Reabilitação Estética Anterior: a Propósito de um Caso Clínico

ResumoA presença de múltiplas lesões dentárias compromete significativamente a função e a estética do paciente. A prevalência de lesões cervicais (cariosas e não cariosas) é grande em adultos e a sua severidade aumenta com a idade.Com este trabalho pretende-se abordar as lesões classes V, identificar os diferentes factores etiológicos, caracterizálas e diagnosticá-las, e ainda, apresentar o protocolo de tratamento.De acordo com a revisão bibliográfica efectuada e o caso clínico apresentado, concluiu-se que as lesões classe V apresentam uma etiologia multifactorial e que o sucesso do tratamento restaurador está directamente relacionado com a eliminação da causa, bem como com a escolha do material restaurador adequadoAbstractThe presence of multiple dental lesions significantly compromises the function and the aesthetic of the patient. The prevalence of cervical lesions (carious and noncarious) is high in adults and its severity increases with the age.With this work it is intended to approach the dental lesions class V, to identify the different etiologic factors, to characterize and to diagnosis them, and to present the treatment protocol.In accordance with the bibliographical revision and the presented clinical case, it was concluded that the dental lesions class V present an multifactorial etiology and that the success of the restoring treatment is directly related with the elimination of the cause, as well as with the choice of the adjusted restoring material

Autogenous tooth transplantation : evaluation of pulp tissue regeneration

Objective: The aim of this study was to assess the pulp survival that occur in transplants of autologous teeth, by comparing two surgical techniques: the conventional technique (autotransplantation for newly formed alveoli), and an alternative technique, (autotransplants for alveoli in the initial phase of healing). In each surgical techniques were applied, randomly, either saline solution or Emdogain ®. Study Design:The study group comprised 26 patents, in which 28 teeth were transplanted to recipient sockets prepared mechanically. Of the 28 teeth transplanted, 4 were intentional replants, and of the remainer, 11 had the apex closed and 13 open. The mean age at the time of transplantation was 22.34±8.14 years (mean ± SD). The transplantation were performed by the same operator, with the informed consent of the patient and authorized by the ethical committee of the hospital. Clinical and radiological examinations were performed during 24 to 65 months (48±12.96; MED±SD), from 10 days, 1 month, 3 months, 6 months and annually to 5.6 years. Results: Only two transplanted teeth were lost, due persistent apical periodontitis, and one transplanted patient with open apex missed the treatment. In the teeth with pulp, we needed to perform root canal therapy in 9. In the 73% of the teeth with closed apex, we needed to perform root canal treatment, with no statistically significant difference found among closed apex and root canal therapy (p=0.083). In only 8% of the teeth with open apex did we need to perform root canal treatment, with an association between open apex and root canal therapy (p=0.0002). The overall success rate was 98% with significant difference for losses (p=0.0001). Conclusions: Although not a frequent procedure, it was concluded that autotransplanted teeth, performed with appropriate surgical care had a good prognosis, and can render a very useful service to the patients. © Medicina Oral S. L

Sealing efficacy of system B versus Thermafil and Guttacore obturation techniques evidenced by scintigraphic analysis

This study compared root canal sealing ability, filled by Continuous Wave compaction and two carrier-based obturation systems, using the nuclear medicine approach. Fifty-five single-rooted extracted teeth were selected. The crowns were sectioned and each tooth was instrumented using rotary Protaper® Universal system. The roots were divided into 3 experimental groups and two control groups. Forty-five root canals were filled, using Continuous Wave, GuttaCore or Thermafil system and TopSeal sealer. Ten teeth were used as control. On the 7th days the apices were submersed in a solution of sodium pertechnetate 99mTc for 3 hours and the radioactivity was counted. Although apical leakage in the Continuous Wave group was lower compared with GuttaCore and Thermafil groups, there was no statistical difference (p>0.05). System B, GuttaCore and Thermafil techniques showed a similar sealing effect

Estudo comparativo da biodistribuição do gálio e do mercúrio de duas ligas metálicas para restauração dentária.

Given the controversy that has dogged mercury amalgams since they were first used, other restoration products have been recommended as substitutes. The replacement of mercury with gallium gives of a metal alloy whose advantages in terms of physical and chemical properties, if improved, could dethrone the more current mercury amalgams. There is only one problem; the gallium alloys show less resistance to corrosion and this limits their clinical life. Mercury amalgams have been exhaustively studied and have been used in experimental, and often in clinical, comparative studies with gallium amalgams. Thus, there is no novelty attached to designing a clinical trial to study the corrosion of these latter amalgams since it could simply confirm, or not, the results presented by other authors. This was, indeed, our aim on undertaking this study. However, although studies on the biodistribution of mercury have been carried out on mercury amalgams, we have not found any reference to similar ones being conducted on gallium amalgams. The objective of our animal experimentation has thus been to compare the biodistribution of each metal, both in terms of time and with one another