Qualitative taste impairment following the application of chlorhexidine mouthrinses

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Quality-specific taste impairment following the application of chlorhexidine digluconate mouthrinses.

Although chlorhexidine has been widely used in the prevention and treatment of gingivitis, its effects on taste sensation have not been well studied. The purpose of the present study was to evaluate taste alterations following regular applications of 0.2% chlorhexidine mouthrinses. 24 healthy and non-smoking clinical instructors, dental assistants and dental students were divided into 3 groups after having reached a status of clinical gingival health by 4 weeks of supervised oral hygiene procedures. Following this, they were asked to abolish all mechanical oral hygiene for a period of 14 days, during which time they rinsed twice daily with different mouthrinses. Group A rinsed with a 0.2% chlorhexidine solution, group B served as control and utilized a 0.001 molar solution of quinine hydrochloride as a placebo rinse. A second control group (C) rinsed with distilled water. At days -3 and -2, as well as at days 1, 2, 13 and 14 of the experimental period, and 1 and 2 days after cessation of the rinsing, taste sensitivity was evaluated by a magnitude estimation, suprathreshold scaling procedure for the 4 taste qualities--sweet, salty, sour and bitter. 6 different concentrations of each of sucrose, sodium chloride, citric acid and quinine hydrochloride were utilized. Magnitude estimations of the perceived intensities of each series of test solutions were calculated. The analysis of co-variance revealed significant differences at the short-term and treatment-related suprathreshold scaling responses between both control groups (B, C) and the test group (A) for the sodium chloride magnitude estimation function. However, no significant inter-group differences in the magnitude estimation function were found for the remaining taste qualities.(ABSTRACT TRUNCATED AT 250 WORDS)link_to_subscribed_fulltex

Preferências por alimentos doces e cárie dentária em pré-escolares Taste preference for sweetness and caries prevalence in preschoolchildren

OBJETIVO: Avaliar as preferências pelo sabor doce e sua associação com as condições socioeconômicas e a prevalência de cárie dentária em pré-escolares. MÉTODOS: A amostra foi composta por 572 crianças de 4 a 6 anos, matriculadas em pré-escolas, dividida em estratos socioeconômicos segundo a procedência (um bairro central, um periférico e Programa de Desfavelamento). Estudo transversal, foi desenvolvido em duas etapas. A preferência pelo sabor doce foi avaliada através do Sweet Preference Inventory modificado. A concentração das soluções variou de 0 a 400 g/litro (0 a 1,17 molar). Foi utilizado o índice ceos para verificar a prevalência de cárie. RESULTADOS: Foram encontradas diferenças estatisticamente significantes entre as crianças do Programa de Desfavelamento e dos demais grupos na preferência pelo sabor doce e no consumo de açúcar, bem como associação entre a procedência e o percentual de crianças livres de cárie, sendo o grupo do Desfavelamento o menos favorecido (p<0,05). CONCLUSÃO: Os achados sustentam a hipótese de que o nível socioeconômico influencia a preferência por açúcar e esta, por sua vez, está associada à prevalência de cárie dentária na dentição decídua.<br>OBJECTIVE: To assess the preference for sweetness among preschool children and differences between less and more deprived groups. In addition, to assess whether sweet taste preference was associated with presence of caries. METHODS: The sample was composed by 572 preschool children aged between 4 and 6, distributed in three day nurseries of varied socioeconomic background. Cross-sectional study developed in two steps. Preference for sweetness was assessed using a modified version of the Sweet Preference Inventory. The solutions varied in sugar concentration from 0 to 1,17 molar (0 to 400 g / litre). The presence of caries was assessed using the defs index. The socioeconomic status of the sample was classified according to the origin of domicile. RESULTS: The variation in preference for sweetness in our sample was too small. Most children preferred the sweetest juice. This reduced the ability of this variable to explain variation in caries prevalence. Despite this limitation, our results showed that socioeconomic level influenced preference for sweetness, which in turn was associated with caries prevalence. CONCLUSION: The socioeconomic status influence the sweetness preference and this, in turn, is associated with the dental caries prevalence

Odor identification in young and elderly African-Americans and Caucasians

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72304/1/j.1754-4505.1995.tb00501.x.pd