Chewing Gum Research Articles

A chewing gum containing ethylenediaminetetraaceticacid (EDTA), methyl sulfonyl methane (MSM) and xylitol works comparable to chlorehexidine mouthrinse.

Dental plaque provides a proper environment for the growth and activity of bacteria responsible for periodontal diseases and caries. As a result, it should be removed by individuals to prevent periodontal diseases and caries. There are different mechanical and chemical plaque control methods. In one study is shown that dental plaque removal efficacy of dentifrice containing Ethylenediaminetetraaceticacid(EDTA)/Methylsulfonylmethane(MSM) was nearly five times that of commercially available fluoride toothpaste. In another study, authors found that xylitol-containing chewing gums caused a marked reduction in the count of Streptococcus Mutans compared to conventional ones. This difference was highly prominent in individuals with poor oral hygiene. In this study we assessed the synergic effects of Xylitol, EDTA and MSM in a chewing gum in comparison with chlorhexidine mouthwash. This study was a crossover, randomized clinical trial. Twenty-four patients were divided in two groups randomly. At the baseline scaling and root planing was done for each patient. Group1 used chlorhexidine mouthwash twice a day. Group2 used novel chewing gum for 15min twice a day. After 14 days, for every patient O'leary plaque index, gingival index and sulcus bleeding index were reevaluated and recorded. Professional brushing was done for patients. 14 days were considered as wash-out period. After that, method of plaque control of groups was changed. After 14 days, all patients were reevaluated and recorded and were compared with previous data. Samples in 2 groups had no significant difference in age and sex. Paired sample t test revealed that there were significant differences between first and second period for O'leary plaque index, gingival index and sulcus bleeding index in Group1 (P < 0.05). But in Group2 there were no differences between first and second period for all indexes. Also independent sample t test showed that there were no significant differences between baseline, after first treatment and after second one for all indexes in both groups (P > 0.05). According to regression model results, type of treatment had no effect on mean of all indexes. According to our findings which showed the similar efficiency of novel chewing gum and chlorhexidine mouthwash in improving and reducing plaque and gingival indexes, we can conclude that novel chewing gum can be introduced as an effective, cheap and accessible tool for dental plaque control.

Comparison of the oral health status of nursing home residents using the current and the newly developed interRAI oral health section (OHS-interRAI): a cross-sectional study.

Regular dentall check-ups and good oral hygiene are challenging fornursing home residents, resulting in poor oral health. The interRAI instrument for Long-Term Care Facilities (LTCF) enables caregivers to evaluate residents' health, including oral health, and to integrate oral care into general care planning. Because the current oral heal1th section in the interRAI instruments does not accurately identify residents who need help with daily oral care or dental referral, the interRAI Oral Health Section (OHS-interRAI) was developed. The OHS-interRAI differs from the current section by including more items, response options and guidelines, photographs, instruction videos, and Collaborative Action Points to alert caregivers when oral care is needed. This study describes and compares residents' oral health status assessed by caregivers using the current section and the OHS-interRAI. This cross-sectional study includes baseline data of adults aged 65 years or older in Flemish and Dutch nursing homes, collected by professional caregivers (e.g., nurses, nurse aids, therapists). Assessments with the current section dated from October 2016 to January 2023, and with the OHS-interRAI from October 2020 to January 2023. InterRAI assessments of 12,476 residents from 158 nursing homes with the current section were compared with those of 1212 residents from 37 nursing homes with the OHS-interRAI. The OHS-interRAI assessments showed more missing data. A higher proportion of oral health problems was detected with the OHS-interRAI compared to the current section for chewing function (13.7% vs. 6.8%), dry mouth (9.8% vs. 7.6%), teeth (22.1% vs. 16.6% ),and gums (7.8% vs. 3.1%). There was no significant difference in the proportion of residents with discomfort or pain in the mouth. More missing OHS-interRAI data may be attributed to regulatory decisions on using the interRAI LTCF instrument. Caregivers identified more oral health problems with the OHS-interRAI, which may be due to its additional features, such as photographs and extensive instructions. The Collaborative Action Points included in the OHS-interRAI support continuity of care and enable integration of oral care into general care. Further research is needed to evaluate whether the OHS-interRAI accurately identifies residents who need help with daily oral hygiene or dental referral.

Total and unprotonated (freebase) nicotine content in new types of oral ‘tobacco-free’ nicotine products

SignificanceNicotine-containing products, labelled as being ‘tobacco-free’ nicotine (TFN), are marketed to consumers as alternatives to conventional tobacco products. Little is known about these emerging products and their contents.MethodsMoisture, total nicotine...

Efficiency of chewing load deficiency correction in clinical dental practice

Weakening of the chewing act, typical for modern humans due to consumption of soft food, causes a deficit of chewing load and has a negative effect on the dental system. To combat hypodynamia of the masticatory apparatus with the aim of preventing destructive processes in its structures, a gnathotraining system was developed, including electrical stimulation of the masticatory muscles themselves in physiological parameters, which develops the effect of “imaginary chewing”, and gnathotraining using chewing gum. In addition, functional training of the masticatory apparatus using chewing exercises was proposed. Considering that chewing gum practically does not compensate for the deficit of chewing load observed in modern society, the staff of the Kazan State Medical University and the Kazan National Research Technological University developed the “Denta Fit” dental trainer and a dental training system. It has been established that dental and jaw training stimulates secretion of saliva, its mineralizing potential, functional resistance of tooth enamel, allows achieving a good level of oral hygiene, reduces the rate of increase in the intensity of dental caries, as well as the severity of muscular-articular disorders of the temporomandibular joints, enhances neuromuscular activity of the masticatory muscles and regional blood flow. In children with permanent bite, dental and jaw training maintains the hydrogen index (pH) of oral fluid at a neutral level and provides, in combination with a toothbrush, optimal hygienic dental care, contributes to the formation of a correct dental occlusion. Thus, the effects of increased neuromuscular activity of the masticatory muscles, as well as regional vascular tone, arising during dental and jaw training, indirectly indicate that the dental and jaw system receives adequate mechanical loads necessary for the normal functioning of all its links. The results of the conducted studies indicate the effectiveness and feasibility of using dental training to improve dental status, which serves as a new approach to the prevention and treatment of dental diseases.

Recovery of gastrointestinal functional after surgery for abdominal tumors: A narrative review.

Postoperative gastrointestinal dysfunction, including temporary nonmechanical suppression of gastrointestinal motility (known as postoperative ileus), occurs in about 10% surgeries of abdominal tumors. Since these complications can prolong hospitalization and affect eating, it is important to understand their risk factors and identify effective interventions to manage or prevent them. The present review comprehensively examined the relevant literature to describe risk factors for postoperative ileus and effective interventions. Risk factors include old age, open surgery, difficulty of surgery, surgery lasting longer than 3 hours, preoperative bowel treatment, infection, and blood transfusion. Factors that protect against postoperative ileus include early enteral nutrition, minimally invasive surgery, and multimodal pain treatment. Interventions that can shorten or prevent such ileus include minimally invasive surgery, early enteral nutrition as well as use of chewing gum, laxatives, and alvimopan. Most of these interventions have been integrated into current guidelines for enhanced recovery of gastrointestinal function after surgery. Future high-quality research is needed in order to clarify our understanding of efficacy and safety.

Comparison of masticatory performance and oral hygiene status using cream-type denture adhesives and home liners: A cross-sectional study using propensity-score matching.

Differences in the effects of cream-type denture adhesives and home liners remain unclear. This cross-sectional study aimed to clarify the differences in the oral-hygiene status and masticatory performance between participants using cream-type denture adhesives and those using home liners. Masticatory performance with and without cream-type denture adhesives and home liners was evaluated using colour-changeable chewing gum. Oral hygiene was assessed using the tongue coating index (TCI). Propensity-score matching was performed using oral moisture, presence of palatal or mandibular protuberances, type of residual ridge, denture type (complete or partial denture), and denture retention as background factors. Wilcoxon signed-rank test was used to examine the differences in masticatory performance with and without cream-type denture adhesives and home liners and differences in masticatory performance and TCI between the cream-type denture adhesive and home-liner groups. This study included 38 and 40 cream-type adhesive and home-liner users, respectively, and 17 pairs were obtained after propensity-score matching. The Wilcoxon signed-rank tests showed that masticatory performance was significantly different with and without the use of home liners, and higher values were obtained with the use of home-liners. However, the cream-type denture adhesive and home-liner groups showed no significant differences in terms of the change in masticatory performance with the use of them. Furthermore, Wilcoxon signed-rank tests showed that TCI values were significantly high in the cream-type adhesive group. The findings in this study suggest that home liners improve masticatory performance and that participants regularly using cream-type denture adhesives have poorer oral hygiene.

A cluster randomized trial of xylitol chewing gum for prevention of preterm birth: The PPaX trial.

Maternal periodontal disease is associated with preterm and low-birthweight deliveries, but randomized trials of likely efficacious treatments (e.g., dental scaling and root planing) during pregnancy have not reduced these adverse outcomes. As an alternative, we hypothesized that periconception initiation of xylitol chewing gum would reduce the occurrence of preterm or low-birthweight deliveries among a historical high-prevalence population in Malawi. We conducted an open-label, parallel-enrollment, matched-pair, cluster-randomized, controlled clinical trial across eight health centers (sites) in and around Lilongwe, Malawi. Sites were paired by anticipated delivery volume and randomized to prenatal and oral health education alone (active control) or with twice-daily xylitol chewing gum (intervention) throughout the periconception and antenatal periods. Forthe primary prevention of preterm (<37weeks) and low-birthweight (<2,500 g) deliveries (co-primary outcomes), comparison by allocation group was performed using generalized linear mixed models for each outcome as a fixed factor and the site(s) as a random factor. 10,069 participants were enrolled (n= 4,549 at intervention sites, n= 5,520 at active control sites), with >95% available for analyses. Initiation of xylitol chewing gum resulted in significant reductions in the co-primary outcomes: preterm birth (12.6% [549/4,349] vs. 16.5% [878/5,321]; relative risk [RR] 0.76, 95% confidence interval [CI] 0.57-0.99) and <2,500-g neonates (8.9% [385/4,305] vs. 12.9% [679/5,260]; RR 0.70, 95% CI 0.49-0.99). Xylitol chewing gum use also led to fewer neonatal demises (0.2% [8/4,305] vs. 0.4% [22/5,260]; RR 0.41, 95% CI 0.19-0.89). Periconception initiation and ongoing use of xylitol chewing gum significantly reduced the occurrence of preterm and low-birthweight deliveries in Malawi. E.W. Al Thrasher Foundation (to K.A.) and USAID Saving Lives at Birth Grand Challenges Grant AID-OAA-G-11-00062 (to K.A.). Additional financial and in-kind support was graciously provided by Texas Children's Hospital and Baylor Foundation Malawi.

Chewing gum to treat postoperative nausea and vomiting in female patients: a multicenter randomized trial.

Postoperative nausea and vomiting (PONV) is common after general anesthesia, with consequences for patient outcomes, satisfaction with care and healthcare costs. Our aim was to compare a new treatment, chewing gum, with a widely-used intravenous agent, ondansetron, to treat PONV in female patients in the post anesthesia care unit (PACU). We conducted a multicenter, randomized, controlled non-inferiority trial in 17 hospitals in Australia and New Zealand. Female patients aged ≥12 years undergoing volatile anesthetic-based general anesthesia for laparoscopic or breast surgery were enrolled. Protocolized anti-emetic prophylaxis was administered. Patients who developed PONV in the PACU were randomized to either 15 min of chewing gum or 4 mg of intravenous ondansetron. The primary outcome was cessation of nausea, retching or vomiting, with no recurrence nor rescue medication for 2 h after administration of the randomized intervention (i.e., complete response). Of 865 enrolled patients, 218 were randomized. In a per-protocol analysis, 50 of 105 (47.6%) ondansetron-treated patients compared with 31 of 103 (30.1%) chewing gum-treated patients achieved the primary outcome (absolute risk difference [95% confidence interval (CI)] -17.3 [-30.4 to -4.3] %), not reaching our prespecified non-inferiority limit. Time to complete response was longer for patients randomized to chewing gum (hazard ratio [95% CI] 0.53 [0.34, 0.83]), and they were more likely to receive antiemetics in the 24 h after surgery (absolute risk difference [95% CI] 14.07 [1.65, 26.49]). Chewing gum cannot be recommended as an alternative to ondansetron for treatment of PONV in female patients administered antiemetic prophylaxis.

Effectiveness of Chewing Gum After Water Rinsing in Removing Remnants of Sticky Cookies From Posterior Teeth-A Prospective Interventional Study.

To evaluate the effectiveness of chewing sugarless gum (SG) after water-rinsing in removing retained Oreo chocolate cookies (CC) from occlusal surfaces of teeth with and without fissure-sealant (FS). A prospective study was performed on healthy children receiving prophylaxis at the paediatric-dentistry department. Immediately afterward, they chewed two CC. The occlusal surfaces of their posterior teeth were photographed 3 times: after 10 min, after 1 min of water-rinsing and after 4 min of chewing SG. An independent dentist screened all photos for the presence (partial or complete) or the absence of retained CC. Participants included 28 children 7-14-year-old, with 100 primary and 214 permanent molars, of which, 150 teeth had FS. After chewing two CC, 290 (92.4%) teeth had retained CC. Water-swishing removed all, partial or none of the CC in 23%, 72.4% and 4.6% of the teeth, respectively. The effectiveness of chewing SG in completely removing retained CC was significantly higher than water-rinsing (p < 0.001), OR = 43.83, Cramer's V value = 0.871, suggesting a very strong correlation. The presence of FS raised the probability of completely removing retained CC after SG or water-rinsing (p < 0.001, OR = 107.7 and 25.9), with Cramer's V = 0.66 and 0.57, respectively, means a very strong association, as compared to teeth without (For both p < 0.001). Chewing gum for 4 min was significantly more effective than water-rinsing for 1 min in removing retained CC. Moreover, FS considerably decreased the probability of retained CC on occlusal surfaces and increased the effectiveness of SG in removing it.

Combined Phase 1/2a Initial Clinical Safety Trials and Proof-of-Concept Assessment of a Novel Antimicrobial Peptide KSL-W Anti-Plaque Chewing Gum.

The effective control of dental plaque is crucial for oral health, given that pathogenic bacteria in plaque are the primary cause of dental caries. Current antimicrobial agents, although effective, disrupt the oral microbiome and lead to oral dysbiosis, hindering efforts to curb dental caries. Novel antimicrobial peptides offer a promising solution due to their selective bactericidal activity against cariogenic bacteria. This study explores the initial safety and efficacy of KSL-W formulated into chewing gum through a Phase 1 and 2a clinical trial. The combined trial, approved by the FDA, follows a double-blind, randomized, placebo-controlled design. Phase 1 assessed safety with single doses (2-100 mg), whereas Phase 2a explored both safety and proof of concept in reducing oral bacteria with multiple doses (4-75 mg). Besides adverse events (Phase 1), outcome measures included whole-mouth plaque and gingival index scores and bleeding on probing (Phase 2a). KSL-W demonstrated safety in both phases, with no severe adverse events. The proof-of-concept analysis revealed a decrease in plaque and gingival inflammation, particularly at doses ≥ 20 mg. The 30 mg dose appeared to yield optimal effects without any adverse reactions in subjects. Results from this study indicate that KSL-W is safe for use in humans and provides initial evidence of its potential efficacy in reducing plaque and gingival inflammation. Further research is essential to determine optimal usage and ultimate safety, and to assess its potential in diverse populations. The trial is registered with the FDA (Trial Registration Number: NCT01877421). The clinical trials were registered in the clinicaltrials.gov database under the title "Safety and Tolerability of Antiplaque Chewing Gum in a Gingivitis Population" and the identifier number is NCT01877421. The URL for accessing the study in clinicaltrials.gov is https://clinicaltrials.gov/study/NCT01877421?intr=Antiplaque%20chewing&rank=1.

Comparative efficacy of non-pharmacological interventions on xerostomia and salivary flow rate among hemodialysis patients: a systematic review and network meta-analysis

Abstract Background Xerostomia is a distressing symptom experienced by patients undergoing dialysis. We sought to compare and rank the efficacy of different non-pharmacological interventions on xerostomia and salivary flow rate among dialysis patients. Methods A systematic search was conducted in six English databases: Pubmed, CINAHL, Scopus, Web of Science, Embase, and Cochrane trials, in April 2023. Screening, quality appraisal, and data extraction were undertaken by two independent reviewers. A network meta-analysis was performed to assess the relative efficacy of different non-pharmacological interventions. Results The analysis included 11 randomized controlled trials involving 739 patients and eight non-pharmacological interventions. The pairwise analysis indicated that in comparison with the control group, sugarless candy, chewing sugarless gum, acupressure auricular, and licorice mouthwash had a significant positive effect on reducing the severity of xerostomia, also transcutaneous electrical nerve stimulation (TENS), licorice mouthwash, sugarless chewing gum, photobiomodulation, and pure water mouthwash, significantly improved saliva flow rate. The network analysis indicated that sugarless chewing gum significantly reduced the symptoms of xerostomia, while TENS and sugarless chewing gum were effective in improving UWS. Chewing sugarless gum and using TENS were the top-ranked interventions for relieving xerostomia and enhancing saliva flow rate among dialysis patients, respectively. Conclusions Several non-pharmacological interventions have demonstrated effectiveness in relieving xerostomia and enhancing saliva flow rates. While further research may be needed to confirm and refine these findings the interventions used in this review offer promising results and should be incorporated into the standard care of dialysis patients experiencing these symptoms to enhance their quality of life and oral health.

Are caffeine effects equivalent between different modes of administration: the acute effects of 3 mg.kg-1 caffeine on the muscular strength and power of male university Rugby Union players.

There is growing interest in the potential of alternative modes of caffeine administration for enhancing sports performance. Given that alternative modes may evoke improved physical performance via distinct mechanisms, effects may not be comparable and studies directly comparing the erogenicity of alternative modes of caffeine administration are lacking. To address this knowledge gap, the present study evaluated the effect of 3 mg·kg-1 caffeine delivered in anhydrous form via capsule ingestion, chewing gum or mouth rinsing on measures of muscular strength, power, and strength endurance in male Rugby Union players. Twenty-seven participants completed the study (Mean ± SD: Age 20 ± 2 yrs; daily caffeine consumption 188 ± 88 mg). Following assessments and reassessment of chest press (CP), shoulder press (SP), Deadlift (DL), and Squat (SQ) 1-repetition maximum (1RM) and familiarization to the experimental procedures, participants completed six experimental trials where they were administered 3 mg.kg-1 caffeine (Caff) or placebo (Plac) capsule(CAP), chewing gum(GUM) or mouth rinse(RINSE) in a randomized, double-blind and counterbalanced fashion prior to force platform assessment of countermovement jump, drop jump and isometric mid-thigh pull performance. Strength endurance was measured across two sets of CP, SP, DL, and SQ at 70% 1RM until failure. Pre-exercise perceptions of motivation and arousal were also determined. Caffeine increased perceived readiness to invest mental effort (p = .038; ηp2=.156), countermovement jump height (p = .035; ηp2=.160) and SQ repetitions until failure in the first set (p < .001; d = .481), but there was no effect of delivery mode (p > .687; ηp2<.015). Readiness to invest physical effort, felt arousal, drop jump height, countermovement jump, drop jump and isometric mid-thigh pull ground reaction force-time characteristics and repetitions until failure in CP, SP and DL were not affected by caffeine administration or mode of caffeine delivery (p > .0.052; ηp2< .136). 3 mg.kg-1 caffeine administered via capsule, gum or mouth rinse had limited effects on muscular strength, power, and strength endurance. Small effects of caffeine on CMJ height could not be explained by changes in specific ground reaction force-time characteristics and were not transferable to DJ performance, and effects specific to the SQ RTP exercise underpin the complexity in understanding effects of caffeine on muscular function. Novel modes of caffeine administration proposed to evoke benefits via distinct mechanisms did not offer unique effects, and the small number of effects demonstrated may have little translation to a single performance trial when data examining direct comparison of each caffeine vehicle compared against a mode matched placebo is considered.

Use of chewing gum waste as secondary material

The work is devoted to discussing the problems of using production waste and chewing gum. This food product in its composition, together with syrups, starch, sugar or sorbitol, and fl avorings, contains a non-food product — rubber in an amount of about 20% of the product weight. The issues of using waste rubbers and compositions in the production of chewing gum for various purposes, including the production of adhesives or packaging, are discussed.

The Effect of Gum Chewing on Gastrointestinal System Functions in Patients Undergoing Colorectal Surgery: A Systematic Review

In the postoperative period, gas and secretions in the stomach and small and large intestines due to delayed motility of the gastrointestinal system cause abdominal bloating, nausea, vomiting and pain, and this situation negatively affects the comfort level of patients. Chewing gum is among the methods used to prevent ileus after surgery. Chewing gum activates the cephalic vagal reflex and stimulates bowel function in the postoperative period. In this article, the effect of chewing gum in preventing ileus after colorectal surgery and the factors affecting the success rate are reviewed in the light of current literature.

Standing out while fitting in: An objective measure of visual branding cohesion across a product portfolio

This research develops a new metric (PBCM) that can identify products within a portfolio that are eroding visual branding cohesion. We show how this new measure gives results equivalent to consumer evaluations of cohesion, without costly and time intensive data collection. The sampling frame for this research is 10 portfolios from five categories (dry dog food, instant coffee, toothpaste, shower gel and chewing gum) in the United Kingdom. In addition, 626 consumers were surveyed to investigate how PBCM affects a consumer’s ability to match an individual product back to its portfolio and recall the brand name. We find that products from high cohesion portfolios have significantly higher (17%) correct brand recall than those from low cohesion portfolios and are matched back to their portfolio by more than twice as many respondents (79% v 35%), significantly faster (2.3 vs. 3.8 minutes).

Pharmacists' Knowledge, Perception, and Prescribing Practice of Probiotics in the UAE: A Cross-Sectional Study.

The human body is a complex and interconnected system where trillions of microorganisms, collectively known as the gut microbiota, coexist with these cells. Besides maintaining digestive health, this relationship also impacts well-being, including immune function, metabolism, and mental health. As frontline healthcare providers, pharmacists are pivotal in promoting the benefits of probiotics for immune support. This study explored pharmacists' knowledge, perception, and practice behavior in the UAE towards the implication of probiotic application beyond digestive health, such as cardiovascular and mental health impacts and their diverse dosage forms. An online self-administered survey was distributed among pharmacists in the UAE. Data were collected through personal visits to pharmacies, where pharmacists were approached and asked to complete the questionnaire. The sample size included 407 pharmacists, determined using the formula for proportions with a 95% confidence level and a 5% margin of error. Statistical analysis was performed using SPSS version 29. Descriptive statistics were used to summarize demographic characteristics and survey responses. The knowledge levels were categorized into poor, moderate, and good. Chi-square analysis was employed to investigate associations between demographic factors and knowledge levels, with a significance level set at p < 0.05, enhancing the robustness of the study's findings. This study included 407 completed eligible responses. About 63.56% of participants were female, with 52.1% employed in pharmacy chains. While 91.2% of pharmacists recognized probiotics' role in immune support, only 30% were aware of their cardiovascular benefits. Moreover, chewing gum was the least known dosage form of probiotics, recognized by only 16.7% of respondents. Additionally, only 57% of the participants recognized liposomes as a dosage form. In practice, most pharmacists recommended storing probiotics at room temperature, accounting for 66.6%. The most prevalent misconception encountered in the pharmacy setting was the belief that probiotics are primarily intended for gastrointestinal tract problems, at 79.1% of the respondents. Regarding perception, the agreement was observed regarding the safety of probiotics for all ages. Perceived barriers included the high cost of probiotics, with the majority (86.5%) indicating this as a significant obstacle, while lack of demand was identified as the minor barrier by 64.6%. Additionally, an association was found at a significance level of p < 0.05 with knowledge, gender, educational level, type and location of pharmacy, and source of information. The study highlights knowledge gaps in pharmacists' understanding of probiotic applications beyond digestive health, particularly cardiovascular health and depression. Targeted educational interventions are necessary to address these gaps. The findings underscore the importance of ongoing professional development for pharmacists, enhancing their role in patient education and the promotion of probiotics for overall health.

Acute ingestion of caffeinated chewing gum reduces fatigue index and improves 400-meter performance in trained sprinters: a double-blind crossover trial.

This study investigated the effects of caffeinated chewing gum on fatigue index and 400-meter performance in trained sprinters. Nineteen participants (age: 20.9 ± 1.0 years; height: 175.6 ± 4.9 cm; mass: 66.5 ± 5.6 kg; training age: 7.9 ± 1.0 years) were randomly assigned to either a caffeine trial (CAF) or a placebo trial (PL) using a double-blind, randomized crossover design. The participants in the CAF trial chewed a gum containing 3 mg/kg of caffeine for a period of 10 minutes, while those in the PL trial chewed a gum containing a placebo with no caffeine. Following a 15-minute period of rest, the fatigue index was tested by six maximal 35-meter sprints with a 10-second rest between efforts. After this, at least 30 minutes of rest was permitted, during which time the participants engaged in brief warm-up activities prior to the commencement of the 400-meter sprint test. Saliva samples were collected before chewing gum, before the fatigue test and before 400-meters sprinting. The fatigue index was significantly lower in the CAF trial compared to the PL trial (CAF: 8.1 ± 2.5%; PL: 9.6 ± 4.8%; p = 0.046, Cohen's d = 039). The CAF trial demonstrated significantly lower sprint time for the 300-400 meter segment (CAF: 14.73 ± 1.35 seconds; PL: 15.23 ± 1.30 seconds; p = 0.019, Cohen's d = 0.37) and total sprint time compared to the PL trial (CAF: 53.87 ± 2.88 seconds; PL: 54.68 ± 3.37 seconds; p = 0.003, Cohen's d = 0.27). Saliva caffeine and α-amylase concentration were significantly higher in the CAF trial compared to the PL trial (p < 0.05). The present study demonstrated that caffeine gum supplementation prior to exercise significantly reduced the fatigue index and increased the capacity to maintain speed, particularly in the final 300 to 400 meters, as well as enhancing 400-meter sprint performance.

Of the article: evaluation of the masticatory efficiency of children with stainless steel crowns: a pilot cross-sectional split-mouth study

BackgroundStainless steel crowns (SSCs) are commonly employed to restore the posterior teeth of children and over the years, they are available with improved anatomical shapes. This study was conducted to evaluate and assess the effect of the placement of SSCs on the masticatory efficiency of children.MethodsThis pilot cross-sectional split-mouth study assessed masticatory efficiency in children aged 6–11 years. Fifteen participants, each with stainless-steel crowns placed unilaterally at least one month prior, were included. This study utilized two flavours of trident chewing gum (red and green) to measure masticatory efficiency. The child was asked to chew half a strip of red and green chewing gum placed one on top of the other using either the noncrown or crown side 15 times. Another set of chewing gum was given to the child to chew 20 times on the same side. The chewing exercise was repeated using teeth on the other side. Chewed gum samples were collected, photographed, and analysed via ImageJ software to determine the red and green areas. Masticatory efficiency was subsequently calculated with the help of a formula in which the red areas and green areas were calculated via ImageJ software. The data were analysed with paired t tests via SPSS (version 20.0).ResultsWhen the mean values of the crown side were compared with those of the noncrown side following 15 chewing cycles, the chewing efficiency on the noncrown side was greater, with a difference of 0.303, whereas the chewing efficiency following 20 chewing cycles was greater on the crown side, with a difference of 0.814. However, both differences were statistically nonsignificant, with t values of -0.07 and 0.26, respectively, and p values of 0.94 and 0.8, respectively.ConclusionThe presence of SSCs on the molars of children did not affect masticatory efficiency.

Association between the type of dental prosthesis and the masticatory performance of institutionalized patients: A cross-sectional study.

This cross-sectional study aimed to determine the chewing ability of 97 institutionalized older adults and its relevance to their status of dentition and type of prosthetic rehabilitation. The participants were categorized according to their dental status. The chewing ability was determined by semi-quantitative evaluation of a colour-changeable chewing gum and by recording the personal perception of the participants on a similar scale. The colorimetric means of the participants was significantly lower than the perception means. One-third of the participants had at least one jaw restored with complete dentures, while 17% were restored with tooth-supported or implant-supported fixed partial dentures. Based on the colorimetric method, edentulous participants displayed significantly lower chewing performance compared to all other groups. Additionally, participants with at least one complete denture exhibited weaker chewing function than those with natural teeth or fixed partial dentures. The age and sex of the participants had no further impact on the results. As the institutionalized elderly seem to overestimate their chewing efficiency, the colour changeable chewing gum could be used in nursing homes, as a simple method to determine their real masticatory function status and improve their dental care.

Effects of various oral exercises on swallowing function in the elderly: A systematic review

Oral exercises as a rehabilitation strategy can be performed by the elderly at any time and place without any complications or financial burden. Therefore, an oral exercise that is easy to perform and follow in daily life, can effectively improve the oral health of the elderly. This systematic review was conducted to investigate the effect of oral exercises on swallowing function in the elderly. A comprehensive systematic search was conducted on international electronic databases such as Scopus, PubMed, Web of Science, as well as on Iranian electronic databases such as Iranmedex, and Scientific Information Database from the earliest to April 1, 2023. The Joanna Briggs Institute (JBI) critical appraisal checklist was used to assess the quality of randomized control trials and quasi-experimental studies. A total of 728 elderly people participated in fourteen studies. Based on the results of the present systematic review, ten interventions including “lingual resistance exercise with Iowa oral performance instrument”, “exercise for swallowing”, “oral exercise”, “expiratory muscle strength training”, “swallow resistance exercise”, “swallowing exercises”, “oral neuromuscular training”, “simple oral exercise (SOE)”, “tongue strengthening exercise”, “SOE and chewing gum exercise with SOE” improved swallowing function in the elderly. However, the other four interventions including “swallowing exercises”, “resistance training”, “effortful swallowing exercise”, and “oral exercises” did not affect improving swallowing function in the elderly. Health managers and policymakers can improve the swallowing performance of the elderly by implementing training protocols related to oral exercise in addition to routine interventions.