD/CAM Materials & Fatigue Resistance
🔹 Preparation Design: Onlay • Overlay • Veneerlay • Endocrown
🔹 Immediate Dentin Sealing (IDS)
🔹 Endodontically Treated Teeth (ETTs)
🔹 Milling, Dual Milling & Customization
🔹 Adhesive & Luting Procedures

From preparation to final cementation, learn the complete process and elevate your restorative workflow.

Learn it. Practice it. Master it.

DentalEducation HandsOnCourse DentalCourse InlayOnlay Endocrown ImmediateDentinSealing Dentistry

Thank you to this amazing team of researchers—not only for confirming our research on this very unique adhesive, OptiBond FL, but also for highlighting the significance of immediate endodontic dentin sealing.
Always seal dentin as soon as possible.
And, when possible, even before endodontic treatment—hence Immediate Pre-Endodontic Dentin Sealing (IPDS).

ORIGINAL PROTOCOLS for Advanced Biomimetic Restorative Dentistry - Master core principles for performing direct posterior resin composite restorations with a focus on replicating natural tooth anatomy. The curriculum covers advanced diagnostic techniques like laser fluorescence and fiber optic transillumination and restorative strategies such as deep margin elevation and the use of short-fiber reinforced composites. Key clinical steps are detailed, including bilaminar shade selection, precise caries removal, the use of oscillating instruments for refined preparation, as well as matrices and separation rings and, of course, gold-standard enamel/dentin bonding step-by-step. Practitioners are guided through essential protocols for isolation, bonding, and layering to ensure functional longevity and structural integrity. Ultimately, the program emphasizes a hands-on approach to mastering the complex histo-morphology of back teeth through modern biomimetic dentistry.

Dr. Adriana Ubaldini, I have been blessed by your presence at USC as a visiting scholar in my research lab. And now, we are all blessed by this wonderful book, which enlightens us and offers so much perspective. Thank you from the bottom of my heart. It was an honor to write the foreword to this miraculous story.
With all my love!

Dra. Adriana Ubaldini, fui abençoado por sua presença na USC como pesquisadora visitante em meu laboratório. E agora, todos nós somos abençoados por este livro maravilhoso, que nos ilumina e nos oferece tantas perspectivas. Obrigado, do fundo do meu coração. Foi uma honra escrever o prefácio desta história milagrosa.
Com todo o meu amor!

HISTORICAL PERSPECTIVE AND TERMINOLOGY During the 1980s and early 1990s, restorative options were mainly limited to direct composite restorations or full-coverage cemented crowns. Indirect bonded restorations, such as veneers, inlays, and onlays, emerged as a more conservative and economical alternative, bridging the gap between these two approaches.

A further step was the development of semi-direct and semi-indirect techniques, which combined chairside and extraoral procedures. Semi-direct restorations are completed in a single appointment, whereas semi-indirect restorations require two appointments and a provisional restoration. Unlike conventional indirect restorations, all laboratory-type procedures are performed in-house, without the need for a dental laboratory.

These techniques are particularly useful when direct restoration is challenging—for example, with large restorations and cervical margins in dentin—but a laboratory-made indirect restoration is not justified or affordable. They are especially effective for large Class I and II restorations on a limited number of posterior teeth, while the extraoral phase allows better control of occlusal and interdental anatomy.

The concept was initially developed for posterior composite inlays and later adapted to anterior veneers. Early CAD/CAM systems also enabled chairside ceramic inlays and onlays. A major development occurred in 2001 with the introduction of CAD/CAM composite resin blocks, which opened new possibilities for semi-direct restorative techniques.

Regarding the case featured in my previous post, a regular flat Mylar strip was used while layering the interdental areas.

Different types of matrices can be used. Surprisingly, a rectangle of simple flat Mylar strip can produce very predictable and well-defined contacts. I particularly like creating straight contact “lines” rather than overly convex contact areas.

This helps maximize closure toward the cervical aspect using the “miniwing concept”—designing pyramidal-shaped extensions with a flat vertex at the contact and three triangular surfaces: buccal, lingual, and a concave cervical surface designed to accommodate the papilla.

The goal of gap closure is not simply to create a contact, but to control its position, geometry, and cervical closure in order to achieve more predictable interdental anatomy.