RESUMO
Erosive tissue loss is part of the physiological wear of teeth. Clinical features are an initial loss of tooth shine or luster followed by flattening of convex structures; with continuing acid exposure, concavities form on smooth surfaces, or grooving and cupping occur on incisal/occlusal surfaces. Dental erosion must be distinguished from other forms of wear, but can also contribute to general tissue loss by surface softening, thus modifying physical wear processes. The determination of dental erosion as a condition or pathology is relatively easy in the case of pain or endodontic complications, but is ambiguous in initial stages and in terms of function or esthetics. The impact of dental erosion on oral health is discussed. However, it can be concluded that in most cases dental erosion is best described as a condition, with the acid being of nonpathological origin.
Assuntos
Erosão Dentária/classificação , Atitude Frente a Saúde , Necrose da Polpa Dentária/etiologia , Estética Dentária , Humanos , Saúde Bucal , Doenças Periapicais/etiologia , Pulpite/etiologia , Erosão Dentária/complicações , Erosão Dentária/fisiopatologia , Desgaste dos Dentes/classificação , Odontalgia/etiologiaRESUMO
OBJECTIVE: To compare the efficacy of a new potassium oxalate (KO)-containing mouthrinse [Listerine® Advanced Defence Sensitive (LADS)] in reducing dentine permeability and occluding open dentinal tubules versus other desensitising products. METHODS: The permeability of acid-etched dentine disks was measured by hydraulic conductance; dentine surfaces were examined by scanning electron microscopy and energy-dispersive X-ray spectroscopy. The KO concentration was optimised for tubule occlusion by screening formulations containing 0.0-2.0% KO (n=5 disks per concentration). The optimal formulation was compared with five commercial products with non-oxalate occlusion technologies. After establishing the baseline permeability of acid-etched dentine disks, disks (n=6 per product) were randomly treated with the desensitising products (12 treatments, each 60 s, alternated with distilled-water rinses) and permeability was measured at intervals. Occluded disks were acid challenged. All experiments were conducted at room temperature. An unpooled, two-tailed t test was performed to assess between-treatment differences in relative residual permeability. RESULTS: The optimal concentration of KO in LADS was 1.4%, which provided ≈ 100% reduction in dentine permeability after nine treatments. Only LADS reduced permeability to zero and was significantly more effective in reducing dentine permeability than the other products (p ≤ 0.033 vs all other test products). All products partially occluded dentine. The occlusion associated with LADS was substantially more stable in resisting acid challenge versus Colgate® Sensitive Pro-Relief mouthrinse (p=0.054) and significantly more stable versus all other test products (p ≤ 0.045), as determined by dentine permeability. CONCLUSION: LADS was significantly more effective in occluding open dentinal tubules versus other desensitising products. CLINICAL SIGNIFICANCE: LADS provides fast, complete and stable intratubular occlusion of patent dentinal tubules.
Assuntos
Dessensibilizantes Dentinários/uso terapêutico , Antissépticos Bucais/uso terapêutico , Ácido Oxálico/uso terapêutico , Acetatos/uso terapêutico , Condicionamento Ácido do Dente/métodos , Anatomia Transversal , Arginina/uso terapêutico , Carbonato de Cálcio/uso terapêutico , Química Farmacêutica , Ácido Cítrico/farmacologia , Dentina/efeitos dos fármacos , Dentina/ultraestrutura , Dessensibilizantes Dentinários/química , Permeabilidade da Dentina/efeitos dos fármacos , Fluoretos/uso terapêutico , Vidro , Humanos , Ácido Láctico/farmacologia , Microscopia Eletrônica de Varredura , Antissépticos Bucais/química , Ácido Oxálico/química , Fosfatos/uso terapêutico , Camada de Esfregaço , Espectrometria por Raios X , Estrôncio/uso terapêutico , Fatores de Tempo , Fluoretos de Estanho/uso terapêutico , Erosão Dentária/fisiopatologia , Cremes Dentais/uso terapêuticoAssuntos
Suplementos Nutricionais , Alimento Funcional , Saúde Bucal , Cárie Dentária/fisiopatologia , Cárie Dentária/prevenção & controle , Humanos , Doenças Periodontais/fisiopatologia , Doenças Periodontais/prevenção & controle , Fatores de Risco , Erosão Dentária/fisiopatologia , Erosão Dentária/prevenção & controleRESUMO
OBJECTIVE: To evaluate unstimulated and stimulated salivary characteristics of 12-13-year-old schoolchildren with and without dental erosion. DESIGN: The subjects were sixty schoolchildren from 12-13 years old (30 boys and 30 girls) with dental erosion and sixty age- and sex-matched controls. Unstimulated and stimulated whole saliva were collected. Flow rate, pH level, buffering capacity, bicarbonate, buffer base, calcium, phosphorus and urea concentrations of whole saliva were measured. All data were analysed using SPSS 13.0. RESULTS: The flow rate, pH, bicarbonate, buffer base, calcium, phosphorus, and urea of unstimulated and stimulated saliva did not differ significantly between the dental erosion group and the control group (P>0.05). The stimulated salivary buffering capacity did not vary between the two groups (Fisher's exact test, P>0.05). CONCLUSION: The salivary characteristics are similar amongst 12-13-year-old schoolchildren with and without dental erosion in Southern China.
Assuntos
Saliva/química , Saliva/metabolismo , Erosão Dentária/fisiopatologia , Adolescente , Bicarbonatos/análise , Soluções Tampão , Cálcio/análise , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , Criança , China , Estudos Transversais , Feminino , Humanos , Concentração de Íons de Hidrogênio , Masculino , Fósforo/análise , Estimulação Física , Taxa Secretória , Estimulação Química , Ureia/análiseRESUMO
OBJECTIVE: To evaluate the effect of acidic medicines (Klaricid(®), Claritin(®), and Dimetapp(®)) on surface enamel in vitro. METHODS: Enamel blocks (n=104) were randomly distributed into two groups: G1 (pH-cycling simulating physiological oral conditions) and G2 (erosive conditions). Each group was divided into four subgroups, three to be immersed in the medicines and the control in deionized water. Specimen surfaces were evaluated for roughness and hardness at baseline and again after the in vitro experimental phase, which included 30 min immersions in the medicines twice daily for 12 days. Scanning electron microscopy (SEM) was also performed after the in vitro experimental phase. RESULTS: All medicines produced a significant reduction in hardness in G1 after 12 days (P<0.05). The three medicines promoted greater roughness after both pH-regimens - G1 and G2 (P<0.01), except for Claritin in G1. Scanning electron microscopy analysis showed erosive patterns in all subgroups. Dimetapp(®) showed the most erosion and Klaricid(®) the least, in both groups. CONCLUSION: Dimetapp(®) (lowest pH and viscosity) and deionized water (control) showed the most pronounced erosive patterns. Klaricid(®) (highest pH and viscosity) presented an in vitro protective effect against acid attacks perhaps due to its mineral content and viscosity.
Assuntos
Antibacterianos/farmacologia , Esmalte Dentário/efeitos dos fármacos , Medicamentos para o Sistema Respiratório/farmacologia , Animais , Antialérgicos/química , Antialérgicos/farmacologia , Antibacterianos/química , Bromofeniramina/química , Bromofeniramina/farmacologia , Cálcio/química , Bovinos , Ácido Cítrico/química , Claritromicina/química , Claritromicina/farmacologia , Esmalte Dentário/ultraestrutura , Combinação de Medicamentos , Fluoretos/química , Dureza , Concentração de Íons de Hidrogênio , Loratadina/química , Loratadina/farmacologia , Microscopia Eletrônica de Varredura , Fósforo/química , Pseudoefedrina/química , Pseudoefedrina/farmacologia , Distribuição Aleatória , Medicamentos para o Sistema Respiratório/química , Soluções/química , Temperatura , Fatores de Tempo , Erosão Dentária/patologia , Erosão Dentária/fisiopatologia , ViscosidadeRESUMO
Erosive tissue loss is part of the physiological wear of teeth. Clinical features are an initial loss of tooth shine or luster, followed by flattening of convex structures, and, with continuing acid exposure, concavities form on smooth surfaces, or grooving and cupping occur on incisal/occlusal surfaces. Dental erosion must be distinguished from other forms of wear, but can also contribute to general tissue loss by surface softening, thus enhancing physical wear processes. The determination of dental erosion as a condition or pathology is relatively easy in the case of pain or endodontic complications, but is ambiguous in terms of function or aesthetics. The impact of dental erosion on oral health is discussed. However, it can be concluded that in most cases dental erosion is best described as a condition, with the acid being of nonpathological origin.