Force decay of latex and non-latex intermaxillary elastics: a clinical study.

OBJECTIVE: To evaluate force decay between intermaxillary orthodontic elastics with and without latex in the oral medium at different time intervals. MATERIALS AND METHODS: Intermaxillary orthodontic elastics with and without latex [1/8″ (3.2mm), 1/4″ (6.35mm), and 5/16″ (7.94mm) in diameter] were evaluated 'clinically'. For this purpose, 26 patients served as hosts for the elastics during the evaluation period. Initially, 52 thermoplasticized plates 1mm thick were made according to the patients' mould. Then, the orthodontic accessories were bonded to the plates, which kept the elastics distended throughout the experimental period. The force released by the elastics at this distance was evaluated at 0, 12, and 24 hours. Statistical analyses were performed using the Friedman, Wilcoxon, and Mann-Whitney tests (significance set at 5 per cent). RESULTS: Elastics with and without latex presented with permanent deformation and increasing internal diameter throughout the entire period. Elastics with latex, 1/8″ (3.2mm) in diameter, sustained higher levels of force than those without latex. Elastics measuring 1/4″ (6.35mm) and 5/16″ (7.94mm) in diameter without latex sustained higher levels of force at 0 and 12 hours compared to those with latex. At the end of the experiment (24 hours), no significant difference was observed between the elastics (P > 0.05). LIMITATIONS: This study only evaluated three time intervals: 0, 12, and 24 hours. If the behaviour was evaluated at different time intervals, different behaviours of these materials might be revealed. CONCLUSION: Elastics with latex 1/8″ in diameter sustained a higher level of final force than the corresponding type without latex. The 1/4 and 5/16 elastics with and without latex were not different at the end of the evaluation period.

Inter-relação da periodontia e outras especialidades odontológicas – revisão deliteratura / Interrelation between Periodontics and others dental specialties – Literature review

A Odontologia vem se desenvolvendo muito nos últimos anos e tem mostrado uma preocupação cada vez maior com a promoção da saúde do paciente, realização de diagnósticos mais corretos, atuação na prevenção e tratamentos mais modernos e efetivos priorizando a saúde e satisfação do paciente e segurança e conhecimento para o profissional. Este estudo, de natureza bibliográfica, tem como objetivo revisar a literatura de forma a elucidar a inter-relação entre a Periodontia e outras especialidades odontológicas, como a Prótese, a Ortodontia e a Dentística. O material empírico teve como base publicações oriundas de livros e artigos produzidos de 1989 a 2011, constou como base de dados o Scielo, LILACS e Bireme, utilizando os seguintes descritores: Dentística, Periodontia e Prótese Dentária. Conclui- se, portanto, que é fundamental a existência de uma parceria concreta e ativa entre as diversas áreas de especialidades odontológicas, em especial, com a Periodontia, já que esta representa a base do tratamento odontológico, por ser o alicerce de sustentação do dente ou do implante dentário

Dentistry has developed in recent years, and has shown an increasing concern with the promotion of health of the patient, performing more accurate diagnosis, prevention and treatment work in the most modern and effective prioritizing health and patient satisfaction and safety and knowledge for the professional. This study, bibliographic in nature, aims toreview the literature in order to elucidate the interrelationship between periodontal and other dental specialties, such as Periodontics, Orthodontics and Dentistry. The empirical material is formed in publications from books and articles produced from 1989 to 2011, as a database comprised the LILACS, BIREME and SciELO, using the following keywords: Dentistry, Periodontics, Dental Prosthesis. We conclude, therefore, it is essential to have a concrete and active partnership between the various areas of dental specialties, in particular, Periodontics, as this represents the basis of dental treatment, to be the bedrock of support of the tooth or dental implant.