QDT 2012 2

A comprehensive approach to problem solving in esthetic dentistry involves representation of several disciplines to redefi ne complications outside normal boundaries and reach solutions based on a new understanding of complex situations. The coming together of diverse minds

representing varied backgrounds can inspire new benchmarks for esthetic dental treatment. However, such an approach can be costly and diffi cult for obvious reasons. Practitioners today are therefore encouraged to expand their vision by learning more about disciplines outside their fi eld of practice. Professionals highly focused on one fi eld remain necessary, but those who have a comprehensive vision and who seek collaboration and continuous knowledge are most likely to succeed.

Understanding limitations—those of the materials and techniques we seek to employ and of the particular situation at hand, and considering our own limitations as well—is more vital than knowing the success rate of a given treatment approach or plan. In modern dentistry, failures are potentially catastrophic, and their repair is stressful, costly, and painful for the patient as well as the technician and dentist. When the limiting factors are carefully analyzed, failures can be anticipated and prevented, thus being a dynamic opportunity to expand the frontiers and strategies for esthetic dental treatment planning. Although this learning exercise requires commitment, hard work, and perseverance, it leads us to develop a different mindset, fostering an enhanced inner resilience that nurtures success.

For 35 years, Quintessence of Dental Technology has been a unique source of inspiration, with articles presenting a benchmark for what is the epitome of esthetic dental rehabilitation. In this commemorative issue, all articles were carefully selected to salute the reader with the fi nest examples of novel approaches for treatment planning and for mastering the infl uence of color, light dynamics of esthetic materials, communication, photography, materials science, dental composition, perio-prosthetic connection, tooth preservation, and requirements for advanced esthetic treatment. Please join me in relishing the inspiration generated by this delightful collection of artwork.

Sillas Duarte, Jr, DDS, MS, PhDEditor-in-Chiefsillas.duarte@usc.edu

Editorial

Setting the Benchmark

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Editorial: 2Setting the BenchmarkSillas Duarte, Jr, DDS, MS, PhD

Esthetic Rehabilitation of Compromised Anterior Teeth: 7Prosthetic Treatment of an Orthodontic CaseLeonardo Bacherini, DMD/Myra Brennan, DMD

Ultimate Ceramic Veneers: 29A Laboratory-Guided Ultraconservative Preparation Concept for Maximum Enamel PreservationOswaldo Scopin de Andrade, DDS, MS, PhD/José Carlos Romanini, CDT/Ronaldo Hirata, DDS, MS, PhD

BIOMATERIALS UPDATE 44A Comprehensive Guide for Post and Core RestorationsJin-Ho Phark, DDS, Dr Med Dent/Neimar Sartori, DDS, MS, PhD/Luana Oliveira, DDS, MS, PhD/Sillas Duarte, Jr, DDS, MS, PhD

Minimally Invasive Treatment of Initial Dental Erosion Using 65Pressed Lithium Disilicate Glass-Ceramic Restorations: A Case ReportFrancesca Vailati, MD, DMD, MSc/August Bruguera, MDT/Urs Christoph Belser, DMD, Prof Dr Med Dent

Value, Hue, and Chroma: 79Control of Value for Accurate Color ReproductionTomoyuki Hashinaka, RDT

An Alternative Treatment for an Ankylosed Central Incisor: 91The Perio-Prosthetic ConnectionEric Van Dooren, DDS/Murilo Calgaro, CDT/Gustavo Giordani, DDS/Victor Clavijo, DDS, MS, PhD

Digital Smile Design: 103A Tool for Treatment Planning and Communication in Esthetic DentistryChristian Coachman, DDS, CDT/Marcelo Calamita, DDS, MS, PhD

2012

EDITOR-IN-CHIEFSillas Duarte Jr, DDS, MS, PhDAssociate Professor and ChairDivision of Restorative SciencesOstrow School of Dentistry University of Southern CaliforniaLos Angeles, California

ASSOCIATE EDITORJin-Ho Phark, DDS, Dr Med DentDivision of Restorative SciencesOstrow School of Dentistry University of Southern CaliforniaLos Angeles, California

EDITORIAL REVIEW BOARDPinhas Adar, CDT, MDT Atlanta, GeorgiaNaoki Aiba, CDT Monterey, CaliforniaAmir Avishai, PhD Cleveland, OhioMarkus B. Blatz, DMD, PhD Philadelphia, PennsylvaniaGerard J. Chiche, DDS Augusta, GeorgiaShiro Kamachi, DMD Boston, MassachusettsEdward A. McLaren, DDS Los Angeles, CaliforniaServando Ramos, DDS US ArmyAvishai Sadan, DMD Los Angeles, CaliforniaThomas J. Salinas, DDS Rochester, MinnesotaNeimar Sartori, DDS, MS, PhD Florianopolis, BrazilO swaldo Scopin de Andrade, DDS,

MS, PhD São Paulo, BrazilTomizaku Tada, CDT Pasadena, CaliforniaFabiana Varjão, DDS, MS, PhD Los Angeles, CaliforniaAki Yoshida, CDT Weston, Massachusetts

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STATE OF THE ART 112Achieving Excellence in Smile Rehabilitation Using Ultraconservative Esthetic Treatment: A Multidisciplinary VisionVictor Grover Rene Clavijo, DDS, MS, PhD/Paulo Fernando Mesquita de Carvalho, DDS, MS/Robert Carvalho da Silva, DDS, MS, PhD/Julio Cesar Joly, DDS, MS, PhD/Luis Alves Ferreira, CDT/Victor Humberto Orbegoso Flores, DDS, MS, PhD

Reproduction of Natural Vivid Appearance in Porcelain Restorations 131Part 2: The Essence of the Internal Staining TechniqueNaoto Yuasa, RDT

Fluorescence: Clinical Evaluation of New Composite Resins 145 Fernando Rey Duro, DDS, MS/Joana Souza Andrade, DDS, MS/Sillas Duarte, Jr, DDS, MS, PhD

Smile Reconstruction: Esthetic and Functional Rehabilitation of a Patient 157with Dentinogenesis Imperfecta Using Lithium Disilicate Glass-CeramicOliver Brix, MDT/Daniel Edelhoff, CDT, Dr Med Dent, PhD

Micro and Macro Dental Esthetics: The Key to Smile Individualization 173Ivan Contreras Molina, DDS, MS/Cláudia Ângela Maziero Volpato, DDS, MS, PhD/Luiz Narciso Baratieri, DDS, MS, PhD

Visagism: The Art of Dental Composition 187Braulio Paolucci, DDS/Marcelo Calamita, DDS, MS, PhD/Christian Coachman, DDS, CDT/Galip Gürel, DDS, MS/Adriano Shayder, CDT/Philip Hallawell

Porcelain Buildup Inspired by Nature 201Domenico Cascione, CDT, BS/Tzur Gabi, DMD/Jack Goldberg, DDS/Alireza Moshaverinia, DDS, MS, PhD/Mamaly Reshad, BDS, DDS, MSc

Customized Treatment for Esthetic Success: A Case Report 209Stefano Inglese, CDT

Chipping Occurrence in Zirconia-Based Prostheses 225Francis Cunha Lima, DDS/Luiz Narciso Baratieri, DDS, MS, PhD/Renan Belli, DDS, MS, PhD

Volume 35

PUBLISHERH.W. Haase

EXECUTIVE VICE-PRESIDENTWilliam G. Hartman

JOURNAL DIRECTORLori A. Bateman

PRODUCTION EDITORPatrick Penney

ADVERTISING/EDITORIAL/ SUBSCRIPTION OFFICEQuintessence Publishing Co, Inc4350 Chandler DriveHanover Park, Illinois 60133Phone: (630) 736-3600Toll-free: (800) 621-0387Fax: (630) 736-3633E-mail: service@quintbook.com

Website: http://www.quintpub.comQDT is published once a year by Quintessence Publishing Co, Inc, 4350 Chandler Drive, Hanover Park, Illinois, 60133. Price per copy: $118.

MANUSCRIPT SUBMISSIONQDT publishes original articles covering dental laboratory techniques and meth-ods. For submission information, contact Lori Bateman (lbateman@quintbook.com).

Copyright © 2012 by Quintessence Pub-lishing Co, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including pho-tocopying, recording, or any information and retrieval system, without permission in writing from the publisher. The publisher assumes no responsibility for unsolicited manuscripts. All opinions are those of the authors. Reprints of articles published in QDT can be obtained from the authors.

Permission to photocopy items solely for internal or personal use and for the internal or personal use of specifi c clients is granted by Quintessence Publishing Co, Inc, for libraries and other users registered with the Copyright Clearance Center (CCC) Transac-tion Reporting Service, provided that the base fee of $5 per article plus $.10 per page is paid directly to the CCC, 222 Rosewood Drive, Danvers, MA 01923 (www.copyright.com). Identify this publication by including with your payment the fee code: 0-86715-375-0/12 $5 + $.10.

Printed in ChinaISSN 0896-6532 / ISBN 978-0-86715-562-4

Cover photograph by Dudu Medeiros

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SCOPIN DE ANDRADE ET AL

QDT 2012 36

The wax-up of the fi nal restoration was fabricated on the modifi ed master cast (Fig 15). Six laminate ve-neers were injected with a high-translucency LDGC ingot (IPS e.max Press, Ivoclar Vivadent). A careful di-vesting process was carried out in two steps: rough divesting with polishing beads at a pressure of 4 bar (60 psi) and fi ne divesting with the same material at 2 bar (30 psi). Sprues were cut off using a diamond disk. Any morphologic corrections and marginal adaptation were performed, and the veneers were adjusted on the solid master cast. Marginal adaptation was checked on the sectioned cast.

The restorations were stabilized for occlusal adjust-ments, and confi rmation of the anterior guidance was

obtained in the wax-up. Final anatomy and morphol-ogy were also determined at this time (Fig 16a).

With the fi nal morphology defi ned, stains were ap-plied to achieve life-like characteristics. For example, blue stain was used for the incisal edge and interprox-imal areas, while white stain was used for the mam-melons. The veneers were then baked. Glass powder was used to protect the stained surface, and superfi -cial gloss was applied using a rubber wheel and pum-ice powder. The thin veneers were checked again in the master cast and delivered to the clinician (Figs 16b to 16f).

15a 15b

Figs 15a and 15b Master cast with the fi nal wax-up.

Figs 15c and 15d Wax sprues in position for the investing procedure.

15c 15d

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Ultimate Ceramic Veneers: A Laboratory-Guided Ultraconservative Preparation Concept

QDT 2012 37

Fig 16a Laminate veneers adapted to the master cast before staining and glazing.

Figs 16b to 16d Final restorations on the solid master cast after polishing.

Figs 16e and 16f The fi nal veneers were kept very thin.

16a

16b

16c

16e

16d

16f

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QDT 2012 113

Today, esthetic restorative dentistry can offer smile reha-bilitations using a conservative approach with minimal re-moval of sound dental structures. The aim of this article is

to demonstrate a multidisciplinary, ultraconservative method of restoring the harmony of the smile.

CASE REPORT

The patient was extremely embarrassed of her smile, resulting in shyness and minimal social interaction. The initial clinical exam revealed diastema, congenitally missing maxillary lateral incisors with the canines located in the lateral incisor positions, and the primary maxillary canines still located in their original positions (Fig 1). These aspects created not only esthetic defi ciencies, but also malocclusion.1 Therefore, a multidisciplinary treatment was suggested to restore both esthetics and function.2

Victor Grover Rene Clavijo, DDS, MS, PhD1

Paulo Fernando Mesquita de Carvalho, DDS, MS2

Robert Carvalho da Silva, DDS, MS, PhD2

Julio Cesar Joly, DDS, MS, PhD2

Luis Alves Ferreira, CDT3

Victor Humberto Orbegoso Flores, DDS, MS, PhD4

Victor Grover Rene Clavijo, DDS, MS, PhD1

Paulo Fernando Mesquita de Carvalho, DDS, MS2

Robert Carvalho da Silva, DDS, MS, PhD2

Julio Cesar Joly, DDS, MS, PhD2

Luis Alves Ferreira, CDT3

Victor Humberto Orbegoso Flores, DDS, MS, PhD4

1 Professor, Advanced Program in Implantology and Restorative Dentistry, ImplantePerio Institute, São Paulo, Brazil.

2 Director, Advanced Program in Implantology, ImplantePerio Institute, São Paulo, Brazil.

3 Dental Technician, São Paulo, Brazil. 4 Associate Professor; Restorative Dentistry, Preventive, and Fixed Prosthodontics; Federal University of Alfenas School of Dentistry, Alfenas, Minas Gerais, Brazil.

Correspondence to: Dr Victor Clavijo, Rua Cerqueira Cesar, 1078 Indaiatuba, São Paulo, Brazil 13330-005. Email: clavijovictor@yahoo.com.br; www.implanteperio.com.br

Achieving Excellence in Smile Rehabilitation Using Ultraconservative Esthetic Treatment:

A Multidisciplinary Vision

Achieving Excellence in Smile Rehabilitation Using Ultraconservative Esthetic Treatment:

A Multidisciplinary Vision

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BRIX/EDELHOFF

QDT 2012 164

and in groups of three in the posterior and anterior regions, respectively. All wax copings were pressed ac-cording to the manufacturer’s guidelines. Anterior cop-ings were pressed with IPS e.max Press MO 0, while posterior teeth were pressed with IPS e.max Press LT A2. After pressing, divesting, and trial placement on

the master cast (Fig 15), the material’s precise render-ing of esthetic details and homogeneity are evident.

The anterior copings were shaped similarly to the provisionals by using a silicone key and individually layered IPS e.max Ceram (Fig 16). Figure 17 shows the fi nished, as yet unpolished anterior crowns in an

15

17a

17b

16

Fig 15 After placement of the copings on the master cast, only small details need to be corrected.

Fig 16 The posterior restorations were pressed with IPS e.max Press LT, and the anterior copings with IPS e.max Press MO 0.

Figs 17a and 17b Homogenous and accurate results after pressing.

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Esthetic and Functional Rehabilitation of a Patient with Dentinogenesis Imperfecta

QDT 2012 165

unsectioned solid cast. Incisal mass was added to the buccal surfaces of the premolars to create a smooth transition from canines to molars (Figs 18 to 21). The

ability to apply corrections to all components using layering porcelain makes the IPS e.max system very user friendly (Fig 22).

Fig 18 Predictable results for the anterior restorations were facilitated by the silicone key.

Fig 19 The anterior crowns before fi nal glaze fi ring.

Fig 20 A clear advantage of the IPS e.max system is the potential for corrections of the pressed crowns by add-ing incisal porcelain mass.

Fig 21 Double-stacked honeycomb sagger trays allow for higher placement in the oven and thus better control during fi ring.

Figs 22a and 22b The fi nished restorations on the cast demonstrating perfect shade match.

20

22a 22b

21

18 19

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RUTTEN/GAMBORENA/RUTTEN

QDT 2011 204

7

8

9a

9b

Fig 7 Horizontal bands added to the porcelain buildup to mimic the natural tooth structure and surface texture.

Fig 8 Internal aspect of the porcelain buildup.

Fig 9a and 9b Internal stain.

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Fluorescence: Clinical Evaluation of New Composite Resins

QDT 2012 205

11

12

13

Figs 10a and 10b Transparent and translucent porcelain buildup.

Fig 11 Transparent and translucent powders.

Fig 12 Surface texture added.

Fig 13 Final restorations on the cast prior to delivery.

10a

10b

Final porcelain buildup and characterization are carried out as mapped (Figs 10 to 12). Figure 13 shows the defi nitive restorations prior to delivery and Fig 14 in smile view upon delivery—satisfactory in terms of form, color, phonetics, and function.

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