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1.
Objectives
The exposure of dentinal tubules causes fluid movement and dentinal hypersensitivity. This study aimed at evaluating the dentine permeability after prophylactic measures performed on exposed dentine after immersion in artificial saliva and citric acid challenge. Confocal microscopy was performed to evaluate the percentage of occluded tubules (OCT%) and the changes in dentine morphology.Methods
Prophy-powders and pastes were tested in this study. An oxalic acid liner was used as a positive control. Dentine discs from human third molars were treated with each material and the dentine permeability was evaluated using a fluid filtration system working at 20 cm H2O. Artificial saliva and citric acid were used for the determination of changes in dentine permeability. The percentage of tubule occlusion capability (OCT%) was evaluated using confocal microscopy.Results
All the products used in this study were able to significantly reduce the dentine permeability of acid-etched specimens. The use of the bioactive glass and sodium bicarbonate showed the highest values in dentine permeability reduction. However, the air-polishing procedures performed with Sylc bioactive glass powder created a dentine surface resistant to citric acid attack.Conclusion
Bioactive glass is suitable for treatment of dentinal hypersensitivity by creating a dentine surface resistant to citric acid attack. 相似文献2.
Carolina Steiner-Oliveira Domenick T. Zero Anderson T. Hara 《Archives of oral biology》2010,55(2):127-133
Objective
The hypotheses of this study was that pulsed CO2 laser (λ = 10.6 μm) treatment in combination (or not) with previous fluoride gel application could increase the resistance of enamel and dentine to erosion, throughout successive erosive challenges.Design
Thirty-two bovine specimens of enamel and of root dentine were flattened, polished and randomly assigned to the following treatments (n = 8): fluoride (F), laser (L), fluoride + laser (FL) or no treatment as negative control (C). The treated specimens were submitted to demineralization (0.3% citric acid, pH 2.45, for 5 min) and remineralization (artificial saliva, for 60 min) cycles, three times a day, for 3 days. Dental surface loss as well as the concentration of calcium, phosphorus and fluoride in the demineralizing solutions were determined after each cycling day. Enamel and dentine were analysed separately using repeated measures ANOVA for ranks (α = 0.05).Results
The association between fluoride and laser (FL) resulted in the lowest enamel and dentine surface loss values throughout the cycles, differing significantly from the control group. No clear benefit of FL over the F or L treatments was observed. There was a non-significant trend (p > 0.05) for FL to release less calcium, phosphorus and fluoride into the demineralizing solutions when compared to the other groups.Conclusions
Pulsed CO2 laser (λ = 10.6 μm) alone was not able to prevent enamel or dentine surface losses due to erosion. Laser treatment in combination with fluoride showed some protection, but the effect does not appear to be synergistic. 相似文献3.
Objectives
Point out the two main factors of caries prevention nowadays: a not cariogenic diet and fluoride.Materials and methods
A literature revision was performed using Pubmed and Medline databases and the Cochrane Library.Results and conclusions
To prevent tooth decay effectively the collaboration with patient is necessary. The patient is required to make life-styles modifications and adopt good habits as far as nutrition and hygiene are concerned. Preventive evidence-based strategies tailored to the caries risk status of each patient must be implemented. 相似文献4.
Objective
To evaluate fluoride release from dentine discs and study the effects of dentine tubule occlusion and erosion prevention of dentifrices containing fluoride and PVM/MA copolymers in a cycling erosive challenge model.Methods
Human dentine discs, 15 in each group, were eroded by 1.0% citric acid and treated by ProNamel® (PRN, 1450 ppm fluoride), Colgate® Total Sensitive (CTS, 1100 ppm fluoride), a prototype dentifrice containing 5000 ppm fluoride and 2% PVM/MA copolymers (PVD) and distilled water (control). Fluoride release from each dentine disc was evaluated every 2 h in a 12-h period. For cycling erosive challenges, dentine discs were treated by dentifrice slurries twice daily, followed by immersion in saliva and erosive challenges by orange juice. Dentine discs were stored in saliva between treatment cycles and the cycling erosive challenges were repeated for 15 days. On days 5, 10, and 15, size of dentine tubule openings and level of dentine tubule occlusion were evaluated with a 3D scanning microscope.Results
PVD released more fluorides than other dentifrices in a 12-h period (p < 0.05). CTS released more fluorides than PRN at 2, 4, 6, and 8 h following a single application (p < 0.05). The size of the dentine tubules was smaller and the number of occluded dentine tubules was greater in the CTS and PVD groups than those in the control and PRN groups on day 15 of the erosive challenges.Conclusion
Bioadhesive PVM/MA copolymers facilitate fluoride retention and release from dentine discs, and promote dentine tubule occlusion and erosion prevention when combined with hydrated silica particles. 相似文献5.
Esteves-Oliveira M Zezell DM Ana PA Yekta SS Lampert F Eduardo CP 《Archives of oral biology》2011,56(6):533-539
Objective
The purpose of the study was to investigate whether dentine irradiation with a pulsed CO2 laser (10.6 μm) emitting pulses of 10 ms is capable of reducing dentine calcium and phosphorus losses in an artificial caries model.Design
The 90 dentine slabs obtained from bovine teeth were randomly divided into six groups (n = 15): negative control group (GC); positive control group, treated with fluoride 1.23% (GF); and laser groups irradiated with 8 J/cm2 (L8); irradiated as in L8 + fluoride 1.23% (L8F); irradiated with 11 J/cm2 (L11); irradiated as in L11 + fluoride 1.23% (L11F). After laser irradiation the samples were submitted to a pH-cycling model for 9 days. The calcium and phosphorous contents in the de- and remineralization solutions were measured by means of inductively coupled plasma optical emission spectrometer – ICP-OES. Additionally intrapulpal temperature measurements were performed. The obtained data were analysed by means of ANOVA and Tukey's test (α = 0.05).Results
In the demineralization solutions the groups L11F and GF presented significantly lower means of calcium and phosphorous losses than the control group; and in L11F means were significantly lower than in the fluoride group. Both irradiation parameters tested caused intrapulpal temperature increase below 2 °C.Conclusion
It can be concluded that under the conditions of this study, CO2 laser irradiation (10.6 μm) with 11 J/cm2 (540 mJ and 10 Hz) of fluoride treated dentine surfaces decreases the loss of calcium and phosphorous in the demineralization process and does not cause excessive temperature increase inside the pulp chamber. 相似文献6.
Objectives
Some studies have been conducted to evaluate the effect of different topical fluoride regimens on the remineralization of initial carious lesions. This study was conducted to compare the effects of 3 topical fluoride treatments on the surface microhardness, fluoride uptake, and fluorescence lesion area in enamel.Methods
Forty-eight bovine teeth were demineralized and subjected to one of the following treatments: (1) no treatment (control), (2) iontophoresis using 2% sodium fluoride solution, (3) 1.23% acidulated phosphate fluoride gel application, and (4) 5% sodium fluoride varnish application. Six persons continuously wore a mandibular removable appliance mounted with eight treated bovine teeth orally for 4 weeks, except while eating, sleeping, and brushing. Microhardness of enamel surfaces was measured using a digital microhardness tester. The fluoride concentration was analyzed using a fluoride electrode, and the fluorescence lesion area was calculated by confocal laser scanning microscopy.Results
No significant differences in the microhardness were observed in response to the 3 fluoride regimens. The highest level of fluoride was observed in the APF gel group. APF gel group also showed significantly reduced fluorescence lesion areas compared to those of the control group.Conclusions
The fluoride regimens showed no difference in surface microhardness; although APF gel showed the best effects in terms of fluoride uptake and decrease in the fluorescence lesion area, its effects were not significantly different from those of fluoride varnish. 相似文献7.
Objectives
The aim of this paper is to present an overview of the current state of knowledge about dentin hypersensitivity, in terms of epidemiology, aetiology/risk factors, pain mechanisms, diagnosis and management. Available products for treatment of dentin hypersensitivity are described and scientific and clinical research validating their efficacy is reviewed.Materials and methods
Original papers, reviews and guidelines on the subject, published both in English and in Italian from 2009 to 2013, were retrieved from the Medline/Pubmed database. Additional publications were obtained by searching the reference list of the retrieved works.Results and conclusions
The management of dentin hypersensitivity is based on the control of causal factors and on the application, at-home or in-office, of various products aimed to occlude patent tubules. In vitro methods suffer from some limitations in mimicking “real-life” individual behaviours and ecological variables in the oral environment, therefore randomized and controlled clinical trials are considered the gold standard to evaluate the efficacy of these products. The arginine-calcium carbonate complex has proved to be efficacious in providing instant and long-lasting relief. Further randomized and controlled clinical studies are needed to confirm the results of amorphous sodium calcium phosphosilicate and strontium acetate. 相似文献8.
Daniel Humberto Pozza Patrícia Wehmeyer Fregapani Cristina Braga Xavier Jo?o Batista Blessmann Weber Marília Gerhardt de Oliveira 《Journal of applied oral science : revista FOB》2009,17(6):596-599
Objectives:
CO2, Er:YAG and Nd:YAG lasers have been used in endodontic surgery. This in vitro study evaluated 1% Rhodamine B dye penetration using computer-assisted morphometry (ImageTool Software®) of 108 endodontically treated human permanent canines.Material and methods:
Teeth were divided into 9 groups according to the technique used: A: 90-degree apicoectomy with bur, root-end cavity preparation with ultrasound and filled with MTA; B: 90-degree apicoectomy with bur, root-end cavity prepared with ultrasound and filled with MTA, and treatment of apical surface with CO2 laser (1 W, CW/CW); C: 90-degree apicoectomy with bur, and treatment of apical surface with Nd:YAG laser (150 mJ, 10 Hz); D: 90-degree apicoectomy with bur, and treatment of apical surface with CO2 laser (1 W, CW/CW); E: apicoectomy with Er:YAG laser (400 mJ, 10 Hz), root-end cavity prepared with ultrasound and filled with MTA; F: apicoectomy with Er:YAG laser (400 mJ, 10 Hz) and treatment of apical surface with Nd:YAG laser (150 mJ, 10Hz); G: apicoectomy with CO2 laser (5W, CW/SP), root-end cavity prepared with ultrasound and filled with MTA; H: irradiation of apical end with CO2 laser (1 W, CW/CW); I: irradiation of apical end with Nd:YAG laser (150 mJ, 10 Hz).Results:
Dye penetration was found in all specimens at different rates, the lowest penetration occurring in groups C (16.20%), B (17.24%) and F (17.84%).Conclusions:
Groups B, C and F represent the best technical sequences to perform endodontic surgery. 相似文献9.
Objective
The advent of dental lasers has raised another possible treatment option for dentine hypersensitivity (DH) and has become a research interest in the last decades. The aim of this randomized, controlled, double-blind, split mouth, clinical study was to evaluate and compare the desensitizing effects of erbium, chromium-doped:yttrium, scandium, gallium and garnet (Er,Cr:YSGG) to galium-aluminium-arsenide (GaAlAs) laser on DH.Methods
Fifty-one patients participated in this study for a total of 174 teeth. DH was assessed for all groups with a visual analog scale. For each patient, the teeth were randomized to three groups. In the diode laser group, sensitive teeth were irradiated with the GaAlAs laser at 8.5 J/cm2 energy density. In the Er,Cr:YSGG laser group, sensitive teeth were irradiated with Er,Cr:YSGG laser in the hard tissue mode using a none-contact probe at an energy level of 0.25 W and repetition rate of 20 Hz, 0% water and 10% air. In the control group no treatment was performed. Treatment time was 60 s for GaAlAs laser and 30 s for Er,Cr:YSGG laser.Results
When compared with the control group and baseline data, in both laser groups, laser irradiation provided a desensitizing effect immediately after treatment and this effect was maintained throughout the study (p < 0.05). No significant differences between Er,Cr:YSGG and GaAlAs laser groups were found at any follow-up examination (p > 0.05).Conclusion
Based on these findings, it may be concluded that both Er,Cr:YSGG and GaAlAs lasers were effective in the treatment of DH following a single application. 相似文献10.
Olley RC Pilecki P Hughes N Jeffery P Austin RS Moazzez R Bartlett D 《Journal of dentistry》2012,40(7):585-593
Objectives
To investigate the dentine occlusion and acid resistance of dentifrices developed to treat dentine hypersensitivity.Methods
This was a single centre, single blind, randomised, split mouth, four treatments, two period crossover, in situ study in healthy subjects. Subjects wore buccal intra-oral appliances each fitted with four dentine samples over four consecutive days with one study product applied per appliance; 8% strontium acetate in silica base, 1040 ppm sodium fluoride (Sensodyne® Rapid Relief), 8% arginine, calcium carbonate, 1450 ppm sodium monofluorophosphate (Colgate Sensitive Pro-Relief®), 1450 ppm sodium fluoride (control paste) and water. On days 3 and 4, two agitated grapefruit juice challenges (ex vivo) occurred for 1 min. At the end of each treatment day 1 dentine sample was removed from each appliance for scanning electron microscopy (SEM). The extent of tubule occlusion was measured using an examiner-based visual scoring index (three trained examiners).Results
In total, 28 subjects ((12 males and 16 females with a mean age of 34.7 years (SD 8.41 years)) completed the study. On day 2, both test dentifrices demonstrated significantly better dentine tubule occlusion than water (p < 0.0001) and control paste (8% strontium p = 0.0003 and 8% arginine p = 0.0019). After 3 and 4 days of twice daily brushing with acid challenges on days 3 and 4 the strontium-based dentifrice demonstrated significantly better dentine occlusion than all other treatments (p < 0.0001).Conclusions
Strontium acetate and arginine-based dentifrice result in statistically significant dentine tubular occlusion compared to controls, but the arginine-based dentifrice is more susceptible to acid challenge.Clinical significance
Erosive beverages are an important aetiology in DH by exposing dentine tubules. Their consumption has increased significantly over the past decade in the UK. This 4-day in situ study investigated the properties of commercially available dentifrices designed to occlude dentine tubules and their resistance to an agitated acid challenge. 相似文献11.
Vinícius Rangel GERALDO-MARTINS Cesar Penazzo LEPRI Juliana Jendiroba FARAONI-ROMANO Regina Guenka PALMA-DIBB 《Journal of applied oral science : revista FOB》2014,22(5):459-464
The use of erbium lasers to prevent caries in enamel has shown positive results.
However, it is not known if Er,Cr:YSGG laser can also be used to increase acid
resistance of root dentine, which is another dental tissue susceptible to the action
of cariogenic bacteria.
Objective
To analyze the effects of the Er,Cr:YSGG laser (λ=2.78 μm, 20 Hz) irradiation associated with 2% neutral sodium fluoride (NaF) to prevent root dentin demineralization.Material and Methods
One hundred human root dentin samples were divided into 10 groups (G) and treated as follows: G1: no treatment; G2: NaF; G3: laser (4.64 J/cm2) with water cooling (WC=5.4 mL/min); G4: laser (4.64 J/cm2) without WC; G5: laser (8.92 J/cm2) with WC; G6: laser (8.92 J/cm2) without WC; G7: laser (4.64 J/cm2) with WC and NaF; G8: laser (4.64 J/cm2) without WC and NaF; G9: laser (8.92 J/cm2) with WC and NaF; G10: laser (8.92 J/cm2) without WC and NaF. The NaF gel was applied alone or after 4 min of irradiation. After 14 days of acid challenge, the samples were sectioned and the Knoop microhardness (KHN) test was done at different depths (30, 60, 90 and 120 μm) from the outer dentin surface. Data were analyzed by one-way ANOVA and Fisher''s test (α=5%).Results
The results showed that G8 and G10 presented higher KHN than the G1 for the depths of 30 and 60 μm, indicating an increase of the acid resistance of the dentin in up to 35% (p<0.05).Conclusions
The use of Er,Cr:YSGG laser irradiation at 4.64 J/ cm2 and 8.92 J/cm2 without water cooling and associated with 2% NaF can increase the acid resistance of human root dentin. 相似文献12.
Objectives
The aim of this work is to evaluate if patients of different sex and ages learn oral preventive methods in different ways.Materials and methods
One-hundred and twenty patients in preventodontic iter of different sex and age were included in the study.Results
Remarkable results were obtained regarding both the effective reduction of bacterial oral flora and patient's compliance and learning, especially in the group of patients older than 10 years.Conclusions
Patient instruction and motivation allow to obtain optimal results in particular in patients aged more than 10 years. 相似文献13.
Objective
This in vitro study aimed to investigate the preventive effect of brushing with anti-erosive toothpastes compared to a conventional fluoride toothpaste on dentine erosion.Materials and methods
Bovine dentine specimens (n = 12 per subgroup) were eroded in an artificial mouth (6 days, 6 × 30 s/day) using either citric acid (pH:2.5) or a hydrochloric acid/pepsin solution (pH:1.6), simulating extrinsic or intrinsic erosive conditions, respectively. In between, the specimens were rinsed with artificial saliva. Twice daily, the specimens were brushed for 15 s in an automatic brushing machine at 2.5 N with a conventional fluoride toothpaste slurry (elmex, AmF) or toothpaste slurries with anti-erosive formulations: Apacare (NaF/1% nHAP), Biorepair (ZnCO3-HAP), Chitodent (Chitosan), elmex Erosionsschutz (NaF/AmF/SnCl2/Chitosan), mirasensitive hap (NaF/30% HAP), Sensodyne Proschmelz (NaF/KNO3). Unbrushed specimens served as control. Dentine loss was measured profilometrically and statistically analysed using two-way and one-way ANOVA followed by Scheffe‘s post hoc tests. RDA-values of all toothpastes were determined, and linear mixed models were applied to analyse the influence of toothpaste abrasivity on dentine wear (p < 0.05).Results
Dentine erosion of unbrushed specimens amounted to 5.1 ± 1.0 μm (extrinsic conditions) and 12.9 ± 1.4 μm (intrinsic conditions). All toothpastes significantly reduced dentine erosion by 24–67% (extrinsic conditions) and 21–40% (intrinsic conditions). Biorepair was least effective, while all other toothpastes were not significantly different from each other. Linear mixed models did not show a significant effect of the RDA-value of the respective toothpaste on dentine loss.Conclusion
Toothpastes with anti-erosive formulations reduced dentine erosion, especially under simulated extrinsic erosive conditions, but were not superior to a conventional fluoride toothpaste. 相似文献14.
Juliana Jendiroba Faraoni-Romano Cecilia Pedroso Turssi Mônica Campos Serra 《Journal of dentistry》2009
Objectives
This triple-blind, 2 × 2 crossover in situ study, was undertaken to verify whether the wear resistance of enamel and root dentine would be affected by bleaching with a 10% carbamide peroxide agent and a placebo agent.Methods
Thirty slabs of each substrate (2 mm × 3 mm × 2 mm) were selected for each phase, after flattening and polishing procedures and microhardness test. After a 7-day lead-in period, one specimen of each substrate was randomly bonded on the facial surface of each one of 30 subject's upper second premolars. The volunteers received instructions on how to perform toothbrushing and application of gel in the tray. Fifteen volunteers bleached their maxillary arch with a 10% carbamide peroxide bleaching agent for a 2-week period, while the remainders used a placebo agent. After a 1-week washout period, a new set of enamel and root dentine slabs were bonded to the premolars and volunteers were crossed over to the alternate agent for 14 days. The resistance of enamel and root dentine to wear following bleaching, toothbrushing and intraoral exposure was measured with a profilometer, using reference areas.Results
For enamel, ANOVA did not demonstrate significant difference between wear provided by placebo and bleaching agent (p = 0.3713), but higher wear depth was observed for bleached root dentine (p = 0.0346).Conclusions
While overnight bleaching caused no alteration in wear resistance of enamel, root dentine showed increased tissue loss. 相似文献15.
Objectives
To evaluate by way of a systematic review the effectiveness of arginine-containing desensitising toothpastes in comparison to control agents in reducing dentine hypersensitivity.Data sources
Electronic databases were searched including: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, LILACS (30/03/2012). Reference lists of eligible studies and systematic reviews were cross-checked in an attempt to identify additional studies. Strategies to identify grey literature were employed.Study selection inclusion criteria
Controlled Clinical Trials (CCTs) and Randomised Controlled Trials (RCTs) comparing arginine-containing desensitising toothpastes to non-arginine-containing control toothpastes.Two review authors independently screened the titles and abstracts of studies identified. Data collection forms were completed for included studies.Outcomes
Changes in sensitivity to tactile and air-blast stimuli. A subjective assessment of sensitivity was also sought.Conclusion
Data identified indicates a potential role for arginine-containing toothpastes in managing dentine hypersensitivity. However, this conclusion is based on small sample sizes and the studies identified did not follow patients up in the medium to long term. The authors recommend that there is a need for well-designed RCTs to be conducted prior to any definitive recommendations being made.Clinical significance
Dentine hypersensitivity is a common condition. Its multi-factorial aetiology has led to several treatment modalities being advocated. The continued introduction of new desensitising agents suggests that no product has yet proven ultimately successful. Arginine-containing toothpastes have recently been introduced, this article systematically reviews the evidence relating to their effectiveness. 相似文献16.
Annette Wiegand Dominique Bichsel Ana Carolina Magalhães Klaus Becker Thomas Attin 《Journal of dentistry》2009
Objective
This study aimed to compare the effects 0.5% and 1% sodium, amine and stannous fluoride at different pH on enamel erosion in vitro.Methods
Bovine enamel samples were submitted to a cyclic de- and remineralisation for 3 days. Each day, the samples were exposed for 120 min to pooled human saliva and subsequently treated with one of the fluoride solutions for 3 min: amine fluoride (AmF, 0.5% and 1% F−), sodium fluoride (NaF, 0.5% and 1% F−), each at pH 3.9 and 7.0, and stannous fluoride (SnF2, 0.5% and 1% F−), at pH: 3.9. Additionally, two groups were treated with fluoride-free placebo solutions (pH: 3.9 and 7.0) and one group served as control (no fluoridation). Ten specimens each group were inserted in a so-called artificial mouth and eroded six times daily with hydrochloric acid (pH 2.6) for 90 s each intermitted by exposure to artificial saliva (1 h). After 3 days, enamel loss was analyzed profilometrically and evaluated statistically by ANOVA.Results
Only the acidic 0.5% and 1% SnF2 and 1% AmF solutions were able to reduce erosive enamel loss significantly, while all other solutions and placebos did not differ significantly from the control. Between the acidic SnF2 and the 1% AmF solutions no significant differences could be detected.Conclusion
At the same concentrations, acidic SnF2 and AmF may be more effective than NaF to protect enamel against erosion. 相似文献17.
Objectives
The aim of the present review was to identify factors influencing the eruption of impacted permanent incisors.Materials and methods
Mitchell and Bennet evaluated the distance of the unerupted permanent tooth from the occlusal plane and classified it as: near (vertical displacement: crown of the impacted tooth is at the level of the coronal third of the root of the adjacent tooth; horizontal displacement: > half the width of the tooth itself); mid (vertical: the tooth is at the level of the middle third of the root of the adjacent tooth; horizontal displacement: > ½ but < 1 times the width of the tooth); far, greater displacement. Smailiene et al. analyzed the vertical position of impacted permanent incisors in relation to the contralateral erupted central incisor. They defined three positions: v1, the crown is at the level of the gingival third of the root of the adjacent permanent incisor; v2, the crown is at the level of middle third of the root; v3, the crown is at the level of apical third of the root. Bryan et al. estimated inclination of the unerupted tooth calculated as the angle between its long axis and the mid-sagittal plane.Results and conclusions
These methods are easy to perform and effective for predicting the spontaneous eruption of malposed incisors. The vertical position of the tooth and the angle between its long axis and the mid-sagittal plane appear to be important factors for predicting eruption. 相似文献18.
Objectives
Casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) has the potential to induce the biomimetic mineralisation of dentine collagen fibrils. This study aimed to demonstrate in vitro the ability of CPP-ACP to form apatite crystals on phosphorylated dentine collagen fibrils.Methods
Dentine slices with a 2-mm thickness were prepared from sound human third molars. The slices were etched with phosphoric acid to expose the collagen fibres. Sodium trimetaphosphate was then used to phosphorylate the exposed collagen fibres. CPP-ACP paste was topically applied to the surface of the phosphorylated slices, which were then immersed in a metastable calcium phosphate remineralising solution and incubated at 37 °C for 10 days. The CPP-ACP paste and the remineralising solution were replaced every two days. Phosphorylated dentine slices without a CPP-ACP application and non-phosphorylated dentine slices with a CPP-ACP application were prepared and used for comparison. The slices were examined using scanning electron microscope (SEM), diffuse reflectance-Fourier transform infrared spectroscopy (DR-FTIR) and X-ray diffraction (XRD).Results
The SEM results revealed the presence of intrafibrillar and interfibrillar crystal nucleation and growth along the phosphorylated dentine collagen fibres. The DR-FTIR and XRD confirmed that the crystals were hydroxyapatite. No apatite crystal nucleation and growth were observed in either the slices that had no non-phosphorylation or those without CPP-ACP application.Conclusions
CPP-ACP can induce the biomimetic mineralisation of dentine through apatite formation along and between the phosphorylated dentine collagen fibres.Clinical significance
The in vitro study imitated the application of CPP-ACP to exposed dentine tooth surfaces in the mouth. This could lead to the development of a new therapeutic technique for the treatment of tooth hypersensitivity. 相似文献19.
Objectives
The project aims to analyze the feasibility of an oral hygiene service provided by a graduated dental hygienist in a public medical facility, oriented towards primary and secondary oral prevention services of social utility, as an alternative to what it is offered by the private sector.Methods
In order to carry out this project, all necessary data and requirements have been identified with reference to the current regulation, the public health services resources and the expectations of the final user. The organization of the oral hygiene service has been analyzed with particular attention to the type of service, the operative methods, the responsibilities and competences. The resources through which oral hygiene services are efficiently and effectively provided have also been analyzed.Results
The author presents data related to cost analysis, price of each service provided to the patient and to the assigned resources in relation to services provided in a public medical facility by graduated dental hygienists.Conclusions
Although the insertion of dental hygienists represents a cost for the medical facility, through the calculation made to evaluate the different modalities to offer a private service or a reduced charge, it is possible to regulate the relationship between the dental hygienist and the medical facility with benefits for both and patients. The author therefore underlines the suitability and feasibility of the project. 相似文献20.
Salvatore Sauro Francesco Mannocci Manuel Toledano Raquel Osorio David H. Pashley Timothy F. Watson 《Journal of dentistry》2009