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| 2. |
- Frisk, Fredrik, 1971, et al.
(författare)
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Root-filled teeth and recurrent caries-a study of three repeated cross-sectional samples from the city of Jönköping, Sweden.
- 2011
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Ingår i: Acta odontologica Scandinavica. - : Informa UK Limited. - 1502-3850 .- 0001-6357. ; 69:6, s. 401-5
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: The aim of the study was to test the hypothesis that root-filled teeth are at a higher caries risk than non-root-filled teeth. MATERIALS AND METHODS: Two sub-samples from epidemiologically obtained data collected in 1983, 1993 and 2003 in the city of Jönköping, Sweden, were analysed. All the participants were examined clinically and radiographically and the type of filling and the presence or absence of caries were recorded. Sub-sample 1 comprised 832 individuals (9202 teeth) aged 20-70 years with at least eight premolars/molars. In sub-sample 2, 163 subjects (577 teeth) with only one or two decayed tooth surfaces and at least one tooth with full crown coverage were analysed. RESULTS: Logistic regression analysis found that root-filled teeth were predictive of recurrent caries when controlling for the type of restoration in sub-sample 1 (OR = 1.68; 1.41-2.0; CI 95%) and sub-sample 2 (OR = 2.20; 1.07-4.52; CI 95%). CONCLUSION: In support of the suggested hypothesis, the data revealed a significant association between root-filled teeth and recurrent caries.
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| 3. |
- Merdad, Khalid, et al.
(författare)
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Caries susceptibility of endodontically versus nonendodontically treated teeth.
- 2011
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Ingår i: Journal of endodontics. - : Elsevier BV. - 1878-3554 .- 0099-2399. ; 37:2, s. 139-42
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Tidskriftsartikel (refereegranskat)abstract
- NTRODUCTION: The aim of the present investigation was to evaluate the caries susceptibility of endodontically versus nonendodontically treated teeth in relation to dental plaque-related factors. METHODS: Twenty patients with 2 endodontically treated teeth (ETT) each were examined regarding cariogenic microflora of proximal plaque, in situ plaque pH drop after a sucrose rinse (Stephan curve), and de novo plaque formation. Recurrent caries and the quality of the coronal fillings/crowns of these teeth were also evaluated. ETT were compared with contralateral, nonendodontically treated teeth (NETT). RESULTS: Irrespective to the type of restoration, Streptococcus mutans count, de novo plaque formation, and recurrent caries were higher on the surface of ETT compared with NETT (P < .05). Moreover, the initial (resting) pH in plaque was significantly lower (P < 0.05) in ETT. CONCLUSIONS: ETT showed an increased susceptibility to caries as a result of either alteration in their biological environment or inadequacy of the marginal fit of the dental restoration. Clinicians should be aware of this risk.
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| 4. |
- Merdad, Khalid
(författare)
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Cariological Studies on Endodontically Treated Teeth
- 2011
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Caries might jeopardize the long-term successful outcome of endodontic therapy. Therefore, it is of an interest for the endodontist to evaluate caries susceptibility of root-filled teeth (RFT). In the present thesis, several studies were conducted to explore this relationship. In the first study, caries risk profile of 200 Saudi adults, using the Cariogram, and the frequency of recurrent caries in RFT were evaluated. All individuals were interviewed about their oral health, dietary habits and use of fluoride. Caries was registered both clinically and radiographically. Salivary and microbiological data were obtained using chair-side tests. The findings from this study did not show any significant difference in caries risk profile, at the individual level, except for the mutans streptococcus count. A significant difference was detected, however, in the proportion of recurrent caries, which was higher in RFT compared to vital teeth. Caries susceptibility of RFT can be attributed to both extrinsic and intrinsic factors. In the second study, caries susceptibility of RFT was compared with contra-lateral non-root-filled teeth (NRFT) plaque-related factors. This study was carried out on a sub-sample (20 patients) with two or more RFT, recruited from the participants in the first study. Each patient was examined regarding cariogenic microflora of proximal plaque, in situ plaque pH-drop after a sucrose rinse (the Stephan curve) and de novo plaque formation. Recurrent caries and the quality of the coronal fillings/crowns of the teeth were also evaluated. The results showed that endodontically treated teeth had an increased susceptibility to caries, ascribed either to alteration in their biological environment, or to inadequacy of the marginal fit of the dental restoration. In the third study, the frequency of recurrent caries in RFT versus NRFT was evaluated, retrospectively. The material consisted of totally of 11,554 teeth in 832 subjects, pooled from a large cross-sectional epidemiological study conducted in Jönköping, Sweden. The findings showed a significant association between endodontically treated teeth and recurrent caries. The fourth study assessed the effects of sodium hypochlorite (NaOCl), ethylenediaminetetraacetic acid (EDTA) and chlorhexidine (CHX) in various strengths and combinations on the demineralization of dentin, considering their use as irrigation solutions. Thirty-five single-rooted teeth were extracted and randomly allocated into seven groups. The teeth were analyzed with micro-computed tomography (micro-CT), before and after the treatment. Volume measurements, to assess the demineralization effect, were carried out with software. The data showed that NaOCl and EDTA irrigation solutions changed the quality of dentin, in a way that it may increase the caries susceptibility. To conclude, the results from this thesis should raise the awareness among dental clinicians regarding the potential increase in caries risk following endodontic treatment, and accordingly, precautionary measures should take place.
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| 5. |
- Merdad, Khalid, et al.
(författare)
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Evaluation of the caries profile and caries risk in adults with endodontically treated teeth.
- 2010
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Ingår i: Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. - : Elsevier BV. - 1528-395X .- 1079-2104. ; 110:2, s. 264-9
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Tidskriftsartikel (refereegranskat)abstract
- The present study was set up to explore (1) a potential association between a person's caries risk profile and the presence or absence of root-filled teeth, and (2) the caries risk in endodontically treated teeth.
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| 6. |
- Sonbul, Helal, 1974, et al.
(författare)
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The effect of a modified fluoride toothpaste technique on buccal enamel caries in adults with high caries prevalence: a 2-year clinical trial
- 2011
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Ingår i: Community Dental Health. - 0265-539X. ; 28:4, s. 292-296
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To evaluate the preventive effect of a “modified fluoride (F) toothpaste technique” on the incidence and progression of buccal/ lingual enamel caries among Saudi adults with high caries prevalence. Method: Adults were randomly assigned to test and control groups. Test group patients were instructed to use the provided F toothpaste twice a day as follows: 1, use 2cm toothpaste; 2, brush for 2min; 3, swish the toothpaste slurry around the teeth for about half a minute before spitting it out; and 4, no post-brushing water rinsing and no eating/drinking for 2hr. The patients in the control group (n=57) were instructed to continue using their regular F toothpaste twice a day without any further instructions. The patients’ compliance in the test group was assessed after 2 years. Results: Of 175 adults, 113 completed the study. The test group (n=56) had a lower enamel mean caries incidence 0.56 (sd 1.04) than the control group (n=57), 1.01 (1.00) (p<0.05), with a preventive fraction of 44%. There was no difference regarding enamel caries progression or arrested caries. The caries incidence in the test group was higher in the subgroup of patients who rinsed with water post-brushing and who only brushed once a day (p<0.05). Conclusion: The “modified fluoride toothpaste technique”, as practised over the 2 years in a Saudi population with high caries prevalence, had a preventive effect on the incidence of buccal/lingual enamel caries but not on the progression.
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