The prevalence of dentine hypersensitivity in Chinese adults.

Dentine hypersensitivity is a common oral problem. This study investigated the prevalence of dentine hypersensitivity in the adult population of Shanghai, China. A multi-stage, stratified, random sampling method was used to investigate the study population. A total of 2120 subjects were examined at 10 investigation points in Shanghai City. Subjects were divided into age groups (10 years per age group) and included the same number of male and female subjects in each group. Participants completed a dentine hypersensitivity questionnaire and underwent clinical examination. The diagnosis of dentine hypersensitivity was confirmed clinically as a sharp well-localised pain in response to administration of a blast of cold air from a triple syringe. Gingival recession of sensitive teeth was measured by a Williams periodontal probe. Among 2120 participants, 723 were diagnosed as having dentine hypersensitivity, indicating a prevalence of 34·1%. The male to female ratio of dentine hypersensitivity was 1:1·5. The prevalence of dentine hypersensitivity was highest in the 40- to 49-year age group at 43·9%. The number of teeth with dentine hypersensitivity was 3·2 per patient. Dentine hypersensitivity occurred predominantly in the premolars (49·6%), followed by the anterior teeth (30·5%). A total of 84·3% of dentine hypersensitive patients had gingival recession. The prevalence of dentine hypersensitivity in Shanghai adults was 34·1%, indicating that it is a common condition. Therefore, public education about the condition and effective treatment of dentine hypersensitivity are required.

Eficiência do laser e do verniz com flúor no tratamento da hipersensibilidade dentinária cervical / Efficiency of laser and fluoride varnish in the treatment of dentin cervical hypersensitivity

A hipersensibilidade dentinária cervical é um desconforto que acomete grande parte da população. O seu tratamento eficaz tem sido motivo de várias pesquisas, e a procura de um dessensibilizante ideal é o grande desafio. O objetivo deste estudo foi analisar e comparar a eficiência do diodo laser de baixa potência (GaAIAs) e do Verniz com flúor (Fluorniz) na redução e eliminação da sintomatologia dolorosa do referido processo. Concluiu-se que o diodo laser de baixa potência (GaAIAs) mostrou-se eficiente na eliminação da hipersensibilidade dentinária cervical e que o verniz com flúor não se mostrou eficiente, embora tenha sido capaz de reduzir o seu grau. O laser mostrou-se estatisticamente superior ao verniz com flúor no tratamento da hipersensibilidade dentinária cervical (α=0,05).

The dentin cervical hypersensitivity is an uncomfortableness that assails a huge part of the population. The efficient treatment is a point of several researches, and the pursuit of an ideal desensitizing is a big challenge. The objective of this research was analyze and compare the laser diode of low potency (GaAIAs) and the varnish with fluorine 5% (Flourniz) efficiency in reducing and eliminating the pain symptoms of this process. It may conclude that the laser diode of low potency (GaAIAs) was efficient in the dentin cervical hypersensitivity elimination, and that the varnish with fluorine (Flourniz) wasn't efficient, however it was able to reduce the hypersensitiveness degree. The laser was statistically better than varnish with fluorine (Flourniz) in dentin cervical hypersensitivity treatment (α= 0,05).