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Izidoro C, Botelho J, Machado V, Reis AM, Proença L, Alves RC, Mendes JJ. Revisiting Standard and Novel Therapeutic Approaches in Halitosis: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11303. [PMID: 36141577 PMCID: PMC9516975 DOI: 10.3390/ijerph191811303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 06/16/2023]
Abstract
Halitosis, or bad breath, is an oral health problem characterized by an unpleasant malodor emanating from the oral cavity. This condition can have different origins and causes a negative burden in social interactions, communication and quality of life, and can in uncommon cases be indicative of underlying non-oral non-communicable diseases. Most cases of halitosis are due to inadequate oral hygiene, periodontitis and tongue coating, yet the remaining proportion of cases are due to ear-nose-throat-associated (10%) or gastrointestinal/endocrine (5%) disorders. For this reason, the diagnosis, treatment and clinical management of halitosis often require a multidisciplinary team approach. This comprehensive review revisits the etiology of halitosis as well as standard and novel treatment that may contribute to higher clinical success.
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Affiliation(s)
- Catarina Izidoro
- Periodontology Department, Egas Moniz Dental Clinic (EMDC), Egas Moniz, CRL, 2829-511 Monte de Caparica, Portugal
- Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Monte de Caparica, Portugal
| | - João Botelho
- Periodontology Department, Egas Moniz Dental Clinic (EMDC), Egas Moniz, CRL, 2829-511 Monte de Caparica, Portugal
- Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Monte de Caparica, Portugal
| | - Vanessa Machado
- Periodontology Department, Egas Moniz Dental Clinic (EMDC), Egas Moniz, CRL, 2829-511 Monte de Caparica, Portugal
- Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Monte de Caparica, Portugal
| | - Ana Mafalda Reis
- Instituto de Ciências Biomédicas Abel Salazar, School of Health and Life Sciences, University of Porto, 4099-002 Porto, Portugal
- Neuroradiology Department, Hospital Pedro Hispano, 4464-513 Matosinhos, Portugal
| | - Luís Proença
- Quantitative Methods for Health Research Unit (MQIS), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz, CRL, 2829-511 Monte de Caparica, Portugal
| | - Ricardo Castro Alves
- Periodontology Department, Egas Moniz Dental Clinic (EMDC), Egas Moniz, CRL, 2829-511 Monte de Caparica, Portugal
- Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Monte de Caparica, Portugal
| | - José João Mendes
- Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Monte de Caparica, Portugal
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Zanetti F, Zivkovic Semren T, Battey JND, Guy PA, Ivanov NV, van der Plas A, Hoeng J. A Literature Review and Framework Proposal for Halitosis Assessment in Cigarette Smokers and Alternative Nicotine-Delivery Products Users. FRONTIERS IN ORAL HEALTH 2021; 2:777442. [PMID: 35048075 PMCID: PMC8757736 DOI: 10.3389/froh.2021.777442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/15/2021] [Indexed: 12/03/2022] Open
Abstract
Halitosis is a health condition which counts cigarette smoking (CS) among its major risk factors. Cigarette smoke can cause an imbalance in the oral bacterial community, leading to several oral diseases and conditions, including intraoral halitosis. Although the best approach to decrease smoking-related health risks is quitting smoking, this is not feasible for many smokers. Switching to potentially reduced-risk products, like electronic vapor products (EVP) or heated tobacco products (HTP), may help improve the conditions associated with CS. To date, there have been few systematic studies on the effects of CS on halitosis and none have assessed the effects of EVP and HTP use. Self-assessment studies have shown large limitations owing to the lack of reliability in the participants' judgment. This has compelled the scientific community to develop a strategy for meaningful assessment of these new products in comparison with cigarettes. Here, we compiled a review of the existing literature on CS and halitosis and propose a 3-layer approach that combines the use of the most advanced breath analysis techniques and multi-omics analysis to define the interactions between oral bacterial species and their role in halitosis both in vitro and in vivo. Such an approach will allow us to compare the effects of different nicotine-delivery products on oral bacteria and quantify their impact on halitosis. Defining the impact of alternative nicotine-delivery products on intraoral halitosis and its associated bacteria will help the scientific community advance a step further toward understanding the safety of these products and their potentiall risks for consumers.
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Affiliation(s)
- Filippo Zanetti
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
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Efficacy of a Zinc Lactate Mouthwash and Tongue Scraping in the Reduction of Intra-Oral Halitosis: A Single-blind, Controlled, Crossover Clinical Trial-A Pilot Study. J Clin Med 2021; 10:jcm10235532. [PMID: 34884234 PMCID: PMC8658071 DOI: 10.3390/jcm10235532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/22/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022] Open
Abstract
Intra-oral halitosis is defined as an unpleasant odor that comes out of the mouth. The aim of this study was to investigate the effect of zinc lactate mouthwash and tongue scraping on intra-oral halitosis. The study was conducted on 60 volunteers that were divided into two groups and fol-lowed two types of 14-day oral hygiene protocols on a cross-over basis after a 7-day wash-out period. One protocol was based on tooth brushing only, while the other was based on additional mouth rinsing with a zinc lactate product and tongue scraping. Morning mouth breath was as-sessed organoleptic and by volatile sulfur compound concentrations. The highest mean organo-leptic and volatile sulfur compound measurement values were found in the tooth brushing without mouth washing and tongue scraping oral hygiene protocol (p < 0.05). The zinc lactate mouthwash combined with tongue scraping appears to be an important hygienic procedure to reduce breath odor.
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The Chairside Periodontal Diagnostic Toolkit: Past, Present, and Future. Diagnostics (Basel) 2021; 11:diagnostics11060932. [PMID: 34067332 PMCID: PMC8224643 DOI: 10.3390/diagnostics11060932] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/07/2021] [Accepted: 05/19/2021] [Indexed: 12/22/2022] Open
Abstract
Periodontal diseases comprise a group of globally prevalent, chronic oral inflammatory conditions caused by microbial dysbiosis and the host immune response. These diseases specifically affect the tooth-supporting tissues (i.e., the periodontium) but are also known to contribute to systemic inflammation. If left untreated, periodontal diseases can ultimately progress to tooth loss, lead to compromised oral function, and negatively impact the overall quality of life. Therefore, it is important for the clinician to accurately diagnose these diseases both early and accurately chairside. Currently, the staging and grading of periodontal diseases are based on recording medical and dental histories, thorough oral examination, and multiple clinical and radiographic analyses of the periodontium. There have been numerous attempts to improve, automate, and digitize the collection of this information with varied success. Recent studies focused on the subgingival microbiome and the host immune response suggest there is an untapped potential for non-invasive oral sampling to assist clinicians in the chairside diagnosis and, potentially, prognosis. Here, we review the available toolkit available for diagnosing periodontal diseases, discuss commercially available options, and highlight the need for collaborative research initiatives and state-of-the-art technology development across disciplines to overcome the challenges of rapid periodontal disease diagnosis.
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Wu J, Cannon RD, Ji P, Farella M, Mei L. Halitosis: prevalence, risk factors, sources, measurement and treatment - a review of the literature. Aust Dent J 2019; 65:4-11. [PMID: 31610030 DOI: 10.1111/adj.12725] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2019] [Indexed: 11/29/2022]
Abstract
Halitosis, an offensive breath odour, has multiple sources and negative impacts on people's social interactions and quality of life. It is important for health care professionals, including general physicians and dental professionals, to understand its aetiology and risk factors in order to diagnose and treat patients appropriately. In this study, we have reviewed the current literature on halitosis regarding its prevalence, classification, risk factors, sources, measurement and treatment.
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Affiliation(s)
- J Wu
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - R D Cannon
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - P Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - M Farella
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - L Mei
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
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Meurman JH, Stamatova IV. Probiotics: Evidence of Oral Health Implications. Folia Med (Plovdiv) 2019; 60:21-29. [PMID: 29668457 DOI: 10.1515/folmed-2017-0080] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 07/27/2017] [Indexed: 12/18/2022] Open
Abstract
The prevalence of common oral diseases, such as dental caries, periodontal diseases and oral candidiasis remains high in the general population. Various preventive strategies have been proposed and included in national health programs promoting oral health. Interest in probiotics in light of oral health has gradually evolved as attractive means in prevention of oral infectious diseases. The aim of the present review is to outline the current evidence on the role of probiotic species on oral health parameters and their beneficial role in contributing to healthier oral environment.
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Affiliation(s)
- Jukka H Meurman
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Iva V Stamatova
- Department of Restorative Dentistry, Faculty of Dental Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria
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Liu DCY, Ho TCY, Duangthip D, Gao SS, Lo ECM, Chu CH. Dental Students' Awareness, Preparedness and Barriers towards Managing Tobacco-Using Patients-A Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E1862. [PMID: 31137792 PMCID: PMC6572687 DOI: 10.3390/ijerph16101862] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 11/24/2022]
Abstract
Aims: To evaluate Hong Kong dental students' perceived awareness, preparedness and barriers towards managing tobacco-using patients. Methods: A validated questionnaire was administered to dental students who were in their clinical years (the third, fourth, fifth and sixth year of study) in 2017 at the University of Hong Kong. The questionnaire consisted of three sections: (1) awareness towards practicing tobacco cessation counselling (TCC), (2) preparedness in terms of confidence, knowledge and clinical practices when managing tobacco-using patients, and (3) perceived barriers to counselling. Results: All 206 invited students had participated this study. Most (93%) agreed that dentists should deliver TCC. However, only around a quarter (26%) of students were well-prepared to help patients in tobacco cessation. While 60% of students agreed nicotine replacement therapy (NRT) was helpful for patients to quit tobacco use, only 28% understood its mechanism of action, and merely 16% were knowledgeable enough to introduce NRT to their patients. Two-thirds (62%) of students felt they did not have sufficient skills at this stage of their training. Conclusions: Most Hong Kong dental students had good awareness that dental professionals had an important role to promote tobacco cessation in their patient pools. However, not many of them were well-prepared to manage tobacco-using patients. Common barriers were found to be patients' apathy and students' inadequate familiarity with NRT.
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Affiliation(s)
| | - Tracy Chui Yi Ho
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | | | | | | | - Chun Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
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Basic A, Serino G, Leonhardt Å, Dahlén G. H 2S mediates increased interleukin (IL)-1β and IL-18 production in leukocytes from patients with periodontitis. J Oral Microbiol 2019; 11:1617015. [PMID: 31164964 PMCID: PMC6534246 DOI: 10.1080/20002297.2019.1617015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 04/29/2019] [Accepted: 05/02/2019] [Indexed: 11/05/2022] Open
Abstract
Background: The mechanisms involved in the interplay between the bacteria and the host cells in periodontitis are not fully understood. Aim: To investigate the effect of the bacterial metabolite H2S on the pro-inflammatory cytokines interleukin (IL)-1β and IL-18 from periodontitis patients and healthy controls, and to evaluate the composition of the subgingival microbiota with its capacity to produce H2S. Methods: Subgingival bacterial samples from patients with periodontitis (N=32) and healthy controls (N=32) were investigated for H2S production and bacterial composition. Peripheral blood mononuclear cells (PBMCs) were cultured in the presence/absence of 1mM H2S for 24h and cytokine concentrations were measured. Results: Subgingival plaque from periodontitis patients had more H2S producing bacteria and produced more H2S, than healthy controls. PBMCs exposed to H2S secreted significantly more IL-1ß and IL-18 (p<0.0001) than untreated control PBMCs from both groups. PBMCs from the periodontitis patients secreted higher levels of the cytokines, both spontaneously (IL-1ß p=0.0001; IL-18 p=0.09) and after exposure to H2S (IL-1ß p=0.03; IL-18 p=0.04), which is a new finding not previously reported. Conclusions: H2S, from the subgingival microbiota, can contribute to a host inflammatory response through secretion of the pro-inflammatory cytokines IL-1β and IL-18. Since this response differs between individuals, it may also reflect the susceptibility of the host to develop periodontitis.
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Affiliation(s)
- Amina Basic
- Oral Microbiology and Immunology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Giovanni Serino
- Department of Periodontology, Södra Älvsborgs Hospital, Borås, Sweden
| | - Åsa Leonhardt
- Oral Microbiology and Immunology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Gunnar Dahlén
- Oral Microbiology and Immunology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Liu LY, McGregor N, Wong BKJ, Butt H, Darby IB. The association between clinical periodontal parameters and free haem concentration within the gingival crevicular fluid: a pilot study. J Periodontal Res 2015; 51:86-94. [DOI: 10.1111/jre.12286] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2015] [Indexed: 11/29/2022]
Affiliation(s)
- L. Y. Liu
- Melbourne Dental School; The University of Melbourne; Melbourne Vic. Australia
| | - N. McGregor
- Melbourne Dental School; The University of Melbourne; Melbourne Vic. Australia
- BioScreen Medical; Parkville Vic. Australia
| | - B. K. J. Wong
- Melbourne Dental School; The University of Melbourne; Melbourne Vic. Australia
| | - H. Butt
- BioScreen Medical; Parkville Vic. Australia
| | - I. B. Darby
- Melbourne Dental School; The University of Melbourne; Melbourne Vic. Australia
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Samnieng P, Ueno M, Shinada K, Zaitsu T, Kawaguchi Y. Daily variation of oral malodour and related factors in community-dwelling elderly Thai. Gerodontology 2011; 29:e964-71. [PMID: 22126407 DOI: 10.1111/j.1741-2358.2011.00593.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The purposes of this study were (i) to estimate the prevalence of oral malodour, (ii) to evaluate the daily variation of oral malodour and (iii) to assess associations of volatile sulphur compound (VSC) concentrations with socio-demographics, health behaviours and oral health status in community-dwelling elderly Thai. METHODS The subjects were 428 dentate elderly people (67.6 ± 5.6 years) living in Phitsaulok, Thailand. Information on their socio-demographics, general health and health behaviours was obtained by a questionnaire. Their dental condition, periodontal status and tongue coating were clinically examined. Their flow rates and the pH of unstimulated saliva were also assessed. Oral malodour was measured at four different times of day using an Oral Chroma™. RESULTS The proportions of subjects diagnosed with oral malodour using the thresholds of H(2)S, CH(3)SH and (CH(3))(2) S were 60.5%, 62.9% and 80.7%, respectively. Concentrations of H(2)S showed significant daily variation. Linear regression analysis demonstrated the following significant associations: (i) oral malodour from H(2)S and thickness of the tongue coating, (ii) oral malodour from CH(3)SH and periodontal pocket depth of 5 mm or more and the presence of gingival bleeding and (iii) oral malodour from (CH(3))(2)S and systemic disease, medications and thickness of the tongue coating. DISCUSSION Oral malodour was shown to be prevalent among the elderly. Daily variation was observed in the concentration of H(2)S. Tongue coating, periodontal disease, systemic diseases and medications were related to oral malodour. Therefore, these factors should be taken into consideration in oral malodour treatment and prevention programmes for the elderly.
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Affiliation(s)
- Patcharaphol Samnieng
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
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Buduneli N, Larsson L, Biyikoglu B, Renaud DE, Bagaitkar J, Scott DA. Fatty acid profiles in smokers with chronic periodontitis. J Dent Res 2010; 90:47-52. [PMID: 21041552 DOI: 10.1177/0022034510380695] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We hypothesized that tobacco smoke induces alterations to the 3-OH fatty acids present in lipid A in a manner consistent with a microflora of reduced inflammatory potential. Whole saliva samples and full-mouth clinical periodontal recordings were obtained from persons with (22 smokers; 15 non-smokers) and without (14 smokers; 15 non-smokers) chronic periodontitis. Clear differences in the contributions of multiple saturated 3-OH fatty acid species were noted in the group with disease compared with healthy individuals. Increases in the long-chain fatty acids associated with anaerobic bacterial periodontopathogens, particularly 3-OH-C(i17.0) (146.7%, relative to controls), were apparent. Significant reductions in the 3-OH fatty acids associated with the consensus (high potency) enteric LPS structure (3-OH-C(12.0) and 3-OH-C(14.0); 33.3% and 15.8% reduction, respectively) were noted in smokers compared with non-smokers with chronic periodontitis. Thus, smoking is associated with specific structural alterations to the lipid-A-derived 3-OH fatty acid profile in saliva that are consistent with an oral microflora of reduced inflammatory potential. These findings provide much-needed mechanistic insight into the established clinical conundrum of increased infection with periodontal pathogens but reduced clinical inflammation in smokers.
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Affiliation(s)
- N Buduneli
- Department of Periodontology, School of Dentistry, Ege University, İzmir, Turkey
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12
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Wilhelm D, Gysen K, Himmelmann A, Krause C, Wilhelm KP. Short-term effect of a new mouthrinse formulation on oral malodour after single use
in vivo
: a comparative, randomized, single-blind, parallel-group clinical study. J Breath Res 2010; 4:036002. [DOI: 10.1088/1752-7155/4/3/036002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Burton JP, Chilcott CN, Moore CJ, Speiser G, Tagg JR. A preliminary study of the effect of probiotic Streptococcus salivarius K12 on oral malodour parameters. J Appl Microbiol 2006; 100:754-64. [PMID: 16553730 DOI: 10.1111/j.1365-2672.2006.02837.x] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To determine whether dosing with bacteriocin-producing Streptococcus salivarius following an antimicrobial mouthwash effects a change in oral malodour parameters and in the composition of the oral microbiota of subjects with halitosis. MATERIALS AND RESULTS Twenty-three subjects with halitosis undertook a 3-day regimen of chlorhexidine (CHX) mouth rinsing, followed at intervals by the use of lozenges containing either S. salivarius K12 or placebo. Assessment of the subjects' volatile sulphur compound (VSC) levels 1 week after treatment initiation showed that 85% of the K12-treated group and 30% of the placebo group had substantial (>100 ppb) reductions. The bacterial composition of the saliva was monitored by culture and PCR-denaturing gradient gel electrophoresis (PCR-DGGE). Changes in the PCR-DGGE profiles occurred in most subjects following K12 treatment. In vitro testing showed that S. salivarius K12 suppressed the growth of black-pigmented bacteria in saliva samples and also in various reference strains of bacteria implicated in halitosis. CONCLUSIONS Administration of bacteriocin-producing S. salivarius after an oral antimicrobial mouthwash reduces oral VSC levels. SIGNIFICANCE AND IMPACT OF THE STUDY The outcome of this preliminary study indicates that the replacement of bacteria implicated in halitosis by colonization with competitive bacteria such as S. salivarius K12 may provide an effective strategy to reduce the severity of halitosis.
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Affiliation(s)
- J P Burton
- BLIS Technologies, Center for Innovation, University of Otago, Dunedin, New Zealand.
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Anesti V, McDonald IR, Ramaswamy M, Wade WG, Kelly DP, Wood AP. Isolation and molecular detection of methylotrophic bacteria occurring in the human mouth. Environ Microbiol 2005; 7:1227-38. [PMID: 16011760 DOI: 10.1111/j.1462-2920.2005.00805.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Diverse methylotrophic bacteria were isolated from the tongue, and supra- and subgingival plaque in the mouths of volunteers and patients with periodontitis. One-carbon compounds such as dimethylsulfide in the mouth are likely to be used as growth substrates for these organisms. Methylotrophic strains of Bacillus, Brevibacterium casei, Hyphomicrobium sulfonivorans, Methylobacterium, Micrococcus luteus and Variovorax paradoxus were characterized physiologically and by their 16S rRNA gene sequences. The type strain of B. casei was shown to be methylotrophic. Enzymes of methylotrophic metabolism were characterized in some strains, and activities consistent with growth using known pathways of C1-compound metabolism demonstrated. Genomic DNA from 18 tongue and dental plaque samples from nine volunteers was amplified by the polymerase chain reaction using primers for the 16S rRNA gene of Methylobacterium and the mxaF gene of methanol dehydrogenase. MxaF was detected in all nine volunteers, and Methylobacterium was detected in seven. Methylotrophic activity is thus a feature of the oral bacterial community.
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Affiliation(s)
- Vasiliki Anesti
- Department of Life Sciences, King's College London, Franklin Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
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Torresyap G, Haffajee AD, Uzel NG, Socransky SS. Relationship between periodontal pocket sulfide levels and subgingival species. J Clin Periodontol 2003; 30:1003-10. [PMID: 14761124 DOI: 10.1034/j.1600-051x.2003.00377.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Many species implicated in the pathogenesis of periodontal disease produce volatile sulfur compounds (VSC). This investigation examined the relationship between levels of sulfide and subgingival bacterial species in the same periodontal pockets. MATERIAL AND METHODS Twenty chronic periodontitis subjects were measured clinically at six sites per tooth for plaque, gingivitis, bleeding on probing, suppuration, pocket depth and attachment level. Subgingival plaque samples, taken from the mesial aspect of each tooth, were individually analyzed for their content of 40 bacterial species using checkerboard DNA-DNA hybridization. Sulfide levels were measured at the same sites using a Diamond Probe/Perio 2000 system. Clinical and microbiological data were averaged for sulfide-positive and -negative sites separately in each subject and then averaged across subjects. Significance differences in clinical and microbial parameters between sulfide-positive and -negative sites were sought using the Wilcoxon signed ranks test. RESULTS Mean total DNA probe counts (x10(5), +/-SEM) at sulfide-negative and -positive sites were 44.0 +/- 9.9 and 65.0 +/- 13.3, respectively (p < 0.01). Seventeen species were found at significantly higher levels in sulfide-positive than -negative sites. These included abundant producers of VSC such as members of the genera Fusobacterium, Campylobacter, Prevotella, Treponema and Eubacterium, and Bacteriodes forsythus, Selenomonas noxia and Propionibacterium acnes. Prevotella intermedia, Bacteriodes forsythus, Prevotella nigrescens, Fusobacterium nucleatum ss vincentii and Treponema denticola exhibited the greatest difference in mean counts between sulfide-negative and -positive sites. Orange and red complex species were at higher counts at shallow (< 4 mm) sulfide-positive than shallow sulfide-negative sites. Although not statistically significant, mean clinical parameters were somewhat higher at sulfide-positive than sulfide-negative sites. CONCLUSIONS Intra-pocket sulfide levels reflect the levels of sulfide-producing species and may provide useful diagnostic information.
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Affiliation(s)
- G Torresyap
- Department of Periodontology, The Forsyth Institute, Boston, MA 02115, USA.
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