Lipocalin-Type Prostaglandin D Synthase Is a Novel Phytocannabinoid-Binding Protein.

Lipocalin-type prostaglandin D synthase (L-PGDS; EC:5.3.99.2) is an enzyme with dual functional roles as a prostaglandin D2 -synthesizing enzyme and as an extracellular transporter for diverse lipophilic compounds in the cerebrospinal fluid (CSF). Transport of hydrophobic endocannabinoids is mediated by serum albumin in the blood and intracellularly by the fatty acid binding proteins, but no analogous transport mechanism has yet been described in CSF. L-PGDS has been reported to promiscuously bind a wide variety of lipophilic ligands and is among the most abundant proteins found in the CSF. Here, we examine the binding of several classes of endogenous and synthetic ligands to L-PGDS. Endocannabinoids exhibited low affinity toward L-PGDS, while cannabinoid metabolites and synthetic cannabinoids displayed higher affinities for L-PGDS. These results indicate that L-PGDS is unlikely to function as a carrier for endocannabinoids in the CSF, but it may bind and transport a subset of cannabinoids.

High throughput discovery of families of high activity WGS catalysts: part I--history and methodology.

State-of-art water gas shift catalysts (FeCr for high temperature shift and CuZn for low temperature shift) are not active enough to be used in fuel processors for the production of hydrogen from hydrocarbon fuels for fuel cells. The need for drastically lower catalyst volumes has triggered a search for novel WGS catalysts that are an order of magnitude more active than current systems. Novel catalytic materials for the high, medium and low temperature water gas shift reactions have been discovered by application of combinatorial methodologies. Catalyst libraries were synthesized on 4 inch wafers in 16 x 16 arrays and screened in a high throughput scanning mass spectrometer in the temperature range 200 degrees C to 400 degrees C. More than 200 wafers were screened under various conditions and more than 250,000 experiments were conducted to comprehensively examine catalyst performance for various binary, ternary and higher-order compositions.

The global increase in dental caries. A pending public health crisis.

A current review of the available epidemiological data from many countries clearly indicates that there is a marked increase in the prevalence of dental caries. This global increase in dental caries prevalence affects children as well as adults, primary as well as permanent teeth, and coronal as well as root surfaces. This increase in dental caries signals a pending public health crisis. Although there are differences of opinion regarding the cause of this global dental caries increase, the remedy is well known: a return to the public health strategies that were so successful in the past, a renewed campaign for water fluoridation, topical fluoride application, the use of fluoride rinses, a return to school oral health educational programs, an emphasis on proper tooth brushing with a fluoride dentifrice, as well as flossing, a proper diet and regular dental office visits. If these remedies are not initiated, there could be a serious negative impact upon the future oral health (and systemic health) of the global community, as well as a strain on the dental profession along with a major increase in the cost of dental services.

Clinical investigation of the anticaries efficacy of a 1.14% sodium monofluorophosphate (SMFP) calcium carbonate-based dentifrice: a two-year caries clinical trial on children in China.

OBJECTIVE: The objective of this two-year comparative investigation was to assess the anticaries efficacy of three dentifrices commercially available in China. Two products contained the stated active agent sodium monofluorophosphate (SMFP) at a concentration of 1.14%; one was calcium carbonate-based, the second was silica-based. The third dentifrice tested contained no fluoride and was calcium carbonate-based. METHODS: Prior to the start of this double-blind, parallel-group study, all aspects of the study were reviewed and approved by the human review committee of the West China College of Stomatology, Sichuan University. All parents signed the approved consent form before the initial evaluations. A total of 1200 qualifying children living in the Chengdu, China area entered the study, and 998 children completed all aspects of the study. Subjects were randomly assigned to use one of the three dentifrices: 328 participants used the non-fluoride calcium carbonate-based dentifrice; 341 participants used the 1.14% SMFP silica-based dentifrice; and 329 participants used the 1.14% SMFP calcium carbonate-based dentifrice. Participants were instructed to brush their teeth with their assigned dentifrice twice daily. Brushing instructions were reinforced. RESULTS: At the baseline examination, the mean dfs (decayed and filled tooth surfaces) scores of the non-fluoride dentifrice group (3.60 +/- 6.07),the 1.14% SMFP silica-based dentifrice group (3.53 +/- 5.62), and the 1.14% SMFP calcium carbonate-based dentifrice group (3.54 +/- 5.34) were not statistically different (p > 0.05). After one year, the mean dfs increment of the non-fluoride dentifrice group was 2.19 +/- 4.12, 1.69 +/- 3.12 for the 1.14% for the SMFP silica-based dentifrice group, and 1.53 +/- 3.09 for the 1.14% SMFP calcium carbonate-based dentifrice group; after two years, the mean dfs increments were 4.73 +/- 5.17, 2.98 +/- 4.42, and 2.75 +/- 4.33, respectively. Both the 1.14% SMFP calcium carbonate-based and the 1.14% SMFP silica-based dentifrices provided significantly more caries reduction than the non-fluoride silica-based dentifrice after one year (-30% and -23%) and two years (-42% and -37%) of product use. The 1.14% SMFP calcium carbonate-based dentifrice was not significantly different from the 1.14% SMFP silica-based dentifrice after one and two years of use. CONCLUSION: The results of this clinical study indicate that the 1.14% SMFP calcium carbonate-based and the 1.14% SMFP silica-based dentifrices are effective against tooth decay compared to brushing with a non-fluoride toothpaste.

Clinical effectiveness of a dentifrice containing triclosan and a copolymer for controlling breath odor.

PURPOSE: To investigate in a double-blind clinical study the effectiveness of a dentifrice containing triclosan and a copolymer (Colgate Total Toothpaste) for controlling breath odor 12 hours after brushing the teeth. METHODS: A panel of four expert judges using a nine-point hedonic scale evaluated breath odor. Following a baseline evaluation of breath odor, prospective study subjects who presented breath odor scores above the threshold value for unpleasant breath odor were stratified by score, and randomized into two treatment groups. Subjects were provided with a soft-bristled toothbrush, and brushed their teeth thoroughly in their regular and customary manner with their assigned dentifrice. Subjects refrained from dental hygiene, breath mints, or mouthrinses for the next 12 hours, after which they were once again evaluated for breath odor. 76 adult male and female subjects from the Mississauga, Ontario, Canada area participated in the study. RESULTS: At 12 hours after brushing their teeth, subjects in both dentifrice treatment groups presented mean breath odor scores which were statistically significantly lower than the mean scores observed at baseline. However, the difference between the mean 12-hour breath odor score for the Colgate Total group was 4.65, which is within the range of values corresponding to pleasant breath odor; whereas the mean 12-hour breath odor score for the placebo group was 6.11, which is above the threshold value corresponding to unpleasant breath odor. Thus, the results of this double-blind study, conducted according to Guidelines by the Council on Scientific Affairs of the American Dental Association, support the conclusion that Colgate Total dentifrice provides effective control of breath odor at 12 hours after brushing the teeth.

Discovery of novel catalytic materials for emissions control using high throughput scanning mass spectrometry.

High-throughput approaches were applied to the discovery of more efficient catalysts for various applications in emissions control. The screening approach was based on a hierarchy of qualitative or semi-quantitative primary screens for discovery of hits and quantitative secondary screens for confirmation and scale-up of leads. In this work, primary screening was carried out by fast scanning mass spectrometry (SMS) for NO(x) abatement, low temperature CO oxidation, VOC removal, CO(x) methanation and the water gas shift (WGS) reaction.

High throughput screening of low temperature CO oxidation catalysts using IR thermography.

The catalytic oxidation of carbon monoxide to carbon dioxide is an important process used in several areas such as respiratory protection, industrial air purification, automotive emissions control, CO clean-up of flue gases and fuel cells. Research in this area has mainly focused on the improvement of catalytic activity at low temperatures. Numerous catalyst systems have been proposed, including those based on Pt, Pd, Rh, Ru, Au, Ag, and Cu, supported on refractory or reducible carriers or dispersed in perovskites. Well known commercial catalyst formulations for room temperature CO oxidation are based on CuMn2O4 (hopcalite) and CuCoAgMnOx mixed oxides. We have applied high-throughput and combinatorial methodologies to the discovery of more efficient catalysts for low temperature CO oxidation. The screening approach was based on a hierarchy of qualitative and semi-quantitative primary screens for the discovery of hits, and quantitative secondary screens for hit confirmation, lead optimization and scale-up. Parallel IR thermography was the primary screen, allowing one wafer-formatted library of 256 catalysts to be screened in approximately 1 hour. Multi-channel fixed bed reactors equipped with imaging reflection FTIR spectroscopy or GC were used for secondary screening. Novel RuCoCe compositions were discovered and optimized for CO oxidation and the effect of doping was investigated for supported and bulk mixed oxide catalysts. Another family of active hits that compare favorably with the Pt/Al2O3 benchmark is based on RuSn, where Sn can be used as a dopant (e.g. RuSn/SiO2) and/or as a high surface area carrier (e.g., SnO2 or Sn containing mixed metal oxides). Also, RuCu binary compositions were found to be active after a reduction pretreatment with hydrogen.

Cobalt-catalyzed dimerization of alpha-olefins to give linear alpha-olefin products.

[Cp*P(OMe)3CoCH2CH3]+ [BarF]-, generated by the addition of HBArF to Cp*P(OMe)3Co(ethene), catalyzes the oligomerization of 1-hexene to give dimers and trimers. When a deficit of the acid is used, linear alpha-olefin dimers are produced at the expense of trimeric products: e.g., 1-butene, 1-hexene, and 1-octene give 1-octene, 1-dodecene, and 1-hexadecene, respectively.

Advanced oral antibacterial/anti-inflammatory technology: A comprehensive review of the clinical benefits of a triclosan/copolymer/fluoride dentifrice.

INTRODUCTION: Triclosan is a broad-spectrum antibacterial agent, marketed for use in oral products. It is effective against both gram-positive and gram-negative bacteria. PVM/MA is the non-proprietary designation for a polyvinylmethyl ether maleic acid copolymer. It has been demonstrated that there is a greater uptake of triclosan to enamel and buccal epithelial cells from the use of a fluoride dentifrice containing triclosan and the PVM/MA copolymer than from a dentifrice containing triclosan alone. This Supplement details the results of antibacterial, anti-inflammatory, and short- and long-term plaque and gingivitis studies with a triclosan/copolymer/ fluoride dentifrice. Additionally, the Supplement reviews studies on the effect of a triclosan/copolymer/fluoride dentifrice on periodontitis, calculus, caries, whitening and stain removal, oral malodor, and on the microflora. CONCLUSION: Clinical studies indicate that the use of a triclosan/copolymer/fluoride dentifrice (Colgate Total Toothpaste) may provide oral health benefits beyond those associated with "traditional" toothpaste use, in a manner that is safe and effective. Studies presented in this Supplement demonstrate that Colgate Total Toothpaste provides superior protection against plaque and gingivitis, caries, oral malodor, exhibits superior stain removal, and provides protection against the progression of periodontal disease.

Productive chloroarene C-cl bond activation: palladium/phosphine-catalyzed methods for oxidation of alcohols and hydrodechlorination of chloroarenes.

The palladium/phosphine-catalyzed productive chloroarene C-Cl bond activation provides general, efficient, and functional group friendly methods for the selective oxidation of alcohols and the hydrodechlorination of chloroarenes.

The scientific rationale and development of an optimized dentifrice for the treatment of dentin hypersensitivity.

PURPOSE: To describe the development of a new dentin hypersensitivity treatment, Colgate Sensitive Maximum Strength dentifrice, containing 5% potassium nitrate as the anti-hypersensitivity active agent. The objective was to develop a home-use hypersensitivity dentifrice that would be superior to the market leader, improving on what is available, which also contains 5% potassium nitrate as the anti-hypersensitivity active agent. METHODS: In vivo (clinicals, taste evaluation and rat caries), in vitro (potassium flux) and analytical (rheology, dispensed volume, scanning electron microscopy, electron scanning chemical analysis and radioactive dentin abrasion) methods were performed. RESULTS: The objective was accomplished with the development of a new activated silica technology that resulted in enhanced potassium ion activity. In vitro documentation, supported by clinical studies, demonstrated that the resulting formula is more effective than the market leader for relief of hypersensitivity pain. Fast pain relief in less than 2 weeks and long-lasting protection against pain with regular use have also been clinically documented. Furthermore, FDA-required in vivo and in vitro studies indicate that this formula, which contains 0.45% stannous fluoride (1100 ppm fluoride) as the anti-caries active agent, is effective against caries. Good taste, acceptable rheology, acceptable abrasivity, and cosmetic and chemical stability have all been engineered into this unique dentin hypersensitivity treatment. In summary, a highly efficacious consumer friendly treatment for dentin hypersensitivity has been developed.

Comparative investigation of the desensitizing efficacy of a new dentifrice containing 5.5% potassium citrate: an eight-week clinical study.

OBJECTIVE: This double-blind clinical study was designed to investigate the relative effectiveness of a new desensitizing test dentifrice containing 5.5% potassium citrate, 1.14% sodium monofluorophosphate (MFP) and 10% high-cleaning silica (HCS) in a silica base for reducing dentinal hypersensitivity over an eight-week period, to that of a commercially available desensitizing positive control dentifrice containing 3.75% potassium chloride, 0.32% sodium fluoride and 0.3% triclosan in a silica base. METHODOLOGY: A total of 80 subjects were entered into the study, and stratified into two balanced groups according to their baseline mean thermal (air blast) and baseline mean tactile (Yeaple Probe) sensitivity scores. The two groups were randomly assigned to use either the test dentifrice containing potassium citrate/MFP/HCS, or the positive control dentifrice containing potassium chloride/sodium fluoride/triclosan. The two groups were well balanced with regard to their mean baseline thermal and tactile sensitivity scores, sex and age. Subjects were instructed to brush their teeth twice daily (morning and evening) for one minute with their assigned dentifrice and a commercially available soft-bristled toothbrush. Dentinal hypersensitivity examinations, which included tactile sensitivity and thermal sensitivity, were conducted at baseline, four weeks, and eight weeks. Examinations were conducted by the same dental examiner on the subjects at each examination. RESULTS: After four weeks' use of their assigned products, those subjects in the test dentifrice group demonstrated no statistically significant difference for controlling dentinal hypersensitivity as compared to the positive control dentifrice group in tactile and air blast. After eight weeks' use of their assigned products, those subjects in the test dentifrice group again demonstrated no statistically significant difference in tactile and air blast sensitivity as compared to the positive control dentifrice group. CONCLUSION: The results of this double-blind clinical study indicate that the use of a commercially available test dentifrice containing 5.5% potassium citrate, 1.14% sodium monofluorophosphate and 10% high-cleaning silica in a silica base demonstrates no statistically significant difference in tactile and air blast sensitivity compared to the commercially available desensitizing positive control dentifrice containing 3.75% potassium chloride, 0.32% sodium fluoride and 0.3% triclosan in a silica base.

Comparative tooth whitening efficacy of 18% carbamide peroxide liquid whitening gel using three different regimens.

OBJECTIVE: Recently, a novel paint-on liquid whitening gel--Colgate Simply White Clear Whitening Gel--which contains 18% carbamide peroxide, has been developed as a self-administered tooth bleaching system. The purpose of the present study was to determine the efficacy and safety of this product using alternate exaggerated or simplified treatment regimens. METHODOLOGY: This was a three-week clinical trial using a parallel, double-blind, stratified protocol with three different instructions for application: 1) twice-daily, no air-drying, and 15 minutes without eating/drinking; 2) three times daily, 30-second air-drying and 30 minutes without eating/drinking; or 3) four times daily, 30-second air-drying and 30 minutes without eating/drinking. One-hundred and twenty (120) healthy volunteers were balanced into three equal groups based on shade scores (A3 or darker). Clinical evaluations (shade guide, oral tissue health, gingival index and visual analog sensitivity score) were performed on each group at baseline and weekly for the next 21 days. At the conclusion of the study, a survey of the subjects' opinions on their assigned product regimen was also conducted. RESULTS: Subjects who used Colgate Simply White Clear Whitening Gel three and four times daily achieved the greatest shade improvement (5.88 +/- 1.53 shades, and 5.57 +/- 1.54, respectively). However, these values were only about one shade better than the value observed for the more convenient, twice-daily, "no-dry" regimen (4.51 +/- 1.77 shades), though they were statistically significant (p < 0.05). The result for the four-times daily protocol was not statistically different from the three-times group. Also, no differences were observed between the groups concerning oral tissue health, gingival index or tooth sensitivity, and no adverse effects were observed or reported regardless of the regimen used. Surveys completed by the subjects showed that those who used the twice-daily, "no-dry" regimen found the product to be the easiest to use, the most comfortable and the most pleasant tasting. CONCLUSION: It can be concluded from the clinical data that three or four applications of Colgate Simply White Clear Whitening Gel per day provided better efficacy. In addition, the use of the whitening gel twice daily, even without "dry time" and only 15 minutes without eating/drinking, yielded results that were comparable to previously reported results using the original on-label directions. The potential additional benefit to the "simplified regimen" is that it was perceived to be the most convenient and comfortable. The use of Colgate Simply White Clear Whitening Gel up to four times daily for up to three weeks is also safe, and the tendency of abusing the product with more frequent daily use may be deterred by the inconvenience reported by the study subjects.

Comparison of the clinical efficacy of a new manual toothbrush on gingivitis reduction and plaque removal.

The objective of this controlled, examiner blind, 4-week clinical study was to evaluate and compare the safety and efficacy of a newly designed manual toothbrush, the Colgate 360 degrees toothbrush, to the Oral-B Indicator toothbrush for the control of supragingival plaque and gingivitis. A total of 82 subjects from the northern New Jersey area reported to the clinical facility for a baseline plaque and gingivitis examination after having refrained from all oral hygiene procedures for 12 hours and from eating, drinking, or smoking for 4 hours. The population was comprised of healthy adult men and women 30 to 68 years of age. After the baseline examinations, qualifying subjects were randomized into two groups and assigned to one of the two test toothbrushes. All subjects were instructed to brush their teeth for 1 minute under supervision, after which they were again examined for supragingival plaque. They were then instructed to brush their teeth twice a day for 1 minute with their assigned toothbrush and a commercially available toothpaste (Colgate Cavity Protection Great Regular Flavor Fluoride Toothpaste) for the next 4 weeks. After 4 weeks, subjects returned to the clinical facility for a final gingivitis and plaque examination. Eighty-one subjects complied with the protocol and completed the 4-week clinical study. The results of the study indicated that the new manual toothbrush was statistically significantly effective in reducing gingivitis after 4 weeks and in removing plaque after a single toothbrushing and after 4 weeks of use. Also, the new manual toothbrush exhibited a statistically significant greater reduction in gingivitis and in gingivitis-related bleeding sites after 4 weeks of use as well as statistically significant greater plaque removal after a single toothbrushing and after 4 weeks of use, as compared to the Oral B Indicator toothbrush. This superior plaque-removal performance was found in separate analyses of the whole mouth, at interproximal surfaces, and at the gumline.

A clinical comparison of the gingivitis reduction and plaque-removal efficacy of a new manual toothbrush.

The objective of this controlled, examiner-blind, 4-week clinical study was to evaluate and compare the safety and efficacy of a newly designed manual toothbrush (Colgate 360 degrees toothbrush) to the Oral-B CrossAction toothbrush for the control of supragingival plaque and gingivitis. A total of 80 subjects from the central New Jersey area reported to the clinical facility for a baseline plaque and gingivitis examination after having refrained from all oral hygiene procedures for 12 hours and from eating, drinking, or smoking for 4 hours. The population was comprised of healthy adult men and women 18 to 67 years of age. After the baseline examinations, qualifying subjects were randomized into two groups and assigned to one of the two test toothbrushes. All subjects were instructed to brush their teeth for 1 minute under supervision, after which they were again examined for supragingival plaque. They were then instructed to brush their teeth twice a day for 1 minute with their assigned toothbrush and a commercially available toothpaste (Colgate Cavity Protection Great Regular Flavor Fluoride Toothpaste) for the next 4 weeks. After 4 weeks of use, subjects returned to the clinical facility for a final gingivitis and plaque examination. Seventy-eight subjects complied with the protocol and completed the 4-week clinical study. The results of the study indicated that the new manual toothbrush was statistically significantly effective in reducing gingivitis after 4 weeks and in removing plaque after a single toothbrushing and after 4 weeks of use. Also, the group using the new manual toothbrush exhibited a statistically significant greater reduction in plaque of up to 40% and no statistically significant difference in gingivitis reduction after 4 weeks of use, as compared to the Oral-B CrossAction toothbrush.

Is there anything left for the next generation of leaders?

Dean Arthur A. Dugoni is celebrated as the "dean of deans" or American dental schools. His service as a practitioner, rich network of relationships, recognition of emerging opportunities, respectful treatment of all, and ability to make people care and promote loyalty are identified. Significant issues remain for future leadership to address: dental caries is on the rebound, insurance is inadequate to provide needed coverage, prevention must be strengthened, education struggles with too few teachers and high tuition, the mobility of dentists is unrealistically restricted, and the pool of retired dentists who want to donate their services is hobbled by regulations. The ADA can take the leadership in some of these areas, but there is much left to be done by the next generation of individual leaders in the mold of Dean Dugoni.

A clinical investigation of the efficacy of a tooth-whitening gel.

The objective of this randomized, controlled, examiner-blind, parallel-group clinical study was to determine whether a tooth-whitening gel (Colgate Simply White Night Clear Whitening Gel) can significantly lighten teeth when used once daily at night, as compared with a commercially available dentifrice. Following a baseline tooth shade evaluation using the VITA Shade Guide, qualifying adult male and female subjects from the Buffalo, New York area were randomized into 2 treatment groups, which were balanced for baseline VITA Shade Guide scores, gender, and age. The treatment groups were: (1) a commercially available dentifrice only; and (2) a tooth-whitening gel in addition to a commercially available dentifrice. Subjects assigned to the 2 groups were given the dentifrice and a soft-bristled toothbrush. In addition, subjects in one of the groups were given the tooth-whitening gel. All subjects were instructed to brush their teeth for 1 minute twice daily (morning and evening) with the dentifrice. The subjects in the group also using the tooth-whitening gel were further instructed to apply the gel once daily at night, as per manufacturer instructions. Evaluations of tooth shade for each subject were repeated after 2 weeks, and again after 3 weeks of product use. In addition, evaluations of tooth shade for subjects using the tooth-whitening gel were later conducted at 6 months after product use. Seventy-five subjects complied with the protocol and completed the study. At the 2-week and 3-week examinations, subjects using the tooth-whitening gel and dentifrice exhibited statistically significant (P < .05) tooth shade lightening relative to baseline tooth shade. Furthermore, at the 2-week and 3-week examinations, subjects using the tooth-whitening gel exhibited statistically significant (P < .05) tooth shade lightening relative to subjects using only the dentifrice. In addition, the 6-month-postuse examination showed that subjects using the tooth-whitening gel exhibited statistically significant (P < .05) tooth shade lightening relative to baseline, thereby maintaining the tooth shade lightening that was evident at 3 weeks. The results of this clinical study indicate that after once-daily use at night for 2 or 3 weeks, the tooth-whitening gel provided statistically significant tooth shade lightening relative to baseline tooth shade for up to at least 6 months and also provided statistically significant tooth shade lightening relative to a commercially available dentifrice after 2 and 3 weeks of product use.

Clinical effectiveness of a triclosan/copolymer/sodium-fluoride dentifrice in controlling oral malodor: a three-week clinical trial.

The purpose of this study was to compare the effectiveness of a commercially available, clinically proven, American Dental Association (ADA)-Accepted dentifrice containing 0.30% triclosan, 2% polyvinylmethylether/maleic acid (PVM/MA) copolymer, and 0.243% sodium fluoride in a 10% high-cleaning silica base (Colgate Total Advanced Fresh) to a commercially available, clinically proven, ADA-Accepted control dentifrice containing 0.243% sodium fluoride in a silica base (Colgate Cavity Protection Winterfresh Gel) for the management of oral malodor in a 3-week, randomized, double-blind longitudinal clinical trial. A panel of four expert judges used a nine-point hedonic scale to evaluate breath odor using a protocol designed in concordance with the ADA Draft Acceptance Program Guidelines for Products Used in the Management of Oral Malodor. After a baseline evaluation, prospective study subjects who scored above the threshold value for unpleasant breath odor were stratified by score and randomized into two treatment groups. Subjects were provided with a soft-bristled toothbrush and brushed their teeth thoroughly in their regular and customary manner for 1 minute with their assigned dentifrice, twice daily. Before oral-malodor evaluations, the subjects refrained from eating odorigenic foods and did not use dental hygiene procedures, breath mints, or mouth rinses. Eighty-one adult men and women from Chengdu, China, completed the study. Throughout the study, the mean breath-odor scores observed in the Colgate Total Advanced Fresh toothpaste group for both daytime and overnight were within the range of values associated with pleasant breath odor, were statistically significantly lower than the corresponding mean scores for the control group, and also represented statistically significant reductions from baseline. Relative to the baseline score, more than 80% of the subjects in the Colgate Total Advanced Fresh toothpaste group demonstrated a 3.2 or more unit reduction in organoleptic scores at every postbaseline breath-odor evaluation. Thus, the overall results of the double-blind clinical study support the conclusions that Colgate Total Advanced Fresh toothpaste is efficacious for the control of oral malodor for up to 12 hours in the daytime and up to 12 hours overnight.