Obesity and periodontitis: systematic review and meta-analysisObesidade e periodontite: revisão sistemática e meta-análise

. Helped to design the protocol and supervised all phases of the study, responsible for intellectual and scientific content of the study, critical revision. ABSTRACT PURPOSE:To evaluate oral changes, such as dental caries, periodontal disease, dental wear and salivary flow in bariatric patients. Fifty four obese patients who underwent bariatric surgery were studied before (n=54), up after 3 months (n=24) and 6 months (n=16). METHODS: Indices for evaluating oral conditions were: DMFT, CPI, DWI and salivary flow. OIDP questionnaire was used to assess the impact of oral health on quality of life. ANOVA and Spearman correlation were used (p<0.05). RESULTS: DMFT was 17.6±5.7, 18.4±4.1 and 18.3±5.5 (P>0.05), presence of periodontal pockets in 50%, 58% and 50% of patients (p>0.05), tooth wear in dentin present in 81.5%, 87.5% and 87.5% before, 3 and 6 months after surgical treatment respectively. There were differences between the three periods for prevalence and severity of dental wear (p = 0.012). Salivary flow was 0.8±0.5 ml/min before surgery, 0.9±0.5 ml/min for 3 months and 1.1±0.5m/min for 6 months (p>0.05). The impact of oral health on quality of life decreased with time after bariatric surgery (p= 0.029). CONCLUSION: The lifestyle changes after bariatric surgery and these changes may increase the severity of pre-existing dental problems. However, these alterations in oral health did not influence the quality of life. Key words: Oral Health. Tooth Erosion. Dental Caries. Xerostomia. Obesity. Bariatric Surgery. RESUMO OBJETIVO:Avaliar alterações bucais, como cárie dentária, doença periodontal, desgaste dentário e fluxo salivar, em pacientes bariátricos. MÉTODOS: Cinquenta e quatro pacientes obesos, submetidos à cirurgia bariátrica, tiveram suas condições bucais avaliadas antes (n=54), aos 3 meses (n=24) e aos 6 meses (n=16) após a cirurgia bariátrica. Os índices para avaliação das condições bucais foram: CPOD, IPC, IDD e o volume de fluxo salivar. O questionário OIDP foi utilizado para verificar o impacto da saúde bucal na qualidade de vida. ANOVA e correlação de Spearman foram utilizados para análise estatística (p<0,05). RESULTADOS: CPOD foi 17,6±5,7, 18,4±4,1 e 18,3±5,5 (p>0,05), bolsa periodontal foi encontrada em 50%, 58% e 50% dos pacientes (p>0,05) e o desgaste dentário em dentina em 81,5%, 87,5% e 87,5% dos pacientes, respectivamente antes, 3 meses e 6 meses após a cirurgia bariátrica. Houve diferença significativa entre os três períodos estudados, quanto à prevalência e à severidade do desgaste dentário (p=0,012). O fluxo salivar foi 0,8±0,5 ml/min antes, 0,9±0,5 ml/min aos 3 e 1,1±0,5 ml/min aos 6 meses após cirurgia (p>0,05). O impacto da saúde bucal na qualidade de vida diminuiu com o tempo decorrido após cirurgia bariátrica (p=0,029). CONCLUSÕES: As mudanças no estilo de vida após a cirurgia bariátrica podem aumentar a gravidade de problemas bucais pré-existentes. Entretanto, esta alteração na condição bucal pode não influenciar a qualidade de vida.

The scope of this study was to identify the prevalence of oral manifestations in HIV+/AIDS patients at the DIA Pediatric Hospital of Maputo. All 90 patients were included in the research. Data on dental caries (dmft/DMFT index), soft tissues and saliva flow were analyzed. Information on diet and hygienic habits was obtained in a semi-structured questionnaire. The t- student and chi-square tests were used for statistical assessment. The most frequent oral lesion was candidiasis (5.5%) and upon further oral examination the prevalence of parotid enlargement was 23.0%. The mean dmft 2.6 (SD 3.6) was considerably higher in relation to DMFT of 0.6 (SD 1.6), and the differences between them were statistically significant (P<0.05). The occurrence of mucosal lesions was higher in children who did not take antiretroviral therapy (ART) (p = 0.026). The use of ART is associated with reduced prevalence of oral lesions in HIV+ patients; however, rampant caries were highest in this group. Primary dentition of HIV+ patients should be considered high risk for caries.

Bariatric surgery may improve systemic conditions. However, it had a negative impact on oral health conditions because of an increase in periodontal disease and dental wear.

In published studies, it has been suggested that dental wear is associated with gastroesophageal reflux disease (GERD). This systematic review was carried out to evaluate the association of GERD, dental erosion, and halitosis and to compare the indices adopted in epidemiological surveys. The Medline database (until October, 2011) was searched systematically to identify studies evaluating the prevalence of oral alterations, such as dental erosion and halitosis, in patients with GERD symptoms. Two reviewers analyzed all reports and the selected studies were evaluated according to the quality of evidence, using the validated Newcastle-Ottawa Quality Assessment Scale. Full-text copies of a total of 32 publications were obtained in duplicate. Sixteen publications were identified among the citations in the Bibliographic lists of studies that fulfilled the exclusion/inclusion criteria and quality of evidence. The relationship between dental erosion and GERD patients was significant in only seven studies. According to three studies, halitosis could be one of several extraesophageal symptoms or manifestations in GERD patients. In one study, it was found that the mucosa of GERD patients was significantly more acidic in comparison with that of the control group. This systematic review showed that there is a relationship between GERD and oral diseases (dental erosion and halitosis). The epidemiological surveys used different indices to analyze GERD and dental erosion. Further research could investigate the best method for assessing the two diseases.

ObjectiveThe aim of this study was to evaluate the capacity of potassium oxalate, fluoride gel and two kinds of propolis gel to reduce the hydraulic conductance of dentin, in vitro. Material and MethodsThe methodology used for the measurement of hydraulic conductance of dentin in the present study was based on a model proposed in literature. Thirty-six 1-mm-thick dentin discs, obtained from extracted human third molars were divided into 4 groups (n=9). The groups corresponded to the following experimental materials: GI-10% propolis gel, pH 4.1; GII-30% propolis gel; GIII-3% potassium oxalate gel, pH 4,1; and GIV-1.23% fluoride gel, pH 4.1, applied to the dentin under the following surface conditions: after 37% phosphoric acid and before 6% citric acid application. The occluding capacity of the dentin tubules was evaluated using scanning electron microscopy (SEM) at ×500, ×1,000 and ×2,000 magnifications. Data were analyzed statistically by two-way ANOVA and Tukey's test at 5% significance level. ResultsGroups I, II, III, IV did not differ significantly from the others in any conditions by reducing in hydraulic conductance. The active agents reduced dentin permeability; however they produced the smallest reduction in hydraulic conductance when compared to the presence of smear layer (P<0.05). The effectiveness in reducing dentin permeability did not differ significantly from 10% or 30% propolis gels. SEM micrographs revealed that dentin tubules were partially occluded after treatment with propolis. ConclusionsUnder the conditions of this study, the application of 10% and 30% propolis gels did not seem to reduce the hydraulic conductance of dentin in vitro, but it showed capacity of partially obliterating the dentin tubules. Propolis is used in the treatment of different oral problems without causing significant great collateral effects, and can be a good option in the treatment of patients with dentin sensitivity.

Objectives:The aim of this study was to identify the prevalence of dental caries, periodontal diseases and tooth wear in bariatric patients, and relate the oral health conditions to saliva flow.Methods:Fifty-two patients who had undergone bariatric surgery (Roux-en-Y gastric bypass) and 50 severely obese patients indicated for bariatric surgery were submitted to clinical examinations with regard to dental caries (DMFT index), periodontal condition (CPI index), dental wear (DWI index – Dental wear index) and saliva flow. The data were statistically analyzed by the Student’s-t, Mann-Whitney, Spearman Correlation and Chi-square (χ2) tests at 5% significance level.Results:The DMFT index was 16.11±5.19 in the surgical group and 16.06±6.29 in the control group (P>.05). The mean CPI was 3.05±0.84 for the operated group and 2.66±1.25 for the obese patients with no significant difference between them (P>.05). There was statistically significant difference between the groups for the presence of periodontal pockets (P=.021). All the patients presented some degree of tooth wear, however, with no significant difference between the two groups (P=.82). The mean saliva flow values of the surgical group and control group were 0.64±0.46 mL/min and 0.66±0.49 mL/min, respectively. There was no significant difference in saliva flow and all oral conditions analyzed (P>.05).Conclusion:The prevalence of oral diseases was similar in severely obese patients who were candidates for bariatric surgery and in patients who had been submitted to bariatric surgery. Nevertheless, there was higher prevalence of periodontal pockets in the operated group.

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