Aarti Rajambigai

As restaura es dent rias est ticas precisam de corresponder ao tamanho, forma, tonalidade, textura e translucidez dos dentes naturais que est o a substituir. Embora a porcelana fundida com restaura es de cer mica tenha um longo historial de sucesso cl nico, t m substruturas met licas que podem levar a resultados est ticos n o ptimos. As restaura es cer micas podem ser concebidas com n cleos transl cidos com propriedades pticas correspondentes s denti es naturais. As crescentes exig ncias est ticas levaram a uma utiliza o generalizada de restaura es totalmente cer micas. A cer mica dent ria como a porcelana feldsp tica e a cer mica de vidro proporcionam resultados est ticos aceit veis contra um pilar n o descolorido devido sua transmiss o de luz. No entanto, a natureza fr gil da cer mica pode causar falhas de fadiga ap s uma carga c clica. A zirc nia exibe uma transforma o de fase tetragonal a monocl nica no arrefecimento, que acompanhada por um aumento de 3% a 5% no volume. Embora isto imponha tens es compressivas residuais e o consequente endurecimento da transforma o, tamb m resulta em microcrachaduras e propriedades mec nicas comprometidas.

Several materials have been used over the years for the fabrication of removable complete dentures (CD). Bone, wood, ivory, porcelain, metals and polymers have been utilized for the fabrication of CDs with Poly(methyl methacrylate) (PMMA) being the most widely used. The advancement in dental material technology led to the improvement in the fabrication method of PMMA denture bases. Various methods are available for the fabrication of PMMA CD bases using heat, auto, light, microwave polymerization, rapid prototyping or computer numeric control (CNC) milling. Denture base adaptation can be influenced by the amount of polymerization shrinkage that occurs during the processing method of fabrication. CAD/CAM dentures milled from prepolymerized PMMA acrylic resin blocks theoretically have reduced or no polymerization shrinkage. There have been no clinical studies, to date, that have compared retention values between milled and conventionally processed denture bases. CAD/CAM milled denture base (AvaDent). Each denture base was subjected to a vertical pulling force three times at 10-minute intervals.

L'adesione tra il dente e la protesi molto importante per la longevit della protesi. Da quando il composito ha fatto il suo ingresso in odontoiatria, gli agenti adesivi hanno acquisito una maggiore popolarit , poich l'adesione allo smalto e alla dentina di primaria importanza nell'odontoiatria restaurativa. Con l'introduzione della mordenzatura acida nella pratica clinica, sono stati sviluppati diversi agenti di adesione alla dentina per migliorare la qualit del restauro. Con l'obiettivo di semplificare la procedura di adesione, vari autori hanno cercato di sviluppare nuovi agenti adesivi, migliorando cos la qualit dell'adesione e, in ultima analisi, la durata del restauro. I nuovi sistemi adesivi possono essere attribuiti anche alla loro capacit di eliminare la sensibilit postoperatoria, migliorare il sigillo marginale e aumentare il flusso di resina nella fessura. Esistono diverse generazioni di agenti adesivi, con vantaggi e svantaggi propri. Gli agenti adesivi continuano a evolversi per soddisfare gli standard delle tendenze avanzate dell'odontoiatria. In questo libro abbiamo discusso in dettaglio le nuove generazioni di agenti adesivi e i loro recenti progressi nel campo della protesi dentaria.

Le collage entre la dent et la proth se est tr s important pour la long vit de la proth se. Depuis l'arriv e du composite en dentisterie, les agents de liaison ont gagn en popularit , car l'adh sion l' mail et la dentine est de premi re importance en dentisterie restauratrice. Avec l'introduction du mordan age l'acide dans la pratique clinique, divers agents de liaison la dentine ont t d velopp s pour am liorer la qualit de la restauration. Dans le but de simplifier la proc dure de collage, plusieurs auteurs ont tent de d velopper de nouveaux agents de collage, am liorant ainsi la qualit du collage et conduisant finalement une meilleure durabilit de la restauration. Les nouveaux syst mes de collage peuvent galement tre attribu s leur capacit liminer la sensibilit postop ratoire, am liorer l' tanch it marginale et favoriser l' coulement de la r sine dans la fissure. Il existe diff rentes g n rations d'agents de liaison, avec leurs propres avantages et inconv nients. Les agents de liaison ne cessent d' voluer pour r pondre aux normes des nouvelles tendances de la dentisterie. Dans ce livre, nous avons discut en d tail des nouvelles g n rations d'agents de liaison et de leurs r centes avanc es dans le domaine de la prosthodontie.

Der Verbund zwischen Zahn und Prothese ist f r die Langlebigkeit der Prothese sehr wichtig. Seitdem Komposit in der Zahnmedizin zum Einsatz kommt, haben Haftvermittler an Popularit t gewonnen, da die Haftung an Schmelz und Dentin in der restaurativen Zahnheilkunde von gr ter Bedeutung ist. Mit der Einf hrung der S ure tzung in die klinische Praxis wurden verschiedene Dentinhaftvermittler entwickelt, um die Qualit t der Restauration zu verbessern. Mit dem Ziel, das Haftverfahren zu vereinfachen, versuchten verschiedene Autoren, neue Haftvermittler zu entwickeln, die die Qualit t des Haftverbundes verbessern und letztlich zu einer l ngeren Haltbarkeit der Restauration f hren. Die neuen Adh sivsysteme sind auch in der Lage, die postoperative Sensibilit t zu beseitigen, den Randschluss zu verbessern und den Fluss des Kunststoffs in die Fissur zu f rdern. Es gibt verschiedene Generationen von Haftvermittlern, die jeweils ihre eigenen Vor- und Nachteile haben. Haftvermittler werden st ndig weiterentwickelt, um den Standards der fortschreitenden Trends in der Zahnmedizin gerecht zu werden. In diesem Buch haben wir die fortschreitenden Generationen von Haftvermittlern und ihre j ngsten Fortschritte auf dem Gebiet der Prothetik eingehend er rtert.

Rehabilitation of partially and completely edentulous patients with implant-supported prosthesis has become a widely accepted treatment option. The conventional Branemark system involves loading of the implants after 4-6 months of placement. This obvious disadvantage of the procedure leaves the patient with no teeth or with a removable temporary prosthesis, and hence, many patients, at times, do not choose this option at all. Dental implants, when placed in the basal bone, can be immediately loaded with teeth, as this bone is very strong, never gets resorbed throughout the life, and forms the stress-bearing part of our skeleton. Since the cortical walls around the extraction site are stable at the time of extraction, placement of implants into fresh extraction sockets is more successful than placement after few months. Basal implants are the devices of the first choice, whenever augmentations are part of an alternative treatment plan. The technique of basal implantology solves all problems connected with conventional implantology. It is a practitioner-oriented therapy, which meets the demands of the patients ideally.

Bonding between the tooth and the prosthesis is very much important for the longevity of the prosthesis. Ever since composite came into play in dentistry, bonding agents have gained a greater level of popularity, since adhesion to the enamel and dentin is of prime importance in the restorative dentistry. With the introduction of the acid etching into clinical practice, various dentin bonding agents were developed to improve the quality of the restoration. In the aim of simplifying the bonding procedure, various authors attempted to develop new bonding agents thereby improving the quality of the bonding and ultimately leading to improved durability of the restoration. The new adhesive systems also can be attributed to their ability to eliminate postoperative sensitivity, improve marginal seal and enhance the flow of resin into fissure. There are different generations in bonding agents, owing their own advantages and disadvantages. Bonding agents keep on evolving to meet the standards of the advancing trends of dentistry. In this book, we have discussed in detail the progressing generations of bonding agents and their recent advances in the field of Prosthodontics.