Verticalização de segundos molares inferiores com arcolingual modificado: relato de caso / Uprighting a lower second molars using lingual arch: case report

O arco lingual é um mantenedor de espaço fixo constituído de um arco passivo, que tangencia a face lingualdos dentes inferiores na altura do terço cervical. Suas extremidades são soldadas ou encaixadas na face lingual das bandas dos primeiros molares inferiores. Esse aparelho pode ser usado para permitir o alinhamento espontâneo dos dentes anteriores inferiores, controlar a posição dos primeiros molares permanentes inferiores, aumentar a ancoragem para realização de movimentos dentários e para verticalizar e corrigir giro versões de molares. O objetivo deste trabalho é demonstrar através do relato de um caso clínico a utilização do arco lingual soldado com extensões em forma de gancho para verticalização dos segundos molares inferiores impactados.Constatou-se que o arco lingual pode ser empregado com sucesso para verticalização de molares inferiores impactados mesialmente apresentando vantagens em relação aos outros métodos.

The lingual arch is a maintainer made up of a passive arch, which passes through the lower lingual side of theteeth leveling to the cervical third. The ends are welded or just fitted in the lingual side of the first inferior molaredge. This device can be used to allow a spontaneous alignment of inferior previous teeth; to take control ofthe lower permanent first molar position; to increase the anchorage for performance a dental movements andto straight up and correct rotated molars. This work aims to demonstrate thought report of one clinical case,the use of the welded lingual arch with hook-like extensions, in order to straight up the impacted lower secondmolars. It was noted that the lingual arch can be used with success at straighting up messially impacted lowermolars, providing advantages over the related procedures.

Evaluation of a computerized method for denture biofilm quantification: inter-examiner reproducibility.

PURPOSE: The objective of this work was to evaluate the accuracy and inter-examiner reproducibility of the computerized method Image Tool 2.02 (Windows, version 2.02, University of Texas Health Science Center, San Antonio, TX) in the quantification of complete denture biofilm. MATERIALS AND METHODS: Two hundred digital photographs of the internal surface of complete upper dentures with biofilm dyed in 1% neutral red were used. The photographs were burned to a CD and sent to two researchers who received practical training and written instructions on how to use the method; then, in a 20-day period, the stained biofilm on the internal surface was measured, and ten photographs were analyzed daily. Each examiner independently quantified the percentage of stained area on each photograph. The inter-examiner reproducibility (i.e., agreement) was estimated by calculating an intra-class correlation coefficient (ICC) based on an ANOVA mixed model (SPSS software, Chicago, IL). RESULTS: The ICC showed excellent agreement (ICC = 0.993, p < 0.001). The difference in the percentage of the stained area recorded by the two examiners was < or =1 point for 187 (93.5%) of the 200 photographs. CONCLUSIONS: The obtained results suggest that the computerized method aided by the Image Tool software (2.0) can be employed to quantify complete denture biofilm, seeing that it demonstrated inter-examiner reproducibility of the results.