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. 2008 Oct;1(3-4):104-15.
Epub 2009 Apr 20.

Aesthetic and functionality in fixed prosthodontic: sperimental and clinical analysis of the CAD-CAM systematic 3Shape

G DE Vico  1 , L Ottria, P Bollero, M Bonino, M Cialone, A Barlattani Jr, M Gargari
Affiliations

Aesthetic and functionality in fixed prosthodontic: sperimental and clinical analysis of the CAD-CAM systematic 3Shape

G DE Vico et al. Oral Implantol (Rome). 2008 Oct.

Abstract
in English, Italian

In the last 15 years the increasing aesthetic demand, push constantly industry and the clinical to entirely look for new solutions for the realization of all-ceramic crowns, with such characteristics to be used for both anterior and posterior restorations. The most greater contribution, in such sense derives from the finished progress in the computer sector, that have allowed the application of the technologies CAD-CAM, also in dentistry (2-5, 11). These systematics have allowed us to get "automatically" structures for dental prosthesis, starting from the scanning of the die and passing for an intermediary phase of computerized planning (CAD, computer aided design), through numerical control millers (CAM, computer aided manufacturing), enslaved to calculating the electronic that drives the movement of it. The aim of this work is therefore that to analyze and to describe the systematic computerized 3SHAPE verifying the degree of precision, through the analysis of the obtainable marginal closing with the zirconia frameworks.

Le sempre maggiori richieste estetiche spingono costantemente l’industria del settore e la ricerca clinica a cercare nuove soluzioni per la realizzazione di corone interamente in ceramica, con caratteristiche tali da poter essere utilizzate “tranquillamente” sia per la restaurazione dei settori anteriori che posteriori. Il contributo maggiore, in tal senso, deriva dai progressi compiuti nel settore informatico e delle macchine automatizzate, che hanno permesso l’applicazione delle tecnologie CAD-CAM anche nel campo odontoiatrico (–5, 11). Tali sistematiche consentono di ottenere “automaticamente” strutture per protesi dentali, a partire dalla scansione del moncone da laboratorio e passando per una fase intermedia di progettazione computerizzata (fase CAD), per mezzo di fresatrici a controllo numerico (fase CAM), asservite a calcolatori elettronici che ne guidano il movimento. Scopo del seguente lavoro è pertanto quello di analizzare e descrivere fase per fase la sistematica computerizzata 3SHAPE verificandone il grado di precisione, mediante l’analisi della chiusura marginale ottenibile con le cappette in zirconia.

Keywords: CAD-CAM; aesthetics; marginal adaptation; zircons 3shape.

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Figures

Figure 1
Figure 1
Biaxial flexural streght of dental ceramics.
Figure 2
Figure 2
Scanner D 250 3 Shape.
Figure 3
Figure 3
3shape software Dental Designer.
Figure 4
Figure 4
Milling machine.
Figure 5
Figure 5
3shape production cycle.
Figure 6
Figure 6
The patient, of male sex, healthy and not a smoker, reaches our observation reporting a typical symptomatology pulpitis of the tooth 1.2 (incisive side superior dx). The clinical examination and radiographic endorale put in evidence of an old composite reconstruction infiltrated and over flow of the element that showed besides a conoide morphology.
Figure 7
Figure 7
Rx after root canal terapy and reconstruction.
Figure 8
Figure 8
Temporary resin crown.
Figure 9
Figure 9
Tooth ready for precision impression.
Figure 10
Figure 10
Precision impression.
Figure 11
Figure 11
Master model.
Figures 12-13-14-15
Figures 12-13-14-15
CAD moments.
Figures 16-17
Figures 16-17
CAD moments.
Figure 18
Figure 18
Zirconia framework ready for ceramic.
Figure 19
Figure 19
Zirconia framework tested on master model.
Figure 20
Figure 20
Zirconia crown after cementation.
Figure 21
Figure 21
Models used in our study.
Figure 22
Figure 22
Scann spray.
Figure 23
Figure 23
CAD-design.
Figure 24
Figure 24
Zirconia frameworks.
Figure 25
Figure 25
Zirconia frameworks after cementation.
Figure 26
Figure 26
Models inglobed in epoxid resin.
Figure 27
Figure 27
Microtome.
Figure 28
Figure 28
Model sections.
Figure 29
Figure 29
Marginal area at 200 enlargements.
Figure 30
Figure 30
Marginal area at 50 enlargements.
See this image and copyright information in PMC

References

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