Critical pH in resting and stimulated whole saliva in groups of children and adults

Anderson, Paul; Hector, M.P.; Rampersad, Mindy

doi:10.1046/j.1365-263x.2001.00293.x

Cited by 93 publications

(79 citation statements)

References 22 publications

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“…It is promoted by carbonatebicarbonate, phosphate, and proteins systems, the most important buffering agent present in stimulated saliva [21,22]. The bicarbonate system is responsible for approximately 85% of salivary BC in the pH range from 7.2 to 6.8 [20,23].…”

Section: Discussionmentioning

confidence: 99%

Buffer Capacity of Saliva as a Function of Time after Consumption of Sugary, Sugar-Free and Probiotic Chewing Gums

Antunes¹,

Marinho²,

Garakis³

et al. 2015

Pesqui. bras. odontopediatria clín. integr.

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Objective: To determine the time required for pH buffering by saliva after use sugary(S), sugar-free (SF) and probiotic (P) chewing gums. Material and Methods: Saliva was collected from 12 volunteer dental students at UNESP São José dos Campos / SP, in order to determine salivary flow (SR) rate and initial buffering capacity (BC). Participants presenting BC>4.0 were invited to continue the research. Participants chewed different types of gum for 3 consecutive days, and saliva was collected at 0-1min, 1-5min, and 5-10min intervals. The time required to neutralize saliva pH after chewing the different types of gum was analyzed by RM ANOVA and Tukey's test (5%). Results: RM ANOVA revealed significant influence on the interaction effect (chewing gum and time) (statisticFdf(4.66) = 4.027, p = 0.0055 <0.05). According to Tukey's test, differences were observed in the following circumstances: for the 0-1 interval, BC of S differs from SF and P; BC of S differs from SF at 1-5 min and 5-10 min intervals; and, 0-1min interval differs from 1-5 min and 5-10 min intervals for both S and SF. Conclusion: Dentistry students showed no increased predisposition to dental caries with a specific type of chewing gum. Although time for pH recovery differed according to gum type, they were all above the critical range for enamel demineralization.

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Section: Discussionmentioning

confidence: 99%

Buffer Capacity of Saliva as a Function of Time after Consumption of Sugary, Sugar-Free and Probiotic Chewing Gums

Antunes¹,

Marinho²,

Garakis³

et al. 2015

Pesqui. bras. odontopediatria clín. integr.

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“…No entanto, a literatura revela maior fluxo salivar com estimulação em adultos quando comparados com crianças 12 . Este trabalho demonstrou que as crianças apresentavam índice CPO-D/ceo-d médio de 3,03.…”

Section: Discussionunclassified

“…A capacidade tamponante da saliva é um importante fator de resistência à cárie dental, e o reduzido fluxo salivar, que geralmente está associado a uma baixa capacidade tamponante, pode causar infecções da mucosa oral e periodontites 10 . Diversos trabalhos foram publicados relacionados à determinação da capacidade tamponante 3,4 e fluxo salivar 11,12 . No entanto, estes estudos em países em desenvolvimento são raros, apesar da sua importância.…”

Section: Introductionunclassified

Fluxo Salivar e Capacidade Tamponante da Saliva como Indicadores de Susceptibilidade à Doença Cárie

Bretas¹,

Rocha²,

Vieira³

et al. 2008

Pesq Bras Odontoped Clin Integr

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RESUMO DESCRIPTORS DESCRITORESSaliva; Índice CPO-D; Cárie dentária. Saliva; DMF Index; Dental caries. Flow Rate and Buffering Capacity of the Saliva as Indicators of the Susceptibility to Caries DiseaseObjective: To correlate salivary indices with the DMFT/dmft index, which is an indicator of caries prevalence, and the adoption of educational measures for oral health promotion. Method: Saliva samples were collected from 56 children of both genders (28 girls and 28 boys), aged 5 to 7 years at the Santana de Itatiaia Municipal School. Prior to saliva collection, the research project was explained to the parents and/or guardians and their written consent was obtained for enrolment of the children in the study. Saliva was collected by masticatory stimulation. Thereafter, the volume of saliva was recorded by the operator and the salivary flow rate was calculated (mL/5 min) for each participant. The buffering capacity of the saliva of each sample was determined by titration, measuring the volume of 0.1 N lactic acid required for decreasing the salivary pH from 6.9 to 3.7.Results: Among the studied children, 23% presented a salivary flow rate below the mean value. In 62% of the children, the values of the buffering capacity of the saliva classified them as susceptible to caries disease. In the present study, there was a moderate correlation (p=0.79) between the buffering capacity of the saliva and DMFT/dmft, confirming the complex etiology of the caries disease. Conclusion: Flow rate and buffering capacity of saliva should be analyzed together with other factors for determining the cariogenic potential. The findings of this study indicate the need of intervening in order to promote of educational measures of prevention and health promotion. Objetivo: Correlacionar índices salivares com o índice CPO-D/ ceo-d que é indicativo da prevalência da cárie e a adoção de práticas educativas para promoção de saúde bucal.Método: A coleta da saliva foi realizada na Escola Municipal Santana de Itatiaia em crianças de ambos os sexos (28 do sexo feminino e 28 do sexo masculino) com idade variando entre 5 e 7 anos, totalizando 56 participantes. Para a realização da coleta foi realizada uma reunião com os pais e/ou responsáveis pela crianças para esclarecimento do projeto e autorização da participação das crianças. A saliva foi coletada por estímulo pela mastigação. Após esse procedimento, o operador anotou o volume de saliva formada e para cada participante foi calculado o fluxo salivar (ml/5min). A capacidade tampão da saliva de cada amostra foi determinada por Titulometria, medindo-se o volume de ácido lático 0,1 N necessário para abaixar o pH salivar de 6,9 ao pH de 3,7.

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“…When considering the effect of age on the oral environment, one study comparing the salivary content of children (6-12 years) and adults (19-44 years) found that calcium concentrations were lower in children 7 . Concentrations of calcium and phosphate in saliva have significant influence on the protective mechanisms of dental hard tissues within the oral environment.…”

Section: Agementioning

confidence: 99%

Predicting improvement of postorthodontic white spot lesions

Kim

Katchooi

Bayiri

et al. 2016

American Journal of Orthodontics and Dentofacial Orthopedics

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Introduction:It is well known that patients undergoing orthodontic treatment are at greater risk for developing white spot lesions (WSL). Although prevention of WSLs is always the goal, they continue to be a common sequela in patients undergoing orthodontics. For this reason, understanding the patterns of WSL improvement is of great importance to both the patient and the provider. Previous studies have shown some lesions exhibiting significant improvement, while other lesions show limited to no improvement. Our study sought to identify specific patient and tooth-related factors that are most predictive for improvement. Methods: Patients aged 12-20 years, who had at least 1 WSL that developed during orthodontic treatment, were recruited from private dental and orthodontic offices. They all had their braces removed less than 2 months prior to enrollment into the study. Photos were taken at enrollment and 8 weeks later. Paired photographs from the 2 time points were blindly assessed for improvement in appearance by a panel of 5 dental professionals, and by 2 sets of evaluators for changes in surface area and appearance at the individual tooth level. Results: One hundred and one subjects were included in this study. Patient age, brushing frequency, and larger percent surface area affected were associated with increased improvement of lesions. Central incisors showed greater improvement when compared to lateral incisors. Increased time since appliance removal and increased length of orthodontic treatment were associated with decreased improvement. Gender, oral hygiene status, retainer type, location of the lesion (gingival, middle, incisal), presence of staining, and lesion diffuseness were not found to be predictive for improvement. Conclusions: Of the various patient and tooth-related factors examined; age, time since appliance removal, length of orthodontic treatment, tooth type (central vs. lateral incisor), WSL surface area, and brushing frequency had significant associations with WSL improvement.

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Critical pH in resting and stimulated whole saliva in groups of children and adults

Abstract: The results of this study show that from thermodynamic considerations alone, there is increased risk of demineralization in children compared with adults.

Cited by 93 publications

References 22 publications

Buffer Capacity of Saliva as a Function of Time after Consumption of Sugary, Sugar-Free and Probiotic Chewing Gums

Buffer Capacity of Saliva as a Function of Time after Consumption of Sugary, Sugar-Free and Probiotic Chewing Gums

Fluxo Salivar e Capacidade Tamponante da Saliva como Indicadores de Susceptibilidade à Doença Cárie

Predicting improvement of postorthodontic white spot lesions

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