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PubMed1988

Human plasma fluoride levels following intake of dentifrices containing aminefluoride or monofluorophosphate.

After single, oral doses, 8 h profiles of fluoride (F) concentrations in plasma were determined in healthy human volunteers. Bioavailability of F from four dentifrices with either aminefluoride (AMF) or monofluorophosphate (MFP) was compared with that of NaF. There were no significant differences with respect to F availabilities, plasma F peak levels and plasma F profiles between NaF and the dentifrices tested, regardless of the F compound, F content or further ingredients. From the pharmacokinetic data it is concluded that dentifrices with 0.02 per cent F or less markedly decrease the risk of inducing plasma F concentrations that might disturb enamel mineralization, even if large quantities of dentifrice are ingested by small children.

Adolescent↗

PubMed2006

In-vivo effects of fluoridated antiplaque dentifrice and bonding material on enamel demineralization adjacent to orthodontic appliances.

INTRODUCTION: The effect of a fluoridated antiplaque dentifrice on the development of caries lesions adjacent to dental appliances bonded with ionomeric material is unknown. METHODS: Fourteen orthodontic patients were randomly divided into 2 groups of 7. One group brushed 3 times a day with a fluoridated dentifrice, and the other used an experimental antiplaque fluoridated formulation. Bracket bases were randomly bonded with either resin-modified glass ionomer cement or composite resin to the buccal surfaces of either the maxillary left or right premolars in each subject. The teeth were banded, leaving a space on the buccal surface to allow dental plaque accumulation. After 28 days of dentifrice use, the teeth were extracted, and mineral loss in the enamel adjacent to the bonded material was assessed by cross-sectional microhardness. RESULTS: Mineral loss in the enamel surrounding the bond with the resin-modified glass ionomer cement was lower (P <.05) than around the composite bond. Enamel demineralization was lower (P <.05) in subjects who used the experimental antiplaque fluoridated formulation than in those who used the fluoridated one. CONCLUSIONS: The data suggest that an antiplaque fluoridated dentifrice is superior to one that is only fluoridated for reducing enamel demineralization adjacent to dental material bonded with composite, but the effect seems irrelevant when bonding is done with the ionomeric material.

Acrylic Resins↗

PubMed2004

Influence of buffering effects of dentifrices and fluoride gels on abrasion on eroded dentine.

OBJECTIVE: Evaluation of abrasion resistance of eroded and non-eroded dentine brushed with experimental dentifrices and gels of varying buffering capacities. DESIGN: One hundred and twenty human dentine specimens were distributed among six groups (A-F) according to the different buffering capacities of experimental toothpastes and gels. The dentifrices (pH: 4.5) and gels (pH: 4.5) differed in fluoride content, RDA-value and buffer capacity (given as mg KOH needed for neutralisation): (A) 0.125%F, RDA: 77, 6mg KOH; (B) 0.125%F, RDA: 125, 24mg KOH; (C) 0.125%F, RDA: 129, 12mg KOH; (D) 0%F, RDA: 81, 1.55mg KOH; (E) 1.25%F, RDA: 21, 8.5mg KOH; (F) 0.125%F, RDA: 7, 3.11mg KOH. Ten specimens were cycled through three alternating demineralisations (1% citric acid, 5min) and remineralisations (artificial saliva, 1min) including brushing abrasion in an automatic brushing machine (2 x 2000 strokes). Ten samples of each group were not eroded, but only brushed. RESULTS: After three cycles, loss of dentine was determined by profilometry (mean +/- S.D. [microm]). Eroded samples: (A) 37.12+/-4.95; (B) 48.67+/-4.77; (C) 39.88+/-3.76; (D) 32.92+/-2.67; (E) 3.65+/-1.35; (F) 6.47+/-1.31. Uneroded samples: (A) 30.78+/-6.47; (B) 37.84+/-7.75; (C) 30.07+/-3.05; (D) 26.93+/-2.30; (E) 1.76+/-0.94; (F) 0.51+/-0.18. Analysis of variance revealed significantly higher abrasion values for the eroded compared to the non-eroded samples (P<or=0.05). Dentifrices with same pH-value, fluoride content and similar RDA-values but a higher buffering capacity exhibited significantly more abrasion than toothpastes with lower buffering capacity. Highly-concentrated fluoride gel with higher buffering capacity lead to less abrasion values compared to the gel with low fluoride concentration and low buffering capacity. CONCLUSION: Toothbrushing abrasion behaviour of eroded dentine may be influenced by the fluoride content, RDA-value and buffering capacity of the applied dentifrice or gel.

Buffers↗

PubMed2004

Clinical evaluation of the stain removing ability of a whitening dentifrice and stain controlling system.

OBJECTIVES: This study aimed to evaluate the stain removing/controlling properties of a whitening dentifrice and a stain controlling system, in a parallel group, multiple use study. METHODS: Subjects (63), were stratified according to baseline stain scores and randomly allocated to a group, A (standard dentifrice), B (whitening/stain removing dentifrice) or C (whitening/stain removing dentifrice, tooth polish, tooth polisher and whitening/stain removing mouthwash). At each attendance, extrinsic stain was scored blind by a trained and calibrated examiner using the Shaw and Murray Stain Index, under constant lighting conditions. In addition, whiteness was measured using a colorimeter. RESULTS: The toothpaste regimens were well balanced at baseline (p=0.811). At 4 weeks, Regimens B and C had significantly less stain than A (p<0.05). Lower stain values were maintained/reduced for regimens B and C by week 6, with changes from baseline significantly greater than for Regimen A. When lightness was assessed by colorimeter, Regimen C was also found to be significantly whiter than Regimen A (p<0.05). CONCLUSIONS: It was concluded that both whitening regimens had a significant effect on reducing tooth staining and improving whiteness over the 6 week time period.

Adult↗

PubMed1996

An evaluation of a dentifrice containing salivary peroxidase elements for the control of gingival disease in patients with irradiated head and neck cancer.

Patients who have undergone irradiation for head and neck tumors commonly have xerostomia. Loss of the protective constituents normally found in saliva leaves patients at greater risk for development of significant dental pathologic disorders, including gingival and periodontal disease. Periodontal disease and tooth extractions are currently accepted as etiologic factors for the development of osteoradionecrosis. This double-blind crossover trial was conducted to assess the efficacy of a dentifrice containing salivary peroxidase elements in the reduction of gingivitis in a population of patients with irradiated cancer. Subjects were instructed to brush with the dentifrice provided. Plaque and gingival index values were obtained and statistically compared with baseline values. A weak positive effect was found between use of the dentifrice and a reduction in gingival inflammation. Patient compliance was a limiting factor in this treatment effect. The results suggest possible efficacy for the dentifrice in augmenting traditional measures of postradiation oral health maintenance.

Cranial Irradiation↗

PubMed1999

The effects of mouth rinses and dentifrice-containing magnesium monoperoxyphthalate (mmpp) on oral microflora, plaque reduction, and mucosa.

The effects of a magnesium monoperoxyphthalate (MMPP) mouth-rinse, with or without sodium lauryl sulphate (SLS), and an MMPP dentifrice, on salivary counts of bacterial flora and yeasts, and on supragingival plaque scores were investigated in 131 healthy oral candida carriers over a 9 week double blind study. There were no changes in the salivary counts of bacteria studied (anaerobes, streptococci, fusobacteria, Actinomyces, Viellonella) in the test or placebo groups. A significant increase in salivary candida counts was seen in subjects using an MMPP rinse and dentifrice compared with placebo subjects and this phenomenon was not influenced by the presence of SLS. A significant reduction in plaque was seen in subjects using an MMPP rinse and dentifrice compared with placebo subjects. Frank candidosis was observed in only 2 subjects (1 in the placebo rinse group and 1 in the MMPP dentifrice group) but erythematous lesions, with subjective reports of soreness, dryness or burning sensation, were recorded and observed more frequently in the experimental groups than in the placebos, especially in those also using SLS. The substantial plaque reduction achieved with MMPP in the absence of tooth staining but with the increase in salivary Candida counts suggests that further studies of MMPP are warranted.

Actinomyces↗

PubMed2001

Effects of SCN-/H2O2 combinations in dentifrices on plaque and gingivitis.

OBJECTIVES: A 10-week, double-blind, placebo-controlled clinical study on 140 male subjects was conducted to determine the effect on plaque and gingivitis of 5 dentifrices containing various thiocyanate (SCN-)/hydrogen peroxide (H2O2) combinations. MATERIALS AND METHODS: The dentifrices consisted of a gel base without any detergents or abrasives (placebo, group A) to which SCN- and/or H2O2 were added as follows: 0.1% SCN- (group B), 0.5% SCN- (group C), 0.1% SCN-/0.1% H2O2 (group D), 0.5% SCN-/0.1% H2O2 (group E) and 0.1% H2O2 (group F). A baseline examination was performed in which the Silness and Löe Plaque Index (PI), the Mühlemann and Son Sulcus Bleeding Index (SBI), and the amount of gingival crevicular fluid (GCF) were recorded using the Periotron 6,000 on teeth 16, 12, 24, 36, 32, and 44. The subjects were randomly assigned to either the placebo group (n = 40) or one of the test groups (n = 20) and used their respective dentifrices over a period of 8 weeks. Finally, each group used the placebo for another 2 weeks (wash-out). Re-examinations were performed after 1, 4, and 8 weeks and the 2-week wash-out period employing the clinical parameters used at baseline. Intragroup changes were analyzed with the Wilcoxon signed-ranks test, using the baseline and wash-out points as references. The Mann-Whitney U test was used for comparisons between the treatment groups and the placebo group. RESULTS: At the 8-week examination, the plaque index in group E (p = 0.017) and group F (p = 0.032) was lower than in the placebo group. The Sulcus Bleeding Index in group F after 1 week was increased (p = 0.023) and the SBI in group E after 8 weeks was reduced (p = 0.047) as compared to the placebo group. CONCLUSION: The results demonstrated that a dentifrice containing 0.5% SCN- and 0.1% H2O2 but no detergents or abrasives inhibited plaque and decreased gingivitis.

Adolescent↗

PubMed2003

The effect of a triclosan-containing dentifrice on the progression of periodontal disease in an adult population.

OBJECTIVES: The aim of the present study was to determine the effect of unsupervised, long-term use of a 0.3% triclosan/2% copolymer dentifrice on the progression of periodontal disease in a general adult population. METHODS: Five hundred and four volunteers were enrolled in a double-blind, controlled clinical trial. Participants were matched for disease status, plaque index, age and gender. At the baseline examination, probing pocket depths and relative attachment levels were recorded and participants were assigned to either the test or control group. Re-examinations took place after 6, 12, 24, 36, 48 and 60 months. Subgingival plaque samples were collected at each examination and assayed for Porphyromonas gingivalis, Actinobacillus actinomycetemcomitans and Prevotella intermedia. A generalised linear model was used to analyse the data, with a number of covariates thought to influence the responses included as the possible confounding effects. RESULTS: The triclosan/copolymer dentifrice had a significant effect in subjects with interproximal probing depths > or =3.5 mm, where it significantly reduced the number of sites with probing depths > or =3.5 mm at the following examination, when compared with the control group (p<0.001). Furthermore, this effect increased with increasing numbers of affected sites. There was no effect of the triclosan/copolymer dentifrice in individuals without probing depths > or =3.5 mm at the previous examination. Other factors significantly affecting probing pocket depths (PPD) included increasing age, smoking and presence of P. gingivalis. PPD > or =3.5 mm were positively associated with loss of attachment some 2 years later. CONCLUSION: This study showed that in a normal adult population, unsupervised use of a triclosan/copolymer dentifrice is effective in slowing the progression of periodontal disease.

Adult↗

PubMed2003

Effect of a combination of fluoride dentifrice and varnish on enamel surface rehardening and fluoride uptake in vitro.

The purpose of this study was to evaluate the effect of combining fluoride dentifrice (FD) and varnish (FV) on in vitro enamel surface rehardening and on fluoride uptake under a pH-cycling regimen. Seventy-eight bovine enamel blocks with early lesions were used and 52 were divided into four treatment groups: (a) placebo non-fluoridated dentifrice (PD); (b); FD (1100 p.p.m. F as NaF); (c); FV (Duraphat) + PD; and (d) FV + FD. The FV was applied to enamel blocks of groups FV + PD and FV + FD before the pH-cycling regimen, and all of them were submitted to dentifrice during cycling. Surface enamel microhardness was determined on the dental blocks before and after demineralization, and after the pH-cycling regimen. The percentage of surface microhardness recovery (%SMHR) was calculated. Fluoride in the blocks was also determined, after removing three layers of enamel. The highest values of percentage SMHR were observed for the FD group. The greatest fluoride uptake was found in the FD and FV + FD groups, but the difference between them was not statistically significant. It was found that the frequent use of fluoride dentifrice resulted in greater benefit in enamel surface rehardening, with a similar effect on fluoride uptake, when compared with its combination with a single fluoride varnish application.

Analysis of Variance↗

PubMed2002

The effects of a novel Bioglass dentifrice on dentine sensitivity: a scanning electron microscopy investigation.

Dentine sensitivity (DS) is a common condition which affects 8-35% of the population. Both In-Office and Over-the-Counter products have been used in treatment, usually occluding open dentine tubules on the exposed root surface. Currently there appears to be no ideal material which permanently occludes dentine tubules. Bioactive and biocompatible glasses are known to induce osteogenesis in physiological systems and may offer suitable materials for surface reactivity which could theoretically occlude tubules. A new dentifrice formulation containing a modified Bioglass material replacing part of the abrasive silica component was compared with original 45S6 bioactive glass. Dentine discs were treated with original Bioglass, three coded dentifrices containing 0, 2.5 and 7.5% Bioglass and two further selected dentifrice products. These specimens were prepared for scanning electron microscopy (SEM) and viewed in a Cambridge stereoscan 90B. The results demonstrated that original bioactive glass particles covered the dentine surface and/or occluded dentine tubules, although this original formulation was easily dislodged. Dentifrice with different ratios of added Bioglass was assessed to provide greater surface coverage and tubule occlusion than without Bioglass. It was concluded that the inclusion of bioactive glass particles in a suitably formulated vehicle may be an effective agent for the treatment of dentine sensitivity.

Biocompatible Materials↗

PubMed1995

Microbial alterations in supragingival dental plaque in response to a triclosan-containing dentifrice.

A total of 325 subjects were entered into a double-blind, stratified 2-treatment clinical study that examined the effects of a dentifrice containing 0.3% triclosan, 2% Gantrez copolymer and 0.243% sodium fluoride on supragingival dental plaque and gingivitis. A subset of 159 subjects including 72 men and 87 women participated in the microbiological component of this study, which was designed to detect shifts in supragingival bacterial species in response to triclosan. Subjects were divided into two groups: one performed normal oral hygiene with the triclosan/copolymer dentifrice and a control group used a placebo dentifrice without triclosan. At baseline, 3 and 6 months during treatment and at 6, 12, 18 and 24 weeks post-treatment, supragingival dental plaque was collected from the buccal and lingual surfaces of the 4 first molar teeth and assayed for: 1) bacterial morphotypes by phase-contrast microscopy; 2) select bacterial groups and bacterial species by culture; and 3) target periodontal pathogens including Actinobacillus actinomycetemcomitans, Bacteroides forsythus, Porphyromonas gingivalis and Prevotella intermedia by immunofluorescence microscopy. There were few statistically significant differences between treatment groups in any of the 90 microbiological parameters measured at the 7 different time points. The control group demonstrated significantly higher levels of cultivable Neisseria and higher proportions at the 3-month treatment period of P. gingivalis-infected subjects and mean cells. After 6 months of treatment, the triclosan group demonstrated higher levels of fusiforms. Analysis of triclosan resistance data failed to detect a shift towards increased proportions of bacteria resistant to triclosan, and both treatment groups demonstrated triclosan-resistant strains, predominantly Veillonella dispar. This study confirms the microbiological safety of triclosan-containing dentifrices and suggests that continued use can be associated with beneficial alterations in the bacterial composition of supragingival dental plaque.

Actinomyces↗

PubMed1987

The influence of a dentifrice containing a zinc salt and a nonionic antimicrobial agent on the maintenance of gingival health.

The purpose of the present investigation was to test the concept that a dentifrice containing zinc citrate and Triclosan could maintain gingival health. The gingival health of 101 young predominately female student nurses in Oslo was brought to a high level by professional cleaning supported by oral hygiene instruction. The criterion of gingival health was less than or equal to 5 elicited bleeding sites from a full mouth assessment. The mean bleeding value attained for the whole group was 3.5. 2 balanced groups were formed, based on the initial number of elicited bleeding sites and plaque values. One group used the test dentifrice and the other group the placebo for 6 months, with an intermediate assessment after 3 months. The placebo group failed to maintain the standard of oral hygiene and gingival health that had been achieved by professional care. In contrast, the group using the test dentifrice for 6 months exhibited similar levels of plaque and gingival health to that observed at baseline following oral hygiene instruction. After 6 months, less than 7% of the subjects in the placebo group possessed healthy gingivae in contrast to 60% of the test group. Thus a dentifrice containing a zinc salt and nonionic germicide had successfully maintained gingival health in a group of young adults.

Adult↗

PubMed1992

Clinical efficacy of a low abrasive dentifrice for the relief of cervical dentinal hypersensitivity.

2 strontium chloride hexahydrate-containing dentifrices (SCH), similar except for their respective abrasive systems, were compared in a 2-month randomised double-blind parallel clinical study to evaluate their comparative effectiveness in terms of cervical dentinal hypersensitivity. 2 groups of 20 subjects, each with cervical dentinal hypersensitivity, were evaluated for tactile sensitivity by Yeaple probe, air sensitivity using a dental air syringe and subjective perception of pain by means of a visual analogue scale. There was no difference between the dentifrices as regards reduction of cervical dentinal hypersensitivity at each time point. The response to both dentifrices was evident within 4 weeks of use and the degree of improvement increased throughout the 8-week study period. The results support the conclusion that changing the abrasive component of SCH dentifrices did not significantly increase or decrease the (desensitizing) activity of the original product.

Adult↗

PubMed1994

Clinical evaluation of a potassium nitrate dentifrice for the treatment of dentinal hypersensitivity.

The effectiveness of a 5% potassium nitrate dentifrice as a daily home treatment for dentinal hypersensitivity was evaluated in a double-blind study in 36 Japanese subjects who complained of cold and/or tactile hypersensitivity. The subjects were divided into 2 groups, with 18 being given a 5% potassium nitrate dentifrice (treated group) and the other 18 a vehicle paste (control group). Both groups were instructed to brush their teeth 2 x a day. The hypersensitivity levels of the affected teeth were assessed by 2 stimuli, one tactile and the other cold air, and by the perception of pain. The results of all 3 assessment methods indicated that the potassium nitrate dentifrice significantly decreased the level of hypersensitivity at weeks 4, 8, and 12. In the treated group, a rapid decrease of positive scores for both the cold air stimulus and the subjective symptoms appeared from week 2. Although a significant decrease of the assessment score was also observed in the control group, the reduction rate of the score was much greater in the treated group by all 3 assessment methods at weeks 4, 8, and 12. Complete relief of subjective symptoms throughout the 12 weeks' examination was noted in 67% of the subjects in the treated group, but in only 6% in the control group. These results suggest the usefulness of a 5% potassium nitrate dentifrice in Japanese patients with dentinal hypersensitivity.

Adult↗

PubMed1997

The use of a triclosan/copolymer dentifrice may retard the progression of periodontitis.

The present investigation was performed to examine if triclosan and a copolymer, incorporated in a dentifrice and used by periodontitis-susceptible subjects could influence clinical symptoms characteristic of recurrent periodontitis. 60 subjects, 34 to 67 years of age, were recruited for the study. They were randomly selected from a group of patients previously treated for advanced periodontal disease. This treatment had included oral hygiene instruction, subgingival debridement, but no surgical therapy. The patients had, during a 3-5 year period following active therapy, been enrolled in a maintenance care program but had, at various intervals, exhibited signs of recurrent periodontitis. The patients were stratified into 2 balanced groups with respect to mean probing pocket depth. The test group, included 30 individuals who used a dentifrice containing triclosan/copolymer/fluoride, i.e. 0.3% triclosan, 2% copolymer and 1100 ppm F from 0.243% sodium fluoride (Colgate Total). The control group also included 30 subjects who used a dentifrice identical to the one used in the test group but without the triclosan/copolymer content. Following the baseline examination, including clinical and radiographical assessments, all volunteers received detailed information on how to brush their teeth in a proper way. This information was repeated on an individual need basis during the course of the subsequent 36 months. No professional subgingival therapy was delivered between the baseline and the 36-month examinations, but the subjects were recalled every 3 months. Re-examinations were performed after 6, 12, 24, and 36 months of the trial. A 2nd set of radiographs was obtained at the final examination, i.e., at 36 months. The results demonstrated that in subjects susceptible to periodontal disease, meticulous, self-performed, supragingival plaque control maintained over a 3-year period failed to prevent recurrent periodontitis. In a similar group of subjects and plaque control program, however, the daily use of a triclosan-containing dentifrice reduced (i) the frequency of deep periodontal pockets, and (ii) the number of sites that exhibited additional probing attachment and bone loss.

Adult↗

PubMed1978

A laboratory evaluation of fluoride dentifrices used in Greece.

A laboratory investigation of the fluoride dentifrices commonly used in Greece was done in order to evaluate their caries-preventive potential. The evaluation was based on the determination of the free ionic fluoride and the total soluble fluoride present by a potentiometric fluoride electrode technique. Dentifrices containing MFP, NaF and AlF3 were analyzed. The measured total soluble and free ionic fluoride content were discussed in conjunction with the various dentifrice components. Most of the examined dentifrices were MFP type and the free ionic fluoride was found to vary from 130 to 180 parts/10(6) F-.

Dentifrices↗

PubMed1990

Six-month study of the effect of a dentifrice containing zinc citrate and triclosan on plaque, gingival health, and calculus.

In two previous studies gingival health was maintained for at least 12 months by a dentifrice containing zinc citrate and triclosan. The aims of the present study were to determine if a zinc/triclosan dentifrice would stabilize gingival health if a lower concentration of zinc was used and to investigate its effect on the formation of calculus. 101 men and women were given oral hygiene instruction and their teeth were professionally cleaned. Two balanced groups were then formed, based on the prestudy levels of gingival bleeding and calculus. One group used the zinc/triclosan dentifrice for 6 months, while the other used a control. Results were assessed after 3 months and 6 months. Following the oral hygiene instruction, plaque and gingival bleeding were assessed at the end of the 4-wk period preceding the experimental phase, and both had been reduced. This improvement was not maintained by the control group, whereas the test group exhibited significantly lower plaque levels and a higher standard of gingival health throughout the 6 months. After 3 months, levels of calculus in the control group had returned to prestudy levels. At both the 3- and 6-month assessments, significantly less calculus was observed in the test group. The improved plaque control, stabilized gingival health, and reduced calculus formation support the conclusion that a dentifrice containing 0.5% zinc citrate and 0.2% triclosan can contribute to oral care.

Adult↗

PubMed1997

Efficacy of a dentifrice and oral rinse containing sanguinaria extract in conjunction with initial periodontal therapy.

In the treatment of periodontal disease initial therapy aims at reducing marginal inflammation so allowing assessment of residual disease and further treatment options. The aim of the present study was to determine whether the use of a dentifrice and oral rinse containing sanguinaria extract led to a more rapid resolution of gingival inflammation following initial therapy. Thirty-four subjects, randomly assigned to one of two treatment groups, took part in this randomized double-blind parallel study. All subjects received initial therapy including oral hygiene instruction and scaling and root planing as required. One group also received an active dentifrice and oral rinse containing sanguinaria extract (an antiplaque agent) and zinc chloride. The other group received a placebo dentifrice and oral rinse. The gingival index (GI), plaque index (PLI) and probing pocket depths (PD) were recorded at six sites per tooth at baseline, two weeks after initial therapy and six weeks after initial therapy. There was no significant difference between the groups for any of the parameters at the baseline examination. Two weeks following initial therapy both groups showed a statistically significant increase in the number of sites with PLI of 0 or 1 (p < 0.0001) and a statistically significant increase in the number of sites with a GI of 0 or 1 (that is, no bleeding on probing), (p < 0.0001). Also there was a statistically significant increase in the number of sites with probing depths < or = 3 mm (p < 0.0001) compared with baseline. These changes were maintained through to six weeks post therapy. There was no significant advantage to the sanguinaria group. Results demonstrate that initial therapy in the form of oral hygiene instruction, scaling and root planing leads to a significant improvement in periodontal status which is maintained at least in the short term. Further, use of a dentifrice and oral rinse containing sanguinaria did not improve the efficacy of initial therapy.

Adult↗