The Use of Probiotics in Dental Medicine
1Department of Paediatric Dentistry, Faculty of Medicine of the University of Rijeka, Clinical Hospital Center Rijeka, Croatia
2Associate Professor, Department of Paediatric Dentistry, Faculty of Medicine of the University of Rijeka, Clinical Hospital Center Rijeka, Croatia
3Student of Dental Medicine, Faculty of Medicine of the University of Rijeka, Croatia
*Corresponding author: Danko Bakarcic, Associate Professor, Department of Paediatric Dentistry, Faculty of Medicine of the University of Rijeka, Clinical Hospital Center Rijeka, Croatia, E-mail: firstname.lastname@example.org
Received: March 4, 2017 Accepted: March 9, 2017 Published: March 14, 2017
Citation: Mikulicic A, Bakarcic D, Jokic NI, Hrvatin S and Culav T. The Use of Probiotics in Dental Medicine. Madridge J Dent Oral Surg. 2017; 2(1): 44-46. doi: 10.18689/mjdl-1000111
Copyright: © 2017 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The term probiotic was first used in 1965. And it literally holds a meaning “for life” to describe “a matter that microorganisms secret to stimulate the growth of other” thus giving the contrast to the term antibiotics. Probiotics are living microorganisms which reside in gastrointestinal and urogenital mucosa that benefit the health and boost vitality. Most commonly used genera of bacteria are Lactobacillus and Bifidobacteriae. The probiotics most recognized role is in restoring the balance in oral microflora in the situation when pathogen species of bacteria start to surmount. They accomplish that by competing for the adherent space, and for the source of food with pathogen bacteria and by changing oral cavity conditions. Also, they possess antimicrobial and imunomodifying characteristics.
They prove great results fighting periodontal disease, halitosis, candidiasis as well as in preventing caries. Most of commerically available genera of probiotics (yogurt, milk shakes, pills etc.) are considered safe, but there is a certain part of population at risk.
Keywords: Probiotics; Caries; Halitosis; Candidiasis; Parodontitis.
The main purpose of this review is a brief update about use of probiotics in dental medicine in the fields of caries prevention and treatment of oral diseases like parodontitis, candidiasis and halitosis. There are many strains that offer health benefits (table 1.) The term probiotic was first used by Lilly and Stillwell in 1965. And it literally holds a meaning “for life” to describe “a matter that microorganisms secret to stimulate the growth of other” thus giving the contrast to the term antibiotics .
According to the definition of the World Health Organization the probiotics are “live microorganisms which when administered in adequate amounts confer a health benefit on the host” .
We can differentiate probiotics, prebiotics and synbiotics. Probiotic is a non-digestible food ingredient that promotes the growth of beneficial microorganisms in the intestines. Those are carbohydrates that do not get digested in the upper part of gastrointestinal tract (inulin, fructooligosaccharides, glucooligosaccharides and others). Synbiotics refer to food ingredients or dietary supplements combining probiotics and prebiotics in a form of synergism .
The functioning process of probiotics still remains fairly unknown, but there are several possible options. Probiotics produce organic acids which enter the bacterial cell and disrupt the regular metabolism. They also produce the hydrogen peroxide (H2O2) which causes rupture of cell wall and bacteriocins which inhibit production of DNA and other protein structures . Attaching to the places of adherence in oral cavity, they overrun probable sites of pathogens adherence. They also compete with pathogens for carbohydrates needed for metabolism. Probiotics stimulate non-specific immunity or modulate humoral (immunoglobulins A i G) or cell immunity (NK cells) [1-2,4]. By producing the fatty acids with toxic effect they remove the gram negative bacteria from organism .
Streptococcus mutans has the highest cariogenic potential and enables colonization of other bacterial sorts in biofilm [1,4]. The most studied probiotic is Lactobacillus rhamnosus because it doesnʼt ferment saccharose so consequently there is no production of acids and caries lesion formation is inhibited.
Several studies showed the results of statistically lower level of various Streptococcus species in the groups which consumed the dairy products with probiotics Lactobacillus rhamnosus [5-8]. Taipale et al. concluded that Bifidobacteriae animalis that they used has no apparent effect on the caries formation except if not used constantly .
There are different types of halitosis: physiological, intraoral (spicy food, specific type of food, smoking, alcohol etc.) and extraoral (most often from respiratory tract or stomach) and pseudohalitosis .
The main cause of halitosis (more than 85%) is disbalance in oral microflora.Bacteria degrade proteins from saliva, blood and retained food pieces and as a result make volatile sulphuric compounds [4,11,12]. Most often appearing bacteria are: Atopobium parvulum, Eubacterium sulci, Fusobacterium periodonticum. Rarely are found: Fusobacterium nucleatum, Porphyromonas gingivalis, Prevotella intermedia, Treponema denticola [4,12,13]. Studies show that consumption of probiotics wonʼt permanently prevent the growth of bacteria responsible for halitosis, but it could give enough time for the ecosystem to restore to balance [4,13,14].
Candida albicans is part of the normal flora of the oral cavity and it is the most common fungal infection. Predisposing factors for infection are: older age, xerostomia, weak immune system, use of medicines, mobile prosthesis, increased quantity of yeast etc [2,4].
It is proved that daily consumption of probiotics decreases the quantity of yeast and keeps the microflora balanced. Probiotics stimulate cell and humoral factors that protect mucosa .
It is noticed a decline in prevalence of Candida albicans after the consumption of products containing probiotics in older patients and enhancement of specific immune reaction to yeast but without changes in mucosa lesions [16-17].
Porphyromonas gingivalis, Treponema denticola, Tannarella forsythia i Aggregatibacter actinomycetemcomitans are the most common pathogenes that cause periodontal disease. Probiotics release reuterin and reutericiklin (bacteriocins) which prevent dissemination of pathogens or they change the way the immune system reacts .
The consumption of dairy products on a daily basis results in smaller gaps in periodontal pockets and slower decline in epithelial attachment .
Riccia et al. shown an anti-inflammatory effect of Lactobacillus brevis probiotics on a group of patients with chronic parodontitis . Lactobacillus helveticus creates short peptides which stimulate osteoblasts to grow bones, so that it has his role in bones resorption connected with parodontitis .
Koll- Kleiss et al. found out that the resident Lactobaccilus flora inhibits the growth of Porphyromonas gingivalis for 82% and Prevotella intermedia for 65% .
Probiotics are regulated as dietary supplements, not as a pharmacological or biological products, and has no legitimate cause for a review of their credibility, purity and potential before the marketing and distribution of the product. They are commercially available in various forms: yogurts, milk shakes, pills etc .
Risks from use of Probiotics
Most of commerically available genera of probiotics are considered safe, but there is a certain part of population at risk. Major threat during the consumption is the development of infection, or rather sepsis .
High risk factor involves children with premature birth or immunodeficiency (including malignancies and weakened state of organism) and elderly. Lower risk factor involves: patients with central venus catether, weakened intestinal epithelial barrier, jejunostoma and gastrostoma, probiotic resistance to wide spectre of prescribed antibiotics, probiotics with substantial mucosa adherency or known pathogen and heart disease (only for Lactobaccilus) [23-27].
Probiotics have a positive impact on health and balance of the oral microflora, while also considered safe for consumption relative to a high number of patients that use them without side effects.
There is a certain group of patients at risk with whom we have to be careful when recommending the probiotic therapy, especially with prematurely born and children with immunodeficiency (risk of developing sepsis).
Conflicts of Interest: The authors declare no conflicts of interest with this submission.
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